Fraunhofer Institute for Applied Solid State Physics (IAF), Tullastrasse 72, 79108 Freiburg, Germany.
Anal Chem. 2013 Jun 18;85(12):5764-9. doi: 10.1021/ac400377y. Epub 2013 May 29.
Electrochemical CO2 reduction has been investigated on a planar diamond electrode in aqueous and nonaqueous solutions. On a diamond electrode decorated with copper nanoparticles, CO2 reduction starts from -0.1 V versus a normal hydrogen electrode (NHE) when a mixture of water and ionic liquid ([H2O] = 10 μM) is used. The current density reaches 5.1 ± 0.1 mA cm(-2) for CO2 reduction at a potential of -1.3 V versus NHE. The main products are formic acid and formaldehyde. Moreover, the electrode system is stable and has a long lifetime. It is thus promising to be applied in the future for mass production of industrial chemicals and liquid fuels using CO2 as the source of raw material.
电化学 CO2 还原已在平面金刚石电极的水溶液和非水溶液中进行了研究。在铜纳米粒子修饰的金刚石电极上，当使用水和离子液体的混合物（[H2O] = 10 μM）时，CO2 还原从相对于标准氢电极（NHE）的-0.1 V 开始。在相对于 NHE 的-1.3 V 的电位下，CO2 还原的电流密度达到 5.1 ± 0.1 mA cm(-2)。主要产物是甲酸和甲醛。此外，该电极系统稳定且寿命长。因此，有望在未来用于使用 CO2 作为原料大规模生产工业化学品和液体燃料。
