MIL-53(Fe)/polyaniline(PANI)composite was prepared by in situ depositing PANI on the surface of MIL-53(Fe)and their catalytic performances on the simultaneous removal of RhB and Cr(Ⅵ were investi-gated.The elimination efficiency of both RhB and Cr(Ⅵ)reached more than 98％under pH=2 where hydrochloric acid and citric acid were used to adjust the pH.The results indicated that MIL-53(Fe)/PANI revealed an obvious pH response to the degradation of RhB,while citric acid promoted the Cr(Ⅵ)photoreduction.UV-Vis spectra,EIS,and photocurrent response experiments showed that MIL-53(Fe)/PANI had a better light response and carrier migration ability than MIL-53(Fe).The transient absorption spectra also exhibited that the lifetimes of photo-generated carriers were prolonged after the conductive polymer deposition on the MIL-53(Fe)surface.Scavenger experiments demonstrated that the main active species were·O2-and·OH.Combined with activity evaluation results,and the possible photocatalytic mechanism of MIL-53(Fe)/PANI on RhB oxidation and Cr(Ⅵ)reduction was proposed.The addition of con-ductive polymer can effectively improve the light response of the catalyst under acidic conditions,and meanwhile citric acid also provided a new mediation for the synergistic degradation of multiple pollu-tants.Good activity and stability of the catalysts made the scale-up purification of acid water feasible under UV-Vis light.

Wanyuan Wang;Chengxin Wen;Daoyuan Zheng;Chunhu Li;Junjie Bian;Xinbo Wang

Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education,Ocean University of China,Qingdao 266100,China;School of Environmental Science and Engineering,Shandong University,Qingdao 266237,China

中国化学工程学报（英文版）

[1]Wanyuan Wang;Chengxin Wen;Daoyuan Zheng;Chunhu Li;Junjie Bian;Xinbo Wang-.Simultaneous degradation of RhB and reduction of Cr(Ⅵ)by MIL-53(Fe)/Polyaniline(PANI)with the mediation of organic acid)[J].中国化学工程学报（英文版）,2022(02):55-63

Scavenger

Simultaneous,degradation,RhB,by,MIL,Polyaniline,PANI,mediation,organic,polyaniline,composite,was,prepared,situ,depositing,surface,their,performances,simultaneous,removal,were,investi,gated,elimination,efficiency,both,reached,more,than,under,where,hydrochloric,citric,used,adjust,results,indicated,that,revealed,obvious,response,promoted,photoreduction,UV,Vis,spectra,EIS,photocurrent,experiments,showed,had,better,light,migration,transient,absorption,also,exhibited,lifetimes,generated,carriers,prolonged,after,conductive,polymer,deposition,demonstrated,main,active,species,O2,Combined,activity,evaluation,possible,photocatalytic,mechanism,oxidation,proposed,addition,can,effectively,improve,acidic,conditions,meanwhile,provided,new,synergistic,multiple,pollu,tants,Good,stability,catalysts,made,scale,up,purification,water,feasible

0.52048