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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
20/10/2025 |
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Data da última atualização: |
20/10/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HU, J.; OSELLA, S.; REIS, E. A. dos; SILVA, A. B. da; OLIVEIRA, C. R. de; MASCARO, L. H.; ALBERO, J.; GARCIA, H. |
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Afiliação: |
INSTITUTO UNIVERSITARIO DE TECNOLOGÍA QUÍMICA, CSIV-UPV; UNIVERSITY OF WARSAW; INSTITUTO UNIVERSITARIO DE TECNOLOGÍA QUÍMICA, CSIV-UPV; INSTITUTO UNIVERSITARIO DE TECNOLOGÍA QUÍMICA, CSIV-UPV; CAUE RIBEIRO DE OLIVEIRA, CNPDIA; UNIVERSIDADE FEDERAL DE SAO CARLOS; INSTITUTO UNIVERSITARIO DE TECNOLOGÍA QUÍMICA, CSIV-UPV; INSTITUTO UNIVERSITARIO DE TECNOLOGÍA QUÍMICA, CSIV-UPV. |
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Título: |
Mixed Fe-Mo carbide prepared by a sonochemical synthesis as highly efficient nitrate reduction electrocatalyst. |
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Ano de publicação: |
2025 |
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Fonte/Imprenta: |
Applied Catalysis B: Environment and Energy, v. 357, 124247, 2024. |
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Páginas: |
9 p. |
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ISSN: |
0926-3373 |
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DOI: |
https://doi.org/10.1016/j.apcatb.2024.124247 |
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Idioma: |
Inglês |
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Conteúdo: |
through the energy-intensive Haber-Bosch process. Recently, the electrochemical nitrate reduction reaction (NO3RR) using electricity generated from renewable sources has attracted widespread attention. However, the complex reaction pathway of NO3RR leads to the formation of many undesirable by-products. Herein we successfully prepared a mixed (FeMo)2C catalyst with good electrocatalytic NO3RR, having a NH3 yield of 14.66 mg h-1 cm-2 and an FE of 94.35% at low potential -0.3 V vs RHE. DFT calculations show that the presence of Fe in Mo2C lattice changes the reaction mechanism, decreasing the potential barrier to be overcome from 1.36 to 0.89 eV. In addition, mixed Fe-Mo carbide facilitates the adsorption of intermediates and promotes NH3 desorption, facilitating NO3 − reduction to NH3. In addition, (FeMo)2C was used as cathode for Zn-NO3 battery to generate electricity, producing ammonia at the same time, with a power density of 3.8 mWcm-2 and an NH3 FE of 88%. This work describes a new synthesis method for mixed metal carbides and provides a promising strategy for NH3 production. |
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Palavras-Chave: |
Ammonia synthesis; Density functional theory; Sonochemical synthesis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01954naa a2200277 a 4500
001 2180370
005 2025-10-20
008 2025 bl uuuu u00u1 u #d
022 $a0926-3373
024 7 $ahttps://doi.org/10.1016/j.apcatb.2024.124247$2DOI
100 1 $aHU, J.
245 $aMixed Fe-Mo carbide prepared by a sonochemical synthesis as highly efficient nitrate reduction electrocatalyst.$h[electronic resource]
260 $c2025
300 $a9 p.
520 $athrough the energy-intensive Haber-Bosch process. Recently, the electrochemical nitrate reduction reaction (NO3RR) using electricity generated from renewable sources has attracted widespread attention. However, the complex reaction pathway of NO3RR leads to the formation of many undesirable by-products. Herein we successfully prepared a mixed (FeMo)2C catalyst with good electrocatalytic NO3RR, having a NH3 yield of 14.66 mg h-1 cm-2 and an FE of 94.35% at low potential -0.3 V vs RHE. DFT calculations show that the presence of Fe in Mo2C lattice changes the reaction mechanism, decreasing the potential barrier to be overcome from 1.36 to 0.89 eV. In addition, mixed Fe-Mo carbide facilitates the adsorption of intermediates and promotes NH3 desorption, facilitating NO3 − reduction to NH3. In addition, (FeMo)2C was used as cathode for Zn-NO3 battery to generate electricity, producing ammonia at the same time, with a power density of 3.8 mWcm-2 and an NH3 FE of 88%. This work describes a new synthesis method for mixed metal carbides and provides a promising strategy for NH3 production.
653 $aAmmonia synthesis
653 $aDensity functional theory
653 $aSonochemical synthesis
700 1 $aOSELLA, S.
700 1 $aREIS, E. A. dos
700 1 $aSILVA, A. B. da
700 1 $aOLIVEIRA, C. R. de
700 1 $aMASCARO, L. H.
700 1 $aALBERO, J.
700 1 $aGARCIA, H.
773 $tApplied Catalysis B: Environment and Energy$gv. 357, 124247, 2024.
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