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

被引：33

作者：

Bala, Tanushree ^{[1
,2
]}

Gunning, Robert Denis ^{[3
]}

Venkatesan, Munuswamy ^{[4
]}

Godsell, Jeffrey F. ^{[5
]}

Roy, Saibal ^{[5
]}

Ryan, Kevin M. ^{[1
,2
,3
]}

机构：

[1] Univ Limerick, Mat & Surface Sci Inst, Limerick, Ireland

[2] Univ Limerick, Dept Chem & Environm Sci, Limerick, Ireland

[3] Univ Limerick, SFI Strateg Res Cluster Solar Energy Res, Limerick, Ireland

[4] Trinity Coll Dublin, Sch Phys, Dublin 2, Ireland

[5] Natl Univ Ireland Univ Coll Cork, Tyndall Natl Inst, Microsyst Ctr, Cork, Ireland

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 41期

基金：

爱尔兰科学基金会;

关键词：

MAGNETIC NANOPARTICLES; NI-NANOPARTICLES; STRUCTURAL-CHARACTERIZATION; BIOMEDICAL APPLICATIONS; TRIBLOCK COPOLYMERS; METAL NANOPARTICLES; GOLD NANOPARTICLES; AMBIENT CONDITIONS; CHEMICAL-SYNTHESIS; SIZE;

D O I：

10.1088/0957-4484/20/41/415603

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper presents a facile method for decreasing the size of water dispersible Ni nanoparticles from 30 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 not only critically governed by the concentration of the triblock copolymers but also dependent on the hydrophobic nature of the micelle core formed. The synthesized Ni nanoparticles were thoroughly characterized by means of transmission electron microscopy, x-ray diffraction, x-ray photoelectron spectroscopy and temperature and field dependent magnetic measurements, along with a comprehensive Fourier transform infrared spectroscopy analysis, in order to predict a possible mechanism of formation.

引用

页数：11

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