Efficient removal of tetracycline hydrochloride through novel Fe/BiOBr/Bi_(2)WO_(6) photocatalyst prepared by dual-strategy under visible-light irradiation  

作　　者：Guanlong Yu Kai Yang Yi Yang Yifu Li Qifang Sun Peiyuan Li Wenming Wang Fengming Song Tao Ling Xuejun Peng Zhi Yu Shiquan Sun 

机构地区：[1]School of Hydraulic and Environmental Engineering,Changsha University of Science&Technology,Changsha 410114,China [2]Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province,Changsha 410114,China [3]Hunan Pilot Yanghu Reclaimed Water Co.,Ltd.,Changsha 410208,China [4]China Railway Wuju Group the First Engineering Co.,Ltd.,Changsha 410117,China

出　　处：《Journal of Environmental Sciences》2024年第4期46-61,共16页环境科学学报（英文版）

基　　金：supported by the Hunan Provincial Natural Science Foundation of China(No.2021JJ30728 and 2019JJ50672);the Scientific Research Projects of Ecology and Environment Department of Hunan(No.HBKT-2021012);the Water Conservancy Science and Technology Project of Hunan Province(Nos.XSKJ2022068-03 and XSKJ2019081-46)are highly appreciated。

摘　　要：It is important to investigate whether combining two modification strategies has a synergistic effect on the activity of photocatalysts.In this manuscript,Fe-doped BiOBr/Bi_(2)WO_(6) heterojunctions were synthesized by a one-pot solvothermal method,and excellent photocatalytic performance was obtained for the degradation of tetracycline hydrochloride(TCH)in water without the addition of surfactant.Combining experiments and characterization,the synergistic effect between Fe ion doping and the BiOBr/Bi_(2)WO_(6) heterojunction was elucidated.The Fe/BiOBr/Bi_(2)WO_(6) composite photocatalyst had a beneficial void structure,enhanced visible light response,and could inhibit the recombination of photogenerated support well,which improved the photocatalytic activity.The presented experiments demonstrate that Fe/BiOBr/Bi_(2)WO_(6) removes 97% of TCH from aqueous solution,while pure BiOBr and Bi_(2)WO_(6) only remove 56% and 65% of TCH,respectively.Finally,the separation and transfer mechanisms of photoexcited carriers were determined in conjunction with the experimental results.This study provides a new direction for the design of efficient photocatalysts through the use of a dual co-modification strategy.

关 键 词：BiOBr/Bi_(2)WO_(6) FE-DOPING Dual strategy Tetracycline hydrochloride PHOTODEGRADATION 

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]