Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorRomeiro, F. C. [UNESP]-
Autor(es): dc.creatorSilva, B. C. [UNESP]-
Autor(es): dc.creatorMartins, A. S. [UNESP]-
Autor(es): dc.creatorZanoni, M. V.B. [UNESP]-
Autor(es): dc.creatorOrlandi, M. O. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:45:38Z-
Data de disponibilização: dc.date.available2022-02-22T00:45:38Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jcou.2021.101460-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205901-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205901-
Descrição: dc.descriptionThis study reports on the photoelectrochemical reduction of CO2 to methanol using Sn3O4 and reduced graphene oxide-tin oxide (rGO-Sn) nanocomposite synthesized through the microwave-assisted hydrothermal method. The resulting rGO-Sn nanocomposite exhibited enhanced activity and good stability during photoelectrochemical CO2 reduction explained by Z-scheme electron transport. Graphene oxide (GO) has played a crucial role in the chemical composition and morphology of nanocomposites. The interaction between GO and Sn2+ ions during synthesis promoted the formation of the SnO2 phase in the nanocomposite, thus generating mixed rGO/Sn3O4/SnO2 phases (the rGO-Sn nanocomposite). Remarkable selectivity for CO2/methanol conversion was obtained for both Sn3O4 and the nanocomposite at different potentials, in which the nanocomposite presented the highest conversion to methanol with a faradaic efficiency of 45 % at -0.3 V vs. Ag/AgCl. The improved activity of the nanocomposite was ascribed to the efficient use of solar energy (UV + visible light), to the decrease in electronic recombination in nanocomposite, which enabled an efficient electron-hole separation on the surface of the nanocomposite, and to the presence of rGO being combined with Sn3O4 and SnO2 structures, which ensured a faster charge transport rate. This study reveals the potential of rGO-Sn nanocomposites as photocathodic material for solar-to-chemical energy conversion.-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni St-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni St-
Idioma: dc.languageen-
Relação: dc.relationJournal of CO2 Utilization-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCO2reduction-
Palavras-chave: dc.subjectMicrowave-assisted hydrothermal method-
Palavras-chave: dc.subjectPhotoelectrochemical properties-
Palavras-chave: dc.subjectReduced graphene oxide-
Palavras-chave: dc.subjectSn3O4-
Título: dc.titleSuperior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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