Catalyst-free Synthesis Of A Three-dimensional Nanoworm-like Gallium Oxide-graphene Nanosheet Hybrid Structure With Enhanced Optical Properties

dc.creatorKumar
dc.creatorRajesh; Dubey
dc.creatorPawan Kumar; Singh
dc.creatorRajesh Kumar; Vaz
dc.creatorAlfredo R.; Moshkalev
dc.creatorStanislav A.
dc.date2016
dc.date2017-11-13T13:44:20Z
dc.date2017-11-13T13:44:20Z
dc.date.accessioned2018-03-29T05:58:59Z
dc.date.available2018-03-29T05:58:59Z
dc.identifierRsc Advances. Royal Soc Chemistry, v. 6, p. 17669 - 17677, 2016.
dc.identifier2046-2069
dc.identifierWOS:000371163900093
dc.identifier10.1039/c5ra24577j
dc.identifierhttp://pubs.rsc.org/en/content/articlehtml/2016/RA/C5RA24577J
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/328745
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1365770
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionWe here report the synthesis and growth of catalyst-free three-dimensional beta-gallium oxide nanoworm-like nanostructures on graphene nanosheets (3D beta-Ga2O3@GNSs) using a solid mixture of graphite oxide and gallium acetylacetonate by the microwave (MW)-assisted method for the first time. The MW-assisted synthesis of the 3D beta-Ga2O3@GNSs hybrids contains 1D semiconducting beta-Ga2O3 nanoworms (NWs) and 2D highly conducting graphene nanosheets (GNSs) materials. The beta-Ga2O3 NWs have an average diameter of 200 nm and lengths of up to similar to 1 mu m grown on the GNSs. These 3D beta-Ga2O3@GNSs hybrids have been synthesized in a very short time with scalable amounts. The controlling parameters such as MW irradiation time and power were found to greatly influence the structural morphology of the assynthesized 3D beta-Ga2O3@GNSs hybrid. This method for the synthesis of 3D beta-Ga2O3@GNSs hybrids is imperative due to it allowing excellent control over experimental parameters, being low cost and having better reproducibility. Also, the catalyst-free MW-assisted method is a much more rapid and thus higher throughput alternative for effective and scalable growth over the conventional heating method. The crystallinity, structure, morphology, and optical analysis of the 3D beta-Ga2O3@GNSs hybrids are carried out utilizing several techniques. The formation of the 3D beta-Ga2O3@GNSs hybrids shows a band gap variation from 4.94 to 4.48 eV associated with the structural evolution. A suitable growth mechanism has been suggested for the formation of these 3D beta-Ga2O3@GNSs hybrids.
dc.description6
dc.description21
dc.description17669
dc.description17677
dc.descriptionCNPq (Brazil)
dc.descriptionFAPESP (Brazil)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageEnglish
dc.publisherRoyal Soc Chemistry
dc.publisherCambridge
dc.relationRSC Advances
dc.rightsaberto
dc.sourceWOS
dc.subjectChemical-vapor-deposition
dc.subjectBeta-ga2o3 Nanowires
dc.subjectGa2o3 Nanowires
dc.subjectPhotocatalytic Performance
dc.subjectPhase Junction
dc.subjectGas Sensors
dc.subjectThin-films
dc.subjectGrowth
dc.subjectPhotoluminescence
dc.subjectNanostructures
dc.titleCatalyst-free Synthesis Of A Three-dimensional Nanoworm-like Gallium Oxide-graphene Nanosheet Hybrid Structure With Enhanced Optical Properties
dc.typeArtículos de revistas


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