Zinc Imidazolate Metal–Organic Frameworks (ZIF‐8) for Electrochemical Reduction of CO2 to CO. Issue 22 (16th August 2017)

• Record Type: Journal Article
• Authors: Wang, Yulin; Hou, Pengfei; Wang, Zhuo; Kang, Peng
• Is Part Of: Chemphyschem. Volume 18:Issue 22(2017)
• Page Start: 3142
• Page End: 3147
• Publication Date: 2017-08-16
• Subjects: adsorption -- carbon dioxide -- electrocatalysis -- metal–organic frameworks -- ZIF-8; Chemistry, Physical and theoretical -- Periodicals; 541.05
• DOI: 10.1002/cphc.201700716
• Languages: English
• ISSNs: 1439-4235

Abstract

Abstract: Metal–organic frameworks (MOFs) are regarded as promising materials for CO2 adsorption, which is an important step in CO2 electrochemical reduction. In this work, zeolitic imidazolate framework (ZIF‐8) nanomaterials were synthesized with various zinc sources and used as electrocatalysts for CO2 reduction to CO. Among them, ZIF‐8, prepared using ZnSO4, delivers the best catalytic activity towards CO2 electroreduction, with 65 % CO yield. The main catalytic center can be attributed to the discrete Zn nodes in ZIF‐8. Electrolytes are important in increasing the CO selectivity, and NaCl is the best suitable electrolyte due to facile anion exchange. Abstract : Zeolitic imidazolate frameworks (ZIF‐8) are synthesized using various zinc sources in aqueous solution. These materials are effective catalysts for electrochemical reduction of CO2, with CO as the major product. The roles of the electrolyte and Zn nodes are investigated in detail.