乙醇在Pt/SiO_2-CNTs纳米催化剂上的电催化氧化  

Application of Pt/SiO2-CNTs Nano Catalysts in EthanolElectro-oxidation

作　　者：朱静[1] 李路[1] 韦小刚[2] 

机构地区：[1]商丘师范学院化学系,河南商丘476000 [2]湖南大学化学化工学院,湖南长沙410006

出　　处：《邢台职业技术学院学报》2011年第3期74-77,共4页Journal of Xingtai Polytechnic College

摘　　要：通过溶胶凝胶方法制备SiO2修饰的碳纳米管(SiO2-CNTs)为载体材料,利用微波辅助加热化学还原方法制备Pt/SiO2-CNTs电催化剂。然后分别利用扫描电子显微镜和能量散射谱仪对Pt/SiO2-CNTs电催化剂的表面形貌和元素组成进行了表征。在酸性介质中,采用循环伏安法研究了Pt/SiO2-C电催化剂对乙醇氧化的电催化活性。与商用催化剂PtRu/C电催化剂相比,在相同催化剂载量和实验条件下,Pt/SiO2-CNTs电催化剂具有更好的催化活性和抗CO中毒能力。The SiO2 modified carbon nanotubes were prepared through sol-gel method and used as catalyst support.The Pt/SiO2-CNTs were synthesized by microwave-assisted chemical reduction method.The micrograph and the elemental composition of Pt/SiO2-CNTs nanoparticles were characterized by scanning electron microscopy and energy dispersive X-ray spectroscopy,respectively.The electrocatalytic properties of Pt/SiO2-CNTs electrocatalyst for ethanol oxidation were investigated by cyclic voltammetry in acidic solution.Under the same catalyst loading mass and experimental conditions,the Pt/SiO2-C electrocatalyst shows higher catalytic activities than PtRu/C catalyst.It also possesses good anti-poisoning ability.

关 键 词：二氧化硅 电催化剂 纳米 

分 类 号：TM911[电气工程—电力电子与电力传动]