title: Synthesis of Ag@Silica Nanoparticles by Assisted Laser Ablation.
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).
authors.affiliation: Instituto Politécnico Nacional, CICATA U. Altamira, Altamira, CP 89600, México. jgonzalezc1300@alumno.ipn.mx.
authors.forename: J R
authors.initials: JR
authors.lastname: González-Castillo
authors.affiliation: Instituto Politécnico Nacional, CICATA U. Altamira, Altamira, CP 89600, México.
authors.forename: E
authors.initials: E
authors.lastname: Rodriguez
authors.affiliation: Universidade Federal de Pernambuco, DQF, Recife, CP 50670-901, Brazil.
authors.forename: E
authors.initials: E
authors.lastname: Jimenez-Villar
authors.affiliation: Departamento de Investigación Aplicada, Driscoll's-México, Jalisco, CP 45050, México.
authors.forename: D
authors.initials: D
authors.lastname: Rodríguez
authors.affiliation: Instituto Politécnico Nacional, CICATA U. Altamira, Altamira, CP 89600, México.
authors.forename: I
authors.initials: I
authors.lastname: Salomon-García
authors.affiliation: Universidade Federal de Pernambuco, DQF, Recife, CP 50670-901, Brazil.
authors.forename: Gilberto F
authors.initials: GF
authors.lastname: de Sá
authors.affiliation: Universidad Autónoma de la Ciudad de México, México DF, CP 09790, México.
authors.forename: T
authors.initials: T
authors.lastname: García-Fernández
authors.affiliation: Universidade Estadual de Campinas, IFGW-DEQ, Campinas, CP 13083-859, Brazil.
authors.forename: D B
authors.initials: DB
authors.lastname: Almeida
authors.affiliation: Universidade Estadual de Campinas, IFGW-DEQ, Campinas, CP 13083-859, Brazil.
authors.forename: C L
authors.initials: CL
authors.lastname: Cesar
authors.affiliation: Instituto Politécnico Nacional, CICATA U. Altamira, Altamira, CP 89600, México.
authors.forename: R
authors.initials: R
authors.lastname: Johnes
authors.affiliation: Instituto Politécnico Nacional, CICATA U. Altamira, Altamira, CP 89600, México.
authors.forename: Juana C
authors.initials: JC
authors.lastname: Ibarra
keywords: Assisted laser ablation; Core-shell nanoparticles; Silver nanoparticles; Surface plasmon resonance