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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.creator | Romeiro, F. C. [UNESP] | - |
Autor(es): dc.creator | Silva, B. C. [UNESP] | - |
Autor(es): dc.creator | Martins, A. S. [UNESP] | - |
Autor(es): dc.creator | Zanoni, M. V.B. [UNESP] | - |
Autor(es): dc.creator | Orlandi, M. O. [UNESP] | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:45:38Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:45:38Z | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-06-25 | - |
Data de envio: dc.date.issued | 2021-04-01 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1016/j.jcou.2021.101460 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/205901 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/205901 | - |
Descrição: dc.description | This 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.description | São Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni St | - |
Descrição: dc.description | São Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni St | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Journal of CO2 Utilization | - |
???dc.source???: dc.source | Scopus | - |
Palavras-chave: dc.subject | CO2reduction | - |
Palavras-chave: dc.subject | Microwave-assisted hydrothermal method | - |
Palavras-chave: dc.subject | Photoelectrochemical properties | - |
Palavras-chave: dc.subject | Reduced graphene oxide | - |
Palavras-chave: dc.subject | Sn3O4 | - |
Título: dc.title | Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
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