A hierarchical Bi-MOF-derived BiOBr/Mn_(0.2)Cd_(0.8)S S-scheme for visible-light-driven photocatalytic CO_(2) reduction
作者机构：Laboratory of Green and Precise Synthetic Chemistry and ApplicationsMinistry of EducationHuaibei Normal UniversityHuaibei 235000China State Key Laboratory of Fine ChemicalsDalian University of TechnologyDalian 116024China
出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)
年 卷 期：2023年第156卷第25期
页 面：64-71页
核心收录：
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 081705[工学-工业催化] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：supported by the National Natural Science Foundation of China(Nos.22278169 and 51973078) the Excellent scientific research and innovation team of Education Department of Anhui Province(No.2022AH010028) the Major projects of Education Department of Anhui Province(No.2022AH040068) the Key Foundation of Educational Commission of Anhui Province(No.2022AH050396).
主 题：Mn0.2Cd0.8S Bi-MOF CO_(2)reduction S-scheme heterojunction
摘 要：S-scheme heterojunctions have promising applications in photocatalytic CO_(2) reduction due to their unique structure and interfacial interactions,but improving their carrier separation efficiency and CO_(2) adsorption capacity remains a challenge.In this work,highly dispersed MOF-BiOBr/Mn_(0.2) Cd_(0.8) S(MOF-BiOBr/MCS)S-scheme heterojunctions with high photocatalytic CO_(2) reduction performance were constructed.The intimate contact between the MCS nano-spheres and the nanosheet-assembled MOF-BiOBr rods,driven by the internal electric field,accelerates the charge transfer along the S-scheme pathway.Moreover,the high specific surface area of MOFs is preserved to provide abundant active sites for reaction/adsorption.The formation of MOF-BiOBr/MCS S-scheme heterojunction is confirmed by theoretical calculations.The optimum MOF-BiOBr/MCS shows excellent activity in CO_(2) reduction,affording a high CO evolution rate of 60.59µmol h^(−1) g^(−1).The present work can inspire the exploration for the construction of effective heterostructure photocatalysts for photoreduction CO_(2).
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