| Improved stabilities on surface-enhanced Raman scattering-active Ag/Al(2)O(3) films on substrates. | |
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MedLine Citation:
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PMID: 23115774 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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As is shown in the literature, surface-enhanced Raman scattering (SERS)-active Ag films obtained by the salting-out of Ag colloids from solutions with some salts, are popularly used to examine the structure of analytes. SERS-active Ag nanoparticles (NPs) demonstrate more significant SERS effects than Au NPs, however, problems regarding the stabilities of SERS-active Ag NPs remain to be overcome. In this work, Ag/Al(2)O(3) colloids were prepared in 0.1 M HNO(3) solutions containing Al(2)O(3) NPs with higher heat capacity by sonoelectrochemical methods. SERS-active Ag/Al(2)O(3) films deposited on glass slides were prepared by the addition of a saturated NaCl solution in the prepared Ag/Al(2)O(3) colloids-containing solution. In an acceptable sacrifice of Raman intensity by ca. 30% magnitude, the prepared Ag/Al(2)O(3) films markedly improved thermal stability by raising the operation temperature over 100 °C, compared to Ag films. Meanwhile, aging of SERS enhancement capability in an atmosphere of relative humidity (RH) of 50% and 20% (v/v) O(2) at 30 °C is significantly depressed using Ag/Al(2)O(3) films. |
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Authors:
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Fu-Der Mai; Kuang-Hsuan Yang; Yu-Chuan Liu; Ting-Chu Hsu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-10-31 |
Journal Detail:
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Title: The Analyst Volume: - ISSN: 1364-5528 ISO Abbreviation: Analyst Publication Date: 2012 Oct |
Date Detail:
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Created Date: 2012-11-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372652 Medline TA: Analyst Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Biochemistry, School of Medicine, College of Medicine, Taipei Medical University, No. 250, Wu-Hsing St, Taipei 11031, Taiwan. liuyc@tmu.edu.tw. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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