SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 49 ›› Issue (9): 161-169.DOI: 10.1016/j.cjche.2022.05.014

• Regular • 上一篇    下一篇

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

Fengfeng Gao1, Jinhua Luo2, Xuefeng Zhang1, Xiaogang Hao1, Guoqing Guan3, Zhong Liu4, Jun Li4, Qinglong Luo4   

  1. 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
  • 收稿日期:2022-01-12 修回日期:2022-04-24 发布日期:2022-10-19
  • 通讯作者: Xiaogang Hao,E-mail:xghao@tyut.edu.cn;Guoqing Guan,E-mail:guan@hirosaki-u.ac.jp
  • 基金资助:
    This work is 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) and JSPS KAKENHI Grant 19K12395, Japan.

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

Fengfeng Gao1, Jinhua Luo2, Xuefeng Zhang1, Xiaogang Hao1, Guoqing Guan3, Zhong Liu4, Jun Li4, Qinglong Luo4   

  1. 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
  • Received:2022-01-12 Revised:2022-04-24 Published:2022-10-19
  • Contact: Xiaogang Hao,E-mail:xghao@tyut.edu.cn;Guoqing Guan,E-mail:guan@hirosaki-u.ac.jp
  • Supported by:
    This work is 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) and 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

Abstract: 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.

Key words: Electrochemically switched ion extraction, PPy/I-@BiOI film, Radioactive iodide ion, Separation, Selectivity, Electrochemistry