一种新型纳米复合材料的合成及其电催化性能的研究

Synthesis and Electrocatalytic Performance of A Novel Nanocomposite

以甲酸为还原剂,在氧化石墨烯(GO)的水分散液中室温还原氯铂酸合成铂-氧化石墨烯(Pt-GO)纳米复合材料,采用扫描电镜观察其形貌,考察了Pt负载量、还原剂用量、表面活性剂和其它金属离子的加入对合成Pt-GO纳米复合材料的影响,并用循环伏安法测试Pt-GO纳米复合材料的电催化性能和抗CO中毒能力。结果表明,Pt负载量为60%时Pt-GO纳米复合材料的电催化性能最优,其电催化性能和抗CO中毒能力都优于传统的商业铂碳。

Using formic acid as a reducing agent,we synthesized platinum-graphene oxide(Pt-GO)nanocomposites by reducing chloroplatinic acid in GO aqueous dispersion solution at room temperature,and observed the morphology of Pt-GO nanocomposites by scanning electron microscope.Moreover,we investigated the effects of the loading amount of platinum,reducing agent dosage,and adding surfactants and other metal ions on the composites.Furthermore,we studied the electrocatalytic performance and the CO poisoning resistance of the composites by cyclic voltammetry.The results show that 60%Pt-GO nanocomposite has the best electrocatalytic performance,and its electrocatalytic performance and CO poisoning resistance are superior to that of the traditional commercial platinum carbon.