International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 04 Special Issue: 09 | Sep -2017
p-ISSN: 2395-0072
www.irjet.net
One Day International Seminar on Materials Science & Technology (ISMST 2017) 4th August 2017 Organized by
Department of Physics, Mother Teresa Women’s University, Kodaikanal, Tamilnadu, India
INVESTIGATIONS ON THE PROPERTIES OF COPPER SULPHIDE NANOPARTICLES S.Deepapriya1, L. Ansel Mely1, P.Annie Vinosha1, John.D.Rodney1, S.Lakshmi Devi2, S. Jerome Das1*. Department of Physics, Loyola College, Chennai, India 600 034. Department of PG Physics, Women’s Christian College, Chennai, India 600 006. Corresponding author email: deepysubramaniyan@gmail.com ; jeromedas.s@gmail.com --------------------------------------------------------------***--------------------------------------------------------------------1*,
2,
Abstract - Nanotechnology has gained mammoth attention
in the recent decades, due to its enhanced light absorption which can be used for the rationale deployment of light energy and ought to have reflective collision on countless interrelated areas of discipline in technology. Copper sulphide nanoparticles for advanced environmental applications were synthesized by a facile solvothermal route using copper and sulphide as precursor. The effect of the precursors morphological and optical properties was studied. The assynthesized nanoparticles were analysed using X-ray Diffraction, Transmission electron microscope, UV-visible and Photoluminescence. The phase formation of the nanosized CuS particles were examined using X-ray diffraction and the crystallite size was found to be around 19nm. The morphology of the agglomerated CuS nanoparticles was depicted from TEM micrograph. The optical properties of the as-synthesized nanoparticle were revealed by Uv-visible spectra and PL spectra. The band gap was calculated using Kubelka-Munk plot and the band gap was found to be 2.02 eV. KeyWords: Copper Sulphide(CuS), Technique, Nanoparticle.
Solvothermal
1. INTRODUCTION Copper Sulphide is known to subsist for a numerous choice of stable and unstable phases and it is a p-type Semi conductor [1]. Copper -based nanoparticles are of enormous interest due to their low cost as well as easily available and its belongs to a family of chemical compounds and minerals with the formula CuS. They occurs naturally in environment as a mineral called covellite[2]. It conducts electricity reasonably in both minerals and synthetic materials encompass these compounds [3]. Some copper sulphide are efficiently important ores. Prominent copper sulphide minerals include Cu2S (chalcocite) and CuS (covellite). In the progress of mineral industry, the minerals bornite or chalcopyrite, which consist of mixed copper-iron sulphides, are often referred to as "copper © 2017, IRJET
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sulphides" with a crystal structure varying from orthogonal to hexagonal [4,5]. In the present study solvothermal method of synthesis had been adopted to synthesize copper monosulphide nanoparticles since this method provides a superior nucleation control while eliminating the contamination rate.
2. EXPERIMENTAL PROCEDURE Copper and Sulphide were the Precursors used where in Copper was obtained from Copper Chloride dihydrate and sulphide from thiourea, Precussor were taken in the Ratio 1:3 that is 1.27 gram of Copper Chloride dehydrate was dissolved in 75 ml ethanol using magnetic stirrer. The mixing process of one liquid with another was done with great accuracy were the second liquid was mixed drop by drop with the continuous stirring using a Magnetic Stirrer. The obtained solution were poured into a autoclave and placed in the muffle furnance for 6 hr at a temperature 200 0C for the formation of CuS nanoparticles took place under a controlled and contamination-free environment, After six hours the autoclave was allowed to cool down naturally to ambient room temperature. The dark green precipitate thus obtained was washed by centrifugation with the help of double distilled water and absolute ethanol to remove the chloride impurities present in the sample and the product obtained was consequently allowed to dry overnight in a hot air oven at 80 ºC. The green solids obtained were ground well in a granite mortar to attain fine grained nano CuS particles.
3. RESULTS AND DISCUSSIONS 3.1 X-ray Diffraction The crystalline of the nanosized CuS particles were examined using X-ray diffraction (XRD) patterns, recorded by Scifert analysis with Cuk radiation (λ=1.5406Å) in the 2θ range 20° to 70°.Which shows the XRD patterns of the synthesized samples CuS nanoparticles synthesized with the ISO 9001:2008 Certified Journal
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