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doi:10.22028/D291-37112
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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