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Titel: Structure and Potential‐Dependent Selectivity in Redox‐Metallopolymers: Electrochemically Mediated Multicomponent Metal Separations
VerfasserIn: Chen, Raylin
Feng, Jiangyan
Jeon, Jemin
Sheehan, Thomas
Rüttiger, Christian
Gallei, Markus
Shukla, Diwakar
Su, Xiao
Sprache: Englisch
Titel: Advanced functional materials
Bandnummer: 31
Heft: 15
Verlag/Plattform: Wiley
Erscheinungsjahr: 2021
DDC-Sachgruppe: 620 Ingenieurwissenschaften und Maschinenbau
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Electro-responsive functional materials can play a critical role in selective metal recovery and recycling due to the need for molecular differentiation between transition metals in complex mixtures. Redox-active metallopolymers are a promising platform for electrochemical separations, offering versatile structural tuning and fast electron transfer. First, through a judicious selection of polymer structure between a main-chain metallopolymer (polyferrocenylsilane) and a pendant-group metallopolymer (polyvinylferrocene), charge-transfer interactions and binding strength toward competing metal ions are tuned, which as a result, dictate selectivity. For example, almost an order of magnitude increase in separation factor between chromate and meta-vanadate can be achieved, depending on polymer structure. Second, these metallopolymer electrodes exhibit potential-dependent selectivity that can even flip ion preference, based solely on electrical means—indicating a control parameter that is orthogonal to structural modifications. Finally, this work presents a framework for evaluating electrochemical separations in multicomponent ion mixtures and elucidates the underlying charge-transfer mechanisms resulting in molecular selectivity through a combination of spectroscopy and electronic structure calculations. The findings demonstrate the applicability of redox-metallopolymers in tailored electrochemical separations for environmental remediation, value-added metal recovery, waste recycling, and even mining processing.
DOI der Erstveröffentlichung: 10.1002/adfm.202009307
URL der Erstveröffentlichung: https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.202009307
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-371120
hdl:20.500.11880/33679
http://dx.doi.org/10.22028/D291-37112
ISSN: 1616-3028
1616-301X
Datum des Eintrags: 29-Aug-2022
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Chemie
Professur: NT - Prof. Dr. Markus Gallei
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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