1D Bi_(2)S_(3) nanorods modified 2D BiOI nanoplates for highly efficient photocatalytic activity:Pivotal roles of oxygen vacancies and Z-scheme heterojunction  

作　　者：Peng Ju Yu Zhang Lei Hao Jiazhen Cao Xiaofan Zhai Kunpeng Dou Fenghua Jiang Chengjun Sun 

机构地区：[1]Key Laboratory of Marine Eco-Environmental Science and Technology,Marine Bioresource and Environment Research Center,First Institute of Oceanography,Ministry of Natural Resources,Qingdao 266061,China [2]Laboratory of Marine Drugs and Bioproducts,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China [3]CAS Key Laboratory of Marine Environmental Corrosion and Bio-fouling,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [4]Department of Chemical Product Engineering,College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan 030024,China [5]College of Information Science and Engineering,Ocean University of China,Qingdao 266100,China

出　　处：《Journal of Materials Science & Technology》2023年第11期45-59,共15页材料科学技术（英文版）

基　　金：financially supported by the Basic Scientific Fund for National Public Research Institutes of China(Nos.2020S02 and 2019Y03);the National Natural Science Foundation of China(No.51702328);the Key Research and Development Program of Shandong Province(Major Scientific and Technological Innovation Project)(No.2019JZZY020711);the Young Elite Scientists Sponsorship Program by CAST(No.YESS20210201).

摘　　要：In this study,a novel Bi_(2)S_(3)/BiOI Z-scheme photocatalyst with 3D porous hierarchical network-like heterostructure(BSBI NHs)and rich oxygen vacancies(OVs)was fabricated by a facile ion exchange method followed by the in-situ growth process.A possible formation mechanism of BSBI NHs was studied,showing the self-assembled process of in-situ interwoven growth of 1D Bi_(2)S_(3) nanorods(NRs)on the surface of 2D BiOI disk-like nanoplates(NPs),which followed the Ostwald ripening and epitaxial growth.The modification of BiOI NPs by Bi_(2)S_(3) NRs brought about the formation of Z-scheme heterojunction and massive OVs,which improved the visible-light response property and promoted the separation of photoexcited charge carriers of BSBI NHs.BSBI NHs exhibited a significantly enhanced photocatalytic activity compared with Bi_(2)S_(3) and BiOI,and BSBI-1 can remove almost all bacteria and Rhodamine B(RhB)after 60 min visible light illumination.In addition,the photocatalytic mechanism was studied and speculated based on the tests of active species capture,electron spin resonance(ESR),and density functional theory(DFT)simulation calculation,proving the primary roles of·OH,·O_(2)^(-)and h^(+)during the photocatalytic reaction.This work provides new insights into the design and exploitation of novel heterojunctions with highly efficient photocatalytic performances for environmental remediation applications.

关 键 词：ANTIFOULING BIOFOULING BiOI Photocatalysis Bi_(2)S_(3) 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]