文献类型：期刊文献

英文题名：Synthesis of Z-scheme g-C3N4/PPy/Bi2WO6 composite with enhanced visible-light photocatalytic performance

作者：Jiao, Zheng[1];Tang, Yan[1];Zhao, Pandeng[1];Li, Shen[1];Sun, Tianchi[1];Cui, Shicong[2];Cheng, Lingli[1]

机构：[1]Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China;[2]East China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2019

卷号：113

起止页码：241

外文期刊名：MATERIALS RESEARCH BULLETIN

收录：;EI(收录号：20190806517247);WOS:【SCI-EXPANDED(收录号:WOS:000461403000033)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 21671128, 21571063, 21671130).

语种：英文

外文关键词：Z-scheme; Polypyrrole; g-C3N4; Bi2WO6 microflower; Photocatalysis

摘要：An all-solid-state Z-scheme photocatalytic system g-C3N4/PPy/Bi2WO6 (GPB) is successfully fabricated by introducing both polypyrrole (PPy) and graphitic carbon nitride (g-C3N4) nanoparticles on the surface of Bi2WO6 microflowers. PPy, as a kind of conductive polymers, can be regarded as the Ohmic contact in Z-scheme systems. Furthermore, PPy serves as a charge transmission bridge between the g-C3N4 and the Bi2WO6. The g-C3N4/PPy/Bi2WO6 sample with the PPy amount of 0.5 wt% (GPB-0.5) exhibits enhanced visible-light absorption and high electron-hole separation efficiency. It can remove 98.0% of RhB within 100 min, the photocatalytic activity of which is higher than that of other control samples. Both photoelectrochemical test and scavenging experiment identify that h(+) and center dot O-2(-) are the main active species in the photocatalysis process. Our work could offer a new sight to design and fabricate photocatalyst with excellent utilization efficiency of solar energy.