摘要
以巯基乙酸为偶联层在玻碳(GC)电极上组装Pt纳米颗粒,得到Pt/巯基乙酸/GC电极,利用扫描电镜(SEM)和循环伏安法(CV)研究了不同条件下复合电极的表面形貌和电化学性能.研究结果表明,巯基乙酸在GC电极表面具有特性吸附,形成了具有一定致密性的吸附层.在0.5mol/LH2SO4+1.0mol/LCH3OH溶液中,组装19h的复合电极对甲醇氧化表现出较好的电催化性能.
The Pt/thioglycolic acid/GC composite electrode was prepared by self-assembling Pt nanoparticles on GC modified with thioglycolic acid. The composite electrode was characterized by SEM and cyclic voltograme method. The results show that the compact absorbing layer was formed because of thioglycolic characteristic absorb on the surface of GC electrode. The composite electrode, which had been self-assembled for 19 h, in the 2.5 mmol/L H2PtCl6 and 1.0 mmol/L PVP mixture solution, gave a good electrocatalytic oxidation of methanol in acidic system.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第10期1948-1951,共4页
Chemical Journal of Chinese Universities
基金
国家'九七三'计划项目(批准号:2002CB211807)
北京市属市管高等学校人才强教计划项目资助.
关键词
自组装
巯基乙酸
PT纳米粒子
玻碳电极
Self-assemble
Thioglycolic acid
Pt nanoparticles
GC electrode
