Faculty of Science and Technology, Airlangga University, Surabaya, 60115, Indonesia.
Department of Chemistry Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama, 223-8522, Japan.
Chem Asian J. 2020 Mar 16;15(6):910-914. doi: 10.1002/asia.201901669. Epub 2020 Feb 25.
The study of CO electrochemical reduction to useful compounds using bare or modified BDD electrode attracts numerous attentions. Meanwhile, the efficiency of products obtained from CO electrochemical reduction is known to be determined by the electrode material and the electrolyte. Formic acid as main product and CO as a minor product, have also been known on the CO reduction using BDD electrode. Recently, we reported the successful improvement of CO production from the reduction of CO by decorating the surface of BDD electrode with palladium particles. Following this, herein, we present further investigation on electrolyte dependence, including cation and anion dependence and also concentration effect in order to understand deeply the CO reduction on surface of palladium modified BDD electrode. The results suggest the use of NaCl and KCl as a catholyte for optimum performance, in addition to the improvement of CO reduction product in higher electrolyte concentration.
使用未经修饰或修饰的 BDD 电极研究 CO 的电化学还原为有用的化合物吸引了众多关注。同时，已知 CO 电化学还原获得的产物的效率取决于电极材料和电解质。在使用 BDD 电极还原 CO 时，也已经知道甲酸是主要产物，CO 是次要产物。最近，我们报道了通过在 BDD 电极表面修饰钯颗粒成功提高了 CO 的产量。在此基础上，本文进一步研究了电解质的依赖性，包括阳离子和阴离子的依赖性以及浓度效应，以便深入了解 CO 在钯修饰 BDD 电极表面的还原。结果表明，使用 NaCl 和 KCl 作为阴极电解液可以获得最佳性能，此外，在较高电解质浓度下还可以提高 CO 还原产物。
