Urchin-like Pd@CuO-Pd yolk-shell nanostructures: synthesis; characterization and electrocatalysis

	Urchin-like Pd@CuO-Pd yolk-shell nanostructures: synthesis; characterization and electrocatalysis
	Guo Ying; Xu Yitao; Zhao Bo; Wang Tao; Zhang Kai; Yuen Matthew M.F.; Fu Xianzhu; Sun Rong; Wong Ching-Ping
刊名	Journal of Materials Chemistry A
	2015
英文摘要	Novel urchin-like Pd@CuO–Pd yolk–shell nanostructures are synthesized through subsequent oxidation of Pd@Cu2O truncated octahedron core–shell precursors with a PdCl42− aqueous solution. The permeable hierarchical CuO shells are constructed by a radially standing 1D single-crystalline nanothorn with Pd nanoparticles. The Pd nanocube cores are encapsulated and confined in the void space of the urchin-like shells. The urchin-like yolk–shell Pd@CuO–Pd nanostructures demonstrate excellent electrocatalytic activity and selectivity for glucose oxidation. Enzyme-free glucose biosensors based on the urchin-like yolk–shell Pd@CuO–Pd electrocatalysts display a higher sensitivity (665.9 μA cm−2 mM−1) than those of the CuO nanoparticles (455.8 μA cm−2 mM−1), Cu2O nanoparticles (220.4 μA cm−2 mM−1), Pd@Cu2O truncated octahedra (179.1 μA cm−2 mM−1), Pd mixtures (65.5 μA cm−2 mM−1) and Pd nanocubes (1.42 μA cm−2 mM−1). The outstanding electrocatalytic performance of the urchin-like Pd@CuO–Pd yolk–shell nanostructures might be ascribed to two reasons: the unique hierarchical yolk–shell structures provide highly exposed active sites and act as an individualized nanoreactor to enhance the mass diffusion and transport of reactants at the electrode/electrolyte interface. Moreover, the nanocomposite of metal oxide semiconductor CuO and noble metal Pd would result in a synergetic effect to improve the electrocatalysis.
收录类别	SCI
原文出处	http://pubs.rsc.org/en/Content/ArticleLanding/2015/TA/c5ta01891a
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/6619]
专题	深圳先进技术研究院_集成所
作者单位	Journal of Materials Chemistry A
推荐引用方式 GB/T 7714	Guo Ying,Xu Yitao,Zhao Bo,et al. Urchin-like Pd@CuO-Pd yolk-shell nanostructures: synthesis; characterization and electrocatalysis[J]. Journal of Materials Chemistry A,2015.
APA	Guo Ying.,Xu Yitao.,Zhao Bo.,Wang Tao.,Zhang Kai.,...&Wong Ching-Ping.(2015).Urchin-like Pd@CuO-Pd yolk-shell nanostructures: synthesis; characterization and electrocatalysis.Journal of Materials Chemistry A.
MLA	Guo Ying,et al."Urchin-like Pd@CuO-Pd yolk-shell nanostructures: synthesis; characterization and electrocatalysis".Journal of Materials Chemistry A (2015).