| Title: | Designing and fabricating a CdS QDs/Bi(2)MoO(6) monolayer S-scheme heterojunction for highly efficient photocatalytic C(2)H(4) degradation under visible light |
| Author(s): | Xu X; Su Y; Dong Y; Luo X; Wang S; Zhou W; Li R; Homewood KP; Xia X; Gao Y; Chen X; |
| Address: | "Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China; School of Sciences, Hubei University of Automotive Technology, Shiyan 442002, China. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China; State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China. Electronic address: rli@hubu.edu.cn. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China. Electronic address: gaoyun@hubu.edu.cn. Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China. Electronic address: cxx0613@hubu.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2021.127685 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Achieving efficient photocatalytic degradation of atmospheric volatile organic compounds (VOCs) under sun-light is still a significant challenge for environmental protection. The S-scheme heterojunction with its unique charge migration route, high charge separation rate and strong redox ability, has great potential. However, how to regulate interfacial charge transfer of the S-scheme heterojunction is of significant importance. Here, density functional theory (DFT) calculations were first conducted and predicted that an S-scheme heterojunction could be formed in the CdS quantum dots/Bi(2)MoO(6) monolayer system. Subsequently, this novel heterojunction is constructed by in-situ hydrothermal synthesis of CdS quantum dots on monolayer Bi(2)MoO(6). Under visible-light, this novel S-scheme system gives a high-efficiency photocatalytic degradation rate (6.04 x 10(-2) min(-1)) towards C(2)H(4), which is 30.3 times higher than that of pure CdS (1.99 x 10(-3) min(-1)) and 41.7 times higher than pure Bi(2)MoO(6) (1.45 x 10(-3) min(-1)). Strong evidence for the S-scheme charge transfer path is provided by in-situ XPS, PL, TRPL and EPR" |
| Keywords: | Bi(2)MoO(6) monolayer CdS QDs Photocatalysis S-scheme VOCs; |
| Notes: | "PubMed-not-MEDLINEXu, Xinyue Su, Yanghang Dong, Yuanpeng Luo, Xiao Wang, Shihao Zhou, Wenyu Li, Rong Homewood, Kevin Peter Xia, Xiaohong Gao, Yun Chen, Xuxing eng Netherlands 2021/11/21 J Hazard Mater. 2022 Feb 15; 424(Pt D):127685. doi: 10.1016/j.jhazmat.2021.127685. Epub 2021 Nov 6" |
