One-Step Synthesis of Au-Pd Alloy Nanodendrites and Their Catalytic Activity

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	One-Step Synthesis of Au-Pd Alloy Nanodendrites and Their Catalytic Activity
	L. H. Shi; A. Q. Wang; T. Zhang; B. S. Zhang; D. S. Su; H. Q. Li; Y. J. Song
	2013
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	117 期号:24 页码:12526-12536
摘要	Au-Pd bimetallic nanocrystals with well-defined dendritic morphology, uniform size, and homogeneous alloy structure were synthesized in an aqueous solution by using ascorbic acid as the reductant and triblock copolymer P123 as the stabilizing agent. In this synthesis, ascorbic acid played a key role in directing the nanodendritic morphology while the presence of Pd was mandatory for the formation of well-defined nanodendrites. Without Pd, only faceted nanoparticles of gold were formed under the same reaction conditions. Other reaction variables such as the addition sequence and the dropping rate of the metal precursors, the type and concentration of the stabilizing agents, and the reaction time and temperature were all found to affect the size uniformity and morphology perfectness to some extent. The Au/Pd atomic ratio could be tuned in a wide range without deteriorating the nanodendritic morphology. The as-prepared Au-Pd nanodendrites exhibited excellent catalytic activities toward electroxidation of methanol and reduction of 2-nitrophenol, and the catalytic performances could be effectively tuned by the Au/Pd ratio.
部门归属	[shi, lihua ; wang, aiqin ; zhang, tao] chinese acad sci, dalian inst chem phys, state key lab catalysis, dalian 116023, peoples r china. [shi, lihua] univ chinese acad sci, beijing 100049, peoples r china. [zhang, bingsen ; su, dangsheng] chinese acad sci, shenyang natl lab mat sci, inst met res, catalysis & mat div, shenyang 110016, peoples r china. [li, huanqiao ; song, yujiang] chinese acad sci, dalian inst chem phys, dalian natl lab clean energy, dalian 116023, peoples r china. ; zhang, t (reprint author), chinese acad sci, dalian inst chem phys, state key lab catalysis, dalian 116023, peoples r china. ; taozhang@dicp.ac.cn
关键词	Pt Bimetallic Nanodendrites Shape-controlled Synthesis Core-shell Nanoparticles Palladium Nanocrystals Hydrogen-peroxide Electrocatalytic Activity Platinum Nanostructures Selective Oxidation Oxygen Reduction Highly Efficient
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71459
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	L. H. Shi,A. Q. Wang,T. Zhang,et al. One-Step Synthesis of Au-Pd Alloy Nanodendrites and Their Catalytic Activity[J]. Journal of Physical Chemistry C,2013,117(24):12526-12536.
APA	L. H. Shi.,A. Q. Wang.,T. Zhang.,B. S. Zhang.,D. S. Su.,...&Y. J. Song.(2013).One-Step Synthesis of Au-Pd Alloy Nanodendrites and Their Catalytic Activity.Journal of Physical Chemistry C,117(24),12526-12536.
MLA	L. H. Shi,et al."One-Step Synthesis of Au-Pd Alloy Nanodendrites and Their Catalytic Activity".Journal of Physical Chemistry C 117.24(2013):12526-12536.