Single Catalyst Electrocatalytic Reduction Of CO2 In Water To H2+CO ...

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Single catalyst electrocatalytic reduction of CO2 in water to H2+CO syngas mixtures with water oxidation to O2†

Check for updates Peng Kang,a Zuofeng Chen,ab Animesh Nayak,a Sheng Zhanga and Thomas J. Meyer*a Author affiliations

* Corresponding authors

a Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA E-mail: [email protected]

b Department of Chemistry, Tongji University, Shanghai 200092, PR China

Abstract

A single Ru(II) polypyridyl carbene complex catalyzes the electrochemical reduction of CO2 in water with added bicarbonate to give syngas H2+CO mixtures at the cathode and water oxidation to O2 at the anode. The H2/CO ratio in the syngas product can be adjusted between 4 : 1 and 1 : 2 by varying the applied potential and solution pH with overall electrolysis energy efficiencies near 50%.

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