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Ahirrao P.B.,Svss Arts And Science College | Sankapal B.R.,North Maharashtra University | Patil R.S.,P.A. College
Journal of Alloys and Compounds | Year: 2011

Nanocrystalline cuprous oxide (Cu 2O) thin films were synthesized on amorphous glass substrate by using simple room temperature chemical route namely, chemical bath deposition (CBD) method. The deposition kinetics played important role to get good quality nanocrystalline films with uniform thickness. The structural, surface morphological, optical and electrical properties of the films were investigated. Crystallization and growth processes obtained micro-spherical shaped grains of Cu 2O due to agglomeration of smaller nanoparticles. An optical and electrical characterization was performed to study the optical band gap and type of electrical conductivity of the film. © 2011 Elsevier B.V. All rights reserved. Source


Girase K.D.,Svss Arts And Science College
Journal of Nano- and Electronic Physics | Year: 2013

Gel grown lead iodate crystals doped by 0.04 M cobalt were characterized by Raman, Fourier transform infrared (FT-IR) spectroscopy and thermo analytical techniques (thermogravimetric and differential thermal analyses). The Fourier transforms infrared and Raman spectrum reveals various vibrational modes characterizing particular functional group. The investigation confirms the existence of iodate group. Thermal analysis shows that thermal stability of lead iodate crystals decreases slightly due to cobalt doping. The effect of doping is reported and discussed in detailed. © 2013 Sumy State University. Source


Girase K.D.,Svss Arts And Science College | Bhavsar D.S.,P.A. College
Journal of Thermal Analysis and Calorimetry | Year: 2011

The Pb(IO3)2 crystals have been grown in sodium meta silicate gel using the single diffusion method at room temperature. The grown crystals were characterized by thermo analytical techniques (TG, DTA, and DTG), X-ray powder diffraction (XRD), and FTIR spectroscopy. The crystal system is confirmed to be orthorhombic having lattice parameters a = 6.09 Å, b = 16.68 Å, and c = 5.58 Å by powder X-ray diffraction analysis. FTIR study reveals that lead iodate crystal is anhydrous. TG, DTA, and DTG analysis shows a remarkable thermal stability. © 2011 Akadémiai Kiadó, Budapest, Hungary. Source


Rajput A.P.,P.A. College | Girase P.O.,Svss Arts And Science College
Indian Journal of Heterocyclic Chemistry | Year: 2012

Various 2,6-dichloro-1-(N-substituted phenyl)-1,4-dihydropyridine-3,5- dicarbaldehydes were synthesized in two steps using moderate conditions and 3,5-diformyl groups were transformed into different functionalities. The synthesized compounds were screened for their antimicrobial activity against Esctierichia coli, Pseudomonas aeruginosa, Bacillus subtilis. Staphylococcus aureus, Aspergillus niger and Candida albicans using agar diffusion assay method The results were compared with respective standards nystatin and chloramphenicol. Except one compound IVa (iii), all the compounds showed moderate to good antimicrobial activity and seventeen compounds have been found more potent than standard drugs. Source


Sawant D.K.,Science and Commerce College | Patil H.M.,Science and Commerce College | Bhavsar D.S.,Pratap College | Girase K.D.,Svss Arts And Science College
Journal of Thermal Analysis and Calorimetry | Year: 2012

In this study, calcium cadmium tartrate single crystals were grown in silica gel at ambient temperature. Effects of various parameters like gel pH, gel aging, gel density, and concentration of reactants on the growth of these crystals were studied. Crystals having different morphologies and habits were obtained. Transparent, diamondlike pyramidal-shaped crystals of calcium cadmium tartrate were obtained. Some of the crystals obtained were faint yellowish, with some milky white crystals being attched to them due to fast growth rate; faces are well developed and polished. The grown crystals were characterized by thermoanalytic techniques (TG, DTA, and DTG), and powder X-ray diffraction (XRD). The crystal system is confirmed to be orthorhombic having lattice parameters a = 7.9411 Å , b = 7.0396 Å , and c = 6.7271 Å as determined by powder XRD analysis. TG, DTA, and DTG analyses show a remarkable thermal stability. The results of these observations are described and discussed. © Akadémiai Kiadó, Budapest, Hungary 2011. Source

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