Synthesis of NiS nanoparticles using a sugar-ester nonionic water-in-oil microemulsion

Khiew, P.S. and Huang, N.M. and Radiman, S. and Ahmad, M.S. (2004) Synthesis of NiS nanoparticles using a sugar-ester nonionic water-in-oil microemulsion. Materials Letters, 58 (5). pp. 762-767. ISSN 0167577X

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Abstract

Nickel sulfide (NiS) nanoparticles were prepared in water-in-oil (w/o) microemulsion system containing sucrose ester as the surfactants. The commercial food grade sucrose monoester (abbreviated S-1170) is a biodegradable and non-toxic surfactant, which can be adopted to form w/o microemulsion system in the presence of 1-butanol as co-solvent. The pseudo-ternary phase diagram for the inverse microemulsion region has been determined by the titration method. It was found that the studied system forms clear and homogenous microemulsion when heated to 37 °C but gradually becomes turbid at room temperature due to the phase separation. The as-prepared NiS nanoparticles were characterized by energy filter transmission electron microscopy (EFTEM), UV-VIS-NIR absorption spectroscopy and X-ray photoelectron spectroscopy (XPS). The results showed that the synthesized nanoparticles have regular shape, monodispersed and in the size range of 3-12 nm. © 2003 Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Electron microscopy Nanomaterials NiS Phase diagrams Sucrose ester X-ray techniques Biodegradation Esters Microemulsions Nickel compounds Sugars Surface active agents Synthesis (chemical) Transmission electron microscopy Turbidity Water X ray photoelectron spectroscopy Nanocrystals Quantum-size effects Nanostructured materials
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Dept of Physics
Depositing User: miss munirah saadom
Date Deposited: 04 Apr 2013 01:48
Last Modified: 04 Apr 2013 01:48
URI: http://eprints.um.edu.my/id/eprint/5359

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