Insights on the Use of Carbon Additives as Promoters of the Visible-Light Photocatalytic Activity of Bi₂WO₆.

ABSTRACT: We have explored the impact of the incorporation of various amounts of carbons from varied physicochemical features as additives to Bi₂WO₆ for the photocatalytic degradation of a dye using simulated solar light. Data has revealed that the composition and acidic character of the carbon additive are important parameters in the performance of the Bi₂WO₆/carbon catalysts. The presence of a carbon additive improved the conversion of the dye, evidencing the occurrence of charge transfer reactions that involve radical mediated reactions. The catalysts prepared with 2 and 5 wt.% of carbon additive outperformed the bare semiconductor, despite the shielding effect of the carbon matrix. The acidic nature of the Bi₂WO₆/carbon catalysts governs the degradation pathway (due to the preferential adsorptio

SUBMITTER: Gomis-Berenguer A 

PROVIDER: S-EPMC6384959 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature