文献类型：期刊文献

英文题名：Preparation of visible light-driven g-C3N4@ZnO hybrid photocatalyst via mechanochemistry

作者：Zhou, Jianwei[1,2];Zhang, Mo[2];Zhu, Yongfa[2]

第一作者：Zhou, Jianwei

通讯作者：Zhu, YF[1]

机构：[1]Xinxiang Univ, Inst Energy & Fuel, Xinxiang 453003, Peoples R China;[2]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China.

年份：2014

卷号：16

期号：33

起止页码：17627-17633

外文期刊名：PHYSICAL CHEMISTRY CHEMICAL PHYSICS

收录：;Scopus(收录号：2-s2.0-84905457603);WOS:【SCI-EXPANDED(收录号:WOS:000341064800031)】；

基金：This work was partly supported by National Basic Research Program of China (973 Program) (2013CB632403), National High Technology Research and Development Program of China (2012AA062701) and Chinese National Science Foundation (20925725 and 21373121)

语种：英文

摘要：C3N4@ZnO hybrid materials with visible light photocatalytic performance have been prepared by facile mechanical milling. The dispersion of conjugated molecule g-C3N4 on the surface of ZnO improved during mechanical process, and the multilayer hybrid structure of g-C3N4@ZnO materials with remarkable visible light photocatatytic activity was formed by ball milling. The photocatalytic activity and photocurrent intensity of g-C3N4@ZnO under visible light irradiation was 3.0 and 2.0 times higher than those of pure C3N4, respectively. The great enhancement of visible light response originates from the increase of separation and immigration efficiency of photogenerated electron hole pairs. Furthermore, a synergistic photocatalysis mechanism between ZnO and g-C3N4 was proposed. The enhanced visible light photocatalytic properties originate from the injection of excited electrons from the LUMO of C3N4 to the CB of ZnO. However, the photocatalytic activity of the photocatalyst is much lower than that of ZnO under UV light, which is caused by the lattice defect of ZnO formed during milling.