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Issue 6, 2012
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Highly branched Pt–Ni nanocrystals enclosed by stepped surface for methanol oxidation

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Abstract

Integrated design of nanocatalysts with a preferential surface atomic arrangement, composition, and overall morphology will provide great opportunities to enhance their catalytic activity and durability. In this work, Pt–Ni bimetallic nanobundles (NBs) with branched morphology and stepped surfaces have been prepared by a seed-based diffusion method. For methanol oxidation, the Pt–Ni NBs possess 3.6-fold the activity of conventional Pt nanoparticles (NPs), likely due to the high-density surface atomic steps and the presence of surface Ni species. With the aggregation resistant starlike morphology, the Pt–Ni NBs pertain 55% of initial peak current density after 4000 cycles, while conventional Pt NPs maintain only 10% of that.

Graphical abstract: Highly branched Pt–Ni nanocrystals enclosed by stepped surface for methanol oxidation

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Supplementary files

Article information


Submitted
02 Jan 2012
Accepted
27 Feb 2012
First published
29 Feb 2012

Chem. Sci., 2012,3, 1925-1929
Article type
Edge Article

Highly branched Pt–Ni nanocrystals enclosed by stepped surface for methanol oxidation

Z. Niu, D. Wang, R. Yu, Q. Peng and Y. Li, Chem. Sci., 2012, 3, 1925
DOI: 10.1039/C2SC00004K

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