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Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
05/07/2023 |
Data da última atualização: |
05/07/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SILVA, G. T. S. T. da; LOPES, O. F.; CATTO, A. C.; PATROCÍNIO, A. O. T.; RODRIGUES, J. E. F. S.; MESQUITA, A.; RIBEIRO, C.; AVANSI JR, W.; SILVA, L. F. da. |
Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
Título: |
Long-and short-range structure of SnO2 nanoparticles: Synthesis and photo (electro)catalytic activity. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Materials Chemistry and Physics, v. 305, 127989, 2023. |
Páginas: |
1 - 9 |
ISSN: |
0254-0584 |
DOI: |
https://doi.org/10.1016/j.matchemphys.2023.127989 |
Idioma: |
Inglês |
Conteúdo: |
We report herein a detailed study on the influence of hydrothermal treatment temperature on both long- and short-range structures of SnO2 nanoparticles (NPs) applied as photocatalysts for the discoloration of organic pollutants and as photoanodes for water splitting. Synchrotron X-ray diffraction and X-ray absorption near-edge spectroscopy measurements confirmed the enhancement of the structural order of SnO2 NPs as a function of hydrothermal temperature. Fourier transform infrared spectroscopy revealed that the hydrothermal treatment increased the amount of hydroxyl groups on the SnO2 NPs surface. Regarding the photocatalytic activity, the NPs were able to promote the discoloration of different dyes that can act as potential organic pollutants. The photoelectrocatalytic performance of the samples depended on the hydrothermal treatment temperature, with the degree of crystallinity and surface hydroxyl groups playing a significant role in their performance as photoanodes. In particular, the NPs treated at a higher temperature presented a better degree of crystallinity, in addition to many hydroxyls on their surface, leading to increased mobility of the photogenerated charge carriers and improving the interaction between the molecules degraded and the material surface. The results demonstrated that the hydroxyls adsorbed on the SnO2 surface favor the formation of hydroxyl radicals, a species that indirectly participate in the photocatalytic oxidation of rhodamine B dye. The photoelectrocatalytic tests showed that the NPs treated at 200 ?C increased oxygen evolution reaction performance. MenosWe report herein a detailed study on the influence of hydrothermal treatment temperature on both long- and short-range structures of SnO2 nanoparticles (NPs) applied as photocatalysts for the discoloration of organic pollutants and as photoanodes for water splitting. Synchrotron X-ray diffraction and X-ray absorption near-edge spectroscopy measurements confirmed the enhancement of the structural order of SnO2 NPs as a function of hydrothermal temperature. Fourier transform infrared spectroscopy revealed that the hydrothermal treatment increased the amount of hydroxyl groups on the SnO2 NPs surface. Regarding the photocatalytic activity, the NPs were able to promote the discoloration of different dyes that can act as potential organic pollutants. The photoelectrocatalytic performance of the samples depended on the hydrothermal treatment temperature, with the degree of crystallinity and surface hydroxyl groups playing a significant role in their performance as photoanodes. In particular, the NPs treated at a higher temperature presented a better degree of crystallinity, in addition to many hydroxyls on their surface, leading to increased mobility of the photogenerated charge carriers and improving the interaction between the molecules degraded and the material surface. The results demonstrated that the hydroxyls adsorbed on the SnO2 surface favor the formation of hydroxyl radicals, a species that indirectly participate in the photocatalytic oxidation of rhodamine B dye. The ph... Mostrar Tudo |
Palavras-Chave: |
Photoelectrocalysis; Synchrotron XRD; Water splitting; XANES. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02517naa a2200301 a 4500 001 2154814 005 2023-07-05 008 2023 bl uuuu u00u1 u #d 022 $a0254-0584 024 7 $ahttps://doi.org/10.1016/j.matchemphys.2023.127989$2DOI 100 1 $aSILVA, G. T. S. T. da 245 $aLong-and short-range structure of SnO2 nanoparticles$bSynthesis and photo (electro)catalytic activity.$h[electronic resource] 260 $c2023 300 $a1 - 9 520 $aWe report herein a detailed study on the influence of hydrothermal treatment temperature on both long- and short-range structures of SnO2 nanoparticles (NPs) applied as photocatalysts for the discoloration of organic pollutants and as photoanodes for water splitting. Synchrotron X-ray diffraction and X-ray absorption near-edge spectroscopy measurements confirmed the enhancement of the structural order of SnO2 NPs as a function of hydrothermal temperature. Fourier transform infrared spectroscopy revealed that the hydrothermal treatment increased the amount of hydroxyl groups on the SnO2 NPs surface. Regarding the photocatalytic activity, the NPs were able to promote the discoloration of different dyes that can act as potential organic pollutants. The photoelectrocatalytic performance of the samples depended on the hydrothermal treatment temperature, with the degree of crystallinity and surface hydroxyl groups playing a significant role in their performance as photoanodes. In particular, the NPs treated at a higher temperature presented a better degree of crystallinity, in addition to many hydroxyls on their surface, leading to increased mobility of the photogenerated charge carriers and improving the interaction between the molecules degraded and the material surface. The results demonstrated that the hydroxyls adsorbed on the SnO2 surface favor the formation of hydroxyl radicals, a species that indirectly participate in the photocatalytic oxidation of rhodamine B dye. The photoelectrocatalytic tests showed that the NPs treated at 200 ?C increased oxygen evolution reaction performance. 653 $aPhotoelectrocalysis 653 $aSynchrotron XRD 653 $aWater splitting 653 $aXANES 700 1 $aLOPES, O. F. 700 1 $aCATTO, A. C. 700 1 $aPATROCÍNIO, A. O. T. 700 1 $aRODRIGUES, J. E. F. S. 700 1 $aMESQUITA, A. 700 1 $aRIBEIRO, C. 700 1 $aAVANSI JR, W. 700 1 $aSILVA, L. F. da 773 $tMaterials Chemistry and Physics$gv. 305, 127989, 2023.
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Embrapa Instrumentação (CNPDIA) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
18/01/2012 |
Data da última atualização: |
18/01/2012 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
ANDRADE, M. L. M.; EUCLIDES, V. P. B.; MONTAGNER, D. B.; NANTES, N. N.; ZIMMER, K. A.; ECHEVERRIA, D. M. S. |
Afiliação: |
MÁRCIA LUANE MARQUES ANDRADE, Graduando em Zootecnia – FESAR; VALERIA PACHECO BATISTA EUCLIDES, CNPGC; DENISE BAPTAGLIN MONTAGNER, CNPGC; Bolsista de Apoio Técnico – CNPq.; Bolsista de Apoio Técnico – CNPq.; Universidade Federal da Grande Dourados – Bolsista Capes. |
Título: |
Características estruturais do dossel de capim-piatã sob lotação contínua |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 7., 2011, CAMPO GRANDE, MS. [Anais da]... Campo Grande, MS: Embrapa Gado de Corte, 2011. |
Idioma: |
Português |
Conteúdo: |
O objetivo deste trabalho foi avaliar a massa de forragem total de capim-piatã durante as estações do ano. |
Palavras-Chave: |
Capim-piatã. |
Thesagro: |
Outono; Primavera; Verão. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00839naa a2200229 a 4500 001 1912868 005 2012-01-18 008 2011 bl uuuu u00u1 u #d 100 1 $aANDRADE, M. L. M. 245 $aCaracterísticas estruturais do dossel de capim-piatã sob lotação contínua$h[electronic resource] 260 $c2011 520 $aO objetivo deste trabalho foi avaliar a massa de forragem total de capim-piatã durante as estações do ano. 650 $aOutono 650 $aPrimavera 650 $aVerão 653 $aCapim-piatã 700 1 $aEUCLIDES, V. P. B. 700 1 $aMONTAGNER, D. B. 700 1 $aNANTES, N. N. 700 1 $aZIMMER, K. A. 700 1 $aECHEVERRIA, D. M. S. 773 $tIn: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 7., 2011, CAMPO GRANDE, MS. [Anais da]... Campo Grande, MS: Embrapa Gado de Corte, 2011.
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