Controllable fabrication of Ag/ZnO/g-C_(3)N_(4)nanofiber heterojunctions for enhanced photocatalytic water disinfection  

作　　者：Lian Feng Penghao Zhang Yuan Li Fangxin Ye Yanze Ma Gongtian He Mingyu Lv Tian Zhang 

机构地区：[1]School of Chemistry,Chemical Engineering and Life Science,Wuhan University of Technology,Wuhan 430070,China [2]Wuhan University of Technology Sanya Science and Education Innovation Park,Sanya 572024,China [3]State Key Laboratory of Silicate Materials for Architectures,Wuhan University of Technology,Wuhan 430070,China

出　　处：《Frontiers of Materials Science》2025年第1期1-15,共15页材料学前沿(英文版)

基　　金：financial support by Sanya Science and Education Innovation Park of Wuhan University of Technology Open Fund(2022KF0012);T.Z.acknowledges the financial support of Scientific Research Project of Sanya Yazhouwan Science and Technology City Administration Bureau(SKJC-2020-01-004);This work was also funded by the Wuhan Natural Science Foundation(2024040801020262).

摘　　要：With the accelerated development of urbanization,it is urgent to develop new green and effective fungicides for water disinfection,which can effectively sterilize without causing bacterial drug resistance and environmental burden.In this work,the new ternary nanofiber(NF)heterojunctions,Ag/ZnO/g-C_(3)N_(4)(Ag/ZCN),with high specific surface area were controllably fabricated through the photodeposition of different amounts of Ag quantum dots on electrospun ZCN NFs.Ag/ZCN with 6 wt.%Ag was found to exhibit the highest antibacterial activity superior to that of ZCN and ZnO NFs,which completely killed E.coli or S.aureus within 30 min under solar light.Moreover,it maintained high stability during four consecutive photocatalytic cycles.The photocatalytic Z-scheme charge transportation mechanism of Ag/ZCN was confirmed through structure characterization and free radical capture experiments.It was verified that the active oxygen substances such as∙OH,^(1)O_(2),and a certain amount of∙O_(2)^(−)were mainly produced in the photocatalytic sterilization process.Therefore,the Z-scheme NF heterojunction Ag/ZCN has great application potential in actual environmental water disinfection.

关 键 词：carbon nitride zinc oxide electrospinning photocatalytic antibacterial 

分 类 号：O643.3[理学—物理化学] O643.36[理学—化学]