High methanol oxidation activity of well-dispersed pt nanoparticles on carbon nanotubes using nitrogen doping.

High methanol oxidation activity of well-dispersed pt nanoparticles on carbon nanotubes using nitrogen doping.
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DOI:
10.1007/s11671-009-9444-1
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发表时间:
2009-10-09
影响因子:
--
通讯作者:
Fang WC
Fang WC
中科院分区:
材料科学3区
文献类型:
--
作者:
Fang WC

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平均尺寸为 3.14 nm 的 Pt 纳米颗粒(NP)无需任何预处理即可良好分散在氮掺杂碳纳米管(CNT)上。结构性质显示了碳纳米管内特征性的氮键合,这为铂纳米粒子的均匀分布提供了良好的支持。在电化学特性中,覆盖有 Pt NP 的 N 掺杂 CNT 显示出优异的电流密度,因为所谓的 N 掺入可以在 CNT 内形成优先位点,同时固定 Pt NP 的界面能较低。因此,通过掺氮技术大幅增强的甲醇氧化活性在能源生产应用中非常有前景。
Pt nanoparticles (NPs) with the average size of 3.14 nm well dispersed on N-doped carbon nanotubes (CNTs) without any pretreatment have been demonstrated. Structural properties show the characteristic N bonding within CNTs, which provide the good support for uniform distribution of Pt NPs. In electrochemical characteristics, N-doped CNTs covered with Pt NPs show superior current density due to the fact that the so-called N incorporation could give rise to the formation of preferential sites within CNTs accompanied by the low interfacial energy for immobilizing Pt NPs. Therefore, the substantially enhanced methanol oxidation activity performed by N-incorporation technique is highly promising in energy-generation applications.
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