碳纳米管负载高分散Pt纳米颗粒的制备及表征  

Preparation and Characterization of Highly Dispersed Platinum Nanoparticles Supported on Carbon Nanotubes

作　　者：傅小波[1] 余皓[1] 彭峰[1] 王红娟[1] 吕平[1] 

机构地区：[1]华南理工大学化工与能源学院,广东省绿色化学产品技术重点实验室,广州510640

出　　处：《无机化学学报》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)。

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.

关 键 词：碳纳米管 铂 表面修饰 电催化氧化 

分 类 号：O643[理学—物理化学]