燃料化学学报（中英文）2026，Vol.54Issue(4)：140-150,11.DOI:10.1016/S1872-5813(25)60629-3
Z型异质结Ag/Bi2MoO6/BiOBr复合薄膜光催化CO2还原性能与增强机制研究
Enhancing photocatalytic CO2 reduction with Z-scheme heterojunction Ag/Bi2MoO6/BiOBr composite films:Synthesis and mechanistic insights
摘要
Abstract
This study presents the successful synthesis of a novel Z-scheme heterojunction composite film consisting of Ag/Bi2MoO6/BiOBr through electrochemical processes and ion-exchange techniques,followed by the photodeposition of noble metal silver(Ag)onto the composite structure.The catalytic efficiency of semiconductor photocatalysts is greatly improved by utilizing the localized surface plasmon resonance(LSPR)effect observed in Ag nanoparticles(NPs).Furthermore,the noble metal Ag serves as an intermediary bridge facilitating charge transfer between Bi2MoO6 and BiOBr,while the formation of a Schottky barrier effectively inhibits the recombination of photo-generated electron-hole pairs.As a result,the Ag-deposited Bi2MoO6/BiOBr film exhibits superior photocatalytic performance in the reduction of CO2 compared to its unmodified counterpart.Our experimental results indicate a non-linear relationship between Ag deposition and the efficiency of photocatalytic CO2 reduction to CO,characterized by an initial increase in efficiency followed by a decline.The optimized 1.5％-Ag/Bi2MoO6/BiOBr film demonstrates exceptional photocatalytic activity,attaining a CO production rate of 13.65 μmol/(g h).This research explores the fundamental mechanisms that lead to improved photocatalytic CO2 reduction capabilities of the Ag/Bi2MoO6/BiOBr film.Our research offers important perspectives for the thoughtful design and production of highly efficient photocatalysts,which are essential for advancing sustainable energy solutions.关键词
光催化CO2还原/银纳米粒子/Bi2MoO6/BiOBr复合薄膜/Z型异质结/原位合成Key words
photocatalytic CO2 reduction/Ag NPs/Bi2MoO6/BiOBr composite film/Z-scheme heterojunction/in situ synthesis分类
化学化工引用本文复制引用
李娇,赵静,王一鸣,赵文海,柴艺卓,张小超..Z型异质结Ag/Bi2MoO6/BiOBr复合薄膜光催化CO2还原性能与增强机制研究[J].燃料化学学报（中英文）,2026,54(4):140-150,11.基金项目
Supported by the National Natural Science Foundation of China(21978196),Natural Science Foundation of Shanxi Province(201801D211008,202403021211018),Shanxi Provincial Education Department(S202413597023)and Jincheng High Efficiency Conversion and Utilization Technology Innovation Center of CO2 Energy and Biomass Energy. （21978196）
