| Texto completo | |
| Autor(es): |
Rodrigues, Barbara S.
;
Niederberger, Markus
;
Souza, Juliana S.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MATERIALS ADVANCES; v. 5, n. 11, p. 13-pg., 2024-04-25. |
| Resumo | |
Tungsten oxide (WO3) is a promising material for photocatalysis. Coupling it with graphene-based materials can enhance its electronic conductivity. One effective technique for synthesizing WO3 nanomaterials is microwave-assisted solvothermal synthesis, which selectively heats the reaction species and reduces the reaction time. We report a straightforward route for preparing a WO3 nanomaterial modified with graphene oxide (WO(3)GO) using microwave-assisted solvothermal synthesis. We investigated the effect of various synthesis parameters, such as the irradiation time and reaction temperature. WO3 nanoplatelets were obtained under all conditions investigated; also, adding GO to the reaction did not change the WO3 morphology. It was observed that the crystal phase related to tungsten oxide can be modulated by temperature or time. Hexagonal WO3<middle dot>H2O was obtained at temperatures of 160 and 180 degrees C, whereas at 200 degrees C, monoclinic WO3 was formed. All WO(3)GO materials were active for methylene blue, rhodamine B and methyl orange photodegradation. Also, incorporating GO increased the photoactivity of the materials. (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: | 21/12018-8 - Estudo do mecanismo de crescimento de óxido de tungstênio em grafeno via síntese-assistida por micro-ondas |
| Beneficiário: | Bárbara Scola Rodrigues |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto |
| 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 |