期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 667, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2023.131357
关键词
Zinc tungstate; Zinc benzoate; Photocatalysis; Inorganic; organic heterojunction; Cr(VI) reduction
A novel inorganic/organic heterojunction photocatalyst, starfish-like zinc tungstate/zinc benzoate, was synthesized via a facile hydrothermal method, showing enhanced photocatalytic efficiency for Cr(VI) reduction in neutral solution.
The discharge of wastewater containing hexavalent chromium (Cr(VI)) would cause serious environmental pollution and endanger human health. Design of high-performance and stable photocatalysts for Cr(VI) reduction in neutral solution remain huge challenging. Herein, a novel starfish-like zinc tungstate/zinc benzoate (ZnWO4/ Zn(Bro)2) inorganic/organic heterojunction photocatalyst was synthesized via a facile hydrothermal method. The starfish-like zinc tungstate was decorated with uniform dispersed zinc benzoate nanosheets via a selfassembling process, The intimate interface between inorganic and organic phase significantly boosted the transport efficiency of photogenerated carriers and reduced the recombination probability of e- and h+, and enhanced the photocatalytic efficiency for Cr(VI) reduction. the optimized ZWBR-2 composite catalyst displayed conspicuous photocatalytic activity and stability towards the Cr(VI) reduction in neutral solution. This work gives a new perspective to design efficient and promising inorganic/organic heterojunction photocatalyst used in dealing with Cr(VI) in neutral solution.
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