Non-radical activation of persulfate with Bi_(2)O_(3)/BiO_(1.3)I_(0.4)for efficient degradation of propranolol under visible light  

作　　者：Yuehua Deng Qianqian Che Yani Li Jiating Luo Xiang Gao Yan He Yiling Liu Tong Liu Xiaolong Zhao Xiaobin Hu Wei Zhao 

机构地区：[1]College of Geology and Environment,Xi’an University of Science and Technology,Xi’an 710054,China [2]Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation,Xi’an 710054,China [3]Department of Mechanical Engineering,The University of Hong Kong,Hong Kong 999077,China [4]School of Life Science,Huzhou University,Huzhou 313000,China [5]School of Materials Engineering,Changshu Institute of Technology,Changshu 215500,China

出　　处：《Journal of Environmental Sciences》2024年第8期57-68,共12页环境科学学报（英文版）

基　　金：supported by the Basic Research Plan of Natural Science in Shaanxi Province-General Project(Nos.2023-JC-QN-0294,2023-JC-YB-094,2020JQ-740);the Postdoctoral Research Foundation of China(No.2020M673440);the National Natural Science Foundation of China(No.22303064);the Education Department Fund in Shaanxi Province(No.2021JK0763)。

摘　　要：Non-radical activation of persulfate(PS)by photocatalysts is an effective approach for removing organic pollutants from aqueous environments.In this study,a novel Bi_(2)O_(3)/BiO_(1.3)I_(0.4)heterojunction was synthesized using a facile solvothermal approach and used for the first time for non-radical activation of PS to degrade propranolol(PRO)in the presence of visible light.The findings found that the degradation rate of PRO in the Bi_(2)O_(3)/BiO_(1.3)I_(0.4)/PS system was significantly increased from 19%to more than 90%within 90 min compared to the Bi_(2)O_(3)/BiO_(1.3)I_(0.4)system.This indicated that the composite system exerted an excellent synergistic effect between the photocatalyst and the persulfate-based oxygenation.Quenching tests and electron paramagnetic resonance demonstrated that the non-radical pathway with singlet oxygen as the active species played a major role in the photocatalytic process.The existence of photo-generated holes during the reaction could also be directly involved in the oxidation of pollutants.Meanwhile,a possible PRO degradation pathway was also proposed.Furthermore,the impacts of pH,humic acid and common anions on the PRO degradation by the Bi_(2)O_(3)/BiO_(1.3)I_(0.4)/PS were explored,and the system’s stability and reusability were also studied.This study exhibits a highly productive catalyst for PS activation via a non-radical pathway and provides a new idea for the degradation of PRO.

关 键 词：Iodine deficiency HETEROJUNCTION Persulfate(PS) Propranolol(PRO) Photocatalytic degradation 

分 类 号：X703[环境科学与工程—环境工程]