Jalgaon, India

North Maharashtra University was established on August 15, 1990 after separating it from the parent University of Pune.The university campus is located at Jalgaon in Maharashtra, India. It occupies an area of 404 acres on the banks of Girna river. Massive plantation has been undertaken to enrich the natural beauty of the campus. In 2001, NAAC Accredited the prestigious 4 Star Status to the University. The university was reaccredited by NAAC as 'B' grade university.Separate hostel facilities for male and female students are available on the campus on the basis of merit and certain other restrictions. Staff quarters are located within the campus.The university library has six floors and more than 50,000 books. There are more than 500 magazines subscribed in the Library reading section.Research students of the North Maharashtra University establish the North Maharashtra University Research Scholar Association on the 14 September 2009 by the hand of Honorable Prin. Dr. K. B. Patil .Currently there are 62 members comprising the university's teaching faculty. Wikipedia.


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Chaudhari S.,North Maharashtra University | Patil P.P.,North Maharashtra University
Electrochimica Acta | Year: 2011

Polyaniline (PANI) coatings were electrochemically synthesized on nickel (Ni) coated mild steel (MS) and their corrosion protection properties were investigated. In this work, the Ni layer (∼1 μm thick) was electrodeposited on MS under galvanostatic condition. Thereafter, the PANI coating was deposited over the Ni layer from aqueous salicylate medium by using cyclic voltammetry. These bi-layered composite coatings were characterized by cyclic voltammetry, UV-vis absorption spectroscopy and Fourier transform infrared (FTIR) spectroscopy. The corrosion protection properties of Ni coated MS (Ni/MS) and PANI coated Ni/MS (PANI/Ni/MS) were investigated in aqueous 3% NaCl by using open circuit potential (OCP) measurements, potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). It was shown that the top layer of PANI exhibits a lower porosity behavior with respect to Ni coating and reduces the corrosion rate of Ni/MS almost by a factor of 3500 and increases the lifetime of Ni coating. © 2011 Elsevier Ltd. All rights reserved.


Khairnar A.G.,North Maharashtra University | Mahajan A.M.,North Maharashtra University
Solid State Sciences | Year: 2013

Structural and electrical properties of HfO2 gate-dielectric metal-oxide-semiconductor (MOS) capacitors deposited by sputtering are investigated. The HfO2 high-k thin films have been deposited on p-type <100> silicon wafer using RF-Magnetron sputtering technique. The Ellipsometric, FTIR and AFM characterizations have been done. The thickness of the as deposited film is measured to be 35.38 nm. Post deposition annealing in N2 ambient is carried out at 350, 550, 750 °C. The chemical bonding and surface morphology of the film is verified using FTIR and AFM respectively. The structural characterization confirmed that the thin film was free of physical defects and root mean square surface roughness decreased as the annealing temperature increased. The smooth surface HfO2 thin films were used for Al/HfO2/p-Si MOS structures fabrication. The fabricated Al/HfO2/p-Si structure had been used for extracting electrical properties such as dielectric constant, EOT, interface trap density and leakage current density through capacitance voltage and current voltage measurements. The interface state density extracted from the G-V measurement using Hill Coleman method. Sample annealed at 750 °C showed the lowest interface trap density (3.48 × 1011 eV-1 cm-2), effective oxide charge (1.33 × 1012 cm-2) and low leakage current density (3.39 × 10-9 A cm-2) at 1.5 V. © 2012 Elsevier Masson SAS. All rights reserved.


Shinde V.P.,North Maharashtra University | Patil P.P.,North Maharashtra University
Journal of Solid State Electrochemistry | Year: 2013

Poly(o-toluidine) (POT) coatings were electrochemically synthesized on 304 stainless steel using cyclic voltammetric method. These coatings were characterized by Fourier transform infrared spectroscopy, UV-vis absorption spectroscopy, and cyclic voltammetry. The corrosion performance of POT coating in aqueous 3 wt% sodium chloride was assessed by the electrochemical techniques such as open circuit potential measurements, potentiodynamic polarization technique, cyclic potentiodynamic polarization measurements, and electrochemical impedance spectroscopy. The results reveal that POT coating on 304 stainless steel prevents general and localized corrosion, and reduces the exchange current density almost by a factor of 45 than bare 304 stainless steel. © 2012 Springer-Verlag.


Chatterjee A.,North Maharashtra University | Mishra S.,North Maharashtra University
Particuology | Year: 2013

The synthesis of hard-core/soft-shell calcium carbonate (CaCO 3)/poly(methyl methacrylate) (PMMA) hybrid structured nanoparticles (<100 nm) by an atomized microemulsion polymerization process is reported. The polymer chains were anchored onto the surface of nano-CaCO3 through use of a coupling agent, triethoxyvinyl silane (TEVS). Ammonium persulfate (APS), sodium dodecyl sulfate (SDS) and n-pentanol were used as the initiator, surfactant and cosurfactant, respectively. The polymerization mechanism of the core-shell latex particles is discussed. The encapsulation of nano-CaCO3 by PMMA was confirmed using a transmission electron microscope (TEM). The grafting percentage of the core-shell particles was investigated by thermogravimetric analysis (TGA). The nano-CaCO3/PMMA core-shell particles were characterized by Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). The FTIR results revealed the existence of a strong interaction at the interface of the nano-CaCO3 particle and the PMMA, which implies that the polymer chains were successfully grafted onto the surface of the nano-CaCO3 particles through the link of the coupling agent. In addition, the TGA and DSC results indicated an enhancement of the thermal stability of the core-shell materials compared with that of the pure nano-PMMA. The nano-CaCO 3/PMMA particles were blended into a polypropylene (PP) matrix by melt processing. It can also be observed using scanning electron microscopy (SEM) that the PMMA chains grafted onto the CaCO3 nanoparticles interfere with the aggregation of CaCO3 in the polymer matrix (PP matrix) and thus improve the compatibility of the CaCO3 nanoparticles with the PP matrix. © 2013 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences.


Shinde V.P.,North Maharashtra University | Patil P.P.,North Maharashtra University
Electrochimica Acta | Year: 2012

Electrochemical polymerization of the aniline, o-anisidine and o-toluidine coatings on low carbon steel has been carried out under galvanostatic conditions in an aqueous oxalic acid solution. The E-t curves show three distinct stages - dissolution of the low carbon steel surface and formation of polycrystalline iron oxalate interphase, complete passivation of low carbon steel surface and the electrochemical polymerization of respective monomer(s). To understand the role of monomer(s) during the electrochemical polymerization process, the passive interphase samples were characterized by X-ray photoelectron spectroscopy. The results of this study show that monomer(s) are taking a part in first stage of electrochemical polymerization and passivation time depends on the type of monomer(s) present in electrolyte. © 2012 Elsevier Ltd.


Mohite B.V.,North Maharashtra University | Patil S.V.,North Maharashtra University
Carbohydrate Polymers | Year: 2014

The present study aims to investigate the physico mechanical, structural and thermal properties of the bacterial cellulose (BC) produced under shaking condition. Formation of characteristic cellulose sphere has been characterized by light and scanning electron microscopy. The purity of bacterial cellulose was confirmed by thin layer chromatography of hydrolyzed product and elemental analysis by Energy Dispersive Spectroscopy and Fourier transform infrared spectroscopy. High crystallinity bacterial cellulose (81%) composed by high Iα confirmed by X-ray diffraction and solid state C13 nuclear magnetic resonance spectroscopy. The Z-average particle size was 1.44 μm with high porosity of 181.81%. The water holding and absorption capacity was determined. Tensile strength reveals a Young's modulus of 15.71 ± 0.15 MPa and tensile strength of up to 14.94 MPa. The thermal behavior evaluated by thermogravimetry and differential scanning calorimetry shows the thermal stability of bacterial cellulose. The results demonstrated unique characteristics of bacterial cellulose produced at shaking condition. © 2014 Elsevier Ltd.


Fegade U.,North Maharashtra University | Attarde S.,North Maharashtra University | Kuwar A.,North Maharashtra University
Chemical Physics Letters | Year: 2013

We synthesized a fluorescence receptor 2,2-(pyridine-2,6-diylbis(azanediyl) )bis(methylene)diphenol (2) and report it as a photoinduced electron transfer (PET) cation sensor that is capable of indicating the presence of Fe 3+ ion via a fluorescence signal. It was observed that fluorescence intensity changes and quenched. The association constant (Ka) of receptor (2) with Fe3+ ions was calculated from Benesi-Hildebrand and Scatchard Plot at 1.60 and 1.30 × 104 M-1 respectively. © 2013 Elsevier Ltd. All rights reserved.


Patil D.,North Maharashtra University | Patil V.,CSIR - National Chemical Laboratory | Patil P.,North Maharashtra University
Sensors and Actuators, B: Chemical | Year: 2011

The α-Fe2O3 nanorods were successfully synthesized without any templates by calcining the α-FeOOH precursor in air at 300 °C for 2 h and their LPG sensing characteristics were investigated. The α-FeOOH precursor was prepared through a simple and low cost wet chemical route at low temperature (40 °C) using FeSO 4·7H2O and CH3COONa as starting materials. The formation of α-FeOOH precursor and its topotactic transformation to α-Fe2O3 upon calcination was confirmed by X-ray diffraction measurement (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analysis. The α-Fe 2O3 nanorods exhibited outstanding gas sensing characteristics such as, higher gas response (∼1746-50 ppm LPG at 300 °C), extremely rapid response (∼3-4 s), relatively slow recovery (∼8-9 min), excellent repeatability, good selectivity and lower operating temperature (∼300 °C). Furthermore, the α-Fe2O 3 nanorods are able to detect up to 5 ppm for LPG with reasonable response (∼15) at the operating temperature of 300 °C and they can be reliably used to monitor the concentration of LPG over the range (5-60 ppm). The experimental results clearly demonstrate the potential of using the α-Fe2O3 nanorods as sensing material in the fabrication of LPG sensors. Plausible LP G sensing mechanism of the α-Fe2O3 nanorods is also discussed. © 2010 Elsevier B.V. All rights reserved.


Bhalerao T.S.,North Maharashtra University
Turkish Journal of Biology | Year: 2012

The persistence of endosulfan and intermediate metabolite endosulfan sulfate in the environment and their toxic effects on biota necessitate their removal. This study investigated the bioaugmentation of endosulfan-contaminated soil by fungal inoculant Aspergillus niger ARIFCC 1053. The influence of bioaugmentation by A. niger on endosulfan-contaminated soil was evaluated with the help of change in pH and released chloride, and by thin layer chromatography and gas chromatography analysis. Its effects on soil functionality were monitored by estimating dehydrogenase and arylsulfatase enzyme activities. The endosulfan degradation reached an undetectable level on day 15. The pH of the medium was nearly neutral (6.9) at the time of inoculation and it decreased to 3.6 on day 15. The amount of chloride released at particular intervals in the endosulfan degradation ranged from 28 mg mL-1 to 104 mg mL-1. Change in pH and the increase in released chloride correlated with metabolic activities involved in the simultaneous degradation of endosulfan. Endosulfan sulfate, an intermediate metabolite, was detected and had disappeared on day 11 of the process. The increase in enzyme activities is an indicator of soil fertility and suggests possible involvement of these enzymes in endosulfan degradation. These results demonstrate that bioaugmentation by A. niger may be a viable tool for the remediation of soil contaminated with endosulfan. © TÜBITAK.


Thakur S.,North Maharashtra University | Patil P.,North Maharashtra University
Sensors and Actuators, B: Chemical | Year: 2014

This paper reports a simple and rapid microwave-assisted method for synthesizing cerium oxide (CeO2) nanoparticles for the fabrication of high-performance humidity sensors. The humidity-sensing investigation reveals that the sensor based on CeO2 nanoparticles exhibits a high and linear response within the entire relative humidity (RH) range of 11-97% at an operating frequency of 60 Hz. The corresponding impedance changes by approximately three orders of magnitude within the entire humidity range from 11% to 97%. The response and recovery times are approximately 3 and 16 s, respectively. Additionally, the sensor exhibits a rapid and reversible response characterized by a very small hysteresis (∼1%RH), excellent repeatability, long term stability and a broad range of operation (11-97%RH). The Nyquist impedance plots of the sensor at different RHs were used to elucidate the sensor's humidity-sensing mechanism via an electrical equivalent circuit. The experimental results provide a possible method for the rapid synthesis and fabrication of high-performance humidity sensors based on CeO2 nanoparticles. © 2013 Elsevier B.V.

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