| Texto completo | |
| Autor(es): |
Claudino, Caroline Helena
;
Rodrigues, Barbara Scola
;
Factori, Irina Marinho
;
de Souza, Juliana dos Santos
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CHEMISTRYSELECT; v. 9, n. 12, p. 13-pg., 2024-03-26. |
| Resumo | |
Photocatalytic degradation of pollutants has been extensively studied. Among the investigated photocatalysts, BiVO4 has emerged as a very promising material. BiVO4 is known for its narrow band-gap energy suitable for solar-driven reactions; however, it is subjected to challenges such as charge recombination and slow electron transfer kinetics. Combining BiVO4 with g-C3N4 proves promising, aligning energy levels and leveraging unique charge transport properties to enhance dye degradation under visible light. This study reports a novel synthesis of g-C3N4-BiVO4 heterojunction through in-situ urea pyrolysis, ensuring homogeneous dispersion. While maintaining the monoclinic structure of BiVO4, the heterojunction exhibits increased surface area and a more negative zeta potential, influencing catalyst-substrate to be degraded interactions. Adsorption studies reveal distinct behaviors with cationic dyes (MB and RhB) forming multilayers, hindering light absorption, and reducing photocatalytic efficiency. Conversely, the heterojunction performs efficiently with the anionic MO dye. Photoelectrochemical studies show that the heterojunction has succeeded in promoting the separation of photogenerated charges. The study lays the groundwork for optimizing synthesis methods and designing nanocomposites with superior photocatalytic activities. (AU) | |
| Processo FAPESP: | 21/05958-4 - Modulação de propriedades físico-químicas de semicondutores metálicos através do controle dos parâmetros de síntese assistida por micro-ondas |
| Beneficiário: | Juliana dos Santos de Souza Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 20/02886-0 - Desenvolvimento de fotocatalisadores baseados em nanoestruturas hibridas de BiVO4/WO3, nitreto de carbono grafítico e cubanos de cobalto |
| Beneficiário: | Caroline Helena Claudino |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 19/26010-9 - Dispositivos fotoativos baseados em heterojunções de vanadato de bismuto e óxido de tungstênio sobre grafeno |
| Beneficiário: | Bárbara Scola Rodrigues |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado Direto |