Journal
CRYSTENGCOMM
Volume 16, Issue 9, Pages 1606-1610Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ce41848k
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Funding
- NSFC [21376122, 21273116]
- Natural Science Foundation of Jiangsu Province [BK20131395]
- United Fund of NSFC and Yunnan Province [U1137602]
- Industry-Academia Cooperation Innovation Fund Project of Jiangsu Province [BY2012001, BY2013001-04]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Controlled syntheses of noble metal based alloy nanocubes with {100} facets have attracted increasing attention due to their specific physical and chemical properties. This paper reports a facile, green and one-pot synthesis of platinum-gold alloy nanocubes (Pt-Au ANCs) with high yield and uniform size by a facile co-chemical reduction method. The detailed morphology, composition and structure of Pt-Au ANCs were fully characterized and their formation mechanism was investigated. The key synthesis strategy was the introduction of polyallylamine hydrochloride (PAH), which not only acted as a capping agent and facet-selective agent but also served as a complex-forming agent to effectively tune the reduction potentials of HAuCl4/Au and H2PtCl6/Pt pairs to very close values. In addition, the as-prepared Pt-Au ANCs possessed excellent colloidal stability in aqueous solution and exhibited superior catalytic activity toward the reduction of 4-nitrophenol (4-NP) compared to commercial Pt black.
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