4.6 Article

Mechanochemical Impregnation of a Redox-Active Guest into a Metal-Organic Framework for Electrochemical Capture of CO2

Journal

ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 11, Issue 23, Pages 8442-8449

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.3c00133

Keywords

carboncapture; MOFs; electrochemistry; carbondioxide removal; electro-swing; redox activity; mechanochemistry

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This paper describes the facile synthesis of a redox-active MOF/quinone composite, which can be used as a cathodic material for the electrochemical capture of CO2. Conventional adsorbents for CO2 capture typically utilize swings in temperature and/or pressure to adsorb and desorb CO2. In this work, the authors demonstrate the synthesis of a redox-active MOF-based adsorbent for the electrochemical capture of CO2, using spectroelectrochemistry to study the interaction between the adsorbent and CO2. This represents an advancement towards the scalable production of electro-swing adsorbents and shows the potential of MOFs for this process.
This paper describes the facilesynthesis of a redox-activeMOF/quinone composite, which can be utilized as a cathodic materialfor the electrochemical capture of CO2. Conventionaladsorbents for CO2 capture typicallyutilizeswings in temperature and/or pressure to adsorb and desorb CO2. These mechanisms can be energy-intensive, which has inspiredfurther research on alternative capture mechanisms such as electro-swingCO(2) capture. For this, metal-organic frameworks(MOFs) have been suggested as a potential adsorbent owing to theirstability, ultrahigh surface areas, and ability to facilitate redoxreactions. However, MOFs have not yet been utilized for the electrochemicalcapture of CO2. In this work, we demonstrate the facilesynthesis of a redox-active MOF-based adsorbent for the electrochemicalcapture of CO2, and we employ spectroelectrochemistry tounderstand the adsorbent's interaction with CO2.This represents an advancement toward the scalable production of electro-swingadsorbents and signals that MOFs can be successfully employed forthis process.

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