Title : ( Gradual Growth of Gold Nanoseeds on Silica for Silica@GoldCore-Shell Nanoparticles and Investigation of Optical Properties )
Authors: mozhgan kazemzadeh otoufi , Nasser Shahtahmassebi , Ahmad Kompany , Elaheh Kafshdare Goharshadi ,
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Abstract
Metal nanoshells consists of a dielectric core surrounded by a thin noble metal shell, possess unique optical properties that render nanoshells attractive for use in different technologies. This paper reports a facile method for growth of small gold nanoparticles on the functionalized surface of larger silica nanoparticles. Mono-dispersed silica particles and gold nanoparticles were prepared by the chemical reduction method. The size of the shell nanoseeds could be altered by repeating the stage of reducing HAuCl4 on Au/APTES/silica particles, and the time for which they react. The nanocore-shell particles prepared were studied using scanning electron microscopy (TEM), UV–Vis spectroscopy, Fourier transform infrared spectroscopy (FTIR) and PL spectrophotometer. The TEM images indicated that by growing gold nano-seeds over the silica cores a red shift in the maximum absorbance
Keywords
, Core, shell; Silica; Gold; Nanoparticle; Surface functionalized; Initial growth.
@article{paperid:1043051,
author = {Kazemzadeh Otoufi, Mozhgan and Shahtahmassebi, Nasser and Kompany, Ahmad and Kafshdare Goharshadi, Elaheh},
title = {Gradual Growth of Gold Nanoseeds on Silica for Silica@GoldCore-Shell Nanoparticles and Investigation of Optical Properties},
journal = {International Journal of Bio-Inorganic Hybrid Nanomaterials},
year = {2013},
volume = {2},
number = {4},
month = {November},
issn = {2251-8533},
pages = {477--483},
numpages = {6},
keywords = {Core-shell; Silica; Gold; Nanoparticle; Surface functionalized; Initial growth.},
}
%0 Journal Article
%T Gradual Growth of Gold Nanoseeds on Silica for Silica@GoldCore-Shell Nanoparticles and Investigation of Optical Properties
%A Kazemzadeh Otoufi, Mozhgan
%A Shahtahmassebi, Nasser
%A Kompany, Ahmad
%A Kafshdare Goharshadi, Elaheh
%J International Journal of Bio-Inorganic Hybrid Nanomaterials
%@ 2251-8533
%D 2013
