The electrochemical reduction of carbon dioxide to useful carbon based chemical fuels is one of the most attractive approaches towards slowing the growth of atmospheric CO2 emission. 1,2 The transition metal molecular CO2 reduction catalyst, Ni(cyclam)2+ (cyclam =1,4,8,11-tetraazacyclotetradecane), has been well studied because of its remarkable selectivity for CO production at a relative low overpotential in aqueous solution.3 However, the utilization of mercury electrode in the catalytic process is not environmental friendly and limited its application. In this work, we designed, synthesized and characterized a new metal organic framework constructed by Ni-cyclam-based ligand and Zr node as heterogeneours catalyst for CO2 reduction. MOF thin films has been prepared on FTO slides and functioned as heterogeneous catalyst for the efficient and selective reduction of carbon dioxide in aqueous electrolytes. Detailed comparison of molecular catalyst and MOF thin film catalyst has been showed in electrochemical experiments. The promising results validate the strategy of using MOF thin film to obtain porous, electrode-immobilized, 3D networks of molecular catalysts having competency for energy relevant electrochemical reactions.

Ni-cyclam-based metal-organic frameworks for electrochemical reduction of CO2

254th National Meeting (2017)

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