| Texto completo | |
| Autor(es): |
dos Santos, Gustavo
;
Tian, Liang
;
Goncalves, Renato
;
Garcia, Hermenegildo
;
Rossi, Liane
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ADVANCED FUNCTIONAL MATERIALS; v. N/A, p. 15-pg., 2025-02-19. |
| Resumo | |
Photocatalysis has emerged as an alternative to high energy-demanding CO2 reduction reactions. Among the widely studied photocatalysts, g-C3N4 stands out due to its composition based on earth-abundant elements, its ability to absorb visible light, and its suitable band structure. In this study, a photocatalyst based on an S-scheme heterojunction formed by g-C3N4 and nanosized Fe2TiO5 is successfully prepared via simple hydrothermal assembly of both pre-synthesized semiconductors. Modifications induced on g-C3N4 during the heterojunction preparation play a crucial role in the efficiency of the CO2 photoreduction reaction. Under simulated sunlight irradiation, the g-C3N4/Fe2TiO5 heterojunction exhibits higher photocatalytic performance than the pristine materials for both CO2 reduction to produce CO and CH4, and H2O reduction reaction, producing H-2. The results obtained correspond to a 1.5-fold improvement compared to pristine g-C3N4. When [Ru(bpy)(3)](2+) is applied as a sensitizer, the visible light (>380 nm) activity of the photocatalytic system is restored, showing lower activity but higher selectivity toward CO and H-2 production, a route to renewable syngas. (AU) | |
| Processo FAPESP: | 20/15230-5 - Centro de Pesquisa e Inovação de Gases de Efeito Estufa - RCG2I |
| Beneficiário: | Julio Romano Meneghini |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 14/50279-4 - Brasil Research Centre for Gas Innovation |
| Beneficiário: | Julio Romano Meneghini |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 21/00675-4 - Arquitetura de materiais para armazenamento de energia eletroquímica e catálise |
| Beneficiário: | Roberto Manuel Torresi |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |