Synthesis of reduced graphene oxide and enhancement of its electrical and optical properties by attaching Ag nanoparticles |
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| Affiliation: | 1. Department of Physics, Jamia Millia Islamia, New Delhi, India;2. Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, India;3. M.J.P. Rohilkhand University, Bareilly, U.P., India;1. Department of Applied Physics, University for Development Studies, Navrongo, Ghana;2. Department of Physics, College of Agriculture and Natural Sciences, U.C.C., Ghana;3. Department of Mathematics, College of Agriculture and Natural Sciences, U.C.C., Ghana;1. Department of Physics and Engineering, Moldova State University, Chisinau MD-2009, Republic of Moldova;2. Institute of Applied Physics, Moldavian Academy of Science, Chisinau MD-2028, Republic of Moldova;3. Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea;1. Department of Solid State Physics, Yerevan State University, Alex Manoogian 1, 0025 Yerevan, Armenia;2. National University of Architecture and Construction of Armenia, Teryan 105, 0009 Yerevan, Armenia;3. Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, Arica, Chile;4. SUPA School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, United Kingdom;1. College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, PR China;2. School of New Energy, Shenyang Institute of Engineering, Shenyang 110136, PR China;3. College of Petroleum Engineering, Liaoning Shihua University, Fushun 113001, PR China;1. Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada R3T 2N2;2. Department of Physics/Theoretical Physics, University of Oulu, Oulu FIN-90014, Finland |
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| Abstract: | Graphene has attracted the attention of the scientists and researchers because of its peculiar properties. Because of various unique properties, graphene can be used in sensing device applications, solar cells and liquid crystal display devices etc. In this research paper, we present a chemical route towards bulk production of r-GO (reduced graphene oxide). We have employed a modified method to achieve better results which is often termed as modified Hummer's and Offeman method. It is modified in terms of filtration technique. We have also attached silver nanoparticles (Ag-NP) to as synthesised r-GO. After successful growth, silver nanoparticles have been attached to r-GO by suitable treatment with AgNO3 (aq.) N/50 solution. The as grown samples were characterised by FESEM, Raman Spectroscopy and EDS to make sure that r-GO and r-GO–Ag-NP have been successfully synthesised. The electrical and optical studies of the as grown samples were performed by dc conductivity measurements and UV visible spectroscopy. The conductivity was found to have increased with attachment of Ag-NP. The optical transmittance also improved to 90% as against 70% before Ag-NP attachment. The reduced graphene oxide attached with silver nanoparticles could find promising applications in synthesis of transparent electrode materials and optoelectronic devices. |
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| Keywords: | Reduced graphene oxide Nanoparticles SEM Raman spectroscopy EDS Transmittance Absorbance |
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