The production of a high loading of almost monodispersed Pt nanoparticles on single-walled carbon nanotubes for methanol oxidation

The production of a high loading of almost monodispersed Pt nanoparticles on single-walled carbon nanotubes for methanol oxidation
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在单壁碳纳米管上制备高负载量的几乎单分散的 Pt 纳米颗粒用于甲醇氧化

DOI:
10.1016/j.elecom.2006.11.003
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发表时间:
2007-04
期刊:
Electrochem. Commun.
影响因子:
--
通讯作者:
Philippe Mercier
Philippe Mercier
中科院分区:
其他
文献类型:
--
作者:
曹剑瑜;张熙贵;Shiunchin C. Wang;杨辉;Daniel L. Akins;杜冲;Philippe Mercier

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将表面活性剂增溶的单壁碳纳米管(SWCNT)与铂的羰基络合物混合,制备了铂/单壁碳纳米管(SWCNT)复合材料。铂纳米粒子几乎是单分散的,直径约2.2 nm,形成在碳纳米管的表面,并广泛分散(即使在60wt.%的负载量下)在单个和/或小束上。复合材料的形成没有改变碳纳米管的结构,对甲醇氧化表现出显著的电催化活性。催化活性的提高可能是由于单壁碳纳米管独特的一维结构、铂纳米颗粒的均匀分散以及铂纳米颗粒与单壁碳纳米管之间的相互作用所致。单壁碳纳米管负载的铂可作为燃料电池的高比表面积载体和甲醇氧化的助催化剂。
Pt/single-walled carbon nanotube (SWCNT) composites have been prepared by mixing surfactant-assisted solubilized SWCNTs and Pt carbonyl complexes. Pt nanoparticles that are nearly monodispersed with a diameter of ca. 2.2nm are formed on the surface of the SWCNTs and broadly dispersed (even at 60wt.% loading) on individual and/or small bundles. Formation of the composite does not lead to a change in the structure of SWCNTs, and the composite exhibits significantly enhanced electrocatalytic activity for methanol oxidation. The enhancement in catalytic activity may result from the unique 1-D structures of SWCNTs, the uniform dispersion of Pt nanoparticles, and the interactions between the Pt nanoparticles and the SWCNTs. The SWCNT-supported Pt can serve as a high surface area support for fuel cell applications and a co-catalyst for methanol oxidation.
用于氧还原反应的碳载Pt-Co合金纳米颗粒
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