化学镀制备镍纳米线/管阵列铂钯催化剂载体

以阳极氧化铝作为模板，用化学镀的方法制备了可以用作铂钯复合催化剂载体的镍纳米线和纳米管阵列，利用置换反应将铂钯复合催化剂沉积在镍纳米阵列材料上．SEM图片表明镍纳米线的平均直径 为100 nm，镍纳米管的平均内径为20 nm． EDS扫描的结果表明铂钯元素均匀地分布在阵列材料上．循环伏安研究发现载有铂钯催化剂的镍纳米管阵列对乙醇氧化的电催化活性明显高于载有铂钯催化剂的镍纳米线阵列．

Electroless Deposition of Nickel Nanowire and Nanotube Arrays as Supports for Pt-Pd Catalyst for Ethanol Electrooxidation

Nickel nanowire and nanotube arrays as supports for Pt-Pd catalyst were prepared by electroless deposition with anodic aluminum oxide template. Pt-Pd composite catalyst was deposited on the arrays by displacement reaction. SEM images show that the nickel nanowires have an average diameter of 100 nm and the nickel nanotubes have an average inner diameter of 200 nm. EDS scanning reveals that elemental Pt and Pd disperse uniformly on the arrays. Cyclic voltammetry study indicates that the nickel nanotube array loaded with Pt-Pd possesses a higher electrochemical activity for ethanol oxidation than the nickel nanowire array with Pt-Pd.