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FENG-XIANG CHEN1,* , FENG XIANG CHEN2, XI-CHENG WANG3, DONG-LIN XIA4, LI-SHENG WANG2
Core shell metal nanoparticles ( NPs are an emerging and active ar ea of contemporary science. In this paper, silver NPs with particle size of about 30 60 nm were firstly prepared by reducing agent of sodium citrate, then the Ag NPs were directly coated with silica by means of a seeded polymerization technique based on the modified Stöber method. The silica coating thickness was varied from 87 nm to 120 nm for TEOS concentration of 0.05 ml to 0.4 ml. The optical spectra of the silver silica core shell composite particles show a sensitive plasmon band to the shell thickne ss, and the experimental results agree with predictions by Mie theory qualitatively.
Silver, Silica, Core-shell, Surface plasmon resonance Mie theory.
FENG-XIANG CHEN, FENG XIANG CHEN, XI-CHENG WANG, DONG-LIN XIA, LI-SHENG WANG, P reparation and optical properties of Ag@SiO2 core shell nanoparticles, Optoelectronics and Advanced Materials - Rapid Communications, 9, 7-8, July-August 2015, pp.986-989 (2015).
Submitted at: April 7, 2015
Accepted at: June 24, 2015
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
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