微波合成PtRu/CNTs催化剂及其电催化性能

为了获得有良好电催化活性的碳负载铂钌合金的催化剂，提出一种快速均匀的微波辐射加热的多元醇方法.用氯铂酸和氯化钌的乙二醇溶液为前驱体，碳纳米管（CNTs）为载体，采用该方法合成了PtRu/CNTs电催化剂.利用透射电镜(TEM)、X-射线衍射(XRD)和能量散射X 射线能谱（EDX）对催化剂进行了表征,并用循环伏安实验评价了催化剂对甲醇电化学氧化的电催化活性．结果表明，PtRu合金纳米粒子具有均匀的粒径，在2.0~4.0 nm之间，平均粒径为3.4 nm，并高度分散在CNTs表面．PtRu/CNTs电催化剂对甲醇的电化学氧化具有良好的电催化活性.

Microwave synthesis and electrocatalytic activity of PtRu/CNTs catalyst

For preparing carbon supported PtRu alloy nanoparticles catalyst with high electrocatalytic activity for methanol electrooxidation,a rapid and uniform microwave irradiation heating polyol process was presented.PtRu/carbon nanotubes(CNTs) electrocatalyst was synthesized by employing the ethylene glycol solution of H_2PtCl_6 and RuCl_3 as precursor,and CNTs as support.The catalyst was characterized by transmission electron microscopy(TEM),X-ray diffraction(XRD) and energy dispersion X-ray spectrum(EDX).The catalyst electrocatalytic activity for methanol electrooxidation was measured by cyclic voltametry.The results show that the PtRu nanoparticles are uniform in size with average size of 3.4 nm,and that most PtRu nanoparticles range from 2.0 nm to 4.0 nm.PtRu nanopartilces are highly dispersed on the surface of CNTs.PtRu/CNTs catalyst exhibites high electrocatalytic activity for methanol electrooxidation.