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| Registros recuperados : 304 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
25/03/2022 |
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Data da última atualização: |
24/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
OLIVEIRA, J. A.; SILVA, R. R. M.; SILVA, G. T. S. T. da; TORRES, J. A.; VALI, A.; RIBEIRO, C.; KRISHNAN, R.; RUOTOLO, L. A. M. |
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Afiliação: |
CAUE RIBEIRO DE OLIVEIRA, CNPDIA. |
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Título: |
Copper vanadates: Targeted synthesis of two pure phases and use in a photoanode/cathode setup for selective photoelectrochemical conversion .of carbon dioxide to liquid fuel. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Materials Research Bulletin, v 149, 111716, 2022. |
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ISSN: |
0025-5408 |
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DOI: |
https://doi.org/10.1016/j.materresbull.2021.111716 |
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Idioma: |
Inglês |
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Conteúdo: |
Durable photocathodes are a matter of crucial concern in photoelectrochemical (PEC) CO2 reduction and a photoanode/dark cathode configuration is a viable strategy to circumvent this stability issue. In this vein, this study addresses a literature gap related to emerging photoelectrode materials for solar fuels generation. First is the perennial problem of securing a pure phase in the ternary copper vanadate (Cu-V-O) family of inorganic semiconductors. An optimized synthesis route was developed to prepare two copper vanadates with distinct morphological and optical properties. The copper site valence in the precursor influenced the semiconductor composition type: a Cu(II) source led to n-type β-Cu2V2O7 while employing a Cu(I) source and an inert, deoxygenated environment, p-type α-CuVO3 was obtained. The α-CuVO3 photoelectrode was unstable and easily converted to β-Cu2V2O7. Therefore, only the PEC performance of β-Cu2V2O7 towards CO2 reduction was evaluated in this study, demonstrating that mainly methanol (generation flux: ~236 μmol cm-2 h− 1 ) was selectively formed. |
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Palavras-Chave: |
Catalytic properties; Chemical synthesis; Nanostructures. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02009naa a2200265 a 4500
001 2141339
005 2024-01-24
008 2022 bl uuuu u00u1 u #d
022 $a0025-5408
024 7 $ahttps://doi.org/10.1016/j.materresbull.2021.111716$2DOI
100 1 $aOLIVEIRA, J. A.
245 $aCopper vanadates$bTargeted synthesis of two pure phases and use in a photoanode/cathode setup for selective photoelectrochemical conversion .of carbon dioxide to liquid fuel.$h[electronic resource]
260 $c2022
520 $aDurable photocathodes are a matter of crucial concern in photoelectrochemical (PEC) CO2 reduction and a photoanode/dark cathode configuration is a viable strategy to circumvent this stability issue. In this vein, this study addresses a literature gap related to emerging photoelectrode materials for solar fuels generation. First is the perennial problem of securing a pure phase in the ternary copper vanadate (Cu-V-O) family of inorganic semiconductors. An optimized synthesis route was developed to prepare two copper vanadates with distinct morphological and optical properties. The copper site valence in the precursor influenced the semiconductor composition type: a Cu(II) source led to n-type β-Cu2V2O7 while employing a Cu(I) source and an inert, deoxygenated environment, p-type α-CuVO3 was obtained. The α-CuVO3 photoelectrode was unstable and easily converted to β-Cu2V2O7. Therefore, only the PEC performance of β-Cu2V2O7 towards CO2 reduction was evaluated in this study, demonstrating that mainly methanol (generation flux: ~236 μmol cm-2 h− 1 ) was selectively formed.
653 $aCatalytic properties
653 $aChemical synthesis
653 $aNanostructures
700 1 $aSILVA, R. R. M.
700 1 $aSILVA, G. T. S. T. da
700 1 $aTORRES, J. A.
700 1 $aVALI, A.
700 1 $aRIBEIRO, C.
700 1 $aKRISHNAN, R.
700 1 $aRUOTOLO, L. A. M.
773 $tMaterials Research Bulletin, v 149, 111716, 2022.
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