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American Chemical Society, ACS Sustainable Chemistry and Engineering, 6(3), p. 1255-1261, 2015

DOI: 10.1021/acssuschemeng.5b00250

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Ultrafine Ni–Pt Alloy Nanoparticles Grown on Graphene as Highly Efficient Catalyst for Complete Hydrogen Generation from Hydrazine Borane

Journal article published in 2015 by Zhujun Zhang, Zhang-Hui Lu ORCID, Xiangshu Chen
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Ultrafine Ni-Pt alloy NPs grown on graphene (NiPt/graphene) have been facilely prepared via a simple one-step co-reduction synthetic route and characterized by TEM, EDX, XRD, ICP-AES, XPS, Raman and FTIR methods. The characterized results showed that ultrafine Ni-Pt NPs with small size of around 2.3 nm were monodispersed on the graphene nanosheet. Compared to the pure Ni0.9Pt0.1 alloy NPs, graphene supported Ni0.9Pt0.1 alloy NPs exhibited much higher activity and hydrogen selectivity (100%) towards conversion of hydrazine borane (HB) to hydrogen. It is firstly found that the durability of the catalyst can be greatly enhanced by the addition of an excess amount of NaOH in this reaction, because of the neutralization of NaOH by the byproduct H3BO3 produced from the hydrolysis of HB. After 6 cycles of the catalytic reaction, no appreciable decrease in activity was observed, indicating that the Ni0.9Pt0.1/graphene catalysts have good durability/stability.