論文

査読有り
2020年6月1日

An electrically switched ion exchange film with molecular coupling synergistically-driven ability for recovery of Ag+ ions from wastewater

Chemical Engineering Journal
  • Junjian Niu
  • ,
  • Wenjun Yan
  • ,
  • Juan Du
  • ,
  • Xiaogang Hao
  • ,
  • Fengbin Wang
  • ,
  • Zhongde Wang
  • ,
  • Guoqing Guan

389
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.cej.2020.124498
出版者・発行元
ELSEVIER SCIENCE SA

© 2020 Elsevier B.V. An electrically switched ion exchange film with molecular coupling synergistically-driven ability for the selective recovery of Ag+ ions is developed by coupling a conducting polypyrrole (PPy) with a 2, 2ʹ-dithiosalicylic acid (DTSA) at molecular scale. The rapid and selective uptake/release of Ag+ ions by this hybrid film was found to be realized by the electrochemical circulation of the PPy ↔ PPyn+ as well as the disulfide ↔ dithiolate and the recognition ability of the carboxyl groups and disulfide bonds of DTSA. As a result, the recovery of Ag+ ions can be handily achieved by adjusting the operating potential applied on the hybrid film coated electrode. The electrochemical quartz crystal microbalance measurements combined with the cyclic voltammetric technique, X-ray photoelectron spectroscopy and density functional theory computations were performed to identify the uptake/release mechanism of the hybrid film. Furthermore, the uptake capacity of the hybrid film maintained almost invariable after 10 consecutive uptake/release cycles, and the regeneration rate of Ag+ ions remained over 80% in each cycle. It is expected that such an electroactive hybrid film can be applied for the recovery of Ag+ ions from various industrial discharges.

リンク情報
DOI
https://doi.org/10.1016/j.cej.2020.124498
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000519528800008&DestApp=WOS_CPL
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85079638289&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85079638289&origin=inward
ID情報
  • DOI : 10.1016/j.cej.2020.124498
  • ISSN : 1385-8947
  • eISSN : 1873-3212
  • SCOPUS ID : 85079638289
  • Web of Science ID : WOS:000519528800008

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