1. Self-Decoration of PtNi Alloy Nanoparticles on Multiwalled Carbon Nanotubes for Highly Efficient Methanol Electro-Oxidation.
- Author
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Zhou, Yu-Yan, Liu, Chang-Hai, Liu, Jie, Cai, Xin-Lei, Lu, Ying, Zhang, Hui, Sun, Xu-Hui, and Wang, Sui-Dong
- Subjects
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PLATINUM nanoparticles , *NICKEL alloys , *MULTIWALLED carbon nanotubes , *ELECTROLYTIC oxidation , *IONIC liquids , *FUEL cells , *CATALYSTS , *CHARGE exchange - Abstract
A simple one-pot method was developed to prepare PtNi alloy nanoparticles, which can be self-decorated on multiwalled carbon nanotubes in [BMIm][BF] ionic liquid. The nanohybrids are targeting stable nanocatalysts for fuel cell applications. The sizes of the supported PtNi nanoparticles are uniform and as small as 1-2 nm. Pt-to-Ni ratio was controllable by simply selecting a PtNi alloy target. The alloy nanoparticles with Pt-to-Ni ratio of 1:1 show high catalytic activity and stability for methanol electro-oxidation. The performance is much higher compared with those of both Pt-only nanoparticles and commercial Pt/C catalyst. The electronic structure characterization on the PtNi nanoparticles demonstrates that the electrons are transferred from Ni to Pt, which can suppress the CO poisoning effect. Graphical Abstract: [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR]
- Published
- 2016
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