Synthesis of Au-Ag alloy nanoparticles supported on silica gel via galvanic replacement reaction

	Synthesis of Au-Ag alloy nanoparticles supported on silica gel via galvanic replacement reaction
	Liu, Xiaoyan 1,2; Wang, Aiqin 1; Li, Lin 1; Zhang, Tao 1; Mou, Chung-Yuan 2; Lee, Jyh-Fu 3
刊名	progress in natural science-materials international
	2013-06-01
卷号	23 期号:3 页码:317-325
关键词	Gold Silver Alloy XAS Galvanic replacement reaction
通讯作者	张涛 ; chung-yuan mou
产权排序	待补充
合作状况	英
英文摘要	synthesis of supported au-ag bimetallic has attracted much attention since we found for the first time that au and ag had synergistic effect on co oxidation and preferential co oxidation in rich hydrogen. in this work, the formation of au-ag alloy nanoparticles supported on silica gel by galvanic replacement reaction has been investigated. we applied various characterizations including x-ray diffraction (xrd), transmission electronic microscopy (tem), ultraviolet visible spectroscopy (uv-vis), x-ray absorption spectroscopy (xas) to characterize the formation process of au-ag alloy. although the average particle sizes of the au-ag alloy nanoparticles obtained by the galvanic replacement reaction are relatively large comparing with that of loading au first, the catalytic activity of the catalyst in preferential co oxidation is almost the same. this result manifested that the particle size effect of au-ag nanoparticles was not as tremendous as that of monometallic gold. the formation of au-ag alloy made it less sensitive to the particle size. (c) 2013 chinese materials research society. production and hosting by elsevier b.v. all rights reserved.
学科主题	物理化学
WOS标题词	science & technology ; technology
类目[WOS]	materials science, multidisciplinary ; multidisciplinary sciences
研究领域[WOS]	materials science ; science & technology - other topics
关键词[WOS]	gold-silver alloy ; co oxidation ; catalytic-activity ; mesoporous support ; nanoporous gold ; phase synthesis ; size ; nanostructures ; nanoclusters ; nanocrystals
收录类别	SCI
资助信息	1，1
原文出处	325
语种	英语
WOS记录号	WOS:000322933700012
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119562]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan 3.Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan
推荐引用方式 GB/T 7714	Liu, Xiaoyan,Wang, Aiqin,Li, Lin,et al. Synthesis of Au-Ag alloy nanoparticles supported on silica gel via galvanic replacement reaction[J]. progress in natural science-materials international,2013,23(3):317-325.
APA	Liu, Xiaoyan,Wang, Aiqin,Li, Lin,Zhang, Tao,Mou, Chung-Yuan,&Lee, Jyh-Fu.(2013).Synthesis of Au-Ag alloy nanoparticles supported on silica gel via galvanic replacement reaction.progress in natural science-materials international,23(3),317-325.
MLA	Liu, Xiaoyan,et al."Synthesis of Au-Ag alloy nanoparticles supported on silica gel via galvanic replacement reaction".progress in natural science-materials international 23.3(2013):317-325.