Mechanochemical Impregnation of a Redox-Active Guest into a Metal–Organic Framework for Electrochemical Capture of CO<sub>2</sub>
Samuel R. Wenger, Lyndon A. Hall, Deanna M. D’Alessandro
Abstract
Conventional adsorbents for CO 2 capture typically utilize swings in temperature and/or pressure to adsorb and desorb CO 2 . These mechanisms can be energy-intensive, which has inspired further research on alternative capture mechanisms such as electro-swing CO 2 capture. For this, metal–organic frameworks (MOFs) have been suggested as a potential adsorbent owing to their stability, ultrahigh surface areas, and ability to facilitate redox reactions. However, MOFs have not yet been utilized for the electrochemical capture of CO 2 . In this work, we demonstrate the facile synthesis of a redox-active MOF-based adsorbent for the electrochemical capture of CO 2, and we employ spectroelectrochemistry to understand the adsorbent’s interaction with CO 2 . This represents an advancement toward the scalable production of electro-swing adsorbents and signals that MOFs can be successfully employed for this process.