The simultaneous removal of heavy metals and organic contaminants over a Bi₂WO₆/mesoporous TiO₂ nanotube composite photocatalyst.

ABSTRACT: In this study, Bi₂WO₆/mesoporous TiO₂ nanotube composites (BWO/TNTs) were successfully synthesized to remove the heavy metal Cr(vi) and refractory organic compound dibutyl phthalate (DBP) from contaminated water under visible light. Coupling TNTs with BWO can greatly improve the photocatalytic activity of the catalyst for treating Cr(vi)-DBP mixed pollutants because of synergetic effects from Cr(vi) and DBP. Specifically, the visible-light photocatalytic activities of 3% BWO/TNTs for removing DBP and Cr(vi) from mixed pollutant solutions were 10.8 and 3.8 times higher than those of BWO. Firstly, this system can take full advantage of charge carriers and can spatially separate reduction sites and oxidation sites in the photocatalyst. Secondly, TNTs has a uni

SUBMITTER: Cheng L 

PROVIDER: S-EPMC9054361 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature