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 3～6 μm 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 0.5 μA/cm2)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 piezocataly-tic materials.

LI Li-Xin;CHEN Chen;LI Zi-Hao;WANG Fei-Fei;LIU Yun;YI Zhi-Guo

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

结构化学

[1]LI Li-Xin;CHEN Chen;LI Zi-Hao;WANG Fei-Fei;LIU Yun;YI Zhi-Guo-.Controllable Synthesis,Polar Behavior and Photoelectric Properties of BiOCl Microplates)[J].结构化学,2022(03):77-84

Microplates,piezoresponse,piezocataly

Controllable,Synthesis,Polar,Behavior,Photoelectric,Properties,BiOCl,Bismuth,oxychloride,square,microplates,were,prepared,via,facile,hydrothermal,method,ray,diffraction,patterns,samples,reveal,tetragonal,phase,scanning,electron,microscopy,images,show,like,structures,large,lateral,size,thickness,range,effects,surfactant,reaction,temperature,duration,morphology,powders,systematically,vestigated,polar,behavior,single,crystalline,examined,by,using,force,evidenced,over,pm,displacement,under,bias,voltage,In,addition,photoelectric,performance,evaluated,electrochemical,workstation,three,electrode,photocurrent,densities,fast,photoresponse,detected,applying,both,monochromatic,sunlight,illumination,surface,potential,changes,different,condition,characterized,situ,Kelvin,probe,further,verify,separation,ability,induced,charge,carriers,These,findings,would,beneficial,design,photocatalytic,materials

0.655612