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Artículos de revistas sobre el tema "Superparamagnetic Graphene"

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Autor: Grafiati
Publicado: 7 de septiembre de 2023

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1

Zhao, Dong Lin, Li Zhong Bai, Xiao Li y Dong Dong Zhang. "Preparation and Superparamagnetic Properties of Graphene/Fe3O4 Nanocomposite". Applied Mechanics and Materials 320 (mayo de 2013): 518–21. http://dx.doi.org/10.4028/www.scientific.net/amm.320.518.

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The superparamagnetic graphene/Fe3O4nanocomposite has been successfully prepared via an easy and scalable chemical precipitation method. High quality graphene sheets were prepared from natural flake graphite by oxidation, rapid expansion and ultrasonic treatment. The structure of graphene and graphene/Fe3O4nanocomposite was investigated by transmission electron microscopy, Xray diffraction and Fourier transform infrared spectroscopy. The graphene sheets possess a curled morphology consisting of a thin wrinkled paper-like structure. The graphene/Fe3O4nanocomposite exhibits a superparamagnetic behavior, its specific saturation magnetization,Msis 38.92 emu g-1.
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2

Zheng, Xinliang, Juan Feng, Yan Zong, Hui Miao, Xiaoyun Hu, Jintao Bai y Xinghua Li. "Hydrophobic graphene nanosheets decorated by monodispersed superparamagnetic Fe3O4 nanocrystals as synergistic electromagnetic wave absorbers". Journal of Materials Chemistry C 3, n.º 17 (2015): 4452–63. http://dx.doi.org/10.1039/c5tc00313j.

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Superparamagnetic Fe3O4 nanocrystals anchored on hydrophobic graphene nanosheets are prepared and are shown to act as synergistic electromagnetic wave absorbers with good stability.
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3

Liu, Ru, Qingshan Zhao, Yang Li, Guoliang Zhang, Fengbao Zhang y Xiaobin Fan. "Graphene Supported Pt/Ni Nanoparticles as Magnetically Separable Nanocatalysts". Journal of Nanomaterials 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/602602.

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Efficient recovery of nanocatalysts, especially the graphene supported noble metal catalysts, is a challenge. In this study, we report a simple one-step route to prepare the graphene supported Pt/Ni nanocatalysts with ideal superparamagnetic properties. We demonstrated that they had excellent catalytic activities in the catalytic reduction of aromatic nitro compounds and could be easily separated from the reaction mixtures by applying an external magnetic field.
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4

Liu, Rui, Jing-Fu Liu, Li-Qiang Zhang, Jie-Fang Sun y Gui-Bin Jiang. "Low temperature synthesized ultrathin γ-Fe2O3 nanosheets show similar adsorption behaviour for As(iii) and As(v)". Journal of Materials Chemistry A 4, n.º 20 (2016): 7606–14. http://dx.doi.org/10.1039/c6ta01217e.

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As synthesised graphene-like, superparamagnetic γ-Fe2O3 nanosheets show superior inorganic arsenic scavenging performance, demonstrating the feasibility of solving an environmental problem through material innovation, and the foreground of 2D materials in environmental improvement.
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5

Zhang, Xiaojuan, Wenbin Cai, Lingyun Hao, Suli Feng, Qing Lin y Wei Jiang. "Preparation of Fe3O4/Reduced Graphene Oxide Nanocomposites with Good Dispersibility for Delivery of Paclitaxel". Journal of Nanomaterials 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/6702890.

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The Fe3O4/reduced graphene oxide (Fe3O4/RGO) nanocomposites with good dispersibility were synthesized for targeted delivery of paclitaxel (PTX). Firstly, the superparamagnetic Fe3O4/functional GO nanocomposites were prepared via hydrothermal method in which GO sheets were modified by surfactant wrapping. The Fe3O4/RGO nanocomposites were successively prepared through the reduction of graphene oxide. The products were investigated by Fourier-transform infrared spectrum, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and vibration sample magnetometry. It was found that spherical Fe3O4 nanoparticles were uniformly anchored over the RGO matrix and the nanocomposites were superparamagnetic with saturation magnetization (Ms) of 9.39 emu/g. Then PTX was loaded onto Fe3O4/RGO nanocomposites, and the drug loading capacity was 67.9%. Cell viability experiments performed on MCF-7 demonstrated that the Fe3O4/RGO-loaded PTX (Fe3O4/RGO/PTX) showed cytotoxicity to MCF-7, whereas the Fe3O4/RGO displayed no obvious cytotoxicity. The above results indicated that Fe3O4/RGO/PTX nanocomposites had potential application in tumor-targeted chemotherapy.
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6

Tian, Zhengshan, Chunxiang Xu, Jitao Li, Gangyi Zhu, Xiaoyong Xu, Jun Dai, Zengliang Shi y Yi Lin. "Manganese ion-assisted assembly of superparamagnetic graphene oxide microbowls". Applied Physics Letters 104, n.º 12 (24 de marzo de 2014): 121602. http://dx.doi.org/10.1063/1.4870093.

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7

Li, Baojun, Huaqiang Cao, Jin Shao, Meizhen Qu y Jamie H. Warner. "Superparamagnetic Fe3O4 nanocrystals@graphene composites for energy storage devices". Journal of Materials Chemistry 21, n.º 13 (2011): 5069. http://dx.doi.org/10.1039/c0jm03717f.

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8

Chuanyu, Sun y Wang Yu. "Synthesis and characterization of graphene oxide composite with Fe3O4". Materials Science-Poland 33, n.º 3 (1 de septiembre de 2015): 488–90. http://dx.doi.org/10.1515/msp-2015-0068.

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Abstract In the paper, a magnetic composite of graphene oxide (MGO) has been successfully synthesized through decomposition of iron (III) acetylacetonate in the mixture solution of triethylene glycol and graphene oxide (GO). Atomic force microscopy (AFM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and superconducting quantum interference device were used to characterize the material. The results show that the magnetic Fe3O4 nanoparticles modified graphene oxide composite with superparamagnetic properties, and magnetization saturation of 16.4 emu/g has been obtained. The MGO has a good sustained-release performance, and in vitro cytotoxicity confirming its secure use as a potential drug carrier.
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9

Li, Cheng, Dong Lin Zhao, Fei Fei Sun, Xia Jun Wang y Ran Ran Yao. "Inductive Heating Property of Superparamagnetic Graphene Nanosheets-Fe3O4 Nanoparticles Hybrid in an AC Magnetic Field for Localized Hyperthermia". Key Engineering Materials 727 (enero de 2017): 347–52. http://dx.doi.org/10.4028/www.scientific.net/kem.727.347.

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The superparamagnetic graphene nanosheets–Fe3O4 nanoparticles (GNs–Fe3O4) hybrid has been successfully prepared via an easy and scalable chemical precipitation method. The inductive heat property of GNs–Fe3O4 hybrid in an alternating current (AC) magnetic field was investigated. The potential of GNs–Fe3O4 hybrid was evaluated for localized hyperthermia treatment of cancers. The GNs–Fe3O4 hybrid exhibits a superparamagnetic behavior, its specific saturation magnetization, Ms is 66.963 emu g-1. After exposed in the AC magnetic field for 1140 sec, the temperature of physiological saline suspension containing GNS–Fe3O4 hybrid were 81 oC. The GNs–Fe3O4 hybrid will be useful as good thermoseeds for localized hyperthermia treatment of cancers.
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10

Mikhnavets, L. A., A. N. Tkach, U. S. Fiadosenka y D. V. Radziuk. "Effect of ultrasound on nonsteroidal anti-inflammatory drugs complexed with copper, iron, zinc and graphene oxides". Doklady BGUIR 18, n.º 8 (27 de diciembre de 2020): 69–76. http://dx.doi.org/10.35596/1729-7648-2020-18-8-69-76.

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This work aims at the formation of nanocomposites based on graphene and metal oxides (copper-iron, zinc and iron) through ultrasonic interaction (20 kHz) and investigation of their electromagnetic properties by scanning electron microscopy, Raman and absorption spectroscopy, and fluorescence methods. The output of this work implies the development of a single-step ultrasound method to form functional Cu/Fe-, ZnO-and Fe3O4-polyvinyl alcohol nanocomposites, and the ultrasonic conjugation of these nanocomposites with pristine drugs, such as ketorolac and acetylsalicylic acid. We established that formed Cu/Fe-graphene-ketorolac, ZnO-grapheneacetylsalicylic acid and Fe3O4-ketorolac obtain optical and superparamagnetic properties of nanoparticles with improved electromagnetic characteristics due to ultrasonic conjugation. Cu/Fe-graphene-ketorolac nanocomposites are revealed to have a spherical shape (< 100 nm) and acquire improved optoelectronic properties due to copper and iron atoms in the matrix of graphene. It is demonstrated that ZnO-graphene-acetylsalicylic acid nanocomposites obtain properties of fluorescence mainly for electromagnetic interaction with the ZnO phase formed on the surface of graphene. Ultrasonic conjugation of ketorolac with magnetite proved to increase the electron density of Fe3O4-ketorolac that obtains superparamagnetic properties, and its biocompatibility can be improved when coated with polyvinyl alcohol. In general, formed nanocomposites are of great interest in medical electronics and nanomedicine as functional materials with electromagnetic properties being controlled at the molecular and atomic levels. Such nanocomposites can also find application as components in electronic devices for diagnosis and treatment of serious inflammatory disorders. Industries will find the singlestep ultrasound method of special interest because it is eco-friendly and can be scaled up by a versatile spectrum of inorganic and organic materials and drugs.
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11

Rodrigues, Raquel, Giovanni Baldi, Saer Doumett, Juan Gallo, Manuel Bañobre-López, Goran Dražić, Ricardo Calhelha et al. "A Tailor-Made Protocol to Synthesize Yolk-Shell Graphene-Based Magnetic Nanoparticles for Nanomedicine". C 4, n.º 4 (13 de octubre de 2018): 55. http://dx.doi.org/10.3390/c4040055.

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A simple tailor-made protocol to synthesize graphene-based magnetic nanoparticles (GbMNPs) for nanomedicine is herein reported. Different GbMNPs with very distinctive physicochemical and toxicological properties were synthesized by adjusting the number of carbon precursors in the coating of superparamagnetic iron oxide nanoparticles. In vitro tests show the ability to use these GbMNPs as intelligent and on-demand drug nanocarrier systems for drug delivery, exhibiting the following features: good colloidal stability, good loading capacity of the chemotherapeutic drug doxorubicin, high pH-controlled release of the encapsulated drug (targeting tumour acidic pH conditions), superparamagnetic behaviour and biocompatibility. Due to their combined properties (i.e., physicochemical, magnetic, and biocompatibility), GbMNPs show high potentiality to be combined with other biomedical techniques, such as magnetic hyperthermia, which can represent an enhancement in the treatment of cancer.
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12

Gao, Min, Xiaowen Han, Wenjing Liu, Ziao Tian, Yongfeng Mei, Miao Zhang, Paul K. Chu et al. "Graphene-mediated ferromagnetic coupling in the nickel nano-islands/graphene hybrid". Science Advances 7, n.º 30 (julio de 2021): eabg7054. http://dx.doi.org/10.1126/sciadv.abg7054.

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Nanoscale magnetic structures are fundamental to the design and fabrication of spintronic devices and have exhibited tremendous potential superior to the conventional semiconductor devices. However, most of the magnetic moments in nanostructures are unstable due to size effect, and the possible solution based on exchange coupling between nanomagnetism is still not clear. Here, graphene-mediated exchange coupling between nanomagnets is demonstrated by depositing discrete superparamagnetic Ni nano-islands on single-crystal graphene. The heterostructure exhibits ideal two-dimensional (2D) ferromagnetism with clear hysteresis loops and Curie temperature up to 80 K. The intrinsic ferromagnetism in graphene and antiferromagnetic exchange coupling between graphene and Ni nano-islands are revealed by x-ray magnetic circular dichroism and density functional theory calculations. The artificial 2D ferromagnets constitute a platform to study the coupling mechanism between complex correlated electronic systems and magnetism on the nanoscale, and the results and concept provide insights into the realization of spin manipulation in quantum computing.
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13

Yadav, Raghvendra Singh, Anju, Thaiskang Jamatia, Ivo Kuřitka, Jarmila Vilčáková, David Škoda, Pavel Urbánek et al. "Superparamagnetic ZnFe2O4 Nanoparticles-Reduced Graphene Oxide-Polyurethane Resin Based Nanocomposites for Electromagnetic Interference Shielding Application". Nanomaterials 11, n.º 5 (25 de abril de 2021): 1112. http://dx.doi.org/10.3390/nano11051112.

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Superparamagnetic ZnFe2O4 spinel ferrite nanoparticles were prepared by the sonochemical synthesis method at different ultra-sonication times of 25 min (ZS25), 50 min (ZS50), and 100 min (ZS100). The structural properties of ZnFe2O4 spinel ferrite nanoparticles were controlled via sonochemical synthesis time. The average crystallite size increases from 3.0 nm to 4.0 nm with a rise of sonication time from 25 min to 100 min. The change of physical properties of ZnFe2O4 nanoparticles with the increase of sonication time was observed. The prepared ZnFe2O4 nanoparticles show superparamagnetic behavior. The prepared ZnFe2O4 nanoparticles (ZS25, ZS50, and ZS100) and reduced graphene oxide (RGO) were embedded in a polyurethane resin (PUR) matrix as a shield against electromagnetic pollution. The ultra-sonication method has been used for the preparation of nanocomposites. The total shielding effectiveness (SET) value for the prepared nanocomposites was studied at a thickness of 1 mm in the range of 8.2–12.4 GHz. The high attenuation constant (α) value of the prepared ZS100-RGO-PUR nanocomposite as compared with other samples recommended high absorption of electromagnetic waves. The existence of electric-magnetic nanofillers in the resin matrix delivered the inclusive acts of magnetic loss, dielectric loss, appropriate attenuation constant, and effective impedance matching. The synergistic effect of ZnFe2O4 and RGO in the PUR matrix led to high interfacial polarization and, consequently, significant absorption of the electromagnetic waves. The outcomes and methods also assure an inventive and competent approach to develop lightweight and flexible polyurethane resin matrix-based nanocomposites, consisting of superparamagnetic zinc ferrite nanoparticles and reduced graphene oxide as a shield against electromagnetic pollution.
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14

Singh, Pardeep, Sourav Gautam, Pooja Shandilya, Bhanu Priya, Virender P. Singh y Pankaj Raizada. "Graphene bentonite supported ZnFe2O4 as superparamagnetic photocatalyst for antibiotic degradation". Advanced Materials Letters 8, n.º 3 (26 de junio de 2017): 229–38. http://dx.doi.org/10.5185/amlett.2017.1467.

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15

Meidanchi, Alireza y Omid Akhavan. "Superparamagnetic zinc ferrite spinel–graphene nanostructures for fast wastewater purification". Carbon 69 (abril de 2014): 230–38. http://dx.doi.org/10.1016/j.carbon.2013.12.019.

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16

Sahraei, Razieh, Khadijeh Hemmati y Mousa Ghaemy. "Adsorptive removal of toxic metals and cationic dyes by magnetic adsorbent based on functionalized graphene oxide from water". RSC Advances 6, n.º 76 (2016): 72487–99. http://dx.doi.org/10.1039/c6ra12934j.

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17

Abo-Zahhad, E. M., Ahmed H. El-Shazly y M. F. El-Kady. "Synthesis and Characterization of Nanomagnetic Graphene via Co-Precipitation Technique with Aid of Ultrasound". Materials Science Forum 860 (julio de 2016): 21–24. http://dx.doi.org/10.4028/www.scientific.net/msf.860.21.

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Graphene nanoplates (GNPs) was immobilized with nanomagnetite using co-precipitation technique with the aid of ultrasound for the production of magnetic graphene nanoplate composite Fe3O4/G (MGNC) production. The physico-chemical properties of graphene were compared with the fabricated magnetic graphene composite using different characterization techniques. The crystalline and chemical structures of nanographene before and after magnetic immobilization were identified using X-Ray diffraction. The morphological structure of magnetic composite was identified by using Transmission Electron Microscope (TEM).it was carried out to investigate the precipitation of nanomagnetite onto the nanographene sheets. Atomic Force Microscope (AFM) analysis of magnetic graphene composites confirms the presence of magnetic nanoparticles attached to nanographene. The Vibrating sample magnetometer (VSM) confirmed the superparamagnetic properties of the prepared composite that represented with its hysteresis curve, and the saturation moment per unit mass, Ms for the MGNCs is 22.7548 emu·g−1
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18

Fatima, Maryam, Ayesha Sohail, Khush Bakhat Akram, Lubna Sherin, Saad Ihsan Butt, M. Abid y O. Anwar Bég. "BIOMECHANICS OF SUPERPARAMAGNETIC NANOPARTICLES FOR LASER HYPERTHERMIA". Biomedical Engineering: Applications, Basis and Communications 32, n.º 01 (febrero de 2020): 2050007. http://dx.doi.org/10.4015/s1016237220500076.

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Nanoparticle hyperthermia treatment is progressing with the passage of time, and with the development in the field of hybrid nanoparticles synthesis. The transient heat transfer in magnetite–graphene nanocomposite in three dimension under conduction is studied during this research. The proposed model is simulated in finite element solver framework. Novel hybrid nanoparticles were synthesized. Their chemical properties and their heat transfer properties were examined. By mathematical modeling results, the effective hybrid nanoparticle is chosen that can be used as a drug in hyperthermia process. Current developments in nanotechnology have improved the ability to precisely modify the features and properties of MNPs for these biomedical applications. The accurate control on the magnetic properties of the particle is the key in hyperthermia applications. By these magnetic particles, wished temperature can be achieved for laser hyperthermia. In this paper, study is done for understanding the properties and novelty of the new nanoparticles. The merits and demerits of synthesized hybrid nanoparticles are also discussed either the composites can used as a drug or not.
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19

Yang, Xiaoying, Xiaoyan Zhang, Yanfeng Ma, Yi Huang, Yinsong Wang y Yongsheng Chen. "Superparamagnetic graphene oxide–Fe3O4 nanoparticles hybrid for controlled targeted drug carriers". Journal of Materials Chemistry 19, n.º 18 (2009): 2710. http://dx.doi.org/10.1039/b821416f.

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20

Wang, Wei, Yatang Dai, Huan Zhang, Hongmei Luo y Yulei Chen. "Preparation and Characterization of Superparamagnetic Iron Oxide Nanoparticle-Graphene Oxide Nanocomposites". Journal of Nanoscience and Nanotechnology 16, n.º 7 (1 de julio de 2016): 7159–63. http://dx.doi.org/10.1166/jnn.2016.11394.

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21

Wang, Jinfeng, Bin Tang, Takuya Tsuzuki, Qingtao Liu, Xueliang Hou y Lu Sun. "Synthesis, characterization and adsorption properties of superparamagnetic polystyrene/Fe3O4/graphene oxide". Chemical Engineering Journal 204-206 (septiembre de 2012): 258–63. http://dx.doi.org/10.1016/j.cej.2012.07.087.

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22

Wang, Guangshuo, Shu Yang, Zhiyong Wei, Xufeng Dong, Hong Wang y Min Qi. "Facile preparation of poly(ε-caprolactone)/Fe3O4@graphene oxide superparamagnetic nanocomposites". Polymer Bulletin 70, n.º 8 (9 de marzo de 2013): 2359–71. http://dx.doi.org/10.1007/s00289-013-0957-5.

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23

Peng, Jing, Yuqiao Guo, Haifeng Lv, Xinyu Dou, Qi Chen, Jiyin Zhao, Changzheng Wu et al. "Superparamagnetic Reduced Graphene Oxide with Large Magnetoresistance: A Surface Modulation Strategy". Angewandte Chemie International Edition 55, n.º 9 (28 de enero de 2016): 3176–80. http://dx.doi.org/10.1002/anie.201511436.

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24

Peng, Jing, Yuqiao Guo, Haifeng Lv, Xinyu Dou, Qi Chen, Jiyin Zhao, Changzheng Wu et al. "Superparamagnetic Reduced Graphene Oxide with Large Magnetoresistance: A Surface Modulation Strategy". Angewandte Chemie 128, n.º 9 (28 de enero de 2016): 3228–32. http://dx.doi.org/10.1002/ange.201511436.

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25

Sathyan, Meera, M. K. Jayaraj y Honey John. "Rolling and unrolling of graphene sheets via in situ generation of superparamagnetic iron oxide nanoparticles". Physical Chemistry Chemical Physics 21, n.º 30 (2019): 16413–17. http://dx.doi.org/10.1039/c9cp01507h.

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26

Zhang, Dafeng, Qi Ding, Xipeng Pu, Changhua Su, Xin Shao, Guqiao Ding, Zheng Gang Zhang y Qiannan Fang. "One-step combustion synthesis of NiFe2O4-reduced graphene oxide hybrid materials for photodegradation of methylene blue". Functional Materials Letters 07, n.º 01 (febrero de 2014): 1350065. http://dx.doi.org/10.1142/s1793604713500653.

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NiFe 2 O 4-reduced graphene oxide (RGO) hybrid materials (NFRGs) were synthesized by a simple one-step combustion method. The structures, morphologies and magnetic properties were characterized by X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, and vibrating sample magnetometer analysis. The results show that graphene oxide sheets are not oxidized, but reduced to RGO. The superparamagnetic behavior of NFRGs was observed. The as-synthesized magnetically separable NFRGs show improved photodegradation performance when compared to neat NiFe 2 O 4, attributed to the narrowing band gap, the efficient transfer of photo-generated electron from NiFe 2 O 4 to RGO sheets, and the improved adsorptive property of photocatalyst due to the high specific surface area of RGO sheets.
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27

Yang, Jung Hee, B. Ramaraj y Kuk Ro Yoon. "Preparation and characterization of superparamagnetic graphene oxide nanohybrids anchored with Fe3O4 nanoparticles". Journal of Alloys and Compounds 583 (enero de 2014): 128–33. http://dx.doi.org/10.1016/j.jallcom.2013.08.152.

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28

Llenas, Marina, Stefania Sandoval, Pedro M. Costa, Judith Oró-Solé, Silvia Lope-Piedrafita, Belén Ballesteros, Khuloud T. Al-Jamal y Gerard Tobias. "Microwave-Assisted Synthesis of SPION-Reduced Graphene Oxide Hybrids for Magnetic Resonance Imaging (MRI)". Nanomaterials 9, n.º 10 (24 de septiembre de 2019): 1364. http://dx.doi.org/10.3390/nano9101364.

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Magnetic resonance imaging (MRI) is a useful tool for disease diagnosis and treatment monitoring. Superparamagnetic iron oxide nanoparticles (SPION) show good performance as transverse relaxation (T2) contrast agents, thus facilitating the interpretation of the acquired images. Attachment of SPION onto nanocarriers prevents their agglomeration, improving the circulation time and efficiency. Graphene derivatives, such as graphene oxide (GO) and reduced graphene oxide (RGO), are appealing nanocarriers since they have both high surface area and functional moieties that make them ideal substrates for the attachment of nanoparticles. We have employed a fast, simple and environmentally friendly microwave-assisted approach for the synthesis of SPION-RGO hybrids. Different iron precursor/GO ratios were used leading to SPION, with a median diameter of 7.1 nm, homogeneously distributed along the RGO surface. Good relaxivity (r2*) values were obtained in MRI studies and no significant toxicity was detected within in vitro tests following GL261 glioma and J774 macrophage-like cells for 24 h with SPION-RGO, demonstrating the applicability of the hybrids as T2-weighted MRI contrast agents.
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29

Gurbani, Neeta, Chih-Pin Han, Kazuhiro Marumoto, Ru-Shi Liu, Ram Janay Choudhary y Neelu Chouhan. "Biogenic Reduction of Graphene Oxide: An Efficient Superparamagnetic Material for Photocatalytic Hydrogen Production". ACS Applied Energy Materials 1, n.º 11 (3 de octubre de 2018): 5907–18. http://dx.doi.org/10.1021/acsaem.8b00552.

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30

Hao, Dong, Chi Xuefen, Qu Liangdong y Zhao Xiaohui. "Fabrication, Characterization and Properties of Superparamagnetic Reduced Graphene Oxide/Fe3O4 Hollow Sphere Nanocomposites". Rare Metal Materials and Engineering 45, n.º 7 (julio de 2016): 1669–73. http://dx.doi.org/10.1016/s1875-5372(16)30137-0.

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31

Mehnati-Najafabadi, Vajihe, Asghar Taheri-Kafrani, Abdol-Khalegh Bordbar y Akram Eidi. "Covalent immobilization of xylanase from Thermomyces lanuginosus on aminated superparamagnetic graphene oxide nanocomposite". Journal of the Iranian Chemical Society 16, n.º 1 (3 de septiembre de 2018): 21–31. http://dx.doi.org/10.1007/s13738-018-1477-x.

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32

Ambikeswari, N. y S. Manivannan. "Superior magnetodielectric properties of room temperature synthesized superparamagnetic cobalt ferrite – graphene oxide composite". Journal of Alloys and Compounds 763 (septiembre de 2018): 711–18. http://dx.doi.org/10.1016/j.jallcom.2018.05.275.

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33

Ren, Lulu, Shu Huang, Wei Fan y Tianxi Liu. "One-step preparation of hierarchical superparamagnetic iron oxide/graphene composites via hydrothermal method". Applied Surface Science 258, n.º 3 (noviembre de 2011): 1132–38. http://dx.doi.org/10.1016/j.apsusc.2011.09.049.

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34

Talebi, Fatemeh y Zahra Rafiee. "Superparamagnetic nanocomposites: prepared by embedding Fe3O4@graphene oxide in chiral poly(amide–imide)". Polymer Bulletin 77, n.º 4 (20 de junio de 2019): 2059–71. http://dx.doi.org/10.1007/s00289-019-02859-z.

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35

Islam, Md Nazmul, Lena Gorgannezhad, Mostafa Kamal Masud, Shunsuke Tanaka, Md Shahriar A. Hossain, Yusuke Yamauchi, Nam-Trung Nguyen y Muhammad J. A. Shiddiky. "Graphene-Oxide-Loaded Superparamagnetic Iron Oxide Nanoparticles for Ultrasensitive Electrocatalytic Detection of MicroRNA". ChemElectroChem 5, n.º 17 (27 de junio de 2018): 2488–95. http://dx.doi.org/10.1002/celc.201800339.

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36

Radhakrishnan, Sruthi, Parambath M. Sudeep, Jun Hyoung Park, Cristiano F. Woellner, Kierstein Maladonado, Douglas S. Galvao, Benny Abraham Kaipparettu, Chandra Sekhar Tiwary y Pulickel M. Ajayan. "Multifunctional Hybrids Based on 2D Fluorinated Graphene Oxide and Superparamagnetic Iron Oxide Nanoparticles". Particle & Particle Systems Characterization 34, n.º 11 (23 de octubre de 2017): 1700245. http://dx.doi.org/10.1002/ppsc.201700245.

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37

Guskos, Niko, Grzegorz Zolnierkiewicz, Aleksander Guskos, Konstantinos Aidinis, Spiros Glenis, Agnieszka Wanag, Ewelina Kusiak-Nejman, Urszula Narkiewicz y Antoni W. Morawski. "DC magnetization of titania supported on reduced graphene oxide flakes". REVIEWS ON ADVANCED MATERIALS SCIENCE 60, n.º 1 (1 de enero de 2021): 794–800. http://dx.doi.org/10.1515/rams-2021-0059.

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Abstract DC magnetization of a series of titania nanocomposites modified with reduced graphene oxide (rGO) has been investigated. Hysteresis loops observed at room temperature disappeared at low temperatures. At a temperature of about 100 K, a phase transition to the superferromagnetic order state was observed, probably due to the linear expansion and self-reorientation of the magnetic moments. Processes associated with magnetic moment reorientation can cause a hysteresis loop to disappear at low temperatures as well as superferromagnetic ordering. It was suggested that the isolated nanoparticle in the nanopore could be used to create a “compass” at a nanometer-sized level that would be many times more sensitive than the conventional one. Measurements of the zero-field cooling and field cooling modes do not exclude the possibility of the coexistence of a superparamagnetic state.
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38

Li, Xinghua, Juan Feng, Hao Zhu, Chunhao Qu, Jintao Bai y Xinliang Zheng. "Sandwich-like graphene nanosheets decorated with superparamagnetic CoFe2O4 nanocrystals and their application as an enhanced electromagnetic wave absorber". RSC Adv. 4, n.º 63 (2014): 33619–25. http://dx.doi.org/10.1039/c4ra06732k.

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39

Tran, Quang Dat. "SYNTHESIS OF REDUCED GRAPHENE OXIDE - Cu0.5Ni0.5Fe2O4 - PRUSSIAN BLUE NANOCOMPOSITE MATERIALS FOR CESIUM ADSORPTION FROM AQUEOUS SOLUTION". Journal of Science and Technique 14 (26 de abril de 2021): 5–13. http://dx.doi.org/10.56651/lqdtu.jst.v14.n05.221.

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Adsorbents composed of reduced graphene oxide, Cu0.5Ni0.5Fe2O4 ferrite and prussian blue (RGO-CNF-PB nanocomposites) were fabricated for the adsorption of cesium and rapid magnetic separation of absorbent from contaminated water. The morphology, structure and magnetic properties of samples were characterized by SEM, XRD, FTIR, VSM. The effect of pH, contact time and adsorption isotherms were conducted in batch experiments. It was found that reduced graphene oxide was exfoliated and decorated homogeneously with ferrite nanoparticles. Cu0.5Ni0.5Fe2O4 has the average particle diameter of about 15 nm and prussian blue has been covered smoothly onto RGO-CNF surfaces. The remanences (Mr) and coercive forces (Hc) are near to zero, indicating that obtained material is superparamagnetic. The adsorption of cesium could be suitably described by the pseudosecond- order and the Langmuir models. The highest adsorption capacity of the composites for cesium was evaluated to be 125 mg/g at pH = 7 and 25°C.
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40

Hardiansyah, Andri, Ming-Chien Yang, Hung-Liang Liao, Yu-Wei Cheng, Fredina Destyorini, Yuyun Irmawati, Chi-Ming Liu, Ming-Chi Yung, Chuan-Chih Hsu y Ting-Yu Liu. "Magnetic Graphene-Based Sheets for Bacteria Capture and Destruction Using a High-Frequency Magnetic Field". Nanomaterials 10, n.º 4 (3 de abril de 2020): 674. http://dx.doi.org/10.3390/nano10040674.

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Magnetic reduced graphene oxide (MRGO) sheets were prepared by embedding Fe3O4 nanoparticles on polyvinylpyrrolidone (PVP) and poly(diallyldimethylammonium chloride) (PDDA)-modified graphene oxide (GO) sheets for bacteria capture and destruction under a high-frequency magnetic field (HFMF). The characteristics of MRGO sheets were evaluated systematically by transmission electron microscopy (TEM), scanning electron microscopy (SEM), zeta potential measurement, X-ray diffraction (XRD), vibrating sample magnetometry (VSM), and X-ray photoelectron spectroscopy (XPS). TEM observation revealed that magnetic nanoparticles (8–10 nm) were dispersed on MRGO sheets. VSM measurements confirmed the superparamagnetic characteristics of the MRGO sheets. Under HFMF exposure, the temperature of MRGO sheets increased from 25 to 42 °C. Furthermore, we investigated the capability of MRGO sheets to capture and destroy bacteria (Staphylococcus aureus). The results show that MRGO sheets could capture bacteria and kill them through an HFMF, showing a great potential in magnetic separation and antibacterial application.
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41

Du, Hang, Zhen Wang, Yinghao Chen, Yanyan Liu, Yushan Liu, Baojun Li, Xiangyu Wang y Huaqiang Cao. "Anchoring superparamagnetic core–shells onto reduced graphene oxide: fabrication of Ni–carbon–rGO nanocomposite for effective adsorption and separation". RSC Advances 5, n.º 13 (2015): 10033–39. http://dx.doi.org/10.1039/c4ra14651d.

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The magnetic Ni nanoparticles encapsulated in carbon shells were anchored on to reduced graphene oxide. The excellent removal ability of organic dyes and enhanced separation efficiency make NGC a useful candidate for waste water treatment.
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42

Dramou, Pierre, Fangqi Wang, Yiyang Sun, Jingjing Zhang, Ping Yang, Donghao Liu y Hua He. "Synthesis and characterization of superparamagnetic graphene oxide assembled halloysite composites for extraction of rutin". Applied Clay Science 217 (febrero de 2022): 106397. http://dx.doi.org/10.1016/j.clay.2021.106397.

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43

Chang, Qing, Guodong Jiang, Heqing Tang, Na Li, Jia Huang y Laiyan Wu. "Enzymatic removal of chlorophenols using horseradish peroxidase immobilized on superparamagnetic Fe3O4/graphene oxide nanocomposite". Chinese Journal of Catalysis 36, n.º 7 (julio de 2015): 961–68. http://dx.doi.org/10.1016/s1872-2067(15)60856-7.

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44

Lin, Yu-Jung, Wen-Zhi Cao, Tong Ouyang, Bor-Yann Chen y Chang-Tang Chang. "Developing sustainable graphene-doped titanium nano tube coated to superparamagnetic nanoparticles for arsenic recovery". Journal of the Taiwan Institute of Chemical Engineers 70 (enero de 2017): 311–18. http://dx.doi.org/10.1016/j.jtice.2016.10.020.

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45

Wang, Yan, Wenzhi Zhang, Chunyan Luo, Xinming Wu y Gang Yan. "Superparamagnetic FeCo@SnO2 nanoparticles on graphene-polyaniline: Synthesis and enhanced electromagnetic wave absorption properties". Ceramics International 42, n.º 10 (agosto de 2016): 12496–502. http://dx.doi.org/10.1016/j.ceramint.2016.05.038.

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46

Liu, Panbo, Ying Huang y Xiang Zhang. "Superparamagnetic Fe3O4 nanoparticles on graphene–polyaniline: Synthesis, characterization and their excellent electromagnetic absorption properties". Journal of Alloys and Compounds 596 (mayo de 2014): 25–31. http://dx.doi.org/10.1016/j.jallcom.2014.01.188.

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47

Ma, Yingxia, Pengsheng Jin, Wenjuan Lei, Peiqing La, Xueyan Du y Dingjun Zhang. "One-pot method fabrication of superparamagnetic sulfonated polystyrene/Fe3O4/graphene oxide micro-nano composites". Journal of Porous Materials 25, n.º 5 (17 de enero de 2018): 1447–53. http://dx.doi.org/10.1007/s10934-018-0557-8.

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48

Dat, Tran Quang. "ADSORPTION OF URANIUM FROM AQUEOUS SOLUTION BY Cu0.5Ni0.5Fe2O4 – REDUCED GRAPHENE OXIDE NANOCOMPOSITES". Vietnam Journal of Science and Technology 54, n.º 5A (22 de marzo de 2018): 9. http://dx.doi.org/10.15625/2525-2518/54/5a/12056.

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Cu0.5Ni0.5Fe2O4 – reduced graphene oxide composites (CNF-rGO) as an efficient adsorbent for the adsorption of uranium (VI) have been synthesized by a two-steps methods. The structures and the physicochemical properties of adsorbents are characterized by Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectroscopy (RAMAN) and Vibrating sample magnetometer (VSM) measurement. It was found that rGO were exfoliated and decorated homogeneously with CNF nanoparticles having diameters of 20 nm. The saturated magnetization (Ms) value was estimated to be 60 emu/g, remanences (Mr) and coercive forces (Hc) near to zero, indicating that obtained material is superparamagnetic. The pH effect, contact time and adsorption isotherms were examined in batch experiments. The adsorption isotherm agreed well with the Langmuir model, having a maximum adsorption capacity of 256 mg/g, at pH = 6, T = 298 K.
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49

Ramalingam, Vaikundamoorthy, Harshavardhan Mohan y Inho Hwang. "2D structured graphene nanosheets decorated by monodispersed superparamagnetic Fe3O4 nanoparticles for differentiation of mouse cells". Journal of Alloys and Compounds 906 (junio de 2022): 164300. http://dx.doi.org/10.1016/j.jallcom.2022.164300.

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50

Liu, Yue-Wen, Meng-Xue Guan, Lan Feng, Shun-Liu Deng, Jian-Feng Bao, Su-Yuan Xie, Zhong Chen, Rong-Bin Huang y Lan-Sun Zheng. "Facile and straightforward synthesis of superparamagnetic reduced graphene oxide–Fe3O4hybrid composite by a solvothermal reaction". Nanotechnology 24, n.º 2 (10 de diciembre de 2012): 025604. http://dx.doi.org/10.1088/0957-4484/24/2/025604.

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