钼酸铋光催化剂的结构缺陷调控  

Structural Defects Regulation of Bismuth Molybdate Photocatalyst

作　　者：赵依凡 毛琦云 翟晓雅 张国英 Yifan Zhao;Qiyun Mao;Xiaoya Zhai;Guoying Zhang(Tianjin Key Laboratory of Structure and Performance for Functional Molecules,College of Chemistry,Tianjin Normal University,Tianjin 300387,China;Key Laboratory of Molecular and Nano Probes,Ministry of Education,Shandong Normal University,Jinan 250014,China;Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,China)

机构地区：[1]天津师范大学化学学院,天津市功能分子结构与性能重点实验室,天津300387 [2]山东师范大学分子与纳米探针教育部重点实验室,济南250014 [3]南开大学先进能源材料化学教育部重点实验室,天津300071

出　　处：《化学进展》2021年第8期1331-1343,共13页Progress in Chemistry

基　　金：山东师范大学分子与纳米探针教育部重点实验室开放基金(No.2018KLMNP05);南开大学先进能源材料化学教育部重点实验室开放基金和天津市研究生科研创新项目(No.2020YJSS049)资助~~

摘　　要：钼酸铋(Bi_(2)MoO_(6))作为一种新型层状光催化材料,具有成本低廉、清洁高效、带隙较窄和可见光响应等优点,在降解水体污染物、净化空气、抑菌、光解水、二氧化碳还原及固氮等领域具有广泛的应用前景,是一种极具发展潜力的Bi(Ⅲ)基半导体光催化剂。然而该材料在实际应用中还存在太阳光吸收效率较低、光生载流子复合速率较快等亟待解决的瓶颈问题。针对上述科学问题,对Bi_(2)MoO_(6)光催化剂进行结构缺陷调控已证明是行之有效的解决策略,本文系统阐述了近年来Bi_(2)MoO_(6)晶体结构缺陷工程的研究进展,主要包括各类元素掺杂、氧空位引入以及二者的伴生协同作用等,分别从制备方法和催化性能改善等角度对Bi_(2)MoO_(6)的缺陷研究和发展动态进行了归纳,并对其在相关应用领域的构-效关系及作用机制进行了深入探讨和总结。最后,分析了缺陷型Bi_(2)MoO_(6)光催化剂目前所存在的不足,并对未来的发展方向和前景进行了展望。As a novel type of Bi(Ⅲ)-based semiconductor photocatalyst,bismuth molybdate(Bi_(2)MoO_(6))possesses the advantages of layered structure,low cost,cleanness and efficiency,narrow band gap and visible light response,etc.Resultantly,it exhibits widely potential applications in various photocatalytic areas such as degradation of water pollutants,air purification,antibacterial,water splitting,carbon dioxide reduction and nitrogen fixation.However,there are still two main bottleneck problems which would restrict the practical applications of Bi_(2)MoO_(6)and needs to be addressed urgently.One is the low absorption efficiency for solar energy and the other is the fast recombination rate of photogenerated electron-hole pairs.Introduction and regulation of structure defects in Bi_(2)MoO_(6)have been proved to be effective strategies to resolve the above problems.In the paper,the research progress of Bi_(2)MoO_(6)defect engineering in recent years is comprehensively reviewed,including elemental doping,oxygen vacancy,synergistic effects,etc.The different methods to construct defects in Bi_(2)MoO_(6)and the corresponding photocatalytic properties are extensively summarized.Also,the structure-activity relationship and action mechanism of the structural defects in different research fields are in-depth discussed and concluded.Finally,the present shortcomings of defective Bi_(2)MoO_(6)photocatalyst are analyzed and the development direction and prospects in future are prospected.

关 键 词：钼酸铋 缺陷调控 离子掺杂 氧空位 协同效应 光催化 

分 类 号：O643.36[理学—物理化学] O644.11[理学—化学]