Reflective Characteristics of Ni Doped Zns Nanoparticle-Pigment And Their Coatings

Kumar, Sanjeev and Verma, N.K. and Singla, M.L. (2011) Reflective Characteristics of Ni Doped Zns Nanoparticle-Pigment And Their Coatings. Chalcogenide Letters, 8 (9). pp. 561-569. ISSN 1584-8663

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The influence of Ni concentration (0 – 0.100%) on the reflective properties of ZnS nanoparticle-pigment as well as on their reflective coatings has been investigated. ZnS nanoparticles synthesized via chemical precipitation method were characterized by using X-ray diffraction (XRD), energy dispersive X-ray spectroscope (EDS), scanning electron microscope (SEM), transmission electron microscope (TEM), UV-Vis absorption, fluorospectrophotometer, and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). It has been found that with the increase in the dopant concentration form 0 – 0.100%, the crystallite of ZnS particles changes from 10.00 to 3.01 nm and photocatalytic activity decreases. The structure and morphology remains virtually unchanged as well as no absorption edge in absorption spectra and luminescent peak in the luminescent spectra was observed due to doping. On comparing the diffuse reflectance, ZnS nanoparticles with 0.005% Ni, found to possess maximum diffuse reflectance, 92.51 - 97.77%. Employing these nanoparticles as reflective pigment, coating material was prepared and applied on aluminium substrate with different coating thicknesses to develop reflectors. These reflectors show maximum diffuse reflectance, 98.72 - 99.43%, for the 0.2 mm thick coating.

Item Type: Article
Uncontrolled Keywords: ZnS nanoparticles; Doping; Coatings; Reflectors, UV-visible diffuse reflectance spectroscopy
Subjects: CSIO > Nano Science and Nano Technology
Depositing User: Ms. J Shrivastav
Date Deposited: 22 Apr 2012 22:48
Last Modified: 22 Apr 2012 22:48

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