CoFe_(2)O_(4)nanoparticles anchored on waste eggshell for catalytic oxidation of florfenicol via activating peroxymonosulfate  

作　　者：Yingjie Gao Ying Han Bingrui Liu Jianfeng Gou Dan Feng Xiuwen Cheng 

机构地区：[1]Key Laboratory for Environmental Pollution Prediction and Control,College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China [2]College of Chemistry and Environmental Sciences,Yili Normal University,Yining 835000,China [3]Key Laboratory of Pollutant Chemistry and Environmental Treatment,Yili Normal University,Yining 835000,China

出　　处：《Chinese Chemical Letters》2022年第8期3713-3720,共8页中国化学快报（英文版）

基　　金：kindly funded by National Natural Science Foundation of China(No.51978319);Outstanding Youth Foundation of Gansu Province(No.20JR10RA651);Natural Science Foundation of Gansu Province(No.20JR5RA242 and 20JR10RA635);Natural Science Project of University Research Program of Xinjiang Uygur Autonomous Region(No.XJEDU2017M035)。

摘　　要：Eggshell-loaded CoFe_(2)O_(4) catalyst was synthesized via a convenient hydrothermal method during our work,then the surface morphology and elemental composition of the composites were systematically investigated.Performance of CoFe_(2)O_(4)/eggshell-activated peroxymonosulfate(PMS)system was evaluated by selecting florfenicol(FF)as the model pollutant,and effects of operating parameters and water matrices on the FF removal efficiency in this system were investigated.In addition,main radicals involved in FF degradation were identified by EPR tests and radical quenching experiments,and possible mechanism was proposed.The reduction of toxicity during FF degradation was confirmed,and in combination with HP-LC tests,it was found that dehalogenation and defluorination were effectively carried out during FF degradation.In addition,the prepared CoFe_(2)O_(4)polyvinylidene fluoride(PVDF)membrane effectively improved the stability of the material and reduced the precipitation of metals.

关 键 词：CoFe_(2)O_(4)/eggshell PEROXYMONOSULFATE FLORFENICOL PVDF membrane 

分 类 号：O643.36[理学—物理化学] X703[理学—化学]