Enhanced activation of peroxydisulfate by strontium modified BiFeO3 perovskite for ciprofloxacin degradation

作     者：Caicai Wang Shengwang Gao Jianchao Zhu Xunfeng Xia Mingxin Wang Yanna Xiong Caicai Wang;Shengwang Gao;Jianchao Zhu;Xunfeng Xia;Mingxin Wang;Yanna Xiong

作者机构：State Key Laboratory of Enuironmental Criteria and Risk AssessmentChinese Research Academy of Environmental SciencesBeijing 100012China State Environmental Protection Key Laboratory of Simulation and Control of Groundwater PollutionChinese Research Academy of Environmental SciencesBeijing 100012China School of Environmental and Safety EngineeringChangzhou UniversityChangzhou 213164China Solid Waste and Chemicals Management CenterMinistry of Ecology and EnvironmentBeijing 100029China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2021年第33卷第1期

页      面：249-259页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：the National Key Research and Development Program of China(Nos.2018YFD1100505 2019YFD1100201) 

主　　题：Perovskite Peroxydisulfate Heterogeneous catalysis Singlet oxygen Ciprofloxacin 

摘      要：A series of Sr-doped BiFeO3 perovskites(Bi1-xSrxFeO3,BSFO)fabricated via sol-gel method was applied as peroxydisulfate(PDS)activator for ciprofloxacin(CIP)*** technologies were used to characterize the morphology and physicochemical features of prepared BSFO samples and the results indicated that Sr was successfully inserted into the perovskites *** catalytic performance of BiFeO3 was significantly boosted by strontium ***,Bi0.9Sr0.1FeO3(0.1 BSFO)exhibited the highest catalytic performance for PDS activation to remove CIP,where 95%of CIP(10 mg/L)could be degraded with the addition of 1 g/L 0.1 BSFO and 1 mmol/L PDS within 60 ***,0.1 BSFO displayed high reusability and stability with lower metal *** acidic condition was preferred to neutral and alkaline conditions in 0.1 BSFO/PDS *** boosted catalytic performance can be interpreted as the lower oxidation state of Fe and the existence of affluent oxygen vacancies generated by Sr doping,that induced the formation of singlet oxygen(^1O_(2))which was confirmed as the dominant reactive species by radical scavenging studies and electron spin resonance(ESR)*** catalytic oxidation mechanism related to major ^1O_(2) and minor free radicals was *** study opens a new avenue to develop effective A-site modified perovskite and expands their application for PDS activation in wastewater remediation.