Department of Physics, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.
Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.
Chem Asian J. 2018 Oct 4;13(19):2800-2804. doi: 10.1002/asia.201800946. Epub 2018 Aug 19.
Here we report a partially oxidized palladium nanodot (Pd/PdO ) catalyst with a diameter of around 4.5 nm. In aqueous CO -saturated 0.5 m KHCO , the catalyst displays a Faradaic efficiency (FE) of 90 % at -0.55 V vs. reversible hydrogen electrode (RHE) for carbon monoxide (CO) production, and the activity can be retained for at least 24 h. The improved catalytic activity can be attributed to the strong adsorption of CO intermediate on the Pd/PdO electrode, wherein the presence of Pd during the electroreduction reaction of CO may play an important role in accelerating the carbon dioxide reduction reaction (CO RR). This study explores the catalytic mechanism of a partially oxidized nanostructured Pd electrocatalyst and provides new opportunities for improving the CO RR performance of metal systems.
在这里，我们报告了一种具有约 4.5nm 直径的部分氧化钯纳米点（Pd/PdO）催化剂。在 CO 饱和的 0.5m KHCO3 水溶液中，该催化剂在-0.55V 相对于可逆氢电极（RHE）下对一氧化碳（CO）的生成表现出 90%的法拉第效率（FE），并且至少可以保持 24 小时的活性。这种改进的催化活性可以归因于 CO 中间物在 Pd/PdO 电极上的强吸附，其中 CO 的电还原反应中 Pd 的存在可能在加速二氧化碳还原反应（CO RR）中发挥重要作用。本研究探讨了部分氧化纳米结构 Pd 电催化剂的催化机制，为改善金属体系的 CO RR 性能提供了新的机会。
