Regulating the Electronic Structure of Fe^(3+)‑Doped BiOCl_(x)I_(1-x)Solid Solution by an Amidoxime‑Functionalized Fibrous Support for Efficient Photocatalysis  

作　　者：Zhenbang Han Mingze Lv Xianbing Shi Guobin Li Jin Zhao Xiaoming Zhao 

机构地区：[1]School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China [2]Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage,Tianjin 300387,China

出　　处：《Advanced Fiber Materials》2023年第1期266-281,共16页先进纤维材料（英文）

基　　金：supported by the National Natural Science Foundation of China(No.52003192;21806121);Special Fund Project for Technology Innovation of Tianjin City(20YDTPJC00920);Natural Science Foundation of Tianjin City(15JCQNJC06300).

摘　　要：BiOX(X=Cl,I,Br)has attracted intensive interest as a photocatalyst for environmental remediation,but its limited pho-tocatalytic activity versus visible light irradiation restricts its practical application.Herein,a Fe^(3+)-doped BiOCl_(x)I_(1-x)solid solution(Fe-BiOCl_(x)I_(1-x))was synthesized in situ on an amidoxime-functionalized fibrous support via a one-pot solvothermal approach.Comprehensive characterization and DFT calculations indicate that the robust chelated interaction between ami-doxime groups and Fe^(3+)greatly boosts the crystal growth of nanosized Fe-BiOCl_(x)I_(1–x)on the fibrous surface,simultaneously tunes its electronic structure for improved light harvesting and oxygen vacancy creation,and enables the fibrous support to act as an electron sink for efficient charge separation.These synergistic qualities result in high photocatalytic activity for the degradation of organic contaminants,which outperforms that obtained for unsupported Fe-BiOCl_(x)I_(1-x)and other fibrous samples by several times.Our findings highlight the importance of functionalized support design for the development of efficient BiOX photocatalysts under visible light irradiation.

关 键 词：Bismuth oxyhalides Fe doping Fiber-based catalyst Photocatalytic degradation 

分 类 号：O643.36[理学—物理化学]