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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
05/07/2023 |
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Data da última atualização: |
27/11/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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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. |
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Afiliação: |
GELSON T.S.T. DA SILVA, FEDERAL UNIVERSITY OF SAO CARLOS; OSMANDO F. LOPES, FEDERAL UNIVERSITY OF UBERLANDIA; ARIADNE C. CATTO, FEDERAL UNIVERSITY OF SAO CARLOS; ANTONIO OTAVIO T. PATROCINIO, FEDERAL UNIVERSITY OF UBERLANDIA; JOÃO E.F. S. RODRIGUES, UNIVERSIDADE DE SÃO PAULO; ALEXANDRE MESQUITA, UNIVERSIDADE ESTADUAL PAULISTA (UNESP); CAUE RIBEIRO DE OLIVEIRA, CNPDIA; WALDIR AVANSI JR, FEDERAL UNIVERSITY OF SAO CARLOS; LUÍS F. DA SILVA, FEDERAL UNIVERSITY OF SAO CARLOS. |
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Título: |
Long-and short-range structure of SnO2 nanoparticles: Synthesis and photo (electro)catalytic activity. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Materials Chemistry and Physics, v. 305, 127989, 2023. |
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Páginas: |
1 - 9 |
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ISSN: |
0254-0584 |
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DOI: |
https://doi.org/10.1016/j.matchemphys.2023.127989 |
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Idioma: |
Inglês |
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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 |
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Palavras-Chave: |
Photoelectrocalysis; Synchrotron XRD; Water splitting; XANES. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02517naa a2200301 a 4500
001 2154814
005 2024-11-27
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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| Registros recuperados : 6 | |
| 3. |  | SOUSA, M. K. M.; RODRIGUES, S. J. S. de C.; VASCONCELOS, S. S.; MONTEIRO, V. M. Estoque de raízes finas em cultivos de palma de óleo (Elaeis guineensis) em sistemas agroflorestais em Tomé-Açú, Pará. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 17.; SEMINÁRIO DE PÓS-GRADUAÇÃO DA EMBRAPA AMAZÔNIA ORIENTAL, 1., 2013, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental, 2013. 1 CD-ROM. PIBIC 2013.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 4. | | SOUSA, M. K. M.; MONTEIRO, V. M. D.; VASCONCELOS, S. S. Produção de raízes finas em cultivos de palma de óleo (Elaeis guineensis) no Nordeste paraense. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA, 18.; SEMINÁRIO DE PÓS-GRADUAÇÃO DA EMBRAPA AMAZÔNIA ORIENTAL, 2., 2014, Belém, PA. Anais. Belém, PA: Embrapa Amazônia Oriental, 2014. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 6. | | CARVALHO, W. R. de; VASCONCELOS, S. S.; SOUZA, C. M. de A.; SILVA, I. do S. R. da; SOUSA, M. K. M.; MONTEIRO, V. M. D. Densidade aparente do solo em diferentes sistemas de uso e manejo do solo na Amazônia Oriental. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 9., 2013, Ilhéus. Políticas públicas, educação e formação em sistemas agroflorestais na construção de paisagens sustentáveis: anais. Ilhéus: SBSAF, 2013.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 6 | |
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