物理化学学报2025，Vol.41Issue(6)：103-114,12.DOI:10.1016/j.actphy.2025.100065
CeO2/Bi19Br3S27 S型异质结的高效界面电荷转移用于增强光催化CO2还原
Efficient interfacial charge transfer of CeO2/Bi19Br3S27 S-scheme heterojunction for boosted photocatalytic CO2 reduction
摘要
Abstract
Improving the separation efficiency of photogenerated charge carriers to significantly enhance the redox capability of photocatalysts remains a major challenge in the field of photocatalysis.To address this issue,this study successfully synthesized a CeO2/Bi19Br3S27 S-scheme heterojunction catalyst using a hydrothermal method,aiming to enhance the photocatalytic performance of the catalyst.The synthesis of the CeO2/Bi19Br3S27 composite not only improved the separation efficiency of photogenerated charge carriers but also endowed the catalyst with stronger redox capabilities and greater driving force,significantly boosting its photocatalytic performance.Experimental results showed that the CO production rate of the CeO2/Bi19Br3S27 composite catalyst reached 13.5 μmol g-1 h-1,which is 5.19 times higher than that of the pure Bi19Br3S27 catalyst and 2.81 times higher than that of the pure CeO2 catalyst.This significant enhancement indicates that the CeO2/Bi19Br3S27 composite catalyst exhibited stronger catalytic performance in CO generation reactions.Furthermore,CeO2/Bi19Br3S27 catalyst achieved a CH4 production rate of 4.3 μmol g-1 h-1,which is 3.1 times higher than that of the CeO2 catalyst and 2.7 times higher than that of the Bi19Br3S27 catalyst,further confirming its superior performance in CH4 generation reactions.These results demonstrate that the CeO2/Bi19Br3S27 composite catalyst not only shows significant improvements in CO and CH4 production rates but also exhibits excellent photocatalytic performance,highlighting its potential application in the field of photocatalysis.This study provides new insights into improving the separation efficiency of photogenerated charges and offers valuable references for the future development of highly efficient photocatalytic materials.By constructing the S-scheme heterojunction structure,the recombination of photogenerated charge carriers can be effectively suppressed,thereby enhancing the efficiency of photocatalytic reactions and providing a new solution for sustainable energy utilization.关键词
光催化二氧化碳还原/S型异质结/CeO2/Bi19Br3S27/内置电场Key words
Photocatalytic carbon dioxide reduction/S-scheme heterojunction/CeO2/Bi19Br3S27/Built-in electric field分类
化学化工引用本文复制引用
李朋,崔元映,王中辽,Graham Dawson,邵春风,代凯..CeO2/Bi19Br3S27 S型异质结的高效界面电荷转移用于增强光催化CO2还原[J].物理化学学报,2025,41(6):103-114,12.基金项目
The project was supported by the National Natural Science Foundation of China(22278169),the Excellent Scientific Research and Innovation Team of Education Department of Anhui Province(2022AH010028)and Anhui Provincial Quality Engineering Project(2022sx134).国家自然科学基金(22278169),安徽省教育厅优秀科研创新团队(2022AH010028)和安徽省质量工程项目(2022sx134)资助 （22278169）
