Journal articles: 'MoS2-rGO'

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Li, Wenbo, Hao Li, Rong Qian, Shangjun Zhuo, Pengfei Ju, and Qiao Chen. "CTAB Enhanced Room-Temperature Detection of NO2 Based on MoS2-Reduced Graphene Oxide Nanohybrid." Nanomaterials 12, no. 8 (April 11, 2022): 1300. http://dx.doi.org/10.3390/nano12081300.

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A new NO2 nanohybrid of a gas sensor (CTAB-MoS2/rGO) was constructed for sensitive room-temperature detection of NO2 by 3D molybdenum disulfide (MoS2) and reduced graphene oxide (rGO), assisted with hexadecyl trimethyl ammonium bromide (CTAB). In comparison with MoS2 and MoS2/rGO, the BET and SEM characterization results depicted the three-dimensional structure of the CTAB-MoS2/rGO nanohybrid, which possessed a larger specific surface area to provide more active reaction sites to boost its gas-sensing performance. Observations of the gas-sensing properties indicated that the CTAB-MoS2/rGO sensor performed a high response of 45.5% for 17.5 ppm NO2, a remarkable selectivity of NO2, an ultra-low detection limit of 26.55 ppb and long-term stability for a 30-day measurement. In addition, the response obtained for the CTAB-MoS2/rGO sensor was about two to four times that obtained for the MoS2/rGO sensor and the MoS2 sensor toward 8 ppm NO2, which correlated with the heterojunction between MoS2 and rGO, and the improvement in surface area and conductivity correlated with the introduction of CTAB and rGO. The excellent performance of the CTAB-MoS2/rGO sensor further suggested the advantage of CTAB in assisting a reliable detection of trace NO2 and an alternative method for highly efficiently detecting NO2 in the environment.

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Pan, Shugang, Ning Zhang, and Yongsheng Fu. "Preparation of Nanoplatelet-Like MoS2/rGO Composite as High-Performance Anode Material for Lithium-Ion Batteries." Nano 14, no. 03 (March 2019): 1950033. http://dx.doi.org/10.1142/s1793292019500334.

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In this paper, we report a facile strategy to design and prepare reduced graphene oxide (rGO) supported MoS2 nanoplatelet (MoS2/rGO) via a solvothermal co-assembly process. It is found that in the as-obtained MoS2/rGO nanocomposite, MoS2 possesses unique platelet structure and rGO is exfoliated due to the in situ growth of MoS2 nanoplatelet, leading to a large specific surface area, facilitating rapid diffusion of lithium ions. The nanocomposite is used as a promising anode material for lithium-ion batteries and displays a high initial charge capacity (1382[Formula: see text]mA[Formula: see text]h[Formula: see text]g[Formula: see text]), excellent rate capability and cycling stability. The remarkable lithium storage performance of MoS2/rGO nanocomposite is mainly ascribed to the inherent nanostructure of the MoS2, and the synergistic effect between rGO nanosheets and MoS2 nanoplatelets.

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Yang, Cheng, Yanyan Wang, Zhekun Wu, Zhanbo Zhang, Nantao Hu, and Changsi Peng. "Three-Dimensional MoS2/Reduced Graphene Oxide Nanosheets/Graphene Quantum Dots Hybrids for High-Performance Room-Temperature NO2 Gas Sensors." Nanomaterials 12, no. 6 (March 9, 2022): 901. http://dx.doi.org/10.3390/nano12060901.

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This study presents three-dimensional (3D) MoS2/reduced graphene oxide (rGO)/graphene quantum dots (GQDs) hybrids with improved gas sensing performance for NO2 sensors. GQDs were introduced to prevent the agglomeration of nanosheets during mixing of rGO and MoS2. The resultant MoS2/rGO/GQDs hybrids exhibit a well-defined 3D nanostructure, with a firm connection among components. The prepared MoS2/rGO/GQDs-based sensor exhibits a response of 23.2% toward 50 ppm NO2 at room temperature. Furthermore, when exposed to NO2 gas with a concentration as low as 5 ppm, the prepared sensor retains a response of 15.2%. Compared with the MoS2/rGO nanocomposites, the addition of GQDs improves the sensitivity to 21.1% and 23.2% when the sensor is exposed to 30 and 50 ppm NO2 gas, respectively. Additionally, the MoS2/rGO/GQDs-based sensor exhibits outstanding repeatability and gas selectivity. When exposed to certain typical interference gases, the MoS2/rGO/GQDs-based sensor has over 10 times higher sensitivity toward NO2 than the other gases. This study indicates that MoS2/rGO/GQDs hybrids are potential candidates for the development of NO2 sensors with excellent gas sensitivity.

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Verma, Dinesh, Nivedita Shukla, Bharat Kumar, Alok Singh, Kavita Shahu, Mithilesh Yadav, Kyong Rhee, and Rashmi Rastogi. "Synergistic Tribo-Activity of Nanohybrids of Zirconia/Cerium-Doped Zirconia Nanoparticles with Nano Lamellar Reduced Graphene Oxide and Molybdenum Disulfide." Nanomaterials 10, no. 4 (April 8, 2020): 707. http://dx.doi.org/10.3390/nano10040707.

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Zirconia and 10%, 20%, and 30% cerium-doped zirconia nanoparticles (ZCO), ZCO-1, ZCO-2, and ZCO-3, respectively, were prepared using auto-combustion method. Binary nanohybrids, ZrO2@rGO and ZCO-2@rGO (rGO = reduced graphene oxide), and ternary nanohybrids, ZrO2@rGO@MoS2 and ZCO-2@rGO@MoS2, have been prepared with an anticipation of a fruitful synergic effect of rGO, MoS2, and cerium-doped zirconia on the tribo-activity. Tribo-activity of these additives in paraffin oil (PO) has been assessed by a four-ball lubricant tester at the optimized concentration, 0.125% w/v. The tribo-performance follows the order: ZCO-2@rGO@MoS2 > ZrO2@rGO@MoS2 > ZCO-2@rGO > ZrO2@rGO > MoS2 > ZrO2 > rGO > PO. The nanoparticles acting as spacers control restacking of the nanosheets provided structural augmentation while nanosheets, in turn, prevent agglomeration of the nanoparticles. Doped nanoparticles upgraded the activity by forming defects. Thus, the results acknowledge the synergic effect of cerium-doped zirconia and lamellar nanosheets of rGO and MoS2. There is noncovalent interaction among all the individuals. Analysis of the morphological features of wear-track carried out by scanning electron microscopy (SEM) and atomic force microscopy (AFM) in PO and its formulations with various additives is consistent with the above sequence. The energy dispersive X-ray (EDX) spectrum of ZCO-2@rGO@MoS2 indicates the existence of zirconium, cerium, molybdenum, and sulfur on the wear-track, confirming, thereby, the active role played by these elements during tribofilm formation. The X-ray photoelectron spectroscopy (XPS) studies of worn surface reveal that the tribofilm is made up of rGO, zirconia, ceria, and MoS2 along with Fe2O3, MoO3, and SO42− as the outcome of the tribo-chemical reaction.

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Shakya, Jyoti, P. K. Kasana, and T. Mohanty. "Investigation of Swift Heavy Ion Irradiated Reduced Graphene Oxide (rGO)/Molybdenum Disulfide (MoS2) Nanocomposite Using Raman Spectroscopy." Journal of Nanoscience and Nanotechnology 20, no. 5 (May 1, 2020): 3174–81. http://dx.doi.org/10.1166/jnn.2020.17400.

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In this work, a few layer molybdenum disulfide (MoS2) and reduced graphene oxide (rGO) nanocomposite have been synthesized by liquid exfoliation method. The morphological and structural properties are analyzed using scanning electron microscopy and X-ray diffraction technique. The optical properties are also investigated using absorption and Raman spectroscopy. This report presents quantification of swift heavy ion irradiation induced defects using Raman spectroscopy. We found both Raman mode E12g and A1g corresponding to MoS2 and Raman modes of rGO are strongly affected by increasing ions doses. The defect induced lattice strain in the rGO/MoS2 nanocomposite is also estimated from Raman spectroscopy. MoS2 layers are found to be much more sensitive than rGO in the rGO/MoS2 nanocomposite. These types of study further used in device based application of rGO/MoS2 nanocomposite system.

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Chen, Beibei, Xiang Li, Yuhan Jia, Xiaofang Li, Mingsuo Zhang, and Jinze Dong. "Tribological properties of Fe–Ni-based composites with Ni-coated reduced graphene oxide–MoS2." Journal of Composite Materials 52, no. 19 (February 5, 2018): 2631–39. http://dx.doi.org/10.1177/0021998317752226.

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Fe–Ni-based composites with Ni-coated reduced grapheme oxide (RGO)–MoS2 were fabricated by powder metallurgy technique, and their morphology, phase composition, and tribological properties at different temperatures were investigated systematically. Results showed that Fe–Ni-based composite with Ni-coated RGO–MoS2 possessed much more uniform and denser microstructure, and higher hardness than that with RGO–MoS2. Furthermore, Ni-coated RGO–MoS2 additive greatly allowed increasing the friction-reducing and wear-resistant properties, due to the reinforcing and lubricating effect new phase (Fe3W3C, CrxS1+ x, etc.) and the improvement on interfacial compatibility between Ni-coated RGO–MoS2 and Fe–Ni matrix. In particular, as the content of Ni-coated RGO–MoS2 was 5 wt%, the friction coefficient and wear rate of the corresponding composite was decreased nearly 50% and 75%, respectively. More importantly, Ni-coated RGO–MoS2 reinforced composite kept excellent tribological properties at elevated temperature. Its friction coefficient decreased firstly with the increased temperature from 25℃ to 400℃, then increased slightly when the temperature increased to 600℃. Besides, the wear rate was only 0.73–0.9 × 10−4 mm3/Nm during the whole temperature range. This suggested that Ni-coated RGO–MoS2 was a promising additive of metallic-based composites suitable for high-temperature sliding condition.

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Phan, Thi Thuy Trang, Thi Thanh Huong Nguyen, Ha Tran Huu, Thanh Tam Truong, Le Tuan Nguyen, Van Thang Nguyen, Vy Anh Tran, Thi Lan Nguyen, Hong Lien Nguyen, and Vien Vo. "Hydrothermal Synthesis of MoS2/rGO Heterostructures for Photocatalytic Degradation of Rhodamine B under Visible Light." Journal of Nanomaterials 2021 (July 28, 2021): 1–11. http://dx.doi.org/10.1155/2021/9941202.

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MoS2/rGO composites were synthesized by hydrothermal method from the precursors of MoS2 and reduced graphene oxide (rGO) prepared in the former steps. The influence of the synthesis conditions including hydrothermal temperature and mass ratio of MoS2 to rGO on the structure, morphology, and optical absorption capacity of the MoS2/rGO composites was systematically investigated using physicochemical characterizations. The photocatalytic performance of as-prepared samples was investigated on the degradation of Rhodamine B under visible light, in which, the composites obtained at hydrothermal temperature of 180°C and MoS2/rGO mass ratio of 4/1 exhibited the highest photodegradation efficiency of approx. 80% after 4 hours of reaction. This enhancement in photocatalytic behaviour of composites could be assigned to the positive effect of rGO in life time expansion of photoinduced electrons—holes.

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Liu, Xuehua, Bingning Wang, Jine Liu, Zhen Kong, Binghui Xu, Yiqian Wang, and Hongliang Li. "MoS2 Layers Decorated RGO Composite Prepared by a One-Step High-Temperature Solvothermal Method as Anode for Lithium-Ion Batteries." Nano 13, no. 11 (November 2018): 1850135. http://dx.doi.org/10.1142/s1793292018501357.

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A one-step high-temperature solvothermal approach to the synthesis of monolayer or bilayer MoS2 anchored onto reduced graphene oxide (RGO) sheet (denoted as MoS2/RGO) is described. It was found that single-layered or double-layered MoS2 were synthesized directly without an extra exfoliation step and well dispersed on the surface of crumpled RGO sheets with random orientation. The prepared MoS2/RGO composites delivered a high reversible capacity of 900[Formula: see text]mAhg[Formula: see text] after 200 cycles at a current density of 200[Formula: see text]mAg[Formula: see text] as well as good rate capability as anode active material for lithium ion batteries. This one-step high-temperature hydrothermal strategy provides a simple, cost-effective and eco-friendly way to the fabrication of exfoliated MoS2 layers deposited onto RGO sheets.

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Ha, Enna, Zongyuan Xin, Danyang Li, Jingge Zhang, Tao Ji, Xin Hu, Luyang Wang, and Junqing Hu. "Dual-Modified Cu2S with MoS2 and Reduced Graphene Oxides as Efficient Photocatalysts for H2 Evolution Reaction." Catalysts 11, no. 11 (October 22, 2021): 1278. http://dx.doi.org/10.3390/catal11111278.

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Noble metal-free cocatalysts have drawn great interest in accelerating the catalytic reactions of metal chalcogenide semiconductor photocatalyst. In particular, great efforts have been made on modifying a semiconductor with dual cocatalysts, which show synergistic effect of a fast transfer of exciton and energy simultaneously. Herein, we report the dual-modified Cu2S with MoS2 and reduced graphene oxides (Cu2S-MoS2/rGO). The in situ growth of Cu2S nanoparticles in the presence of MoS2/rGO resulted in high density of nanoscale interfacial contacts among Cu2S nanoparticles, MoS2, and rGO, which is beneficial for reducing the photogenerated electrons’ and holes’ recombination. The Cu2S-MoS2/rGO system also demonstrated stable photocatalytic activity for H2 evolution reaction for the long term.

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Wang, Bingning, Xuehua Liu, Binghui Xu, Yanhui Li, Dan Xiu, Peizhi Guo, and Hongliang Li. "A Facile One-Pot Stepwise Hydrothermal Method for the Synthesis of 3D MoS2/RGO Composites with Improved Lithium Storage Properties." Nano 14, no. 03 (March 2019): 1950037. http://dx.doi.org/10.1142/s1793292019500371.

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Three-dimensional reduced graphene oxide (RGO) matrix decorated with nanoflowers of layered MoS2 (denoted as 3D MoS2/RGO) have been synthesized via a facile one-pot stepwise hydrothermal method. Graphene oxide (GO) is used as precursor of RGO and a 3D GO network is formed in the first-step of hydrothermal treatment. At the second stage of hydrothermal treatment, nanoflowers of layered MoS2 form and anchor on the surface of previously formed 3D RGO network. In this preparation, thiourea not only induces the formation of the 3D architecture at a relatively low temperature, but also works as sulfur precursor of MoS2. The synthesized composites have been investigated with XRD, SEM, TEM, Raman spectra, TGA, N2 sorption technique and electrochemical measurements. In comparison with normal MoS2/RGO composites, the 3D MoS2/RGO composite shows improved electrochemical performance as anode material for lithium-ion batteries. A high reversible capacity of 930[Formula: see text]mAh[Formula: see text][Formula: see text][Formula: see text]g[Formula: see text] after 130 cycles under a current density of 200[Formula: see text]mA[Formula: see text][Formula: see text][Formula: see text]g[Formula: see text] as well as good rate capability and superior cyclic stability have been observed. The superior electrochemical performance of the 3D MoS2/RGO composite as anode active material for lithium-ion battery is ascribed to its robust 3D structures, enhanced surface area and the synergistic effect between graphene matrix and the MoS2 nanoflowers subunit.

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Sun, Qihua, Zhaofeng Wu, Haiming Duan, and Dianzeng Jia. "Detection of Triacetone Triperoxide (TATP) Precursors with an Array of Sensors Based on MoS2/RGO Composites." Sensors 19, no. 6 (March 13, 2019): 1281. http://dx.doi.org/10.3390/s19061281.

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Triacetone triperoxide (TATP) is a self-made explosive synthesized from the commonly used chemical acetone (C3H6O) and hydrogen peroxide (H2O2). As C3H6O and H2O2 are the precursors of TATP, their detection is very important due to the high risk of the presence of TATP. In order to detect the precursors of TATP effectively, hierarchical molybdenum disulfide/reduced graphene oxide (MoS2/RGO) composites were synthesized by a hydrothermal method, using two-dimensional reduced graphene oxide (RGO) as template. The effects of the ratio of RGO to raw materials for the synthesis of MoS2 on the morphology, structure, and gas sensing properties of the MoS2/RGO composites were studied. It was found that after optimization, the response to 50 ppm of H2O2 vapor was increased from 29.0% to 373.1%, achieving an increase of about 12 times. Meanwhile, all three sensors based on MoS2/RGO composites exhibited excellent anti-interference performance to ozone with strong oxidation. Furthermore, three sensors based on MoS2/RGO composites were fabricated into a simple sensor array, realizing discriminative detection of three target analytes in 14.5 s at room temperature. This work shows that the synergistic effect between two-dimensional RGO and MoS2 provides new possibilities for the development of high performance sensors.

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Choi, Hyeonggeun, Suok Lee, Min-Cheol Kim, Yeonsu Park, A.-Rang Jang, Wook Ahn, Jung Inn Sohn, Jong Bae Park, John Hong, and Young-Woo Lee. "Hierarchically Ordinated Two-Dimensional MoS2 Nanosheets on Three-Dimensional Reduced Graphene Oxide Aerogels as Highly Active and Stable Catalysts for Hydrogen Evolution Reaction." Catalysts 11, no. 2 (January 30, 2021): 182. http://dx.doi.org/10.3390/catal11020182.

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Hydrogen gas (H2) is being intensively proposed as a next-generation clean energy owing to the depletion of fossil fuels. Electrochemical water splitting is one of the most promising processes for hydrogen production. Furthermore, many efforts focusing on electrochemical water splitting have been made to develop low-cost, electrochemically active, and stable catalysts for efficient hydrogen production. MoS2 has emerged as an attractive material for developing catalysts for the hydrogen evolution reaction (HER). Hence, in this study, we design hierarchically ordinated two-dimensional (2D) MoS2 nanosheets on three-dimensional (3D) reduced graphene oxide (rGO) (H-2D/3D-MoS2-rGO) aerogel structures as a new class of electrocatalysts for the HER. We use the one-pot hydrothermal synthesis route for developing high-performance electroactive materials for the HER. The as-prepared H-2D/3D-MoS2-rGO contains a unique 3D hierarchical structure providing large surface areas owing to the 3D porous networks of rGO and more active sites owing to the many edge sites in the MoS2 nanosheets. In addition, the H-2D/3D-MoS2-rGO structure exhibits remarkable electrochemical properties during the HER. It shows a lower overpotential than pure MoS2 and excellent electrochemical stability owing to the large number of active sites (highly exposed edge sites) and high electrical conductivity from the rGO structure.

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Ong, Wei, Ho Mui Yen, Peck Loo Kiew, Teck Hock Lim, Khok Lun Leong, Shuan Yao Tan, and Jin Xiang Lim. "In2O3/MoS2/Reduced Graphene Oxide Nanostructure as Composite Electrodes for Supercapacitors." Key Engineering Materials 936 (December 14, 2022): 63–71. http://dx.doi.org/10.4028/p-bb4r2i.

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In this study, a novel reduced graphene oxide, indium (III) oxide, and molybdenum disulfide (rGO/In2O3/MoS2) ternary composite for supercapacitor electrode application was developed via green hydrothermal synthesis. The topography, surface morphology, crystalline structure, phase identification and molecular structure of the composites were examined by applying Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDX), Transmission Electron Microscopy (TEM), X-ray Diffraction Spectroscopy (XRD), X-Ray Photoelectron Spectroscopy (XPS), and Raman Spectroscopy. SEM and TEM reveal the uniform dispersion of In2O3 nanoparticles on the rGO and MoS2 sheets. EDX, XRD, and XPS analysis confirm the coexistences of rGO, In2O3, and MoS2, and hence the composite formation. The electrochemical performances of rGO/In2O3/MoS2 ternary composite were evaluated by cyclic voltammetry (CV) in two-electrode configuration in 1 M sodium sulfite (Na2SO3) aqueous electrolyte. The electrochemical results show that the rGO/In2O3/MoS2 composite electrodes possess improved specific capacitance of 77 F/g at a scan rate of 25 mV/s, a modest 29% enhancement over pure In2O3 and In2O3/MoS2 binary composite.

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Wu, Yanju, Didi Liu, Jiahua Guo, and Fei Wang. "A molybdenum disulfide-reduced graphene oxide nanocomposite as an electrochemical sensing platform for detecting cyproterone acetate." New Journal of Chemistry 46, no. 11 (2022): 5385–92. http://dx.doi.org/10.1039/d1nj05225j.

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Tian, Chengxiang, Juwei Wu, Zheng Ma, Bo Li, Pengcheng Li, Xiaotao Zu, and Xia Xiang. "Design and facile synthesis of defect-rich C-MoS2/rGO nanosheets for enhanced lithium–sulfur battery performance." Beilstein Journal of Nanotechnology 10 (November 14, 2019): 2251–60. http://dx.doi.org/10.3762/bjnano.10.217.

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We report a simple one-step hydrothermal strategy for the fabrication of a C-MoS2/rGO composite with both large surface area and high porosity for the use as advanced electrode material in lithium–sulfur batteries. Double modified defect-rich MoS2 nanosheets are successfully prepared by introducing reduced graphene oxide (rGO) and amorphous carbon. The conductibility of the cathodes can be improved through the combination of amorphous carbon and rGO, which could also limit the dissolution of polysulfides. After annealing at different temperatures, it is found that the C-MoS2/rGO-6-S composite annealed at 600 °C yields a noticeably enhanced performance of lithium–sulfur batteries, with a high specific capacity of 572 mAh·g−1 at 0.2C after 550 cycles, and 551 mAh·g−1 even at 2C, much better than that of MoS2-S nanosheets (249 mAh·g−1 and 149 mAh·g−1) and C-MoS2/rGO-S composites (334 mAh·g−1 and 382 mAh·g−1). Our intended electrode design protocol and annealing process may pave the way for the construction of other high-performance metal disulfide electrodes for electrochemical energy storage.

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Liu, Shixing, Xingnan Liu, Baozhu Xie, Xin Liu, and Haibing Hu. "Highly Sensitive Electrochemical Pb(II) Sensors Based on MoS₂/rGO Nanocomposites by Square Wave Voltammetry." Journal of The Electrochemical Society 169, no. 7 (July 1, 2022): 077509. http://dx.doi.org/10.1149/1945-7111/ac8020.

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Currently, heavy metal ion contamination in water is becoming more and more common, especially Pb(II), which is a serious threat to human health. In this experiment, MoS2/rGO nanocomposites were used to modify glassy carbon electrodes and square wave voltammetry(SWV) electrochemical detection method was selected to detect trace Pb(II) in water. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) showed that MoS2 nanoparticles were uniformly distributed on the rGO films. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) showed that MoS2/rGO has higher sensitivity and conductivity. After determining the optimal experimental parameters, the MoS2/rGO modified glassy carbon electrodes exhibited high sensitivity (57.57 μA μM−1) and low limit of detection (0.060 μM) for Pb(II) as well as good interference resistance and stability.

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Reddy, Bhumi Reddy Srinivasulu, Mookala Premasudha, Yeon-Ju Lee, Hyo-Jun Ahn, Nagireddy Gari Subba Reddy, Jou-Hyeon Ahn, and Kwon-Koo Cho. "Synthesis and Electrochemical Properties of MoS2/rGO/S Composite as a Cathode Material for Lithium–Sulfur Batteries." Journal of Nanoscience and Nanotechnology 20, no. 11 (November 1, 2020): 7087–91. http://dx.doi.org/10.1166/jnn.2020.18826.

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To develop the next-generation energy storage systems, lithium-sulfur batteries represent an attractive option due to its high theoretical capacity, and energy density. In this work, MoS2/rGO (reduced graphene oxide) was prepared by hydrothermal synthesis and sulfur added by the melt diffusion method. The as-prepared MoS2/rGO has strong polysulfides entrapping, high conductivity, large surface area, and high catalytic activity, consequently resulting in enhanced rate performance and cycling capability of Li-S batteries. The coin cells were constructed with the MoS2/rGO/S cathode material, exhibit a high reversible capacity of nearly 1380 mAh/g at 0.1 C, outstanding cycling stability with a low capacity fading rate. Present work reveals that the hierarchal MoS2/rGO/S cathodes are potential candidate materials for future high-performance lithium-sulfur batteries.

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Liu, Guangsheng, Kunyapat Thummavichai, Xuefeng Lv, Wenting Chen, Tingjun Lin, Shipeng Tan, Minli Zeng, Yu Chen, Nannan Wang, and Yanqiu Zhu. "Defect-Rich Heterogeneous MoS2/rGO/NiS Nanocomposite for Efficient pH-Universal Hydrogen Evolution." Nanomaterials 11, no. 3 (March 8, 2021): 662. http://dx.doi.org/10.3390/nano11030662.

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Molybdenum disulfide (MoS2) has been universally demonstrated to be an effective electrocatalytic catalyst for hydrogen evolution reaction (HER). However, the low conductivity, few active sites and poor stability of MoS2-based electrocatalysts hinder its hydrogen evolution performance in a wide pH range. The introduction of other metal phases and carbon materials can create rich interfaces and defects to enhance the activity and stability of the catalyst. Herein, a new defect-rich heterogeneous ternary nanocomposite consisted of MoS2, NiS and reduced graphene oxide (rGO) are synthesized using ultrathin αNi(OH)2 nanowires as the nickel source. The MoS2/rGO/NiS-5 of optimal formulation in 0.5 M H2SO4, 1.0 M KOH and 1.0 M PBS only requires 152, 169 and 209 mV of overpotential to achieve a current density of 10 mA cm−2 (denoted as η10), respectively. The excellent HER performance of the MoS2/rGO/NiS-5 electrocatalyst can be ascribed to the synergistic effect of abundant heterogeneous interfaces in MoS2/rGO/NiS, expanded interlayer spacings, and the addition of high conductivity graphene oxide. The method reported here can provide a new idea for catalyst with Ni-Mo heterojunction, pH-universal and inexpensive hydrogen evolution reaction electrocatalyst.

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Wu, Huaping, Ye Qiu, Junma Zhang, Guozhong Chai, Congda Lu, and Aiping Liu. "One-step hydrothermal synthesis of NiS/MoS2-rGO composites and their application as catalysts for hydrogen evolution reaction." Functional Materials Letters 09, no. 05 (October 2016): 1650058. http://dx.doi.org/10.1142/s1793604716500582.

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The composites of sulphide and reduced graphene oxide (NiS/MoS2-rGO) were synthesized through a facile solvent-assisted hydrothermal method. The introduction of NiS was paramount not only in enhancing the conductivity of whole catalysts but also in modulating the layer structures of MoS2 with additional active sites. Moreover, the NiS and rGO functioned together in controlling the morphology of as-prepared composites, resulting in uniformly distributed NiS/MoS2 nanosheets perpendicular to rGO scaffold. This further contributed to the excellent hydrogen evolution performance of the composites with a small onset overpotential of 80[Formula: see text]mV and Tafel slope as low as 65[Formula: see text]mV/decade.

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Trang Phan, Thi Thuy, Thanh Tam Truong, Ha Tran Huu, Le Tuan Nguyen, Van Thang Nguyen, Hong Lien Nguyen, and Vien Vo. "Visible Light-Driven Mn-MoS2/rGO Composite Photocatalysts for the Photocatalytic Degradation of Rhodamine B." Journal of Chemistry 2020 (August 13, 2020): 1–10. http://dx.doi.org/10.1155/2020/6285484.

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The n%Mn-MoS2/rGO (labeled as n%MMS/rGO, where n% = Mn/(Mn + Mo) in mol) composites were successfully prepared by a facile hydrothermal method from the Mn-MoS2 (MMS) and rGO precursors, in which the MMS was obtained by a facile one-step calcination of (NH4)6Mo7O24·4H2O, (NH2)2CS, and Mn(CH3COO)2·4H2O as precursors in N2 gas at 650°C. The samples were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), electron paramagnetic resonance spectroscopy (EPR), UV-visible diffuse reflectance spectroscopy (UV-Vis DRS), and X-ray photoelectron spectroscopy (XPS), which indicates the composites containing nanosheets of Mn-MoS2 and rGO components. The photocatalytic activities of the n%MMS/rGO composite photocatalysts were evaluated through the photodegradation of rhodamine B (RhB) under the visible light irradiation. The enhancement in the photocatalytic performance of the achieved composites was attributed to the synergic effect of Mn doping and rGO matrix. The investigation of photocatalytic mechanism was also conducted.

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Yao, Gabriel Tan Shuan, Ho Mui Yen, Leong Khok Lun, Ong Wei, and Lim Jin Xiang. "Synthesis of Graphene/Silver/Molybdenum Disulphide Composite for Supercapacitor Application." Materials Science Forum 1054 (February 24, 2022): 21–30. http://dx.doi.org/10.4028/p-u48e5d.

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In this study, pristine graphene/silver/molybdenum disulphide (G/Ag/MoS2) and reduced graphene oxide/silver/molybdenum disulphide (rGO/Ag/MoS2) composites materials were prepared via green solvothermal synthesis method and evaluated as supercapacitor electrodes. The morphology and structure of composites were examined by using Scanning Electron Microscopy (SEM), Energy dispersive spectroscopy (EDX), X-ray diffraction spectroscopy (XRD), and Raman spectroscopy. SEM and TEM indicate successful reduction of silver nitrate (AgNO3) to spherical Ag nanoparticles (NPs) by sodium citrate. The Ag NPs were observed to be evenly deposited on sheets of rGO and MoS2. From the XPS analysis, the spherical Ag NPs exist in zero-valent state, reflecting successful reduction. Based on cyclic voltammetry (CV) performed under 50 mV/s scan rate, G/Ag/MoS2 ternary composite exhibits the highest specific capacitance of 56.38 F/g which is 31 % and 29 % enhancement in specific capacitance of rGO/Ag/MoS2 ternary composite and Ag/MoS2 binary composite, respectively. It is believed that the presence of graphene may provide conductive pathway and a larger surface area for the distribution of Ag NPs.

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Bai, Xiaoyan, Tianqi Cao, Tianyu Xia, Chenxiao Wu, Menglin Feng, Xinru Li, Ziqing Mei, et al. "MoS2/NiSe2/rGO Multiple-Interfaced Sandwich-like Nanostructures as Efficient Electrocatalysts for Overall Water Splitting." Nanomaterials 13, no. 4 (February 16, 2023): 752. http://dx.doi.org/10.3390/nano13040752.

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Constructing a heterogeneous interface using different components is one of the effective measures to achieve the bifunctionality of nanocatalysts, while synergistic interactions between multiple interfaces can further optimize the performance of single-interface nanocatalysts. The non-precious metal nanocatalysts MoS2/NiSe2/reduced graphene oxide (rGO) bilayer sandwich-like nanostructure with multiple well-defined interfaces is prepared by a simple hydrothermal method. MoS2 and rGO are layered nanostructures with clear boundaries, and the NiSe2 nanoparticles with uniform size are sandwiched between both layered nanostructures. This multiple-interfaced sandwich-like nanostructure is prominent in catalytic water splitting with low overpotential for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) and almost no degradation in performance after a 20 h long-term reaction. In order to simulate the actual overall water splitting process, the prepared nanostructures are assembled into MoS2/NiSe2/rGO||MoS2/NiSe2/rGO modified two-electrode system, whose overpotential is only 1.52 mV, even exceeded that of noble metal nanocatalyst (Pt/C||RuO2~1.63 mV). This work provides a feasible idea for constructing multi-interface bifunctional electrocatalysts using nanoparticle-doped bilayer-like nanostructures.

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Cho, Su-Ho, Jong-Heon Kim, Il-Gyu Kim, Jeong-Ho Park, Ji-Won Jung, Hyun-Suk Kim, and Il-Doo Kim. "Reduced Graphene-Oxide-Encapsulated MoS2/Carbon Nanofiber Composite Electrode for High-Performance Na-Ion Batteries." Nanomaterials 11, no. 10 (October 13, 2021): 2691. http://dx.doi.org/10.3390/nano11102691.

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Sodium-ion batteries (SIBs) have been increasingly studied due to sodium (Na) being an inexpensive ionic resource (Na) and their battery chemistry being similar to that of current lithium-ion batteries (LIBs). However, SIBs have faced substantial challenges in developing high-performance anode materials that can reversibly store Na+ in the host structure. To address these challenges, molybdenum sulfide (MoS2)-based active materials have been considered as promising anodes, owing to the two-dimensional layered structure of MoS2 for stably (de)inserting Na+. Nevertheless, intrinsic issues of MoS2—such as low electronic conductivity and the loss of active S elements after a conversion reaction—have limited the viability of MoS2 in practical SIBs. Here, we report MoS2 embedded in carbon nanofibers encapsulated with a reduced graphene oxide (MoS2@CNFs@rGO) composite for SIB anodes. The MoS2@CNFs@rGO delivered a high capacity of 345.8 mAh g−1 at a current density of 100 mA g−1 for 90 cycles. The CNFs and rGO were synergistically taken into account for providing rapid pathways for electrons and preventing the dissolution of S sources during repetitive conversion reactions. This work offers a new point of view to realize MoS2-based anode materials in practical SIBs.

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Cho, Su-Ho, Jong-Heon Kim, Il-Gyu Kim, Jeong-Ho Park, Ji-Won Jung, Hyun-Suk Kim, and Il-Doo Kim. "Reduced Graphene-Oxide-Encapsulated MoS2/Carbon Nanofiber Composite Electrode for High-Performance Na-Ion Batteries." Nanomaterials 11, no. 10 (October 13, 2021): 2691. http://dx.doi.org/10.3390/nano11102691.

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Sodium-ion batteries (SIBs) have been increasingly studied due to sodium (Na) being an inexpensive ionic resource (Na) and their battery chemistry being similar to that of current lithium-ion batteries (LIBs). However, SIBs have faced substantial challenges in developing high-performance anode materials that can reversibly store Na+ in the host structure. To address these challenges, molybdenum sulfide (MoS2)-based active materials have been considered as promising anodes, owing to the two-dimensional layered structure of MoS2 for stably (de)inserting Na+. Nevertheless, intrinsic issues of MoS2—such as low electronic conductivity and the loss of active S elements after a conversion reaction—have limited the viability of MoS2 in practical SIBs. Here, we report MoS2 embedded in carbon nanofibers encapsulated with a reduced graphene oxide (MoS2@CNFs@rGO) composite for SIB anodes. The MoS2@CNFs@rGO delivered a high capacity of 345.8 mAh g−1 at a current density of 100 mA g−1 for 90 cycles. The CNFs and rGO were synergistically taken into account for providing rapid pathways for electrons and preventing the dissolution of S sources during repetitive conversion reactions. This work offers a new point of view to realize MoS2-based anode materials in practical SIBs.

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Phan Thi Thuy, Trang, Tam Truong Thanh, Vien Vo, and Lien Nguyen Hong. "Study on the adsorption of Rhodamine B on MoS2/RGO composite." Vietnam Journal of Catalysis and Adsorption 9, no. 4 (December 31, 2020): 57–63. http://dx.doi.org/10.51316/jca.2020.070.

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In this study, MoS2/RGO (reduced graphene oxide) composite material was synthesized and tested for adsorption of RhB in water. The adsorption studies were carried out at room temperature and the effects of pH, amount of adsorbents, concentration of adsorbate and time of adsorption on the adsorption were measured. In addition, the dynamics of the adsorption process was also investigated. The results showed that the MoS2/RGO composite displayed toward RhB with maximum adsorption capacity reaching q = 57.79 mg/g at pH = 3.54 and the adsorption process follows the Langmuir adsorption isotherm with the pseudo-second-order model. Findings from this research indicated that the graphene based semiconductor MoS2/RGO composite could be considered a promising adsorbent for removal of organic dyes from waste waters.

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Machín, Abniel, Loraine Soto-Vázquez, Diego García, María C. Cotto, Dayna Ortiz, Pedro J. Berríos-Rolón, Kenneth Fontánez, et al. "Photodegradation of Ciprofloxacin and Levofloxacin by Au@ZnONPs-MoS2-rGO Nanocomposites." Catalysts 13, no. 3 (March 7, 2023): 538. http://dx.doi.org/10.3390/catal13030538.

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This study aimed to investigate the photocatalytic performance of diverse zinc oxide catalysts containing gold nanoparticles (AuNPs), molybdenum disulfide (MoS2), and reduced graphene oxide (rGO) toward the degradation of the antibiotics levofloxacin (LFX) and ciprofloxacin (CFX) in aqueous solutions. The obtained results demonstrate that LFX is more resistant to degradation when compared with CFX and that the principal route of degradation under visible light is the formation of hydroxyl radicals. Photoluminescence (PL) measurements were employed to verify the inhibitory effect of electron–hole recombination when AuNPs, MoS2, and rGO are integrated into a semiconductor. The catalyst that achieved the highest percentage of CFX degradation was 1%Au@ZnONPs-3%MoS2-1%rGO, exhibiting a degradation efficiency of 96%, while the catalyst that exhibited the highest percentage of LFX degradation was 5%Au@ZnONPs-3%MoS2-1%rGO, displaying a degradation efficiency of 99.8%. A gas chromatography–mass spectrometry (GC-MS) analysis enabled the identification of reaction intermediates, facilitating the determination of a potential degradation pathway for both antibiotics. Additionally, recyclability assessments showed that the synthesized catalysts maintained stable photocatalytic efficiencies after 15 cycles, indicating that the heterostructures have the potential for further usage and may be tested with other organic contaminants as well.

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Manoharan, Anishkumar, Z. Ryan Tian, and Simon S. Ang. "MoS2/Reduced Graphene Oxide-Based 2D Nancomposites for Boosting the Energy Density of Electric Double-Layer Capacitor." MRS Advances 1, no. 22 (2016): 1619–24. http://dx.doi.org/10.1557/adv.2016.140.

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ABSTRACTA method for synthesizing and structuring 2D-MoS2/rGO (molybdenum disulfide/reduced graphene oxide) nanocomposite-based electric double layer capacitor (EDLC) that has a slower discharge rate and higher energy density than rGO-based EDLC (RG-EDLC) is reported. The rGO electrode and the nanocomposite were characterized using powder XRD and SEM for their physical and structural properties. Cyclic voltammetry (CV) was used to analyze the electrochemical behavior of the EDLCs. A maximum current density at which the MoS2/rGO nanocomposite-based EDLC (MRG-EDLC) can charge and discharge was 2.5 A/g, while it was 1A/g for the RG-EDLC. The specific capacitance of the MRG-EDLC was 14.52 F/g at 0.5 A/g with an energy density of 8.06 Wh/kg.

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Ren, Zhe, Yunbo Shi, Tianming Song, Tian Wang, Bolun Tang, Haodong Niu, and Xiaoyu Yu. "Flexible Low-Temperature Ammonia Gas Sensor Based on Reduced Graphene Oxide and Molybdenum Disulfide." Chemosensors 9, no. 12 (December 7, 2021): 345. http://dx.doi.org/10.3390/chemosensors9120345.

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Owing to harsh working environments and complex industrial requirements, traditional gas sensors are prone to deformation damage, possess a limited detection range, require a high working temperature, and display low reliability, thereby necessitating the development of flexible and low-temperature gas sensors. In this study, we developed a low-temperature polyimide (PI)-based flexible gas sensor comprising a reduced graphene oxide (rGO)/MoS2 composite. The micro-electro-mechanical system technology was used to fabricate Au electrodes on a flexible PI sheet to form a “sandwiched” sensor structure. The rGO/MoS2 composites were synthesized via a one-step hydrothermal method. The gas-sensing response was the highest for the composite comprising 10% rGO. The structure of this material was characterized, and a PI-based flexible gas sensor comprising rGO/MoS2 was fabricated. The optimal working temperature of the sensor was 141 °C, and its response-recovery time was significantly short upon exposure to 50–1500 ppm NH3. Thus, this sensor exhibited high selectivity and a wide NH3 detection range. Furthermore, it possessed the advantages of low power consumption, a short response-recovery time, a low working temperature, flexibility, and variability. Our findings provide a new framework for the development of pollutant sensors that can be utilized in an industrial environment.

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Zhang, Zhi, Xuliang Lv, Yiwang Chen, Pin Zhang, Mingxu Sui, Hui Liu, and Xiaodong Sun. "NiS2@MoS2 Nanospheres Anchored on Reduced Graphene Oxide: A Novel Ternary Heterostructure with Enhanced Electromagnetic Absorption Property." Nanomaterials 9, no. 2 (February 19, 2019): 292. http://dx.doi.org/10.3390/nano9020292.

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For the purposes of strength, military equipment camouflage, and protecting the health of organisms, electromagnetic wave absorbing materials have received a lot of attention and are widely studied. In addition to having a strong absorption intensity and a wide effective absorption bandwidth, materials that are lightweight, thermally stable, and antioxidative are also highly desirable. In this study, we fabricated core–shell structured NiS2@MoS2 nanospheres anchored on reduced graphene oxide (rGO) nanosheets (NiS2@MoS2/rGO) by a simple two-step hydrothermal method. The combination ratio was adjusted to achieve proper impedance matching. The electromagnetic parameters and the absorption performance were investigated in detail. A composite loaded with 30 wt.% of the sample achieved a minimum reflection loss (RL) value of −29.75 dB and the effective bandwidth (RL value of less than −10 dB) ranged from 4.95 GHz to 18.00 GHz (13.05 GHz), with a thickness ranging from 1.5 mm to 4.0 mm. This study proved that the generated significant interfacial polarization and synergetic interaction between components can result in NiS2@MoS2/rGO composites with enhanced electromagnetic absorption performance.

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Ates, Murat. "CuO and MoS2 difference including S -rGO and PPy nanocomposite for SupercapBattery device." International Conference on Scientific and Innovative Studies 1, no. 1 (April 14, 2023): 387–91. http://dx.doi.org/10.59287/icsis.630.

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In this study, electrochemical performances of Copper (II) oxide (CuO) and Molybdenum (IV)sulfide (MoS2) were comparatively investigated by cyclic voltammetry (CV), galvanostatic chargedischarge (GCD) and electrochemical impedance spectroscopy (EIS) measurements. We have designedSupercapBattery with Al and Cu electrodes on 2032 coin cell. Ionic liquid (1-butyl-3-methylimidazoliumtetra fluoroborate) was used to carry out electrolyte between the anode and cathode compartments. Thehighest specific capacitance was obtained as Csp= 1110.32 F×g-1at 2 mV×s-1by CV method for SrGO/MoS2/PPy nanocomposite. CuO was seriously reduced the electrochemical performances ofSupercapBattery device (Csp= 113.10 F×g-1at 2 mV×s-1by CV method) for S-rGO/CuO/PPynanocomposite. (Electrode weights were obtained as 19.8 mg and 21.8 mg for S-rGO/MoS2/PPy and SrGO/CuO/PPy nanocomposites, respectively).

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Sreedhara, M. B., A. L. Santhosha, Aninda J. Bhattacharyya, and C. N. R. Rao. "Composite of few-layer MoO3nanosheets with graphene as a high performance anode for sodium-ion batteries." Journal of Materials Chemistry A 4, no. 24 (2016): 9466–71. http://dx.doi.org/10.1039/c6ta02561g.

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A composite anode comprising of a 3D network of few-layer MoO₃nanosheets with an optimum amount of rGO exhibits excellent Na-ion cyclability over wide ranging values of operating current densities. Ultrathin nanosheets of MoO₃are synthesized by oxidation of MoS2 nanosheets and are tagged with optimum amounts of rGO.

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Gupta, Jyoti, Prachi Singhal, and S. Sunita Rattan. "Microwave Assisted Synthesis of Molybdenum Disulphide/Tungsten Trioxide/Reduced Graphene Oxide (MoS2/WO3/RGO) Nanocomposites for Organic Vapor Sensing." IOP Conference Series: Materials Science and Engineering 1225, no. 1 (February 1, 2022): 012001. http://dx.doi.org/10.1088/1757-899x/1225/1/012001.

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Abstract Hybrid nanostructures based on two-dimensional (2-D) materials such as transition metal dichalcogenides (2-D TMD’s), transition metal oxides (2-D TMO’s), and graphene are gaining significant attention for their potential application as semiconductor sensing devices owing to their excellent structural, electronic, and optical characteristics. The present work reported 2-D ternary nanocomposites (MoS2/WO3/RGO) as organic vapor sensing material, synthesized using microwave assisted method. Formation of ternary composite system proves to be an efficient strategy to develop novel high performance vapour sensors, providing multiple degrees of freedom and opportunity to exploit the synergistic properties of the resulting material to its full potential for a particular application. The synthesized MoS2/WO3/RGO nanocomposites has been characterized for morphological, and structural analysis through SEM, XRD and FTIR spectroscopic techniques. The electrical and sensing studies of synthesized material is evaluated through IV characteristics using Keithley electrometer. The sensing characteristics has revealed that the synthesized sensor has high sensitivity, good stability at room temperature and outperforms the result obtained from single or binary counterparts. The formation of the heterojunction and electronic modulations at the interface of MoS2, WO3 and RGO results in improved surface charge transfer mechanism and enhancement of sensing performance.

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Peng, Gang, Xu Zhang, Kaiwen Zhang, Xiaojun Chen, and He Huang. "A Novel Ochratoxin A Aptasensor Based on Three-Dimensionally Ordered Macroporous RGO-AuNPs-MoS2 Enhanced Electrocatalysis of Methylene Blue and AuNPs-Fe3O4@C Composite as Signal Probe Carrier." Catalysts 13, no. 7 (July 11, 2023): 1088. http://dx.doi.org/10.3390/catal13071088.

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In this work, a novel electrochemical aptasensor for the detection of ochratoxin A (OTA) was developed using a three-dimensionally ordered macroporous (3DOM) reduced graphene oxide–Au nanoparticles–molybdenum disulfide (RGO-AuNPs-MoS2) composite material as the sensing interface and Au nanoparticles–carbon-coated ferroferric oxide (AuNPs-Fe3O4@C) composite as the signal amplifier. The 3DOM RGO-AuNPs-MoS2 composite exhibited excellent conductivity and catalytic activity. The 3DOM RGO-AuNPs-MoS2 film was electrodeposited onto the Au electrode surface to immobilize DNA capture probe (CP), which was then hybridized with DNA helper strands (HS) and OTA aptamer (OPT) to form a Y-shaped structure. In the presence of OTA, the OPT was released from the electrode and then combined with AuNPs-Fe3O4@C containing the signal DNA1-metheylene blue (S1-MB) and DNA2-metheylene blue (S2-MB). The current response coming from MB was proportional with the OTA concentration. Under optimal conditions, the linear range of the aptasensor was 1 fg/mL to 0.1 μg/mL, with a detection limit as low as 0.56 fg/mL. The aptasensor was also used to detect OTA in rice and wheat samples, and the results were in agreement with those obtained by liquid chromatography-mass spectrometry (HPLC-MS).

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Chen, Xue, and Yongcun Pei. "Application of Graphene-Based Nanocomposites in Electrochemical Detection of Heavy Metal Ions." Science of Advanced Materials 12, no. 3 (March 1, 2020): 435–40. http://dx.doi.org/10.1166/sam.2020.3607.

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The purpose of this study was to explore the application of graphene-based nanocomposites in electrochemical detection of heavy metal ions. In this study, Graphene oxide (GO) was synthesized with improved Hummers method, and flower-like MoS2/rGO nanocomposite was synthesized with hydrothermal method and used as electrode modification material. In addition, scanning electron microscopy (SEM) and X-ray images were used to observe the characterization of the prepared samples and to detect the sensitivity of four heavy metal ions under optimal experimental conditions. The results showed that the reduced graphene oxides were coated with a large number of flower-like MoS2 and laid on the reduced graphene oxides. And in electrochemical experiments, adsorption experiments and interference tests, MoS2/rGO nanocomposites showed satisfactory performance for Pb(II). Therefore, this study provided a new strategy for the development of new nanocomposites composites as electrochemical sensors to detect the heavy metal ions in the aquatic environment.

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Xu, Lei, Zhipeng Gong, Yinglin Qiu, Wenbo Wu, Zunxian Yang, Bingqing Ye, Yuliang Ye, et al. "Superstructure MOF as a framework to composite MoS₂ with rGO for Li/Na-ion battery storage with high-performance and stability." Dalton Transactions 51, no. 9 (2022): 3472–84. http://dx.doi.org/10.1039/d1dt03949k.

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The hybrid with super-structures is an effective strategy to improve their electrochemical performance. The Fe7S8-C/ZnS-C@MoS2/rGO sample delivered high reversible capacities in Lithium/sodium storage.

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Cravanzola, Sara, Federico Cesano, Giuliana Magnacca, Adriano Zecchina, and Domenica Scarano. "Designing rGO/MoS2 hybrid nanostructures for photocatalytic applications." RSC Advances 6, no. 64 (2016): 59001–8. http://dx.doi.org/10.1039/c6ra08633k.

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Graphene and MoS₂, with their structural and morphological compatibility, can be well integrated to make new hybrid materials with enhanced catalytic properties, including the photodegradation of organic pollutants.

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Muniyappa, Murthy, Mahesh Shastri, Manjunath Shetty, Vinay Gangaraju, Jagadeesh Babu Sriramoju, Sindhushree Muralidhar, Manikanta P. Narayanaswamy, et al. "Exfoliation of MoS2-RGO Hybrid 2D Sheets by Supercritical Fluid Process." Asian Journal of Chemistry 34, no. 4 (2022): 1009–14. http://dx.doi.org/10.14233/ajchem.2022.23707.

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Layered 2D transition metal dichalcogenides (TMD’s) have been considered as an important class of materials in the field of energy and environmental applications. Therefore, it is desirable to fabricate 2D hybrid TMD’s materials in simple solution processing methods. In this study, MoS2-RGO hybrid 2D few layered sheets are produced by supercritical fluid process (SCF) by using ethanol as solvent at 250 ºC in a short duration of 0.5 h. Atomic force microscopy (AFM), transmission electron microscope (TEM) and scanning electron microscope (SEM) images confirmed the formation of 2D hybrid few layered sheets. The electrochemical impedance measurement indicates fivefold increase in conductivity of bulk MoS2. This work presents rapid and one pot exfoliation of MoS2 and simultaneous reduction of GO that can facilitate the production of 2D hybrid materials.

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Zhou, Jing, Han Xiao, Bowen Zhou, Feifan Huang, Shoubin Zhou, Wei Xiao, and Dihua Wang. "Hierarchical MoS2–rGO nanosheets with high MoS2 loading with enhanced electro-catalytic performance." Applied Surface Science 358 (December 2015): 152–58. http://dx.doi.org/10.1016/j.apsusc.2015.07.187.

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Li, Xian, Jing Wang, Dan Xie, Jianlong Xu, Yi Xia, Weiwei Li, Lan Xiang, Zhemin Li, Shiwei Xu, and Sridhar Komarneni. "Flexible room-temperature formaldehyde sensors based on rGO film and rGo/MoS2 hybrid film." Nanotechnology 28, no. 32 (July 18, 2017): 325501. http://dx.doi.org/10.1088/1361-6528/aa79e6.

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Patil, D. R., K. M. Sarode, D. M. Nerkar, U. D. Patil, S. G. Bachhav, Ulhas S. Sonawane, and Neetu Paliwal. "Sonocatalytic Degradation of Methylene Blue by MoS2-RGO Nanocomposites." Russian Journal of Physical Chemistry A 95, no. 12 (December 2021): 2530–37. http://dx.doi.org/10.1134/s0036024421120153.

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Selvamani, P. Stephen, J. Judith Vijaya, L. John Kennedy, B. Saravanakumar, and M. Bououdina. "High-performance supercapacitor based on Cu2O/MoS2/rGO nanocomposite." Materials Letters 275 (September 2020): 128095. http://dx.doi.org/10.1016/j.matlet.2020.128095.

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Che, Zongzhou, Yafeng Li, Kaixiang Chen, and Mingdeng Wei. "Hierarchical MoS2@RGO nanosheets for high performance sodium storage." Journal of Power Sources 331 (November 2016): 50–57. http://dx.doi.org/10.1016/j.jpowsour.2016.08.139.

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Sun, Qian, Hui Miao, Xiaoyun Hu, Guowei Zhang, Dekai Zhang, Enzhou Liu, Yuanyuan Hao, Xixi Liu, and Jun Fan. "Preparation of MoS2/RGO nano heterojunction and photoelectric property." Journal of Materials Science: Materials in Electronics 27, no. 5 (January 22, 2016): 4665–71. http://dx.doi.org/10.1007/s10854-016-4345-4.

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Zardkhoshoui, Akbar Mohammadi, and Saied Saeed Hosseiny Davarani. "Flexible asymmetric supercapacitors based on CuO@MnO2-rGO and MoS2-rGO with ultrahigh energy density." Journal of Electroanalytical Chemistry 827 (October 2018): 221–29. http://dx.doi.org/10.1016/j.jelechem.2018.08.023.

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Wu, Zhikang, Feifei Li, Xiya Li, Yang Yang, Xiao Huang, and Hai Li. "Direct Synthesis of MoS2 Nanosheets in Reduced Graphene Oxide Nanoscroll for Enhanced Photodetection." Nanomaterials 12, no. 9 (May 6, 2022): 1581. http://dx.doi.org/10.3390/nano12091581.

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Due to their unique tubular and spiral structure, graphene and graphene oxide nanoscrolls (GONS) have shown extensive applications in various fields. However, it is still a challenge to improve the optoelectronic application of graphene and GONS because of the zero bandgap of graphene. Herein, ammonium tetrathiomolybdate ((NH4)2MoS4) was firstly wrapped into the ((NH4)2MoS4@GONS) by molecular combing the mixture of (NH4)2MoS4 and GO solution on hydrophobic substrate. After thermal annealing, the (NH4)2MoS4 and GO were converted to MoS2 nanosheets and reduced GO (RGO) simultaneously, and, thus, the MoS2@RGONS was obtained. Raman spectroscopy and high-resolution transmission electron microscopy were used to confirm the formation of MoS2 nanosheets among the RGONS. The amount of MoS2 wrapped in RGONS increased with the increasing height of GONS, which is confirmed by the atomic force microscopy and Raman spectroscopy. The as-prepared MoS2@RGONS showed much better photoresponse than the RGONS under visible light. The photocurrent-to-dark current ratios of photodetectors based on MoS2@RGONS are ~570, 360 and 140 under blue, red and green lasers, respectively, which are 81, 144 and 35 times of the photodetectors based on RGONS. Moreover, the MoS2@RGONS-based photodetector exhibited good power-dependent photoresponse. Our work indicates that the MoS2@RGONS is expected to be a promising material in the fields of optoelectronic devices and flexible electronics.

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Kumar, Sriram, Prasanta Kumar Sahoo, and Ashis Kumar Satpati. "Electrochemical and SECM Investigation of MoS2/GO and MoS2/rGO Nanocomposite Materials for HER Electrocatalysis." ACS Omega 2, no. 11 (November 2, 2017): 7532–45. http://dx.doi.org/10.1021/acsomega.7b00678.

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Zhang, Kui, Mingquan Ye, Aijun Han, and Jiling Yang. "Preparation, characterization and microwave absorbing properties of MoS2 and MoS2 -reduced graphene oxide (RGO) composites." Journal of Solid State Chemistry 277 (September 2019): 68–76. http://dx.doi.org/10.1016/j.jssc.2019.05.046.

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Huaning, Jiang, Wang Huaizhang, and Liang Ting. "Research Progress of MoS2 Composite rGO Material in Gas Sensor." E3S Web of Conferences 267 (2021): 02048. http://dx.doi.org/10.1051/e3sconf/202126702048.

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Since the successful preparation of single-layer graphene in 2004, two-dimensional materials have gradually become one of the research hotspots in the field of materials science. However, due to the inevitable defects of intrinsic two-dimensional materials, researchers began to explore how to obtain more excellent two-dimensional materials. In this paper, the basic properties, preparation methods and application in gas sensors of MoS2/rGO composites are reviewed. This paper has a certain reference value for the research of two-dimensional materials used in gas sensors.

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Wang, Wei, Olesya O. Kapitanova, Pugazhendi Ilanchezhiyan, Sixing Xi, Gennady N. Panin, Dejun Fu, and Tae Won Kang. "Self-assembled MoS2/rGO nanocomposites with tunable UV-IR absorption." RSC Advances 8, no. 5 (2018): 2410–17. http://dx.doi.org/10.1039/c7ra12455d.

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MoS₂/rGO layered nanocomposites synthesized by hydrothermal process exhibit a wide UV-IR absorption in the wavelength range from 280 to 973 nm, which is attractive for highly efficient multiband solar cells and advanced photonics.

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Saraf, Mohit, Kaushik Natarajan, and Shaikh M. Mobin. "Emerging Robust Heterostructure of MoS2–rGO for High-Performance Supercapacitors." ACS Applied Materials & Interfaces 10, no. 19 (April 26, 2018): 16588–95. http://dx.doi.org/10.1021/acsami.8b04540.

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Journal articles on the topic 'MoS2-rGO'

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