Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/253036 |
Resumo: | In the present work, we report the obtaining of nanostructured porous Nb2O5 by anodizing process, with Pt, Ta, Cu, or Ti impregnation, and by magnetron sputtering process. The techniques of scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were used to evaluate the morphology, and the composition and crystalline structure of nanoporous Nb2O5. The photocatalytic activity was evaluated by electrochemical photocurrent tests under UV light illumination. Nanostructured porous Nb2O5 with Pt, Ta, Cu, and Ti impregnation presented bandgap reduction and 10 times higher photocurrent density in the presence of UV light when compared to the not impregnated nanoporous Nb2O5. |
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Antonini, Leonardo MarascaAdamski, JaniceBernardi, FabianoAguzzoli, CesarHubler, RobertoMalfatti, Célia de Fraga2022-12-21T04:53:26Z20222578-3270http://hdl.handle.net/10183/253036001154719In the present work, we report the obtaining of nanostructured porous Nb2O5 by anodizing process, with Pt, Ta, Cu, or Ti impregnation, and by magnetron sputtering process. The techniques of scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were used to evaluate the morphology, and the composition and crystalline structure of nanoporous Nb2O5. The photocatalytic activity was evaluated by electrochemical photocurrent tests under UV light illumination. Nanostructured porous Nb2O5 with Pt, Ta, Cu, and Ti impregnation presented bandgap reduction and 10 times higher photocurrent density in the presence of UV light when compared to the not impregnated nanoporous Nb2O5.application/pdfengInternational Journal of Ceramic Engineering and Science [recurso eletrônico]. [Hoboken]. Vol. 4, n. 6 (nov. 2022), p. 379-390Óxido de nióbioAnodizaçãoAnodizing processImpregnationNanoporous Nb2O5Photocurrent densityPhotoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnationEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001154719.pdf.txt001154719.pdf.txtExtracted Texttext/plain53421http://www.lume.ufrgs.br/bitstream/10183/253036/2/001154719.pdf.txtcc677e6312936727af6e20c14d54df67MD52ORIGINAL001154719.pdfTexto completo (inglês)application/pdf1680228http://www.lume.ufrgs.br/bitstream/10183/253036/1/001154719.pdf08d0a34d5ff4598cf196877fb630d4a2MD5110183/2530362023-07-08 03:36:24.587208oai:www.lume.ufrgs.br:10183/253036Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-08T06:36:24Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation |
title |
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation |
spellingShingle |
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation Antonini, Leonardo Marasca Óxido de nióbio Anodização Anodizing process Impregnation Nanoporous Nb2O5 Photocurrent density |
title_short |
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation |
title_full |
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation |
title_fullStr |
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation |
title_full_unstemmed |
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation |
title_sort |
Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation |
author |
Antonini, Leonardo Marasca |
author_facet |
Antonini, Leonardo Marasca Adamski, Janice Bernardi, Fabiano Aguzzoli, Cesar Hubler, Roberto Malfatti, Célia de Fraga |
author_role |
author |
author2 |
Adamski, Janice Bernardi, Fabiano Aguzzoli, Cesar Hubler, Roberto Malfatti, Célia de Fraga |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Antonini, Leonardo Marasca Adamski, Janice Bernardi, Fabiano Aguzzoli, Cesar Hubler, Roberto Malfatti, Célia de Fraga |
dc.subject.por.fl_str_mv |
Óxido de nióbio Anodização |
topic |
Óxido de nióbio Anodização Anodizing process Impregnation Nanoporous Nb2O5 Photocurrent density |
dc.subject.eng.fl_str_mv |
Anodizing process Impregnation Nanoporous Nb2O5 Photocurrent density |
description |
In the present work, we report the obtaining of nanostructured porous Nb2O5 by anodizing process, with Pt, Ta, Cu, or Ti impregnation, and by magnetron sputtering process. The techniques of scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were used to evaluate the morphology, and the composition and crystalline structure of nanoporous Nb2O5. The photocatalytic activity was evaluated by electrochemical photocurrent tests under UV light illumination. Nanostructured porous Nb2O5 with Pt, Ta, Cu, and Ti impregnation presented bandgap reduction and 10 times higher photocurrent density in the presence of UV light when compared to the not impregnated nanoporous Nb2O5. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-12-21T04:53:26Z |
dc.date.issued.fl_str_mv |
2022 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/253036 |
dc.identifier.issn.pt_BR.fl_str_mv |
2578-3270 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001154719 |
identifier_str_mv |
2578-3270 001154719 |
url |
http://hdl.handle.net/10183/253036 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
International Journal of Ceramic Engineering and Science [recurso eletrônico]. [Hoboken]. Vol. 4, n. 6 (nov. 2022), p. 379-390 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
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UFRGS |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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