Journal
MATERIALS LETTERS
Volume 117, Issue -, Pages 116-119Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.11.123
Keywords
Ag@SiO2 core-shell nanoparticles; Colloidal synthesis; Surface plasmon resonance; Pulse electrophoresis deposition
Funding
- Ministry of Education and Human-Resource Development
- National Research Foundation (NRF) - Korea government (MEST) [NRF-2010-0019626, 2012M1A2A2671697]
- National Research Foundation of Korea [2012M1A2A2671697] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Ag@SiO2 cure shell nanoparticles (NPs) were synthesized by chemical reduction followed by the modified Stober method at room temperature and deposited on fluorine doped tin oxide (PTO) substrate using the pulse electrophoresis deposition (PED) method. The surface plasmon (SP) band of Ag NPs was red-shifted after silica coating. The Ag@SiO2 core-shell NPs (50-65 urn) was composed of 25-35 urn Ag NPs core and SiO2 shell thickness was controlled from 12 to 30 nm by controlling TEOS amount. PED was carried out in galvanostatic mode for uniform deposition of Ag@SiO2 core-shell NPs. The number of Ag@SiO2 core-shell NPs deposited on the substrate was increased with prolonged deposition time. (C) 2013 Elsevier By. All rights reserved.
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