S-scheme photocatalyst Bi2O3/TiO2 nanofiber with improved photocatalytic performance  

作　　者：Rongan He Haijuan Liu Huimin Liu Difa Xu Liuyang Zhang 

机构地区：[1]Hunan Province Key Laboratory of Applied Environmental Photocatalysis,Changsha University,Changsha 410022,China [2]State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China

出　　处：《Journal of Materials Science & Technology》2020年第17期145-151,共7页材料科学技术（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51872220 and 21871030);the Natural Science Foundation of Hunan Province of China(Nos.2018JJ2456 and 2018JJ2457);the Scientific Research Fund of Hunan Provincial Education Department of China(No.18A370)。

摘　　要：In this study,a hierarchical Bi2O3/TiO2 fibrous composite was in-situ fabricated on an electrospun TiO2 nanofiber at ambient temperature.In the Bi2O3/TiO2 composite,S-scheme electron migration occurred between Bi2O3 and TiO2.In the photocatalytic degradation of phenol under simulated sunlight,the asprepared Bi2O3/TiO2 nanofibers considerably outperformed Bi2O3 nanoparticles and TiO2 nanofibers.This improvement is contributed by maintaining and effectively utilizing the useful carriers and consuming the useless holes and electrons,realized by the S-scheme heterojunction and hierarchical structure.This study also provides an alternative design fashion for photocatalysts.

关 键 词：ELECTROSPINNING BISMUTH FIBER In-situ synthesis 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] X505[环境科学与工程—环境工程]