Effect of amine groups in the synthesis of Ag nanoparticles using aminosilanes

A.FRATTINI; N. PELLEGRI; D. NICASTRO; O. DE SANCTIS

MATERIALS CHEMISTRY AND PHYSICS

Año: 2005 vol. 94 p. 148 - 152

0254-0584

Thiswork presents a simple method to produce silver nanoparticles throughAgNO3 chemical reduction in a continuous media. Aminosilanes act as catalytic reactors and superficial modifiers ofAgnanoparticles, inhibiting their growth and avoiding aggregation. Nanoparticles formation is studied by UV–vis spectroscopy, atomic force microscopy (AFM) and dynamic light scattering (DLS) techniques. The extent of the reduction reaction increases with either a higher aminosilane concentration or with aminosilanes with a higher number of amine groups. The number of amine groups in the aminosilane has also a strong effect on the size of the resulting Ag particles. The morphology of the Ag nanoparticles obtained is spherical and the mean size is of approximately 5 nm. © 2005 Elsevier B.V. All rights reserved. act as catalytic reactors and superficial modifiers ofAgnanoparticles, inhibiting their growth and avoiding aggregation. Nanoparticles formation is studied by UV–vis spectroscopy, atomic force microscopy (AFM) and dynamic light scattering (DLS) techniques. The extent of the reduction reaction increases with either a higher aminosilane concentration or with aminosilanes with a higher number of amine groups. The number of amine groups in the aminosilane has also a strong effect on the size of the resulting Ag particles. The morphology of the Ag nanoparticles obtained is spherical and the mean size is of approximately 5 nm. © 2005 Elsevier B.V. All rights reserved. act as catalytic reactors and superficial modifiers ofAgnanoparticles, inhibiting their growth and avoiding aggregation. Nanoparticles formation is studied by UV–vis spectroscopy, atomic force microscopy (AFM) and dynamic light scattering (DLS) techniques. The extent of the reduction reaction increases with either a higher aminosilane concentration or with aminosilanes with a higher number of amine groups. The number of amine groups in the aminosilane has also a strong effect on the size of the resulting Ag particles. The morphology of the Ag nanoparticles obtained is spherical and the mean size is of approximately 5 nm. © 2005 Elsevier B.V. All rights reserved. act as catalytic reactors and superficial modifiers ofAgnanoparticles, inhibiting their growth and avoiding aggregation. Nanoparticles formation is studied by UV–vis spectroscopy, atomic force microscopy (AFM) and dynamic light scattering (DLS) techniques. The extent of the reduction reaction increases with either a higher aminosilane concentration or with aminosilanes with a higher number of amine groups. The number of amine groups in the aminosilane has also a strong effect on the size of the resulting Ag particles. The morphology of the Ag nanoparticles obtained is spherical and the mean size is of approximately 5 nm. © 2005 Elsevier B.V. All rights reserved. act as catalytic reactors and superficial modifiers ofAgnanoparticles, inhibiting their growth and avoiding aggregation. Nanoparticles formation is studied by UV–vis spectroscopy, atomic force microscopy (AFM) and dynamic light scattering (DLS) techniques. The extent of the reduction reaction increases with either a higher aminosilane concentration or with aminosilanes with a higher number of amine groups. The number of amine groups in the aminosilane has also a strong effect on the size of the resulting Ag particles. The morphology of the Ag nanoparticles obtained is spherical and the mean size is of approximately 5 nm. © 2005 Elsevier B.V. All rights reserved. 3 chemical reduction in a continuous media. Aminosilanes act as catalytic reactors and superficial modifiers ofAgnanoparticles, inhibiting their growth and avoiding aggregation. Nanoparticles formation is studied by UV–vis spectroscopy, atomic force microscopy (AFM) and dynamic light scattering (DLS) techniques. The extent of the reduction reaction increases with either a higher aminosilane concentration or with aminosilanes with a higher number of amine groups. The number of amine groups in the aminosilane has also a strong effect on the size of the resulting Ag particles. The morphology of the Ag nanoparticles obtained is spherical and the mean size is of approximately 5 nm. © 2005 Elsevier B.V. All rights reserved.