2D/2D BiOIO_(3)/g-C_(3)N_(4) S-scheme hybrid heterojunction with face-to-face interfacial contact for effective photocatalytic H_(2) production and norfloxacin degradation  

作　　者：Dong-Eun Lee Satyanarayana Moru KasalaPrabhakar Reddy Wan-Kuen Jo Surendar Tonda 

机构地区：[1]School of Architecture,Civil,Environmental and Energy Engineering,Kyungpook National University,80 Daehak-ro,Buk-gu,Daegu 41566,Republic of Korea [2]School of Advanced Sciences,Vellore Institute of Technology-Andhra Pradesh(VIT-AP University),Amaravati,Andhra Pradesh 522237,India [3]Department of Chemistry and Biochemistry,University of South Carolina,631 Sumter Street,Columbia,SC 29208,United States

出　　处：《Journal of Materials Science & Technology》2023年第17期19-30,共12页材料科学技术（英文版）

基　　金：supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(No.NRF-2018R1A5A1025137).

摘　　要：A two-dimensional(2D)/2D hybrid heterojunction with face-to-face interfacial assembly is a desirable dimensionality design with significant potential for various photocatalytic applications due to the large interfacial contact area,which facilitates charge migration and separation.Herein,we developed an ef-ficient 2D/2D hybrid heterojunction consisting of BiOIO 3 nanoplates(BIO)and g-C_(3)N_(4) nanosheets(CN)using a simple but effective in situ growth method for photocatalytic aqueous antibiotic degradation and H_(2) generation.The face-to-face interfacial assembly of the BIO and CN components in the BIO/CN hy-brid heterojunction was verified using electron microscopy.Remarkably,the BIO/CN hybrid heterojunc-tion outperformed both the BIO and CN counterparts in terms of norfloxacin degradation and H_(2) gen-eration under simulated solar light irradiation.Moreover,the photocatalytic performance of the hybrid catalyst remained nearly unchanged throughout five consecutive test runs.The exceptional performance and stability of the hybrid catalyst are attributable to its extended optical absorption range,large interfa-cial contact area provided by the face-to-face assembly in the 2D/2D hybrid configuration,and enhanced photoexcited charge separation efficiency and redox power of the separated charges,which are supported by an efficient S-scheme charge transfer mechanism.This study illuminates the rational construction of novel 2D/2D S-scheme hybrid heterojunction photocatalysts with practical applications in environmental remediation and sustainable energy generation.

关 键 词：g-C_(3)N_(4) BiOIO_(3) Face-to-face interface 2D/2D heterojunction S-scheme charge transfer Solar energy conversion 

分 类 号：X703[环境科学与工程—环境工程] TQ426[化学工程]