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
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- 巻
- 389
- 号
- 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
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- 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
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- DOI : 10.1016/j.cej.2020.124498
- ISSN : 1385-8947
- eISSN : 1873-3212
- SCOPUS ID : 85079638289
- Web of Science ID : WOS:000519528800008