Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jcou.2021.101460 http://hdl.handle.net/11449/205901 |
Resumo: | 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. |
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Repositório Institucional da UNESP |
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2946 |
spelling |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanolCO2reductionMicrowave-assisted hydrothermal methodPhotoelectrochemical propertiesReduced graphene oxideSn3O4This 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.São Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni StSão Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni StUniversidade Estadual Paulista (Unesp)Romeiro, F. C. [UNESP]Silva, B. C. [UNESP]Martins, A. S. [UNESP]Zanoni, M. V.B. [UNESP]Orlandi, M. O. [UNESP]2021-06-25T10:23:09Z2021-06-25T10:23:09Z2021-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jcou.2021.101460Journal of CO2 Utilization, v. 46.2212-9820http://hdl.handle.net/11449/20590110.1016/j.jcou.2021.1014602-s2.0-85101071319Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of CO2 Utilizationinfo:eu-repo/semantics/openAccess2021-10-22T12:24:53Zoai:repositorio.unesp.br:11449/205901Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T12:24:53Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol |
title |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol |
spellingShingle |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol Romeiro, F. C. [UNESP] CO2reduction Microwave-assisted hydrothermal method Photoelectrochemical properties Reduced graphene oxide Sn3O4 |
title_short |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol |
title_full |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol |
title_fullStr |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol |
title_full_unstemmed |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol |
title_sort |
Superior performance of rGO-tin oxide nanocomposite for selective reduction of CO2to methanol |
author |
Romeiro, F. C. [UNESP] |
author_facet |
Romeiro, F. C. [UNESP] Silva, B. C. [UNESP] Martins, A. S. [UNESP] Zanoni, M. V.B. [UNESP] Orlandi, M. O. [UNESP] |
author_role |
author |
author2 |
Silva, B. C. [UNESP] Martins, A. S. [UNESP] Zanoni, M. V.B. [UNESP] Orlandi, M. O. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Romeiro, F. C. [UNESP] Silva, B. C. [UNESP] Martins, A. S. [UNESP] Zanoni, M. V.B. [UNESP] Orlandi, M. O. [UNESP] |
dc.subject.por.fl_str_mv |
CO2reduction Microwave-assisted hydrothermal method Photoelectrochemical properties Reduced graphene oxide Sn3O4 |
topic |
CO2reduction Microwave-assisted hydrothermal method Photoelectrochemical properties Reduced graphene oxide Sn3O4 |
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. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:23:09Z 2021-06-25T10:23:09Z 2021-04-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.jcou.2021.101460 Journal of CO2 Utilization, v. 46. 2212-9820 http://hdl.handle.net/11449/205901 10.1016/j.jcou.2021.101460 2-s2.0-85101071319 |
url |
http://dx.doi.org/10.1016/j.jcou.2021.101460 http://hdl.handle.net/11449/205901 |
identifier_str_mv |
Journal of CO2 Utilization, v. 46. 2212-9820 10.1016/j.jcou.2021.101460 2-s2.0-85101071319 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of CO2 Utilization |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964828948758528 |