中文摘要：

以二氧化硅溶胶为硬模板,嵌段聚合物F127为软模板,通过双模板法合成了高介孔比例、窄孔径分布的介孔碳（MC）.进而经乙二醇还原法制备了高分散的MC载铂催化剂（Pt/MC）.采用循环伏安、计时电流、线性扫描伏安和电化学阻抗谱法研究了硫酸溶液中乙二醇在Pt/MC催化剂电极上的电化学氧化行为.实验结果表明,Pt/MC催化剂对乙二醇的电催化氧化性能显著高于商业化炭黑XC72R载Pt（Pt/XC72R）催化剂.电化学阻抗谱分析进一步揭示,乙二醇在Pt/MC催化剂电极上的电氧化反应具有较低的电荷传递电阻.Pt/MC催化剂高的电催化活性可以归结于MC大的孔径和均一的介孔结构对电子传输和传质的促进作用.

英文摘要：

Mesoporous carbon （MC） with high mesopore content and narrow pore size distribution was prepared using colloidal silica as hard template and Pluronic F127 triblock copolymer as soft template, respectively. Then highly dispersed Pt catalyst supported on MC was achieved by ethylene glycol （EG） reduction method. Electrooxidation behavior of EG on the Pt/MC catalyst electrode in sulfuric solution was investigated using cyclic voltammogram （CV）, chronoamperometry, linear sweeping voltammogram （LSV） and electrochemical impedance spectra （EIS） analysis. The experimental results indicate that the electrocatalytic performance of the Pt/MC catalyst for EG oxidation is much higher than that of Pt/XC72R catalyst. EIS analysis further reveals that the electrooxidation reaction of EG on the Pt/MC catalyst electrode has a lower charge-transfer resistance. The higher electrocatalytic activity of the Pt/MC catalyst may be due to the promotion of the MC support with large pore size and uniform mesoporous structure on electron transfer and mass transfer.