Structural and optical investigation of Nb5+-doped Sn3O4 for photoelectrochemical hydrogen production

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorRomeiro, Fernanda da Costa-
Autor(es): dc.creatorPerini, João Angelo Lima-
Autor(es): dc.creatorZanoni, Maria Valnice Boldrin-
Autor(es): dc.creatorOrlandi, Marcelo Ornaghi-
Data de aceite: dc.date.accessioned2025-08-21T22:52:38Z-
Data de disponibilização: dc.date.available2025-08-21T22:52:38Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jpcs.2024.112334-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301068-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301068-
Descrição: dc.descriptionWe report herein, the microwave-assisted hydrothermal (MAH) synthesis of Nb5+-doped Sn3O4 nanoparticles for the photoelectrochemical production of hydrogen (H2). Nb5+ ions inside the Sn3O4 created structural defects, contributing to a local structural disorder, as confirmed by micro-Raman spectra. Photoluminescence spectroscopy indicated the decrease of the violet-blue–green visible emission after adding Nb5+, revealing the formation of alternative energy pathways for the electron/hole recombination. Through the morphological analysis, it was observed that the Nb5+ dopant slightly changed the morphology of nano-petals in Sn3O4. We demonstrate that the 3 % Nb5+ doped-Sn3O4 photoanode presented higher charge carrier mobility, higher photocurrent density, and an impressive H2 production of 1.50 mmol L−1 in a 3 h experiment, compared to the pure Sn3O4 material. The best performance of the Nb5+ doped Sn3O4 nanomaterial could be ascribed to the formation of new energy levels in the Sn3O4 band gap, thereby inhibiting the electron-hole pair recombination and positively affecting the photoelectrochemical response of the doped material.-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, 55 Prof. Francisco Degni St, SP-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry, 55 Prof. Francisco Degni St, SP-
Idioma: dc.languageen-
Relação: dc.relationJournal of Physics and Chemistry of Solids-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHydrogen evolution reaction-
Palavras-chave: dc.subjectMicrowave hydrothermal synthesis-
Palavras-chave: dc.subjectNiobium-
Palavras-chave: dc.subjectPhotoelectrochemical properties-
Palavras-chave: dc.subjectTin oxide-
Título: dc.titleStructural and optical investigation of Nb5+-doped Sn3O4 for photoelectrochemical hydrogen production-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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