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• Open Access   Article

  Novel Synthesis of Optical, Photoluminescence Properties and Supercapacitor Application on Zn2+ doping Sn1-xZnxO2 nanoparticles

  S. Sivakumar, E. Manikandan

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.1-13, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.113

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  Abstract
  In this research on (0.00, 0.025, 0.045, 0.065 M %) Zn/SnO2 nanoparticles have been prepared effectively chemical precipitation route on different doping concentration of zinc from 0.00 to 0.065%. XRD results showed the crystalline nature for different doping concentrations that are existed as a tetragonal structure. HR-TEM investigation of pictures confirms the presence of very little, homogeneously dispersed, and spherical shapes are observed. The crystallite size is calculated using the Scherrer formula and was formed in the size of nanoparticles range from 11.6 nm to 42.0 nm. The presence of dopant (i.e. Zn) and arrangement of Sn to O phase and hydrous nature of Zn/SnO2 nanoparticles are confirmed by EDX and FTIR (O-Sn-O stretching) investigations. The band gap value is observed from 3.20 eV to 3.50 eV in undoped and Zn/SnO2 nanoparticles, Due to the large grain size. The grains size develops so deformity density decreases and increases crystalllinity. These defects act as luminescent focuses and cause a decrease in emission intensity and increase in the band gap. The cyclic voltammetry investigation is a specific capacitance value, calculate as 496 F/g and 572 F/g was obtained at a scan rate 5 mV/s for undoped and (0.025 M %) Zn/SnO2 nanoparticles it’s suitable for supercapacitor applications

  Key-Words / Index Term
  Zn/ nanoparticles, XRD, SEM, HR-TEM, UV-DRS, PL and CV

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  Citation
  S. Sivakumar, E. Manikandan, "Novel Synthesis of Optical, Photoluminescence Properties and Supercapacitor Application on Zn2+ doping Sn1-xZnxO2 nanoparticles," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.1-13, 2018

• Open Access   Article

  Effective Average Correlation Factor and Excess Permittivity for Dielectric Studies on Binary Systems of Phthalates with Alcohols and Nitriles

  RM. Umamaheshwari, K. Sathish kumar, M. Subramanian

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.14-25, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.1425

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  Abstract
  The determination of the structure and properties of associated liquids could provide deeper insight into the phenomenon of the molecular interactions and is of great importance in biology and chemical physics. Dielectric constant measurements have been extensively used to obtain the electric dipole moment of molecules with the object of determining the polarities of their bonds, geometrical structures of the molecules and significant shifts of the electric charge in them. Dielectric parameters such as Kirkwood correlation factor, effective correlation factor, corrective correlation factor and thermo dynamical excess parameters for a mixture of diethyl phthalate with isobutanol and benzonitrile were determined at 303 k, 313 k and 323 k. The results were interpreted accordingly

  Key-Words / Index Term
  Dielectric constant, Kirkwood correlation, Effective correlation, Phthalates, Isobutanol, Benzonitrile

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  Citation
  RM. Umamaheshwari, K. Sathish kumar, M. Subramanian, "Effective Average Correlation Factor and Excess Permittivity for Dielectric Studies on Binary Systems of Phthalates with Alcohols and Nitriles," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.14-25, 2018

• Open Access   Article

  Study on some physical and optical properties of alkaline alumino borate glasses doped with Mn2+ ions

  Mohamad Raheem Ahmed, Md Shareefuddin

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.26-33, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.2633

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  Abstract
  Alkaline alumino borate glasses have composition (30-x) MO-xAl2O3-69.5B2O3-0.5MnO2 (0 ≤ x≤ 15 mol %) ( where MO=SrO, BaO). These glasses were prepared by melt quenching process. For these glasses, density was calculated using Archimedes principle. Variation in the density and molar volume was explained on the base of the bond length of Al-O and B-O. The values of polaron radius increases and field strength (F) decreases are attributed to the open structure. From optical absorption spectra, it was observed that broad absorption peak at 470 nm is due to the transition of Mn3+ ions from 5Eg → 5T2g in the octahedral site. Optical band gap (Eg) and Urbach energy (ΔE) were calculated. It results in the creation of non-bridging oxygens (NBO’s) in the present glass system

  Key-Words / Index Term
  Alkaline alumino glasses, Borate glasses, Physical properties, Optical properties

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  Citation
  Mohamad Raheem Ahmed, Md Shareefuddin, "Study on some physical and optical properties of alkaline alumino borate glasses doped with Mn2+ ions," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.26-33, 2018

• Open Access   Article

  Effect of temperature on optical properties of CuInS2 thin films

  A. S. Meshram, Y. D. Tembhurkar, O. P. Chimankar

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.34-41, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.3441

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  Abstract
  Polycrystalline CuInS2 thin films were grown by Spray pyrolysis method. This films have been deposited onto the glass substrate by varying substrate temperature from 2750C, at the interval of 25 to 3500C by using aqueous solution of Cupric chloride, Indium tri-chloride and thiourea of 0.02 M and Seems to be more important parameters affecting physical properties of the semiconductor. On account for the temperature dependent optical properties of polycrystalline CuInS2 thin films, grain boundary states were operative in nature. The values of absorption coefficient, extinction coefficient, refractive index, and dielectric constant have been calculated from the optical measurements. The prepared films at different substrate temperatures were found to have high transmittance (76 %) with the lowest thickness approximately t = 0.126 μm and at low transmittance (50 %) of the films with highest thickness nearly equal to t = 0.2163 μm. Due to temperature variation, the atoms are arrange regular in manner compound of CuInS2 films are investigates. As the films are not doped intentionally, defect observed in intrinsic nature by Sulphur interstitials. The most significant results in present study, the temperature varied with thickness of the film can be used to modify the optical band gap, extinction coefficient, refractive index and real-imaginary part of dielectric constants of CuInS2 thin films.

  Key-Words / Index Term
  Spray pyrolysis, CuInS2 Ternary Semiconductor, Optical Constants

  References
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  Citation
  A. S. Meshram, Y. D. Tembhurkar, O. P. Chimankar, "Effect of temperature on optical properties of CuInS2 thin films," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.34-41, 2018

• Open Access   Article

  Structural, Electrical and Photoresponse Studies of Ni Doped CdS Thin Films for Opto-electronic Applications

  R. Premarani, S. Saravanakumar, R. Chandramohan, J. Jebaraj Devadasan

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.42-47, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.4247

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  Abstract
  The pristine and Ni doped CdS polycrystalline thin films were grown on to glass substrates by Chemical Bath Deposition (CBD) method. The deposition bath contains cadmium chloride (as a source for cadmium ions), thiourea (as a source for sulfur ions), ammonium chloride, EDTA and ammonium hydroxide. The as prepared CdS films were annealed in air at 300 °C for 60 minutes and the as prepared films were characterized structural, morphological, elemental and electric properties. From XRD patterns, all the films exhibit hexagonal phase with (0 0 2) as preferential orientation and the estimated crystallite size were 29 nm and 18 nm for undoped and Ni doped CdS films. SEM images showed that the spherical like grains were formed in the films. Energy dispersive X-ray study confirmed the presence of Cd, S and Ni in the films. From the electrical studies, Ni doped CdS thin films carrier concentrations were increased with the increased Ni concentrations. The higher effective quantum efficiency (EQE) value is obtained for fabricated p-Si/n-Ni:CdS (Ni dopant at 0.08 M) hybrid heterojunctions photo detectors device. Those results could be applied in other CdS-based cells, for more effective PV and photo diode conversion device and other applications that require such properties

  Key-Words / Index Term
  CBD, pristine, opto-electronics, heterojunction and photo response

  References
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  Citation
  R. Premarani, S. Saravanakumar, R. Chandramohan, J. Jebaraj Devadasan, "Structural, Electrical and Photoresponse Studies of Ni Doped CdS Thin Films for Opto-electronic Applications," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.42-47, 2018

• Open Access   Article

  Phase Transition and Thermodynamic Parameters of Liquid Crystalline Mixtures – A Dilatometric Study

  Shahina, C. M. Subhan and K. Fakruddin

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.48-56, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.4856

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  Abstract
  In the present work heptyl amino methyl-hydxoy phenoxy biphenyl carbonitrile Liquid crystals of spacer length n=6, 7 and hexyloxy benzylidene amino phenyl benzoates of terminal group m=10, 13 are choosen. Each of the above two series of compounds are taken in equal concentration and their mixtures C1 and C2 are prepared. The transition temperatures and optical textures of these mixtures are recorded by using polarizing optical microscope. The temperature variation of density is measured by dilatometer. The density and thermal expansion coefficient results reveals that the mixture C1 exhibits nematic, smectic A and smectic B phases, the mixture C2 exhibits only nematic and smectic A phases. The temperature dependence of number of thermodynamic parameters viz., Moelwyn-Hughes parameter, Beyer’s nonlinearity parameter , the reduced molar volume, Sharma parameter, fractional free volume, isothermal, isobaric, isochoric Gruneisen parameters etc., are estimated. The results reveal that all the thermo dynamical parameters show characteristic changes in the vicinity of phase transformation. The results are discussed based on the data obtained

  Key-Words / Index Term
  Liquid crystalline mixtures, optical textures, phase transitions, density, thermal expansion coefficient and thermodynamic parameters

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  Citation
  Shahina, C. M. Subhan and K. Fakruddin, "Phase Transition and Thermodynamic Parameters of Liquid Crystalline Mixtures – A Dilatometric Study," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.48-56, 2018

• Open Access   Article

  Biosynthesis of colloidal Copper Oxide Nanoparticles using Manilkara hexandra (Roxb.) Dubard leaf extract and its Physicochemical Characterization and Pharmaceutical Evaluation

  A Antony Lawrence, J Thomas Joseph Prakash

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.57-68, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.5768

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  Full-Text HTML

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  Abstract
  In the present investigation, plant mediated bio-synthesis of copper oxide nanoparticles is synthesized using Manilkara hexandra leaf extract and were further characterized using Fourier transform infrared spectroscopy (Presence of bio-molecules), UV-vis spectroscopy (250-300 nm), Field electron scanning electron microscope (30 to 60 nm), Energy dispersive x-ray analysis (Cu, O elements), X-ray diffraction analysis (face-centered cubic structure ), Particle size analyser (343 nm) , Zeta potential (-9.50mV). The Thermogravimetry/Differential Thermal Analysis and Differential scanning calorimetry is also examined to find the stability of materials. This confirms that copper oxide nanoparticles are well formed and synthesized. They are further tested with anti-microbial assays and antioxidant evaluation (DPPH method in-vitro) these reports show high estimation. This confirms that the copper oxide nanoparticles can be produced in large scale and can be implied for prevention of food , crops and drug delivery system.

  Key-Words / Index Term
  Manilkara hexandra, Copper oxide nanoparticles, Anti-microbial assays, DPPH method

  References
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  Citation
  A Antony Lawrence, J Thomas Joseph Prakash, "Biosynthesis of colloidal Copper Oxide Nanoparticles using Manilkara hexandra (Roxb.) Dubard leaf extract and its Physicochemical Characterization and Pharmaceutical Evaluation," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.57-68, 2018

• Open Access   Article

  MnO2-ZnO Hexagonal Nanomaterials: Characterization and High Performance Humidity Sensing Application

  Vikas Kumar Verma, Narendra Kumar Pandey

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.69-79, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.6979

  Abstract

  Full-Text HTML

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  Citation

  Abstract
  MnO2 doped nanostructured zinc oxide was synthesized by solid state reaction route. The prepared material was characterized by X-ray diffraction, scanning electron microscope and UV-Vis absorption spectroscopy. The doping of MnO2 in ZnÒ enhanced the crystallization and decreased the crystallite size. Surface morphology of the sensing material showed that the hexagonal shaped particles were uniformly distributed in zinc oxide that left large number of pores. These pores acted as humidity adsorption sites. With increase in the concentration of MnO2, the pores also increased. The optical band gap of pure ZnO was 4.05 eV. The value of band gap decreased with increase in the MnO2 doping concentration. The average sensitivity of undoped zinc oxide was 3400 KΩ/%RH. The sensitivity of the sensing element increased with increase in the doping concentration. Sensitivity of MnO2 doped ZnO composite is more than four times the sensitivity of pure zinc oxide at annealing temperature 600oC.

  Key-Words / Index Term
  Humidity Sensor; Zinc oxide; X-ray diffraction; Scanning electron microscopy; UV-Vis Spectroscopy.

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  Citation
  Vikas Kumar Verma, Narendra Kumar Pandey, "MnO2-ZnO Hexagonal Nanomaterials: Characterization and High Performance Humidity Sensing Application," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.69-79, 2018

• Open Access   Article

  Structural, Optical and Electrical conductivity Studies of Mn2+ Ions Doped PVA/MAA:EA Polymer Blend Films

  Ojha Pravakar , T. Siddaiah , N.O. Gopal, Ch. Ramu

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.80-87, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.8087

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  Abstract
  Pure and different concentrations of Mn2+ (1.0, 2.0, 3.0, 4.0 and 5.0 mol%) doped PVA/MAA:EA polymer blend films were prepared by solution casting method. The structural analysis of the prepared samples by X-ray Diffraction reveals broadening of diffraction peak which implies a lower degree of crystallinity with higher Mn2+ concentration. UV-Vis spectral analysis shows a significant red shift in the optical band gap with increase in Mn2+ concentration. FTIR spectrum exhibits bands characteristic of stretching and bending vibrations O–H, C–H, C=C and C–O groups and the changes in the FTIR spectrum with dopant concentration indicate the complexation of dopant with the polymer blend. The conductivity study shows that the doping of Mn2+ ions into the polymer blend system enhances its ionic conductivity from 2.46 X 10-8 Scm-1 for pure film to 1.41 X 10-7 Scm-1 for 5 mol% of Mn2+ ions at room temperature, which is due to the increase in mobile charge carriers and their increased mobility which is explained in terms of an increase in the amorphicity

  Key-Words / Index Term
  PVA/MAA:EA polymer blend, Mn doping, optical band gap, amorphicity and electrical conductivity

  References
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  Citation
  Ojha Pravakar , T. Siddaiah , N.O. Gopal, Ch. Ramu, "Structural, Optical and Electrical conductivity Studies of Mn2+ Ions Doped PVA/MAA:EA Polymer Blend Films," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.80-87, 2018

• Open Access   Article

  Nanostructured Fe2O3-ZnO modified GCE nanosensor for dinobuton pesticide determination in environmental samples

  P.Aruna, P. Reddy Prasad, C. Nageswara Reddy, N.Y.Sreedhar

  Research Paper | Isroset-Journal (IJSRPAS)

  Vol.6 , Issue.6 , pp.88-93, Dec-2018

  CrossRef-DOI:   https://doi.org/10.26438/ijsrpas/v6i6.8893

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  Abstract
  Nanostructured Fe2O3-ZnO modified GCE electrochemical nanosensor has been developed for the determination of dinobuton pesticide in environmental samples. The electrochemical behavior of the dinobuton pesticide was examined by cyclic and differential pulse voltammetry. The conventional electrode signal was an estimable response on the Fe2O3-ZnO/GCE, due to noble electrical conductivity and the tolerable electrostatic interface between Fe2O3 and ZnO. Under the optimum conditions, a linear association was obtained from 0.05 to 30.00 µg•mL-1 between the peak current and the concentration of dinobuton, significant detection limit of 0.01200 µg•mL-1 and to a quantification limit of 0.03636 µg•mL-1. The established procedure was magnificently applied to the determination of dinobuton pesticide in environmental (water and soil) samples.

  Key-Words / Index Term
  Dinobuton, Pesticide, Voltammetry, Environmental samples

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  Citation
  P.Aruna, P. Reddy Prasad, C. Nageswara Reddy, N.Y.Sreedhar, "Nanostructured Fe2O3-ZnO modified GCE nanosensor for dinobuton pesticide determination in environmental samples," International Journal of Scientific Research in Physics and Applied Sciences, Vol.6, Issue.6, pp.88-93, 2018