| Directed calcium chloride coalescence method for preparation of silver nanocubes. | |
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MedLine Citation:
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PMID: 20719049 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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Controlling the size, shape, and structure of metal nanoparticles is very important because of the strong correlation between these parameters and their resulting optical, electrical, and catalytic properties. This paper describes a directed calcium chloride coalescence method, based upon incubating a silver colloid with an aqueous solution of CaCl(2), for preparation of silver nanocubes with a particle size of 270 to 950 nm. The method avoids the use of nonvolatile surfactants and polymers, which may be adsorbed onto the silver nanocubes and interfere with their possible applications in catalysis and analytical devices based on surface-enhanced Raman scattering (SERS) spectroscopy. The nanocubes show good SERS activity in the presence of adsorbed 4-mercaptobenzoic acid (4-MBA) with excitation at 632.8 nm, and the enhancement factor reaches approximately 7 x 10(5). The nanocubes are produced in a simple and cost-effective way, and they are expected to play an important role in the development of SERS-based analytical devices. The method may represent a novel route for preparation of metal nanocubes, which is a subject of intense interest. |
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Authors:
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Lixin Xia; Yi Jia; Guangye Liu; Jushi Li; Mengtao Sun |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Applied spectroscopy Volume: 64 ISSN: 1943-3530 ISO Abbreviation: Appl Spectrosc Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-08-19 Completed Date: 2010-11-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372406 Medline TA: Appl Spectrosc Country: United States |
Other Details:
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Languages: eng Pagination: 867-70 Citation Subset: - |
Affiliation:
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College of Chemistry, Liaoning University, 66 Chongshan Middle Road, Huanggu District, Shenyang 110036, China. lixinxia@lnu.edu.cn |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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