Surface characteristics of Ag-doped Au nanoparticles probed by Raman scattering spectroscopy
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Kwan | - |
dc.contributor.author | Kim, Kyung Lock | - |
dc.contributor.author | Shin, Kuan Soo | - |
dc.date.available | 2018-05-10T05:26:42Z | - |
dc.date.created | 2018-04-17 | - |
dc.date.issued | 2012-02 | - |
dc.identifier.issn | 0377-0486 | - |
dc.identifier.uri | http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/12506 | - |
dc.description.abstract | We have examined the surface characteristics of Ag-doped Au nanoparticles (below 5 mol% of Ag) by means of the surface-enhanced Raman scattering (SERS) of 2,6-dimethylphenylisocyanide (2,6-DMPI) and 4-nitrobenzenethiol (4-NBT). When Ag was added to Au to form similar to 35-nm-sized alloy nanoparticles, the surface plasmon resonance band was blue-shifted linearly from 523 to 517 nm in proportion to the content of Ag up to 5%. In the SERS spectra of 2,6-DMPI, the N-C stretching peak also shifted almost linearly from 2184 to 2174 cm-1 when the Ag content was 5 mol% or less; the peak then remained the same as that of the pure Ag film. The potential variation of the SERS spectrum of 2,6-DMPI in an electrochemical environment, as well as the effect of organic vapor, also showed a similar tendency. From the SERS of 4-NBT, we confirmed the occurrence of a surface-induced photoreaction converting 4-NBT to 4-aminobenzenethiol, when Ag was added to Au to form alloy nanoparticles. The photoreaction induction ability also increased linearly with the Ag content, reaching a plateau level at 5 mol% of Ag. All these observations suggest that the surface content of Ag should increase almost linearly as a function of the overall mole fraction of Ag and, once the Au/Ag nanoparticles reach 5 mol% of Ag, their surfaces are fully covered with Ag, showing the same surface characteristics of pure Ag nanoparticles. Copyright (C) 2011 John Wiley & Sons, Ltd. | - |
dc.publisher | WILEY-BLACKWELL | - |
dc.relation.isPartOf | JOURNAL OF RAMAN SPECTROSCOPY | - |
dc.subject | GOLD-SILVER NANOPARTICLES | - |
dc.subject | ENHANCED RAMAN | - |
dc.subject | ALLOY NANOPARTICLES | - |
dc.subject | BIMETALLIC NANOPARTICLES | - |
dc.subject | INDUCED PHOTOREACTION | - |
dc.subject | OPTICAL-PROPERTIES | - |
dc.subject | CO OXIDATION | - |
dc.subject | CATALYTIC-ACTIVITY | - |
dc.subject | SIZE | - |
dc.subject | METAL | - |
dc.title | Surface characteristics of Ag-doped Au nanoparticles probed by Raman scattering spectroscopy | - |
dc.type | Article | - |
dc.identifier.doi | 10.1002/jrs.3027 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF RAMAN SPECTROSCOPY, v.43, no.2, pp.228 - 236 | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000300836900008 | - |
dc.identifier.scopusid | 2-s2.0-84857784585 | - |
dc.citation.endPage | 236 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 228 | - |
dc.citation.title | JOURNAL OF RAMAN SPECTROSCOPY | - |
dc.citation.volume | 43 | - |
dc.contributor.affiliatedAuthor | Shin, Kuan Soo | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | Ag-doped Au | - |
dc.subject.keywordAuthor | surface enrichment | - |
dc.subject.keywordAuthor | surface-enhanced Raman scattering | - |
dc.subject.keywordAuthor | 2 | - |
dc.subject.keywordAuthor | 6-dimethylphenylisocyanide | - |
dc.subject.keywordAuthor | 4-nitrobenzenethiol | - |
dc.subject.keywordPlus | GOLD-SILVER NANOPARTICLES | - |
dc.subject.keywordPlus | ENHANCED RAMAN | - |
dc.subject.keywordPlus | ALLOY NANOPARTICLES | - |
dc.subject.keywordPlus | BIMETALLIC NANOPARTICLES | - |
dc.subject.keywordPlus | INDUCED PHOTOREACTION | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | CO OXIDATION | - |
dc.subject.keywordPlus | CATALYTIC-ACTIVITY | - |
dc.subject.keywordPlus | SIZE | - |
dc.subject.keywordPlus | METAL | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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