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
Spectroscopic Investigation of Laser Treated Nano Material Lead Oxide L. Priyanga1, N. Ravi2 1M.Phil
Scholar, Department of physics, St. Joseph’s college, Thiruchirapalli – 620002 TN Department of physics, St. Joseph’s college, Thiruchirapalli – 620002 TN ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract-The study of nanoparticles and its influence 2.0 EXPERIMENTAL PROCEDURE 1Prof.
with laser plays a major role in material characterization. Particularly laser heat treatment on metal oxides give appreciable results in semi conducting materials. Semiconducting materials are low cost and have significant properties in laser material processing. Now in this study, we present the synthesis and influence of HeNe laser and diode laser treated nanoparticle PbO. Particle size, structure, peak value comparison, inter atomic spacing of samples with and without laser treatment are studied using XRD analysis. The results of UV and FTIR are also discussed. From the studies of UV the calculated band energy values for PbO is 5.3 to 6.3eV. FTIR study also confirms the presence of PbO nanoparticles. Keywords: Lead Oxide, laser Spectroscopy, FTIR, and XRD.
irradiaton,
UV-
1.0 INTRODUCTION In recent years, the synthesis and characterization of nanomaterials play an important role in material research as well as in different areas such as scientific and industrial applications [1].Also tremendous amount of work is going on in the preparation of nanoparticles towards nano technology with the use of laser heat treatment. The properties of various materials have been improved using low power lasers with different processing conditions. Lead oxide (PbO) nano particles have potential application in many fields such as lead acid or Li-based battery manufacturing industries [2].PbO particles have unique properties because of their application in luminescent materials, gas sensors, storage devices, UV blockers as well as modifiers in oxide glasses. A wide variety of physio- chemical properties including thermal decomposition, laser irradiation on lead nano particles have been used to produce nanometer sized lead oxides[3].In this work, lead oxide nano particles were synthesized through laser irradiation for different time exposures, the laser treated PbO particles were characterized by UV, FTIR Spectroscopy and X-ray diffraction studies. The band gap energy calculation for laser treated PbO samples were analyzed and investigated as well as compared their results with and without laser irradiated PbO nanoparticles [4]. © 2017, IRJET
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Commercially available PbO powder (Qualigens, 95% purity) is used for investigation (composition given in table 1). Laser treatments are carried out by using 5.0mW, He – Ne low power gas laser with red light of wavelength 633nm and diode laser with green light of 5mW power with wavelength 532nm. The structural analysis of with and without laser irradiated samples are analyzed using X – Ray diffractometer(P Analytical X – Ray diffractometer) with copper Kα radiation of wavelength λ as 1.5060A and 1.54443A.This spectrum recorded the intensity as a function of Bragg’s Angle. While the average crystalline size of the particle can be estimated using the full width at half maximum (FWHM) value of the X – Ray diffraction peaks [5].The optical and spectroscopic investigation of the samples such as UV and FTIR studies using Perkin Elmer FT – IR spectrometer [6].The laser processing parameters used for laser investigation of samples are given in table 2 and the properties of sample used is given in table 3. Table 1 Chemical composition of sample PbO. Element Lead Oxygen
Content 92.83 7.16
Table 2 Laser processing parameters of samples
Sample 1 2 3 4 5
He – Ne Laser irradiation Without laser 15 minutes 30 minutes -
ISO 9001:2008 Certified Journal
Green diode laser irradiation Without laser 15 minutes 30 minutes
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