铜硒化物纳米催化剂上二氧化碳的选择性电还原为甲醇。

Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.

School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, 100049, Beijing, China.

Nat Commun. 2019 Feb 8;10(1):677. doi: 10.1038/s41467-019-08653-9.

Production of methanol from electrochemical reduction of carbon dioxide is very attractive. However, achieving high Faradaic efficiency with high current density using facile prepared catalysts remains to be a challenge. Herein we report that copper selenide nanocatalysts have outstanding performance for electrochemical reduction of carbon dioxide to methanol, and the current density can be as high as 41.5 mA cm with a Faradaic efficiency of 77.6% at a low overpotential of 285 mV. The copper and selenium in the catalysts cooperate very well for the formation of methanol. The current density is higher than those reported up to date with very high Faradaic efficiency for producing methanol. As far as we know, this is the first work for electrochemical reduction of carbon dioxide using copper selenide as the catalyst.

电化学还原二氧化碳生产甲醇非常有吸引力。然而，使用易于制备的催化剂在高电流密度下实现高法拉第效率仍然是一个挑战。本文报道了硒化铜纳米催化剂在电化学还原二氧化碳生成甲醇方面具有优异的性能，在 285 mV 的低过电势下，电流密度可达 41.5 mA cm，法拉第效率为 77.6%。催化剂中的铜和硒非常有利于甲醇的生成。该电流密度高于迄今为止报道的电流密度，且生成甲醇的法拉第效率非常高。据我们所知，这是首次使用硒化铜作为催化剂进行电化学还原二氧化碳。