期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 2, 页码 491-495出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201708709
关键词
band gap; bismuth oxides; monolayers; oxygen vacancies; photocatalysts
资金
- National Program on Key Basic Research Project of China (973 Program) [2013CB632402]
- NSFC [51472194, 21777045]
- NSF of Hubei Province [2016CFA078]
- Wallenberg Foundation
Vacancy-rich layered materials with good electron-transfer property are of great interest. Herein, a full-spectrum responsive vacancy-rich monolayer BiO2-x has been synthesized. The increased density of states at the conduction band (CB) minimum in the monolayer BiO2-x is responsible for the enhanced photon response and photo-absorption, which were confirmed by UV/Vis-NIR diffuse reflectance spectra (DRS) and photocurrent measurements. Compared to bulk BiO2-x, monolayer BiO2-x has exhibited enhanced photocatalytic performance for rhodamine B and phenol removal under UV, visible, and near-infrared light (NIR) irradiation, which can be attributed to the vacancy VBi-O''' as confirmed by the positron annihilation spectra. The presence of VBi-O''' defects in monolayer BiO2-x promoted the separation of electrons and holes. This finding provides an atomic level understanding for developing highly efficient UV, visible, and NIR light responsive photocatalysts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据