Controllable Synthesis,Polar Behavior and Photoelectric Properties of BiOCl Microplates  

作　　者：LI Li-Xin CHEN Chen LI Zi-Hao WANG Fei-Fei LIU Yun YI Zhi-Guo 李立新;陈晨;黎梓浩;王飞飞;刘芸;易志国(Key Laboratory of Optoelectronic Material and Device,Department of Physics,Shanghai Normal University,Shanghai 200444,China;State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201800,China;Research School of Chemistry,The Australian National University,Canberra,ACT 2600,Australia)

机构地区：[1]Key Laboratory of Optoelectronic Material and Device,Department of Physics,Shanghai Normal University,Shanghai 200444,China [2]State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201800,China [3]Research School of Chemistry,The Australian National University,Canberra,ACT 2600,Australia

出　　处：《Chinese Journal of Structural Chemistry》2022年第3期77-84,I0009,共9页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China (Nos. 51872311, 51902331 and 11974250);the Shanghai International Science and Technology Cooperation Fund Project (No. 18520723200);the Science and Technology Commission of Shanghai Municipality (Nos. 19070502800 and 19ZR1464900);the Frontier Science Key Project of the Chinese Academy of Sciences (QYZDB-SSW-JSC027)

摘　　要：Bismuth oxychloride(BiOCl)square microplates were prepared via a facile hydrothermal method.The X-ray diffraction patterns of the samples reveal a tetragonal BiOCl phase,and the scanning electron microscopy images show plate-like structures with large lateral size of 3~6μm and thickness in the range of 100~300 nm.The effects of surfactant,reaction temperature and duration on the morphology of BiOCl powders are systematically in-vestigated.The polar behavior of a BiOCl single-crystalline microplate is examined by using piezoresponse force microscopy evidenced over 80 pm displacement under 40 V bias voltage.In addition,the photoelectric performance of the BiOCl microplates is evaluated by using electrochemical workstation with three-electrode system,and large photocurrent densities(over 0.5μA/cm^(2))and fast photoresponse(0.7~1.1 s)are detected by applying both 365 nm monochromatic light and sunlight illumination.The surface potential changes of BiOCl microplate under different light condition,characterized by in-situ Kelvin probe force microscopy,further verify the separation ability of the photo-induced charge carriers.These findings would be beneficial for further design photocatalytic and piezocatalytic materials.

关 键 词：bismuth oxychloride PHOTOELECTRIC MICROPLATE hydrothermal method 

分 类 号：TQ135.32[化学工程—无机化工] TQ426