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Electrochemical Capture and Release of CO2 in Aqueous Electrolytes Using an Organic Semiconductor Electrode
Johannes Kepler University of Linz, Austria.
University of Warsaw, Poland.
University of Innsbruck, Austria.
Johannes Kepler University of Linz, Austria.
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2017 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 9, no 15, 12919-12923 p.Article in journal (Refereed) Published
Abstract [en]

Developing efficient methods for capture and controlled release of carbon dioxide is crucial to any carbon. capture and utilization technology. Herein we present an approach using an organic. semiconductor electrode to electrochemically capture dissolved CO2 in aqueous electrolytes. The process relies on electrochemical reduction of a thin film of a naphthalene bisimide derivative, 2,7,bis (4-(2- (2-ethylhexyl)thiazol-4-yl)phenyObenzo [lmn][3,8] phenanthroline-1,3,6,8(2H,7H)-tetraone (NBIT). This molecule is specifically tailored to afford one-electron reversible and one-electron quasi-reversible reduction in aqueous conditions while, not dissolving or degrading. The reduced NBIT reacts with CO2 to form a stable aemicarbonate salt, which can be subsequently oxidized electrochemically to release CO2. The semicarbonate structure is confirmed by in situ IR spectroelectrochemistry. This process of capturing and releasing carbon dioxide can be realized in an oxygen-free environment under ambient pressure and temperature, with uptake efficiency for CO2 capture of similar to 2.3 mmol g(-1). This is on par with the best solution-phase amine chemical capture technologies available today.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2017. Vol. 9, no 15, 12919-12923 p.
Keyword [en]
carbonyl pigments; organic semiconductors; carbon dioxide capture; spectroelectrochemistry; naphthalene bisimide
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URN: urn:nbn:se:liu:diva-137609DOI: 10.1021/acsami.7b01875ISI: 000399965700003PubMedID: 28378994OAI: oai:DiVA.org:liu-137609DiVA: diva2:1097358
Note

Funding Agencies|Austrian Science Foundation (FWF) within the Wittgenstein Prize of N.S. Sariciftci Solare Energie Umwandlung [Z222- N19]; Warsaw University of Technology

Available from: 2017-05-22 Created: 2017-05-22 Last updated: 2017-05-22

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CiteExportLink to record
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