New surface-directed vapour transport methods for the controlled growth of nickel sulfide nanomaterials

Denholme, S.J., Gallagher, J.B., Dobson, P.S. , Weaver, J.M.R. and Gregory, D.H. (2010) New surface-directed vapour transport methods for the controlled growth of nickel sulfide nanomaterials. Israel Journal of Chemistry, 50(4), pp. 515-523. (doi:10.1002/ijch.201000061)

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Abstract

Highly symmetrical, isotropic nickel disulfide (NiS2) nanocubes have been synthesised via a Physical Vapour Transport (PVT) method in which sulfur vapour generated in situ is reacted with nickel coated silica substrates Systematic studies demonstrate the effect of the reactant ratio, substrate, metal layer thickness, and reaction temperature on the synthesis and growth process The evolution of structure and composition has been followed by diffraction and electron microscopy techniques, and the size of the NiS2 cubes can be varied from below 200 nm to 1-2 mu m across Magnetic properties of the disulfide nanomaterials have been determined using SQUID magnetometry Initial experiments also demonstrate that related Chemical Vapour Transport (CVT) techniques can be exploited to produce alternative compositions in the Ni-S system with varying morphologies that can be controlled via chemical and physical reaction parameters.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Weaver, Professor Jonathan and Gregory, Professor Duncan and Dobson, Dr Phil
Authors: Denholme, S.J., Gallagher, J.B., Dobson, P.S., Weaver, J.M.R., and Gregory, D.H.
College/School:College of Science and Engineering > School of Chemistry
College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Israel Journal of Chemistry
ISSN:0021-2148
Published Online:02 November 2010

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