Fabricating Core-Shell WC@C/Pt Structures and its Enhanced Performance for Methanol Electrooxidation  

核壳结构WC@C／Pt复合材料的构建及其对甲醇的高电催化氧化活性

作　　者：陈赵扬[1] 段隆发 褚有群[1] 盛江峰[1] 林文锋[2] 马淳安[1] 

机构地区：[1]浙江工业大学化学工程学院,绿色化学合成技术国家重点实验室培育基地,杭州310014 [2]英国拉夫堡大学化学工程学院,莱斯特郡拉夫堡LE11 3TU

出　　处：《Chinese Journal of Chemical Physics》2017年第4期450-456,I0002,共8页化学物理学报（英文）

基　　金：This work is supported by the International Science ＆ Technology Cooperation Program of China（No.2010DFB63680）, the Natural Science Foundation of Zhejiang Province （LQ15B030004） and Loughborough University and the EPSRC （EP/1013229/1）.

摘　　要：The spray-dried spheres within a W/Pt multi-separation can be used to prepare discrete core-shell WC@C/Pt catalysts through a typical carburization production mechanism at 800 ℃. In contrast with previous studies of the WC/Pt synthesis, the reaction observed here proceeds through an indirect annealing thereby resulting in core-shell structure, and mechanism at 600℃ wherein species diffuse, Pt nanoparticles were successfully dispersed in size/shape and randomly scattered across the in situ produced C spheres. Through direct carburization or at higher initial hydrochloroplatiuic acid concentrations, however, complete reaction with core-shell spheres was not observed. Indirect carburization reduces the strain felt by the bonds featuring the larger WC WC and Pt nanoparticles to be reserved, stability toward methanol oxidation. particles and allows the motion of carbon around influencing the eleetrocatalytic performance and

关 键 词：Self-disperse Core-shell structure Carbon-resist Tungsten carbide Methanol oxidation 

分 类 号：O[理学]