All-inorganic TiO_(2)/Cs_(2)AgBiBr_(6) composite as highly efficient photocatalyst under visible light irradiation

作     者：Jianzhong Ma Lu Wen Qianqian Fan Siying Wei Xueyun Hu Fan Yang Jianzhong Ma;Lu Wen;Qianqian Fan;Siying Wei;Xueyun Hu;Fan Yang

作者机构：College of Bioresources Chemical and Materials EngineeringShaanxi University of Science and TechnologyXi’an 710021China College of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi’an 710021China Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry(Ministry of Education)Shaanxi University of Science and TechnologyXi’an 710021China Xi’an Key Laboratory of Green Chemicals and Functional MaterialsShaanxi University of Science and TechnologyXi’an 710021China College of Environmental Science and EngineeringShaanxi University of Science and TechnologyXi’an 710021China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2023年第17卷第12期

页      面：1925-1936页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：the financial support from National Natural Science Foundation of China(Grant Nos.52073164,52103088) Innovation Capability Support Program of Shaanxi(Program No.2021TD-16) 

主　　题：Cs_(2)AgBiBr_(6)nanocrystals visible-light photocatalyst Cs_(2)AgBiBr_(6) TiO_(2)heterojunction 

摘      要：In recent years, limited photocatalysis efficiency and wide band gap have hindered the application of TiO_(2) in the field of photocatalysis. A leading star in photocatalysis has been revealed as lead-free Cs_(2)AgBiBr_(6) double halide perovskite nanocrystals, owing to its strong visible light absorption and tunable band gap. In this work, this photocatalytic process was facilitated by a unique TiO_(2)/Cs_(2)AgBiBr_(6) composite, which was identified as an S-cheme heterojunction. TiO_(2)/Cs_(2)AgBiBr_(6) composite was investigated for its structure and photocatalytic behavior. The results showed that when the perovskite dosage is 40%, the photocatalytic rate of TiO_(2) could be boosted to 0.1369 min^(-1). This paper discusses and proposes the band gap matching, carrier separation, and photocatalytic mechanism of TiO_(2)/Cs_(2)AgBiBr_(6) composites, which will facilitate the generation of new ideas for improving TiO_(2)’s photocatalytic performance.