Controlled Etching as a Route to High Quality Silver Nanospheres for Optical Studies

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	Controlled Etching as a Route to High Quality Silver Nanospheres for Optical Studies
	Cobley, CM ; Rycenga, M ; Zhou, F ; Li, ZY ; Xia, YN
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2009
卷号	113 期号:39 页码:16975
关键词	ENHANCED RAMAN-SCATTERING SELF-ASSEMBLED MONOLAYERS SINGLE-CRYSTAL METAL NANOPARTICLES FACILE SYNTHESIS POLYOL SYNTHESIS NANOCUBES NANOCAGES NANOCRYSTALS SPECTROSCOPY
ISSN号	1932-7447
通讯作者	Xia, YN: Washington Univ, Dept Biomed Engn, St Louis, MO 63130 USA.
中文摘要	We present a new method based on wet etching for the production of high quality, single-crystal Ag nanospheres. By rapidly mixing a suspension of uniform Ag nanocubes with a small amount of ferric nitrate or ferricyanide-based etching solution, we could either truncate the sharp comers and edges to form rounded nanocubes or etch further to obtain nanospheres without sharp features but with roughly the same diameter as the original cubes. Notably, this technique could be used to produce uniform Ag nanospheres with a broad range of sizes, opening up new possibilities for fundamental studies oil surface-enhanced Raman scattering (SERS), as previous synthetic methods were unable to produce uniform spheres larger than similar to 35 nm. In this paper, we demonstrate the synthesis of Ag spheres as small as 25 nm and as large as 142 nm and investigate their SERS properties, finding the 142 nm spheres to have an order of magnitude larger enhancement factor. We also used these nanocrystals to study the effect of sharp corners and edges on the localized Surface plasmon resonance.
收录类别	SCI
资助信息	NSF [DMR-0804088, ECS-0335765]; NIH [DPI OD000798]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/35126]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Cobley, CM,Rycenga, M,Zhou, F,et al. Controlled Etching as a Route to High Quality Silver Nanospheres for Optical Studies[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2009,113(39):16975.
APA	Cobley, CM,Rycenga, M,Zhou, F,Li, ZY,&Xia, YN.(2009).Controlled Etching as a Route to High Quality Silver Nanospheres for Optical Studies.JOURNAL OF PHYSICAL CHEMISTRY C,113(39),16975.
MLA	Cobley, CM,et al."Controlled Etching as a Route to High Quality Silver Nanospheres for Optical Studies".JOURNAL OF PHYSICAL CHEMISTRY C 113.39(2009):16975.