Facile Aqueous-Phase Synthesis and Electrochemical Properties of Novel PtPd Hollow Nanocatalysts

The catalytic performance of Pt-based nanocatalysts is closely related to the morphology and structure of the catalysts. We report herein the preparation of novel PtPd nanocatalysts with a hollow structure through a special galvanic replacement reaction and the high reaction selectivity of one kind...

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Bibliographic Details
Published in:Electrochimica acta 2016-09, Vol.212, p.966-972
Main Authors: Yang, Yi, Du, Juan-Juan, Luo, Lai-Ming, Zhang, Rong-Hua, Dai, Zhong-Xu, Zhou, Xin-Wen
Format: Article
Language:English
Subjects:
fuel cell
Methanol electrocatalytic oxidation
PtPd hollow nanocatalyst
Reaction selectivity
Triblock pluronic copolymers
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Summary:The catalytic performance of Pt-based nanocatalysts is closely related to the morphology and structure of the catalysts. We report herein the preparation of novel PtPd nanocatalysts with a hollow structure through a special galvanic replacement reaction and the high reaction selectivity of one kind of triblock pluronic copolymers. P123 (PEO19-PPO69-PEO19) has unique selectivity for the reduction of K2PdCl4 and K2PtCl6. Relative to the commercial Pt/C and PtPd alloy catalysts, the PtPd nanocatalysts exhibited enhanced electrocatalytic activity toward methanol oxidation. The excellent electrocatalytic activity is due to the unique structure of PtPd nanocataysts.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2016.07.085