氮磷双掺杂碳负载钯催化剂的制备及其对甲酸电催化氧化性能

Electrocatalytic Performance of Nitrogen and Phosphorus Co-Doped Carbon Supported Pd Catalysts for Formic Acid Oxidation

摘要: 在800℃高温焙烧下制备了氮磷双掺杂的Vulcan XC-72碳载体(C-NP-800)，并通过改进的液相浸渍还原法制备了氮磷掺杂碳负载钯催化剂(Pd/C-NP-800)。通过XRD、XPS、EDS、TEM和Raman物理表征及循环伏安法和计时电流法等电化学方法对其电催化氧化甲酸性能进行测试。结果表明，氮磷掺杂的碳负载钯催化剂有更小的Pd金属粒子粒径，对甲酸电催化氧化活性和稳定性均有提高，抗CO中毒能力也有所增强。

Abstract: Nitrogen and phosphorus co-doped Vulcan XC-72 carbon support (C-NP-800) was prepared by cal-cining under 800˚C. Nitrogen and phosphorus co-doped carbon supported Pd catalyst (Pd/C-NP-800) was synthesized by an improved liquid reduction method. The catalytic activity of the formic acid oxidation was investigated by physical characterization including XRD, XPS, EDS, TEM and Raman and electrochemical method of cyclic voltammetry and chronoamperometry. The results showed that the carbon supported palladium catalyst doped with nitrogen and phosphorus had smaller particle size of Pd, higher activity and stability for formic acid electrocatalytic oxidation, and stronger resistance to CO poisoning.