Relation between the nature of the surface facets and the reactivity of Cu2O nanostructures anchored on TiO2NT@PDA electrodes in the photoelectrocatalytic conversion of CO2 to methanol

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.creatorTorquato, Lilian D. Moura [UNESP]-
Autor(es): dc.creatorPastrian, Fabián A.C.-
Autor(es): dc.creatorPerini, João A. Lima [UNESP]-
Autor(es): dc.creatorIrikura, Kallyni [UNESP]-
Autor(es): dc.creatorde L. Batista, Ana Paula-
Autor(es): dc.creatorde Oliveira-Filho, Antonio G.S.-
Autor(es): dc.creatorCórdoba de Torresi, Susana I.-
Autor(es): dc.creatorZanoni, Maria V. Boldrin [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:32:56Z-
Data de disponibilização: dc.date.available2022-02-22T00:32:56Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.apcatb.2019.118221-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/201223-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/201223-
Descrição: dc.descriptionThis paper investigates the influence of morphology of Cu2O nanoparticles (cubes, NcCu2O; spheres, NsCu2O; octahedrons, NoCu2O), deposited on TiO2 nanotubes (TiO2NT) coated with PDA, in the photoelectrocatalytic conversion of CO2 to methanol. At low bias (+0.2 V) a production of 10.0, 6.0 and 5.4 mg L−1 of methanol was obtained for TiO2NT@PDA-NsCu2O, TiO2NT@PDA-NoCu2O, and TiO2NT@PDA-NcCu2O electrodes, with faradaic efficiencies of 27, 39, and 66%, respectively. The conversion to methanol was 357% higher with NcCu2O, compared to the TiO2NT@PDA electrode. The results indicated that both the optical properties and the photocatalytic performance of nanostructures were facet-dependent. The superior catalytic activity of NcCu2O was attributed to the higher concentration of oxygen vacancies on {100} facets, which promotes the activation of CO2 with an energy of −1.2 kcal mol−1. With a lower concentration of oxygen vacancies, CO2 molecule is only physisorbed on {111} facets with an energy of −8.8 kcal mol−1.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni St-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactivies (INCT-DATREM) São Paulo State University (UNESP) Institute of Chemistry-
Descrição: dc.descriptionUniversity of São Paulo (USP) Institute of Chemistry, 748 Prof. Lineu Prestes Ave-
Descrição: dc.descriptionUniversity of São Paulo (USP) Faculty of Philosophy Sciences and Letters, 3900 Bandeirantes Ave-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, Araraquara. 55 Prof. Francisco Degni St-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactivies (INCT-DATREM) São Paulo State University (UNESP) Institute of Chemistry-
Descrição: dc.descriptionFAPESP: #150493/2017-7-
Descrição: dc.descriptionFAPESP: #2016/18057-7-
Descrição: dc.descriptionFAPESP: #2017/11631-2-
Descrição: dc.descriptionFAPESP: #2017/12790-7-
Descrição: dc.descriptionFAPESP: #2019/00463-7-
Idioma: dc.languageen-
Relação: dc.relationApplied Catalysis B: Environmental-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCO2 reduction-
Palavras-chave: dc.subjectCu2O-
Palavras-chave: dc.subjectMethanol-
Palavras-chave: dc.subjectPhotoelectrocatalysis-
Palavras-chave: dc.subjectPolydopamine-
Título: dc.titleRelation between the nature of the surface facets and the reactivity of Cu2O nanostructures anchored on TiO2NT@PDA electrodes in the photoelectrocatalytic conversion of CO2 to methanol-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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