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Título: | Discovering a selective semimetal element to increase hematite photoanode charge separation efficiency. |
Autor(es): | Nogueira, André Esteves Soares, Mario Rodrigo Santos Souza Junior, João Batista Ospina Ramirez, Carlos Alberto Souza, Flavio Leandro de Leite, Edson Roberto |
Data do documento: | 2019 |
Referência: | NOGUEIRA, A. E. et al. Discovering a selective semimetal element to increase hematite photoanode charge separation efficiency. Journal of Materials Chemistry A, v. 7, n. 28, p. 16992–16998, 2019. Disponível em: <https://pubs.rsc.org/en/content/articlelanding/2019/ta/c9ta05452a>. Acesso em: 11 out. 2022. |
Resumo: | This work describes a colloidal deposition process that exploits the thermal spreading ability of Sb over a hematite surface to obtain a mesoporous film with extensive open porosity and high degree of Sb5+ dispersion. The addition of Sb increased the efficiency of water oxidation by a factor of 4.5 and photocurrent at 1.23 VRHE by a factor of 6.5 compared to those of an unmodified hematite film prepared under the same conditions. The overall efficiency increase for water oxidation is attributed to more efficient charge separation. Sb was found to be an excellent selective semimetal modifier with high dispersion over the material. |
URI: | http://www.repositorio.ufop.br/jspui/handle/123456789/16364 |
Link para o artigo: | https://pubs.rsc.org/en/content/articlelanding/2019/ta/c9ta05452a |
DOI: | https://doi.org/10.1039/C9TA05452A |
ISSN: | 2050-7488 |
Aparece nas coleções: | DEQUI - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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ARTIGO_DiscoveringaSelectiveSemimetal.pdf Restricted Access | 1,31 MB | Adobe PDF | Visualizar/Abrir |
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