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	A hydride-induced-reduction strategy for fabricating palladium-based core-shell bimetallic nanocrystals
	Xingli Wang ; Binghui Wu ; Guangxu Chen ; Chen GX(陈光需) ; Yun Zhao ; Pengxin Liu ; Yan Dai ; Nanfeng Zheng ; Zheng NF(郑南峰)
	2014-03-15
关键词	HYDROGEN NANOPARTICLES NANOWIRES STABILITY NANOCUBES
英文摘要	Zheng, NF (通讯作者); One key challenge in making high-quality bimetallic nanocrystals is to prevent self-nucleation of individual metal components. We report in this work an effective seeded growth strategy that uses activated hydrogen atoms as the reducing agent to prepare core-shell bimetallic nanocrystals. In the developed method, Pd nanocrystals serve as the seed and catalyst as well to activate H-2 for the reductive deposition of Ag. The unique feature of the developed method is that the activated hydrogen atoms are confined on the surface of the Pd seeds. Consequently, the self-nucleation of Ag is effectively inhibited so that the deposition of Ag occurs only on Pd. The mechanism studies reveal that reductive growth of Ag on Pd seeds proceeds until the Pd surface is fully covered by Ag. The Ag/Pd ratio in the prepared Pd@Ag nanocrystals is readily fine-tuned by the amount of AgNO3 or H-2. The method is effective for depositing Ag on Pd nanocrystal seeds with different morphologies such as nanosheets, nanocubes, tetrahedra and nanowires. More importantly, the deposition of Ag on Pd nanowires allows preparation of flexible transparent electrode material with sheet electronic conductivity of 271 S sq(-1) at a transmittance of over 90%.; MOST of China 2011CB932403 2014CB932004 NSFC of China 21131005 21333008
语种	英语
出版者	ROYAL SOC CHEMISTRY
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/80541]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Xingli Wang,Binghui Wu,Guangxu Chen,et al. A hydride-induced-reduction strategy for fabricating palladium-based core-shell bimetallic nanocrystals[J],2014.
APA	Xingli Wang.,Binghui Wu.,Guangxu Chen.,陈光需.,Yun Zhao.,...&郑南峰.(2014).A hydride-induced-reduction strategy for fabricating palladium-based core-shell bimetallic nanocrystals..
MLA	Xingli Wang,et al."A hydride-induced-reduction strategy for fabricating palladium-based core-shell bimetallic nanocrystals".(2014).

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