文献类型：期刊文献

英文题名：Self-induced synthesis under neutral conditions and novel visible light photocatalytic activity of Ag4V2O7 polyoxometalate

作者：Zhou, Dan[1];Chen, Yi-Xiang[1];Yuan, Xiao-Yu[1];Lu, Yi[1];Zhang, Min[1];Liu, Jin-Ku[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：45

期号：21

起止页码：9569

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20212410488662);WOS:【SCI-EXPANDED(收录号:WOS:000649777800001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 21878090).

语种：英文

外文关键词：Catalyst activity - Dyes - Vanadium compounds - Photocatalytic activity - Degradation - Oxides - Anionic surfactants - Nanorods

摘要：The bifunction of strong proton acidity and oxidation renders polyoxometalates (POMs) with great potential in catalysis. Utilizing their excellent catalytic activity to tackle antibiotic residues in water is meaningful but challenging. In this work, the self-induced synthesis of Ag4V2O7 POM with a 3D nanorod-bundle structure was achieved by the local aggregation effect of the protons of sodium dodecyl sulfonate (SDS) under neutral conditions rather than an alkaline environment. The discovery of the bifunctionality of anionic surfactants provided a more convenient approach to synthesize materials for industry. The experimental results demonstrated that the degradation rate and reaction rate of Ag4V2O7 POM to Rhodamine B dye were 4.64 and 30.00 times higher than a pure AgVO3 catalyst, respectively. An increase in the A/V ratio of silver vanadium oxide (SVO) resulted in a negative shift of the valence band, accompanied by a decrease in the bandgap. Meanwhile, efficient separation and transmission of photogenerated carriers and increased surface hydroxyl density also intensified the photocatalytic activity of Ag4V2O7 POM. In particular, Ag4V2O7 POM was applied to antibiotic degradation creatively, resulting in an emerging class of catalysts for the degradation of antibiotics.