Electrodeposited iodide ions imprinted polypyrrole@bismuth oxyiodide film for an electrochemically switched renewable extractor towards iodide ions  

作　　者：Fengfeng Gao Jinhua Luo Xuefeng Zhang Xiaogang Hao Guoqing Guan Zhong Liu Jun Li Qinglong Luo 

机构地区：[1]College of Chemical Engineering and Technology,Taiyuan University of Technology,Taiyuan 030024,China [2]Information Management Division,Pingyang County Economic and Information Bureau,Wenzhou 325400,China [3]Energy Conversion Engineering Group,Institute of Regional Innovation(IRI),Hirosaki University,2-1-3 Matsubara,Aomori 030-0813,Japan [4]Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第9期161-169,共9页中国化学工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(U21A20303,22108188,U20A20141);the National Key Research and Development Program of China(2017YFE0129200);the Natural Science Foundation of Shanxi Province(201901D211054);JSPS KAKENHI Grant 19K12395,Japan。

摘　　要：Effective extraction and regeneration of radioactive iodide is one of urgent concerns for the safe utilization of nuclear energy.As a novel environmentally benign ion separation technique,electrochemically switched ion extraction(ESIE)process can be applied for effective capture and recovery of iodide ions(I^(-)).Herein,a novel kelp seaweed-like core/shell I^(-)imprinted polypyrrole@bismuth oxyiodide(PPy/I^(-)@BiOI)composite film is successfully prepared for the selective I^(-)capture in the ESIE system.It is found that the I^(-)can be easily trapped in the PPy/I^(-)@BiOI film after I^(-)is in situ desorbed from the film by an electrochemical reduction process since it offers particular electroactive binding sites for I^(-)extraction.The I^(-)imprinted PPy/I^(-)@BiOI film displays an extraction capacity as high as 325.2 mg·g^(-1)for I^(-)with favorable stability.In particular,the extraction and desorption of I^(-)is achieved by adjusting the redox potential and the pristine PPy/I^(-)@BiOI film can be regenerated and reused for multiple times without decrease in extraction capacity.It is expected that such a PPy/I^(-)@BiOI film would be useful as an electrochemically switched renewable extractor that could capture and regenerate I^(-)from radioactive water.

关 键 词：Electrochemically switched ion extraction PPy/I^(-)@BiOI film Radioactive iodide ion Separation Selectivity Electrochemistry 

分 类 号：TB383.2[一般工业技术—材料科学与工程] TL12[核科学技术—核能科学]