摘要
Platinum nanoparticles supported on carbon nanotubes (CNTs) were prepared by the chemical reduction method in solutions. The effects of reducing process and chemical modification of CNTs on the sizes and dispersion of nanoparticles were studied with SEM, TEM and XRD. It was demonstrated that the chemical modification of CNTs could improve their compatibility with solvents, hence the dispersibility of the platinum nanoparticles on CNTs. Among different reducing agents, including EG, NaBH4, HCHO and Na2S2O3, the smallest size, about 2.5 nm, and best dispersion of platinum nanoparticles were achieved by using EG as reductant under similar preparation conditions. The Pt/CNT catalyst prepared by EG reduction on H2SO4-modified CNTs exhibited excellent electrocatalytic activity for the direct methanol oxidation.
Platinum nanoparticles supported on carbon nanotubes （CNTs） were prepared by the chemical reduction method in solutions. The effects of reducing process and chemical modification of CNTs on the sizes and dispersion of nanoparticles were studied with SEM, TEM and XRD. It was demonstrated that the chemical modification of CNTs could improve their compatibility with solvents, hence the dispersibility of the platinum nanoparticles on CNTs. Among different reducing agents, including EG, NaBH4, HCHO and Na2S2O3, the smallest size, about 2.5 nm, and best dispersion of platinum nanoparticles were achieved by using EG as reductant under similar preparation conditions. The Pt/CNT catalyst prepared by EG reduction on H2SO4-modified CNTs exhibited excellent electrocatalytic activity for the direct methanol oxidation.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2006年第6期1148-1154,共7页
Chinese Journal of Inorganic Chemistry
基金
广东省自然科学基金资助项目(No.031420)
广州市科技计划项目资助项目(No.2003Z3-D2071)。
关键词
碳纳米管
铂
表面修饰
电催化氧化
carbon nanotube
platinum
surface modification
electrooxidation
