Block copolymer mediated stabilization of sub-5 nm superparamagnetic nickel nanoparticles in an aqueous medium

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Title: Block copolymer mediated stabilization of sub-5 nm superparamagnetic nickel nanoparticles in an aqueous medium
Authors: Bala, Tanushree
Gunning, Robert Denis
Venkatesan, Munuswamy
Godsell, Jeffrey F.
Roy, Saibal
Ryan, Kevin M.
Permanent link: http://hdl.handle.net/10197/2715
Date: 14-Oct-2009
Abstract: The paper presents a facile method for decreasing the size of water dispersible Ni nanoparticles from 30 nm to 3 nm by the incorporation of a passivating surfactant combination of pluronic triblock copolymer and oleic acid into a wet chemical reduction synthesis. A detailed study revealed that the size of the Ni nanoparticles is critically governed not only by the concentration of the tri block copolymers but also dependent on the hydrophobic nature of the micelle-core formed. The synthesized Ni nanoparticles were thoroughly characterized by TEM, XRD, XPS and temperature and field dependent magnetic measurements along with a comprehensive FTIR analysis to predict a possible mechanism of formation.
Funding Details: Science Foundation Ireland
Higher Education Authority
Irish Research Council for Science, Engineering and Technology
Other funder
Type of material: Journal Article
Publisher: IOP Science
Copyright (published version): 2009 IOP Publishing Ltd
Keywords: Ni nanoparticles;Pluronic
Subject LCSH: Nanoparticles
Nickel
DOI: 10.1088/0957-4484/20/41/415603
Language: en
Status of Item: Peer reviewed
Appears in Collections:Solar Energy Conversion (SEC) Cluster Research Collection

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