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Journal of Nanomaterials
Volume 2014, Article ID 503676, 7 pages
http://dx.doi.org/10.1155/2014/503676
Research Article

Synthesis and Characterization of Nanostructured Nickel Diselenide NiSe2 from the Decomposition of Nickel Acetate, (CH3CO2)2Ni

1GE Global Research, 1 Research Cir, Schenectady, NY 12309, USA
2Chemistry Department, The City College of New York, City University of New York, 160 Convent Avenue, New York, NY 10031, USA

Received 5 February 2014; Accepted 21 July 2014; Published 19 August 2014

Academic Editor: Jijun Qiu

Copyright © 2014 Ming Yin and Stephen O’Brien. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Solution processed NiSe2 nanorods were synthesized by a modified colloidal synthesis technique, by chemical reaction of TOPSe and nickel acetate at . The rods exist as an oleic acid ligand stabilized solution, with oleic acid acting as a capping group. Structural characterization by X-ray diffraction and transmission electron microscopy indicates that the particles are rod-like shaped crystals with a high and relatively constant aspect ratio (30 : 1). TEM shows that the width and the length of the nanorods are in the range 10–20 nm and 300–350 nm, respectively. XRD indicates that the nanorods are pure and well crystallized. The size of nanorods based on the Debye-Scherrer effect, was 150 nm, the average value of length and width. They display thermal stability over prolonged heating times (<100 hours) at , for which the average particle size is roughly constant. After about 100 hours of heating time there is an onset and growth of micron sized cubes and concurrent decomposition of NiSe2 to Ni and NiSe at .