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Shape evolution of silver nanoplates through heating and photoinduction
journal contribution
posted on 2013-01-01, 00:00 authored by Bin TangBin Tang, S Xu, X Hou, Jingliang LiJingliang Li, Lu Sun, W Xu, Xungai WangShape conversions of silver nanoplates were realized by heating and subsequent light irradiation. The initial silver nanoprisms were transformed into silver nanodisks gradually in the process of heating, which was possibly achieved through dissolving and readsorption of silver atoms on the surface of silver nanoplates. Subsequently, under light irradiation, the heating induced silver nanodisks were reversed to silver nanoprisms in the same solution. The dissolved oxygen was found to play a pivotal role in the shape conversion from nanoprism to nanodisk. In addition to heating, deionized water could induce the shape conversion of silver nanoplates when it was added to precipitate of the initial silver nanoprisms after centrifugation. Citrate in solution is essential to the photoinduced shape conversion process. Transmission electron microscopy (TEM) and extinction spectroscopy results demonstrated that localized surface plasmon resonance (LSPR) properties of silver nanoplates were effectively tuned through shape conversion.
History
Journal
ACS applied materials and InterfacesVolume
5Issue
3Pagination
646 - 653Publisher
American Chemical SocietyLocation
Washington, D.C.Publisher DOI
ISSN
1944-8244eISSN
1944-8252Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2013, American Chemical SocietyUsage metrics
Categories
No categories selectedKeywords
heating aginglight irradiationlocalized surface plasmon resonancenanodisksnanoprismsshape conversionsilver nanoparticlesScience & TechnologyTechnologyNanoscience & NanotechnologyMaterials Science, MultidisciplinaryScience & Technology - Other TopicsMaterials ScienceSURFACE-PLASMON RESONANCEOPTICAL-PROPERTIESMETAL NANOPARTICLESGROWTHSIZENANOSTRUCTURESSPECTROSCOPYCONVERSION