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Hierarchical Branched Platinum-Copper Tripods as Highly Active and Stable Catalysts

Abstract

Designing and manipulating over the structure of the nanomaterials can efficiently tailor their catalytic properties, enabling them promotion in both activity and stability. We herein report a shape-controlled synthesis of advanced Pt-Cu hierarchical tripods nanocrystals (HTNCs) by controlling the amount of KI and reaction time. The as-prepared nanocrystals (NCs) look like a typical tripod on the whole, consisted of similar branch structural units. In addition, the structure of HTNCs could also be obtained with a narrow Pt/Cu feeding ratio. Owing to the unique HTNCs structure, exposed high-index facets, as well as the probably electronic effects between Cu and Pt, the as-obtained Pt-Cu HTNCs can exhibit greatly enhanced electrocatalytic activity toward ethylene glycol oxidation reaction (EGOR) and glycerol oxidation (GOR), which are 5.1 and 6.5 times higher in mass activity, as well as 5.6 and 7.3 times in specific activity relative to the commercial Pt/C, showing a class of promising electrocatalysts for fuel cells. This work presents huge opportunities for optimizing the electrocatalytic oxidation reaction by designing the structure of nanocatalysts.

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Publication details

The article was received on 08 Mar 2018, accepted on 09 Apr 2018 and first published on 10 Apr 2018


Article type: Paper
DOI: 10.1039/C8NR01962B
Citation: Nanoscale, 2018, Accepted Manuscript
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    Hierarchical Branched Platinum-Copper Tripods as Highly Active and Stable Catalysts

    H. Xu, P. Song, F. Gao, Y. Shiraishi and Y. Du, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR01962B

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