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Erschienen in: Journal of Nanoparticle Research 1/2016

01.01.2016 | Research Paper

Morphology evolution of gold nanoparticles as function of time, temperature, and Au(III)/sodium ascorbate molar ratio

verfasst von: Ornella Priolisi, Alberto Fabrizi, Giovanna Deon, Franco Bonollo, Stefano Cattini

Erschienen in: Journal of Nanoparticle Research | Ausgabe 1/2016

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Abstract

In this work the morphology evolution of Au nanoparticles (AuNPs), obtained by direct reduction, was studied as a function of time, temperature, and Au(III)/sodium ascorbate molar ratio. The NPs morphology was examined by transmission electron microscope with image analysis, while time evolution was investigated by visible and near-infrared absorption spectroscopy and dynamic light scattering. It is found that initially formed star-like NPs transform in more spheroidal particles and the evolution appears more rapid by increasing the temperature while a large amount of reducing agent prevents the remodeling of AuNPs. An explication of morphology evolution is proposed.

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Metadaten
Titel
Morphology evolution of gold nanoparticles as function of time, temperature, and Au(III)/sodium ascorbate molar ratio
verfasst von
Ornella Priolisi
Alberto Fabrizi
Giovanna Deon
Franco Bonollo
Stefano Cattini
Publikationsdatum
01.01.2016
Verlag
Springer Netherlands
Erschienen in
Journal of Nanoparticle Research / Ausgabe 1/2016
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-015-3308-7

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