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用多孔氧化铝为模板,通过恒电位法沉积制得钯(Pd)纳米线,再用循环伏安法在Pd纳米线表面沉积铂(Pt)纳米粒子,制得纳米Pt/PdNWAs复合催化剂,并用扫描电镜进行了表征。结果表明,纳米Pt/PdNWAs电极相比PdNWAs电极和纳米Pt电极,对甲酸具有更高的电催化氧化活性和稳定性,甲酸的浓度为1.00mol/L时,经直接途径氧化的峰电流达到12.33mA,而经间接途径氧化的峰电流达到10.85mA。
Using porous alumina as a template, palladium (Pd) nanowires were deposited by potentiostatic deposition, and platinum (Pt) nanoparticles were deposited on the surface of Pd nanowires by cyclic voltammetry to prepare nano-Pt / PdNWAs composite catalysts. Scanning electron microscopy was characterized. The results show that nano-Pt / PdNWAs electrode has higher electrocatalytic activity and stability for formic acid than PdNWAs electrode and nano-Pt electrode. When the concentration of formic acid is 1.00mol / L, the peak current of direct oxidation is 12.33 mA, while the peak current through the indirect oxidation reached 10.85mA.