| 碳纳米管负载高分散Pt纳米颗粒的制备及表征 |
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| 引用本文： | 傅小波,余皓,彭峰,王红娟,吕平.碳纳米管负载高分散Pt纳米颗粒的制备及表征[J].无机化学学报,2006,22(6):1148-1154. |
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| 作者姓名： | 傅小波 余皓 彭峰 王红娟 吕平 |
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| 作者单位： | 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 |
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| 基金项目： | 广东省博士启动基金;广东省广州市科技局科技攻关项目 |
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| 摘 要： | 近年来,碳纳米管(CNTs)1]作为新型催化剂载体方面的研究2～11]受到了广泛关注。由于碳纳米管具有纳米级卷曲的表面,与石墨烯相比其表面π键发生变化,从而导致新的电子结构12],因此碳纳米管负载的催化剂在涉及电子传输过程的催化过程中具有特别的吸引力。燃料电池电极催化剂就是其中典型的一类13～15]。已有研究者选用碳纳米管作为载体,将Pt16～19]、PtRu20,21]等具有催化活性的贵金属或其合金负载到碳纳米管上,展现出了很好的电催化氧化活性。然而,到目前为止,制备用于燃料电池的具有均匀尺寸和分散性的负载型纳米催化剂仍然是一项…
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| 关 键 词： | 碳纳米管 铂 表面修饰 电催化氧化 |
| 文章编号： | 1001-4861(2006)06-1148-07 |
| 收稿时间： | 2006-01-13 |
| 修稿时间： | 2006-05-09 |
Preparation and Characterization of Highly Dispersed Platinum Nanoparticles Supported on Carbon Nanotubes |
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| FU Xiao-Bo,YU Hao,PENG Feng,WANG Hong-Juan and LU Ping.Preparation and Characterization of Highly Dispersed Platinum Nanoparticles Supported on Carbon Nanotubes[J].Chinese Journal of Inorganic Chemistry,2006,22(6):1148-1154. |
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| Authors: | FU Xiao-Bo YU Hao PENG Feng WANG Hong-Juan and LU Ping |
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| Institution: | School of Chemical and Energy Engineering, South China University of Technology, Guangdong Provincial Laboratory of Green Chemical Technology, Guangzhou 510640,School of Chemical and Energy Engineering, South China University of Technology, Guangdong Provincial Laboratory of Green Chemical Technology, Guangzhou 510640,School of Chemical and Energy Engineering, South China University of Technology, Guangdong Provincial Laboratory of Green Chemical Technology, Guangzhou 510640,School of Chemical and Energy Engineering, South China University of Technology, Guangdong Provincial Laboratory of Green Chemical Technology, Guangzhou 510640 and School of Chemical and Energy Engineering, South China University of Technology, Guangdong Provincial Laboratory of Green Chemical Technology, Guangzhou 510640 |
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| Abstract: | 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. |
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| Keywords: | carbon nanotube platinum surface modification electrooxidation |
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