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Zinc Imidazolate Metal-Organic Frameworks (ZIF-8) for Electrochemical Reduction of CO 2 to CO

Yulin Wang, Pengfei Hou, Zhuo Wang, Peng Kang
Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry 2017 November 17, 18 (22): 3142-3147
28762639
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.

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