文献类型：期刊文献

英文题名：Synthesis, Microstructure and Photodegradation Activity of Bismuth Tungsten Oxides

作者：Shi, Jiawei[1];Liang, Ying[1];Li, Zhi[1];Fang, Bin[1]

机构：[1]East China Univ Sci & Technol, Sch Sci, Inst Nucl Technol & Applicat, Shanghai 200237, Peoples R China

年份：2019

卷号：4

期号：17

起止页码：5010

外文期刊名：CHEMISTRYSELECT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000471812400026)】；

基金：This research was supported by the National Natural Science Foundation of China (No. 51301071).

语种：英文

外文关键词：Nanostructures; Hydrothermal synthesis; Semiconductors; Photochemistry; Photodegradation

摘要：Bi2WO6, Bi2WO6/Bi3.84W0.16O6.24, Bi3.84W0.16O6.24/Bi2WO6 and Bi3.84W0.16O6.24 have been synthesized by a hydrothermal method. The pH and solvent species of the precursor play important roles in the phase composition and microstructure of the products, and further determine the photodegradation activitiy. The orthorhombic Bi2WO6 phase displays hierarchical architectures with different morphologies assembled by nanoplates, while the cubic Bi3.84W0.16O6.24 phase exhibits octahedron-like particles. All samples possess absorption bands in the visible-light region. Among the samples, Bi2WO6 structures exhibit the enhanced photodegradation activity due to the combination of the features of the ultrathin nanoplates and their assembled architectures. The special microstructure of Bi2WO6 can facilitate the transfer of photogenerated carriers to the interface of photocatalysts and dyes, and provide more active sites for the reactions of dyes and active radicles.