物理化学学报2025，Vol.41Issue(6)：78-90,13.DOI:10.1016/j.actphy.2025.100055
氮掺杂显著提升BiOBr光催化还原CO2性能研究
Insights into the greatly improved catalytic performance of N-doped BiOBr for CO2 photoreduction
摘要
Abstract
Photocatalytic carbon dioxide(CO2)reduction represents a hopeful approach to addressing global energy and environmental issues.The quest for catalysts that demonstrate both high activity and selectivity for CO2 conversion has attracted significant attention.In this study,ultrathin N-doped BiOBr was synthesized using a simple straightforward method.Systematic experimental results indicated that N-doping reduced the thickness of the BiOBr nanosheets and increased their specific surface area.Moreover,the efficiency of photogenerated charge carrier migration and the CO2 adsorption capacity were significantly enhanced,contributing to improved CO2 photoreduction performance.Experimental results showed that the 2N-BiOBr exhibited the best catalytic performance,with a CO evolution rate of 18.28 μmol·g-1·h-1 and nearly 100%CO selectivity in water,which was three times higher than that of pure BiOBr.The potential photocatalytic mechanism was investigated using in situ FTIR analysis and DFT simulations.Mechanistic studies revealed that N atoms replaced O atoms as adsorption centers,enhancing the strong adsorption selectivity towards CO2 over O―H in BiOBr and facilitating the formation of key reaction intermediates.This study provides new perspectives on the creation and development of effective photocatalytic materials,offering theoretical support for the application of photocatalytic technology in energy and environmental science.关键词
N掺杂/CO2吸附/超薄BiOBr/光催化剂/CO2还原Key words
N-doping/CO2 adsorption/Ultrathin BiOBr/Photocatalyst/CO2 reduction分类
化学化工引用本文复制引用
宋相海,刘晓颖,任智祥,刘想,汪梅,吴元锋,周伟强,朱志,霍鹏伟..氮掺杂显著提升BiOBr光催化还原CO2性能研究[J].物理化学学报,2025,41(6):78-90,13.基金项目
The project was supported by the National Natural Science Foundation of China(22108102,22078131),the Fundamental Research Funds for the Universities of Henan Province(NSFRF240609),the GHfund B(202302026857),the Science and Technology Planning Social Development Project of Zhenjiang City(SH2023102),the International Innovation Center for Forest Chemicals and Materials of Nanjing Forestry.国家自然科学基金(22108102,22078131),河南省属高校基本科研业务费专项资金(NSFRF240609),GHfund B(202302026857),镇江市社会发展指导性科技计划项目(SH2023102),南京林产化学与材料国际创新高地资助 （22108102,22078131）
