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Selective Electrochemical Reduction of Carbon Dioxide Using Cu Based Metal Organic Framework for CO2 Capture
- Qiu, Yan-Ling, Zhong, He-Xiang, Zhang, Tao-Tao, Xu, Wen-Bin, Su, Pan-Pan, Li, Xian-Feng, Zhang, Hua-Min
- ACS applied materials & interfaces 2018 v.10 no.3 pp. 2480-2489
- aqueous solutions, carbon, carbon dioxide, catalytic activity, coordination polymers, copper, electrochemistry, electrodes, hydrogen production, methane, paper, solubility
- The conversion efficiency and product selectivity of the electroreduction of carbon dioxide have been largely limited by the low CO₂ solubility in aqueous solution. To relieve this problem, Cu₃(BTC)₂ (Cu-MOF) as CO₂ capture agent was introduced into a carbon paper based gas diffusion electrode (GDE) in this study. The faradaic efficiencies (FEs) of CH₄ on GDE with Cu-MOF weight ratio in the range of 7.5–10% are 2–3-fold higher than that of GDE without Cu-MOF addition under negative potentials (−2.3 to −2.5 V vs SCE), and the FE of the competitive hydrogen evolution reaction (HER) is reduced to 30%. This work paves the way to develop GDE with high catalytic activity for ERC.