Article ID Journal Published Year Pages File Type
1650970 Materials Letters 2008 4 Pages PDF
Abstract

One novel and convenient synthetic approach has been proposed to prepare the transition metal dichalcogenide material of nanocrystalline nickel disulfide (NiS2) by the solid-state reaction between basic nickel carbonate and elemental sulfur at 400 °C. The as-synthesized product is characterized by X-ray powder Diffraction (XRD), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS) and Low-temperature N2 Adsorption (BET method). TEM micrographs show that the as-synthesized NiS2 has nanostructures with the average particle size of 48 nm. The sulfur-to-nickel ratio of the sample determined by XPS is 1.70, which indicates that the surface of the sample is rich in Ni4+. The probable formation mechanism of nanocrystalline NiS2 is discussed in this manuscript.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
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