Bibliografías temáticas / Electronic Transport Properties -Graphene/PVA Nanocomposite

Literatura académica sobre el tema "Electronic Transport Properties -Graphene/PVA Nanocomposite"

Autor: Grafiati
Publicado: 7 de septiembre de 2023

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Artículos de revistas sobre el tema "Electronic Transport Properties -Graphene/PVA Nanocomposite"

1

Sadiq, Mohd, Mohammad Moeen Hasan Raza, Mohammad Zulfequar y Javid Ali. "Investigations on Structural, Optical Properties, Electrical Properties and Electrochemical Stability Window of the Reduced Graphene Oxides Incorporated Blend Polymer Nanocomposite Films". Journal of Nanoscience and Nanotechnology 21, n.º 6 (1 de junio de 2021): 3203–17. http://dx.doi.org/10.1166/jnn.2021.19079.

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The incorporation of reduced Graphene oxides (rGO) as a nanofiller in the blend polymer nanocomposite (BPNC) based on Polyvinylpyrrolidone (PVP)-Polyvinylalcohol (PVA) and sodium bicarbonate (NaHCO3) are presented. The blend polymer electrolytes films are prepared by the standard solution cast technique, and it is characterized to investigate the structural, morphological, thermal, optical and electrochemical property. The X-ray diffraction confirms the formation of polymer nanocomposite and is agreed with FESEM analysis. The FTIR confirms the presence of various interactions between the polymer, salt and rGO, and indicates the composite formation. The DSC examines the thermal property of the blend polymer nanocomposite electrolytes system. The bandgap energy has been obtained from the UV-spectroscopy and examines the direct and indirect gap, both offer the decreases bandgap with the addition of a higher concentration of rGO as nanofillers. The highest value of ionic conductivity of the film is obtained ~1.39×10−6 S cm−1 at 15 wt.% of rGO content in polymer blend nanocomposite (BPNC) films. For these BPNC films, the electrochemical stability window (ESW) is ~4.0 V at 25 wt.% of rGO content and ionic transport number (tion) is ~0.98, for 10 wt.% of rGO content at the room temperature. These highly stable blend polymer nanocomposite electrolyte films offer the excellent properties for utilized as a separator for solid-state devices e.g., battery, supercapacitors, electrochromic display devices and other electrochemical energy storage/ conversion devices respectively.
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2

Nam, Woo Hyun, Hyung Mo Jeong, Jong-Hyeong Lim, Jong-Min Oh, Hiesang Sohn, Won-Seon Seo, Jung Young Cho y Weon Ho Shin. "Charge Transport Behavior of Al-Doped ZnO Incorporated with Reduced Graphene Oxide Nanocomposite Thin Film". Applied Sciences 10, n.º 21 (30 de octubre de 2020): 7703. http://dx.doi.org/10.3390/app10217703.

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ZnO is utilized as a promising material for various electronic and energy areas due to its outstanding chemical stability, abundance, non-toxicity, and low cost. However, controlling electronic transport properties of ZnO by facile strategy is still necessary for wider applications. Here, we synthesized reduced graphene oxide incorporated Al-doped ZnO nanocomposite thin film prepared by the electrospray deposition method and investigated the electronic transport behavior. The electron transport in pristine Al-doped ZnO thin film is strongly affected by grain boundary scattering, but significant enhancement of carrier mobility is observed in reduced graphene oxide-incorporated Al-doped ZnO nanocomposite thin film. The results demonstrate that this hybrid strategy with graphene has an important effect on the charge transport behavior in ZnO polycrystalline materials.
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3

Behera, Tapan Kumar, Snehalata Pradhan, Priyanka Behera, Pramod Kumar Satapathy y Priyabrata Mohapatra. "A Brief Overview on Facile Synthesis and Challenging Properties of Graphene Nanocomposite: State-of-the-art". Asian Journal of Chemistry 34, n.º 7 (2022): 1603–12. http://dx.doi.org/10.14233/ajchem.2022.23648.

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This review work aims to present a brief study on the unique carbon allotrope graphene and its composite with nanoparticles. Graphene plays an important role in physics, chemistry, biotechnology, medical science, materials science and many more fields. The wide applications of graphene are based on its unique structure, exceptional physical properties, chemical tunability and dramatically electronic arrangement. The current world demands the energy conversion, digital technology and medical diagnoses in lower potential value, low cost, high reproducibility and high portability. Graphene nanocomposite possessing the above criteria and able to fulfill the worlds demand and become the most rising shining star in the horizon of material science research field. This review elaborates about historical background, structural feature, developed synthesis process, unique properties, characterizations and its different magnificent biosensor applications. In particular, the general overview study of its different fascinating properties such as mechanical, optical, magnetic, quantum hall effect, electronic transport properties and these makes graphene nanocomposite a rising tool for different biosensor applications.
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4

Gao, Chenhao, Keyi Zhong, Xuan Fang, Dan Fang, Hongbin Zhao, Dengkui Wang, Bobo Li et al. "Brief Review of Photocatalysis and Photoresponse Properties of ZnO–Graphene Nanocomposites". Energies 14, n.º 19 (7 de octubre de 2021): 6403. http://dx.doi.org/10.3390/en14196403.

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As a typical wide bandgap semiconductor, ZnO has received a great deal of attention from researchers because of its strong physicochemical characteristics. During the past few years, great progress has been made in the optoelectronic applications of ZnO, particularly in the photocatalysis and photodetection fields. To enable further improvements in the material’s optoelectronic performance, construction of a variety of ZnO-based composite structures will be essential. In this paper, we review recent progress in the growth of different ZnO–graphene nanocomposite structures. The related band structures and photocatalysis and photoresponse properties of these nanocomposites are discussed. Additionally, specific examples of the materials are included to provide an insight into the common general physical properties and carrier transport characteristics involved in these unique nanocomposite structures. Finally, further directions for the development of ZnO–graphene nanocomposite materials are forecasted.
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5

Nag, Sananda, Mickaël Castro, Veena Choudhary y Jean-Francois Feller. "Boosting Selectivity and Sensitivity to Biomarkers of Quantum Resistive Vapour Sensors Used for Volatolomics with Nanoarchitectured Carbon Nanotubes or Graphene Platelets Connected by Fullerene Junctions". Chemosensors 9, n.º 4 (28 de marzo de 2021): 66. http://dx.doi.org/10.3390/chemosensors9040066.

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Nanocarbon-based vapour sensors are increasingly used to make anticipated diagnosis of diseases by the analysis of volatile organic compound (VOC) biomarkers from the breath, i.e., volatolomics. However, given the tiny number of molecules to detect, usually only tens of parts per billion (ppb), increasing the sensitivity of polymer nanocomposite chemoresistive transducers is still a challenge. As the ability of these nanosensors to convert the interactions with chemical compounds into changes of resistance, depends on the variations of electronic transport through the percolated network of the conducting nanofillers, it is a key parameter to control. Actually, in this conducting architecture, the bottlenecks for electrons’ circulation are the interparticular junctions giving either ohmic conduction in the case of close contacts or quantum tunnelling when jumps though gaps are necessary. This in turn depends on a number of nanometric parameters such as the size and geometry of the nanofillers (spherical, cylindrical, lamellar), the method of structuring of the conductive architecture in the sensory system, etc. The present study focuses on the control of the interparticular junctions in quantum-resistive vapour sensors (vQRS) by nanoassembling pristine CNT or graphene covalently or noncovalently functionalized with spherical Buckminster fullerene (C60) into a percolated network with a hybrid structure. It is found that this strategy allows us to significantly boost, both selectivity and sensitivity of pristine CNT or graphene-based transducers exposed to a set of seven biomarkers, ethanol, methanol, acetone, chloroform, benzene, toluene, cyclohexane and water. This is assumed to result from the spherical fullerene acting on the electronic transport properties at the nanojunctions between the CNT or graphene nanofillers.
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6

Chen, Lingling, Wanshun Wang, Zefeng Lin, Yao Lu, Hu Chen, Binglin Li, Zhan Li, Hong Xia, Lihua Li y Tao Zhang. "Conducting molybdenum sulfide/graphene oxide/polyvinyl alcohol nanocomposite hydrogel for repairing spinal cord injury". Journal of Nanobiotechnology 20, n.º 1 (6 de mayo de 2022). http://dx.doi.org/10.1186/s12951-022-01396-8.

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AbstractA sort of composite hydrogel with good biocompatibility, suppleness, high conductivity, and anti-inflammatory activity based on polyvinyl alcohol (PVA) and molybdenum sulfide/graphene oxide (MoS2/GO) nanomaterial has been developed for spinal cord injury (SCI) restoration. The developed (MoS2/GO/PVA) hydrogel exhibits excellent mechanical properties, outstanding electronic conductivity, and inflammation attenuation activity. It can promote neural stem cells into neurons differentiation as well as inhibit the astrocytes development in vitro. In addition, the composite hydrogel shows a high anti-inflammatory effect. After implantation of the composite hydrogel in mice, it could activate the endogenous regeneration of the spinal cord and inhibit the activation of glial cells in the injured area, thus resulting in the recovery of locomotor function. Overall, our work provides a new sort of hydrogels for SCI reparation, which shows great promise for improving the dilemma in SCI therapy. Graphical Abstract
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7

Chandran, Akash M., S. Varun y Prasanna Kumar S. Mural. "Comparative study on thermal and electrical transport properties of hexagonal boron nitride and reduced graphene oxide/epoxy nanocomposite by transient plane source techniques and impedance spectroscopy". Journal of Materials Science: Materials in Electronics, 14 de septiembre de 2021. http://dx.doi.org/10.1007/s10854-021-06994-0.

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