Underpotential deposition-induced synthesis of composition-tunable Pt-Cu nanocrystals and their catalytic properties

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	Underpotential deposition-induced synthesis of composition-tunable Pt-Cu nanocrystals and their catalytic properties
	Jiang, Yaqi ; Jia, Yanyan ; Zhang, Jiawei ; Zhang, Lei ; Huang, Huang ; Xie, Zhaoxiong ; Zheng, Lansun ; Jiang YQ(蒋亚琪) ; Xie ZX(谢兆雄) ; Zheng LS(郑兰荪)
刊名	http://dx.doi.org/10.1002/chem.201203729
	2013-02-25
关键词	Alloys Ammonium compounds Catalyst activity Cerium alloys Chlorine compounds Copper Copper alloys Dimethylformamide Electrocatalysis Formic acid Nanocrystals Nanoparticles Platinum
英文摘要	Pt-Cu alloy octahedral nanocrystals (NCs) have been synthesized successfully by using N,N-dimethylformamide as both the solvent and the reducing agent in the presence of cetyltrimethylammonium chloride. Cu underpotential deposition (UPD) is found to play a key role in the formation of the Pt-Cu alloy NCs. The composition in the Pt-Cu alloy can be tuned by adjusting the ratio of metal precursors in solution. However, the Cu content in the Pt-Cu alloy NCs cannot exceed 50 %. Due to the fact that Cu precursor cannot be reduced to metallic copper and the Cu content cannot exceed 50 %, we achieved the formation of the Pt-Cu alloy by using Cu UPD on the Pt surface. In addition, the catalytic activities of Pt-Cu alloy NCs with different composition were investigated in electrocatalytic oxidation of formic acid. The results reveal that the catalytic performance is strongly dependent on Pt-Cu alloy composition. The sample of Pt50Cu50 exhibits excellent activity in electrocatalytic oxidation of formic acid. A composed performance: Pt-Cu alloys have been prepared by directly incorporating underpotential-deposited Cu into the Pt lattice. The catalytic performances of the corresponding Pt-Cu alloy nanocrystals are strongly enhanced in comparison with commercial Pt/C catalysts (see figure). Copyright ? 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
语种	英语
出版者	Wiley-VCH Verlag
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89124]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Jiang, Yaqi,Jia, Yanyan,Zhang, Jiawei,et al. Underpotential deposition-induced synthesis of composition-tunable Pt-Cu nanocrystals and their catalytic properties[J]. http://dx.doi.org/10.1002/chem.201203729,2013.
APA	Jiang, Yaqi.,Jia, Yanyan.,Zhang, Jiawei.,Zhang, Lei.,Huang, Huang.,...&郑兰荪.(2013).Underpotential deposition-induced synthesis of composition-tunable Pt-Cu nanocrystals and their catalytic properties.http://dx.doi.org/10.1002/chem.201203729.
MLA	Jiang, Yaqi,et al."Underpotential deposition-induced synthesis of composition-tunable Pt-Cu nanocrystals and their catalytic properties".http://dx.doi.org/10.1002/chem.201203729 (2013).