文献类型：期刊文献

英文题名：Intrinsic Photocatalysis of Morphology and Oxygen Vacancy-Tunable Ultrathin WO3 Nanosheets

作者：Zhou, Jianwei[1];Wang, Chubei[1];Jia, Chunyan[2];Zhou, Yuan[2];Duo, Fangfang[1];Wei, Zhengyan[2]

通讯作者：Zhou, JW[1]

机构：[1]Xinxiang Univ, Inst Energy & Fuel, Xinxiang 453003, Henan, Peoples R China;[2]Xinxiang Univ, Coll Chem & Chem Engn, Xinxiang 453003, Henan, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Xinxiang Univ, Inst Energy & Fuel, Xinxiang 453003, Henan, Peoples R China.|[110713]新乡学院化学化工学院;[11071]新乡学院;

年份：2020

卷号：5

期号：13

起止页码：4008-4016

外文期刊名：CHEMISTRYSELECT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000523711400034)】；

基金：. This work was partly supported by the project of science and technology of the Henan province (192102310496), science and technology innovation fund project of Xinxiang University (15ZP05), China

语种：英文

外文关键词：Nanosheets; oxygen vacancy; photocatalysis; tungsten trioxide

摘要：The oxygen-deficient WO3 nanosheets (WO3 NS) with pore structure were synthesized by a facile solvothermal approach and their microstructure and oxygen vacancy (V-o) were regulated via heat treating atmosphere. The mean thickness of WO3 NS is about 1.2 nm, which is equivalent to the thickness of single atom or molecule layer. The quantitative analyses on the ultrathin WO3 NS of catalytic dynamic and V-o concentrations have been done. The appropriate V-o concentration can play a critical role in the transfer/separation of surface photogenerated carriers. Using phenol as the target compound and hydrogen peroxide as the accelerant, under visible-light irradiation, the apparent rate constant of WO3-Ar NS is about 2.0 times and 1.8 times than that of WO3 nanoparticles and WO3-air NS, respectively. These unique photocatalytic properties were attributed to the contribution of atomic layers, suitable crystal phase and porous surface and appropriate V-o content, which increases the specific surface areas and regulates the electrical properties.