Boosting interfacial S-scheme charge transfer and photocatalytic H_(2)-production activity of 1D/2D WO_(3)/g-C_(3)N_(4)heterojunction by molecular benzene-rings integration  

作　　者：Xiaojie Mo Xiaohan Zhang Biyun Lin Chuangyu Ning Ming Li Hua Liao Zhihong Chen Xin Wang 

机构地区：[1]South China Academy of Advanced Optoelectronics,South China Normal University,Guangzhou 510006,China [2]Institute of Environmental Research at Greater Bay,Key Laboratory for Water Quality and Conservation of the Pearl River Delta,Ministry of Education,Guangzhou University,Guangzhou 510006,China [3]Institute of Academy of Optoelectronics at Zhaoqing South China Normal University,Zhaoqing 526238,China [4]Institute of Solar Energy,Yunnan Normal University,Kunming 650500,China

出　　处：《Journal of Materials Science & Technology》2023年第14期174-184,共11页材料科学技术（英文版）

基　　金：This work was financially supported by National Natural Sci-ence Foundation(No.52000044);the Outstanding Youth Project of Guangdong Natural Science Foundation(No.2021B1515020051);the Natural Science Foundation of Guangdong Province(Nos.2021A1515012610,2019050001);Special Fund Project of Science and Technology Application in Guangdong(No.2017B020240002);National 111 project,Department of Science and Technology of Guangdong(Nos.2019JC01L203,2020B0909030004);Science and Technology Program of Guangzhou(No.202102010418).

摘　　要：A novel benzene-ring engineered 1D/2D WO_(3)/g-C_(3)N_(4)S-scheme photocatalyst(BCNW)was rationally de-signed and successfully synthesized by the electrostatic self-assembly method.Experimental and Density Functional Theory results reveal that the integration of molecular benzene-ring in the framework of g-C_(3)N_(4)can not only narrow its bandgap and accelerate charge separation by forming a mid-state at the top of its valence band but more importantly open up a new additional bridge for speeding up the interfacial S-scheme charge transfer in BCNW.Benefitting from those multiple positive effects of benzene-ring inte-gration,as expected,BCNW S-scheme photocatalysts show superior photocatalytic H_(2)-production activity and reach 2971μmol h^(-1)g^(-1)under visible-light illumination,which is 3.35 times WO_(3)/g-C_(3)N_(4)S-scheme photocatalyst without benzene-ring integration.This work supplies an innovative strategy for the design of a high-efficiency S-scheme photocatalytic system by constructing a facile and additional molecular charge transfer channel at the interface.

关 键 词：S-scheme heterojunction Benzene-ring Molecular charge transfer channel Photocatalytic H_(2)-production 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学] O644.1[理学—化学]