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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
27/11/2020 |
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Data da última atualização: |
16/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LIMA, N. A.; MENDONÇA, G. C.; SILVA, G. T. S. T.; LIMA, B. S.; PARIS, E. C.; BERNARDI, M. I. B. |
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Afiliação: |
ELAINE CRISTINA PARIS, CNPDIA. |
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Título: |
Influence of the synthesis method on CuWO4 nanoparticles for photocatalytic application. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Materials Science: Materials in Electronics, v. 32, n. 1, 2021. |
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Páginas: |
1139-1149 |
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ISSN: |
0957-4522 |
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DOI: |
https://doi.org/10.1007/s10854-020-04887-2 |
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Idioma: |
Inglês |
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Conteúdo: |
The textile industry is responsible for most of the consumption and inappropriate disposal of organic and highly toxic pollutants, such as dyes. Therefore, it is necessary to remediate polluting molecules before returning the water to the environment. Photocatalysis is a promising method for dye molecule degradation as it can provide complete mineralization through an efficient photocatalytic process. CuWO4 exhibits a band gap of 2.40 eV and can be excited with visible light, making it economically advantageous for industrial-scale applications. In this work, CuWO4 was synthesized by coprecipitation (CM), microwave-assisted hydrothermal (HM), and polymeric precursor (PPM) methods to evaluate the photocatalytic behavior in response to the different characteristics obtained from the synthesis routes. In photocatalytic measurements for OH· radical generation, the sacrificial agent H2O2 was used, and in order to delay the recombination process sodium oxalate and silver nitrate scavengers were applied under visible light. CuWO4 synthesized by PPM was more efficient in the dye degradation when the Ag+ scavenger was used, indicating that the predominant reaction mechanism was by direct oxidation or hydroxyl radicals. The surface charge (− 38.5 (PPM), − 29.7 (CM), and − 16.2 mV (HM)) influence was more relevant than the specific surface area (1 (PPM), 22 (CM), and 21 m2 g−1 (HM)) of the samples in the photocatalytic process. The complete degradation occurred in 80 min for the samples obtained by CM and HM and only 20 min were necessary for the sample synthesized by PPM. MenosThe textile industry is responsible for most of the consumption and inappropriate disposal of organic and highly toxic pollutants, such as dyes. Therefore, it is necessary to remediate polluting molecules before returning the water to the environment. Photocatalysis is a promising method for dye molecule degradation as it can provide complete mineralization through an efficient photocatalytic process. CuWO4 exhibits a band gap of 2.40 eV and can be excited with visible light, making it economically advantageous for industrial-scale applications. In this work, CuWO4 was synthesized by coprecipitation (CM), microwave-assisted hydrothermal (HM), and polymeric precursor (PPM) methods to evaluate the photocatalytic behavior in response to the different characteristics obtained from the synthesis routes. In photocatalytic measurements for OH· radical generation, the sacrificial agent H2O2 was used, and in order to delay the recombination process sodium oxalate and silver nitrate scavengers were applied under visible light. CuWO4 synthesized by PPM was more efficient in the dye degradation when the Ag+ scavenger was used, indicating that the predominant reaction mechanism was by direct oxidation or hydroxyl radicals. The surface charge (− 38.5 (PPM), − 29.7 (CM), and − 16.2 mV (HM)) influence was more relevant than the specific surface area (1 (PPM), 22 (CM), and 21 m2 g−1 (HM)) of the samples in the photocatalytic process. The complete degradation occurred in 80 min for the sample... Mostrar Tudo |
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Palavras-Chave: |
Oxic pollutants; Photocatalytic process. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02351naa a2200241 a 4500
001 2127141
005 2022-08-16
008 2021 bl uuuu u00u1 u #d
022 $a0957-4522
024 7 $ahttps://doi.org/10.1007/s10854-020-04887-2$2DOI
100 1 $aLIMA, N. A.
245 $aInfluence of the synthesis method on CuWO4 nanoparticles for photocatalytic application.$h[electronic resource]
260 $c2021
300 $a1139-1149
520 $aThe textile industry is responsible for most of the consumption and inappropriate disposal of organic and highly toxic pollutants, such as dyes. Therefore, it is necessary to remediate polluting molecules before returning the water to the environment. Photocatalysis is a promising method for dye molecule degradation as it can provide complete mineralization through an efficient photocatalytic process. CuWO4 exhibits a band gap of 2.40 eV and can be excited with visible light, making it economically advantageous for industrial-scale applications. In this work, CuWO4 was synthesized by coprecipitation (CM), microwave-assisted hydrothermal (HM), and polymeric precursor (PPM) methods to evaluate the photocatalytic behavior in response to the different characteristics obtained from the synthesis routes. In photocatalytic measurements for OH· radical generation, the sacrificial agent H2O2 was used, and in order to delay the recombination process sodium oxalate and silver nitrate scavengers were applied under visible light. CuWO4 synthesized by PPM was more efficient in the dye degradation when the Ag+ scavenger was used, indicating that the predominant reaction mechanism was by direct oxidation or hydroxyl radicals. The surface charge (− 38.5 (PPM), − 29.7 (CM), and − 16.2 mV (HM)) influence was more relevant than the specific surface area (1 (PPM), 22 (CM), and 21 m2 g−1 (HM)) of the samples in the photocatalytic process. The complete degradation occurred in 80 min for the samples obtained by CM and HM and only 20 min were necessary for the sample synthesized by PPM.
653 $aOxic pollutants
653 $aPhotocatalytic process
700 1 $aMENDONÇA, G. C.
700 1 $aSILVA, G. T. S. T.
700 1 $aLIMA, B. S.
700 1 $aPARIS, E. C.
700 1 $aBERNARDI, M. I. B.
773 $tJournal of Materials Science: Materials in Electronics$gv. 32, n. 1, 2021.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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| Registros recuperados : 8 | |
| 3. |  | PACHECO, L. P.; LEANDRO, W. M.; ASSIS, R. L. de; MACHADO, P. L. O. de A.; MADARI, B. E.; LIMA, N. A.; OLIVEIRA, F. B. de. Avaliação da produção de fitomassa e acúmulo de nitrogênio por plantas de cobertura na safrinha do cerrado goiano. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 32., 2009, Fortaleza. O solo e a produção de bioenergia: perspectivas e desafios: anais. Fortaleza: SBCS, 2009.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 4. | | WILHELM, A. E.; PEREIRA, J. N.; SILVA, R. P. D.; LIMA, N. A.; ESTEVES, T. C. F.; ANTONIASSI, R.; FELBERG, I.; CARRÃO-PANIZZI, M. C. Caraterização de linhagens de soja preta quanto aos ácidos graxos. In: CONGRESSO BRASILEIRO DE SOJA, 7.; MERCOSOJA, 2015, Florianópolis. Tecnologia e mercado global: perspectivas para soja: anais. Londrina: Embrapa Soja, 2015. Trabalho 33. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Trigo. |
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| 5. | | WILHELM, A. E.; PEREIRA, J. N.; SILVA, R. P. D.; LIMA, N. A.; ESTEVES, T. C. F.; ANTONIASSI, R.; FELBERG, I.; CARRÃO-PANIZZI, M. C. Caracterização de linhagens de soja preta quanto aos ácidos graxos. In: CONGRESSO BRASILEIRO DE SOJA, 7.; MERCOSOJA, 2015, Florianópolis. Tecnologia e mercado global: perspectivas para soja: anais. Londrina: Embrapa Soja, 2015. 3 p. Trabalho 33.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 6. | | WILHELM, A. E.; ANTONIASSI, R.; SILVA, R. P. D. da; DIAS, E.; LIMA, N. A.; MACHADO, A. F. de F.; GUEDES, A. M. M. Análisis cromatográfico de aceites con el método de metilación directa de Hartman & Lago. In: WORLD CONGRESS ON OILS & FATS AND ISF LECTURESRIP SERIES 31.; CONGRESSO LATINOAMERICANO DE GRASAS Y ACEITES, 16., 2015, Rosario. Evolución, inovacion y desafíos hacia un futuro sustentable: Proceedings... Rosario: AGA World Congress, 2015. 1 p. Poster 40. Organização: The International Society for Fat Research, Asociación Argentina de Grasas y Aceites, Latin American - American Oil Chemists' Society.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 8. | | LIMA, N. A. P. de; COSTA, M. F. O. e; MAGNABOSCO, C. U.; BRUNES, L. C.; LOPES, M. R.; EIFERT, E. da C. Evolução genética para características de carcaça em bovinos Nelore sob seleção para maciez da carne. In: SEMINÁRIO JOVENS TALENTOS, 13., 2019, Santo Antônio de Goiás. Resumos... Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2019. p. 49.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 8 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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