Construction of medium-entropy alloys coupled Z-Scheme heterojunction and its enhanced photocatalytic performance by regulating mechanism of LSPR effect  

作　　者：Jianfei Li Nuotong Zhang Degang Li Yueyun Li Weimin Zhang Zengdian Zhao Shasha Song Yan Liu Luchang Qin Xingliang Bao Bin Zhang Wenxin Dai 

机构地区：[1]School of Chemistry and Chemical Engineering,Shandong University of Technology,Zibo 255000,China [2]Department of Physics and Astronomy,University of North Carolina at Chapel Hill,Chapel Hill,NC 27599-3255,United States [3]Zibo Tengyu Chemical Engineering Co.Ltd.,Zibo 255000,China [4]Research Institute of Photocatalysis,State Key Laboratory of Photocatalysis on Energy and Environment,Fuzhou University,Fuzhou 350108,China

出　　处：《Journal of Materials Science & Technology》2024年第30期32-45,共14页材料科学技术(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.22172092);the PhD Start-up Foundation for Science and Technology(No.420071 and 420093);the Natural Science Foundation of Shandong Province(Nos.ZR2021MB048 and ZR2021MB079);the Development and Application of Cutting-edge Technologies for Comprehensive Utilization of Hydrogen Energy(No.219213).

摘　　要：Optimizing the local surface plasmon resonance(LSPR)effect of non-noble metals through alloying has been crucial for improving its practical application in the field of photocatalysis.Rare studies capture the detail that the change in the electronic structure of metal elements caused by alloying affects plasma carrier concentration and the local surface plasmon resonance effect.Herein,NiCuCoFe medium-entropy alloys(MEAs)nanoclusters were designed and used to modify the Bi_(3)O_(4)Br/CNNs Z-scheme heterojunc-tion.The cocktail effect of MEAs causes the 3d-orbital hybridization of various metal elements,which promotes the release of charge carriers.The higher the carrier concentration,the stronger the LSPR effect of MEAs.In addition,the mechanism of three typical working pathways of the LSPR effect to improve the photocatalytic performance of heterojunction is discussed.And compared with those of Bi_(3)O_(4)Br,CNNs,and Bi_(3)O_(4)Br/CNNs,the rate constant of MEAs-Bi_(3)O_(4)Br/CNNs was 3.26,11.16,and 3.17 times higher during the degradation of norfloxacin,respectively.This study provides a new strategy for understanding the mechanism of LSPR and the rational design of plasmonic coupling architectures for enhanced photocatalysis.

关 键 词：NiCuCoFe medium-entropy alloys LSPR Orbital hybridization Z-scheme heterojunction Photocatalysis 

分 类 号：TG1[金属学及工艺—金属学]