Covalently bonded ternary photocatalyst comprising MoSe_(2)/black phosphorus nanosheet/graphitic carbon nitride for efficient moxifloxacin degradation  

作　　者：Yuhao Ma Yufei Zhou Mingchuan Yu Cheng Fang Shaoxia Yang Junfeng Niu 

机构地区：[1]College of Environmental Science and Engineering,North China Electric Power University,Beijing 102206,China [2]College of Water Conservancy and Hydropower Engineering,North China Electric Power University,Beijing 102206,China [3]Global Centre for Environmental Remediation(GCER),University of Newcastle,Callaghan,NSW 2308,Australia

出　　处：《Chinese Chemical Letters》2024年第9期356-359,共4页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.52100076);the Fundamental Research Funds for the Central Universities(No.2023MS064)。

摘　　要：Covalently bonded bridging between different semiconductors is a remarkable approach to improve the transfer of charge carriers at interfaces.In this study,we designed a ternary heterojunction(MBG)combining of molybdenum diselenide(Mo Se_(2)),black phosphorus nanosheets(Bpn)and graphitic carbon nitride(GCN).Among this MBG of Mo Se_(2)/Bpn/GCN,(i)the covalently bonded bridging effect between Bpn/GCN facilitates directional charge carrier transfer,meanwhile(ii)a Z-scheme heterojunction is formed between Mo Se_(2)/GCN to enhance the separation of photogenerated carriers.Furthermore,(iii)this composite exhibits an increased absorption for visible light.Using this MBG,photocatalytic degradation of over 98%of moxifloxacin is achieved within 20 min,with O_(2)·-confirmed as the primary photocatalytic active species.These findings provide novel insights into the construction of efficient heterojunction by covalently bonded bridging.

关 键 词：Ternary heterojunction Black phosphorus nanosheets Covalent bond Photocatalytic degradation Graphitic carbon nitride 

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]