Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242835
Type: Artigo de periódico
Title: Synthesis Of Ag@silica Nanoparticles By Assisted Laser Ablation
Author: Gonzalez-Castillo
J. R.; Rodriguez
E.; Jimenez-Villar
E.; Rodriguez
D.; Salomon-Garcia
I.; de Sa
Gilberto F.; Garcia-Fernandez
T.; Almeida
D. B.; Cesar
C. L.; Johnes
R.; Ibarra
Juana C.
Abstract: This paper reports the synthesis of silver nanoparticles coated with porous silica (Ag@Silica NPs) using an assisted laser ablation method. This method is a chemical synthesis where one of the reagents (the reducer agent) is introduced in nanometer form by laser ablation of a solid target submerged in an aqueous solution. In a first step, a silicon wafer immersed in water solution was laser ablated for several minutes. Subsequently, an AgNO3 aliquot was added to the aqueous solution. The redox reaction between the silver ions and ablation products leads to a colloidal suspension of core-shell Ag@Silica NPs. The influence of the laser pulse energy, laser wavelength, ablation time, and Ag+ concentration on the size and optical properties of the Ag@Silica NPs was investigated. Furthermore, the colloidal suspensions were studied by UV-VIS-NIR spectroscopy, X-Ray diffraction, and high-resolution transmission electron microscopy (HRTEM).
Subject: Pbte Quantum Dots
Silver Nanoparticles
Liquid Environment
Fabrication
Reduction
Country: NEW YORK
Editor: SPRINGER
Citation: Synthesis Of Ag@silica Nanoparticles By Assisted Laser Ablation. Springer, v. 10, p. OCT-2015.
Rights: aberto
Identifier DOI: 10.1186/s11671-015-1105-y
Address: http://nanoscalereslett.springeropen.com/articles/10.1186/s11671-015-1105-y
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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