热解合成Pt-Ni催化剂及对乙醇电催化氧化

Ethanol Oxidation Reaction on the Pt-Ni Composite Catalyst Prepared by Pyrolysis Process in an Alkaline Solution

不引入其他还原剂，在多壁碳纳米管（MWCNTs）和铂镍前驱体存在的条件下，采用直接热解方法，在MWCNTs表面制备出Ni掺杂的铂基催化剂（PtxNiy／MWCNTs）．通过XRD和EDX的测试证明了Pt—Ni纳米颗粒在MWCNTs表面的生成．TEM的照片表明样品颗粒的平均粒径在4～8nm．在碱性溶液中，利用CV方法测试了制备的PtxNiy／MWCNTs催化剂对乙醇氧化的电催化行为．结果显示，Pt1Ni1／MWCNTs在所制备的催化剂中对乙醇的电化学氧化具有高的催化活性．

In the absence of other reducing agents, multi-walled carbon nanotubes（MWCNTs） suppor- ted Pt-Ni bimetallic catalysts were prepared for the first time by a facile method of pyrolysis. XRD and EDX analysis strongly demonstrated the formation of Pt-Ni nanoparticles on the surface of MWCNTs. TEM images revealed that the average particle sizes ranged from 4 to 8 nm. The electrocatalytic activities of Ptx Niy/MWCNTs towards ethanol oxidation reaction （EOR） were investigated by CV, revealing that the catalyst of Ptl Nil/MWCNTs has the best electrocalytic activity toward EOR among the as-prepared cata- lysts.