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Kolekar T.V.,Visvesvaraya Technological University | Kolekar T.V.,Rajarambapu Institute of Technology | Thorat N.D.,The Interdisciplinary Center | Yadav H.M.,University of Seoul | And 5 more authors.
Ceramics International | Year: 2016

Biocompatible materials based on hydroxyapatite are potentially attractive for a wide range of medical applications. The effect of aluminium substitution on the biocompatibility of hydroxyapatite (HA) under the physiochemical conditions has been investigated. Various samples of aluminium doped hydroxyapatite (Al-HA) with different concentration (0, 0.5, 1.0, 1.5, 2.0, 2.5 mol%) were successfully synthesised by solution combustion method and characterized by X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and Scanning Electron Microscopy (SEM), and thermal analysis technique. XRD and TEM results reveal uniform and crystalline nature of Al-HA nanoparticles. The biocompatibility of the Al-HA nanoparticles was studied using L929 cell lines by MTT assays up to 24 h. These Al-HA nanoparticles are biocompatible on cell lines L929 and do not have toxic effects for further possible in vivo applications. The results of these studies confirmed the biocompatibility of Al-HA and demonstrated the suitability for biomedical applications. The present work reveals the importance of structural, morphological, biocompatible properties of Al-HA nanoparticles and predicts the suitability for biomedical applications. © 2015 Elsevier Ltd and Techna Group S.r.l.

Patil V.S.,Lal Bahadur Shastri College | Patil S.V.,Yashwantrao Chavan Institute of Science | Deshmukh H.V.,Yashwantrao Chavan Institute of Science | Pathade G.R.,Fergusson College
Nature Environment and Pollution Technology | Year: 2013

Soil salinity is a major problem in Maharashtra. Attempt is made to isolate salt-tolerant, thermotolerant, nitrogen fixing, phosphate solubilising Azotobacter spp. from the saline soil of Khodashi village in Satara district. Eight Azotobacter spp. were isolated from the saline soils. They were confirmed based on morphological, cultural and biochemical characteristics. They were tested for saline and thermal tolerance. The phosphate solubilizing potential of the these Azotobacter isolates was qualitatively evaluated by the formation of halos (clear zones) around the colonies growing on solid medium containing tribasic calcium phosphate as a sole phosphorus source. The results showed that phosphate solubilising, salt tolerant and thermotolerant Azotobacter spp. could be a promising source for the development of saline-Alkali soil-based agriculture.

Jadhav P.,Shivaji University | Patankar K.,Rajaram College | Mathe V.,University of Pune | Tarwal N.L.,Lal Bahadur Shastri College | And 3 more authors.
Journal of Magnetism and Magnetic Materials | Year: 2015

Ni0.8Co0.2-2xCuxMnxFe2O4 ferrites (with x=0.01, 0.03, 0.05, 0.07 and 0.09) were prepared using solution combustion route. X-ray diffraction analysis indicates the presence of the characteristic most intense (311) peak along with other reflections confirming the formation of spinel ferrite in each composition. SEM images show formation of porous structured agglomerates with submicron sized grains. The microstrain measurement of ferrite series is non-linear with variation in dopant concentration for a given magnetic field. The magnetic hysteresis at room temperature indicates the ferrimagnetic behavior of synthesized ferrite system. The magnetic and mechanical properties were seen to be comparatively higher for x=0.07 composition. The presence of sexset in Mössbauer spectra confirms the ferrimagnetic nature of all the ferrites. © 2015 Elsevier B.V. All rights reserved.

Kamble S.S.,University of Solapur | Kamble S.S.,k-Technology | Sikora A.,Electrotechnical Institute Warsaw | Deshmukh S.L.,University of Solapur | And 5 more authors.
Materials Letters | Year: 2016

The synthesis of multicomponent semiconducting thin films has become the subject of intensive research. The development of deposition-characterization techniques and property correlation and understanding of these materials are critical for the successful implementation of a whole new generation of advanced micro-devices. A wide range of discussion made in this article include facile chemical synthesis of Zn, Cd(CoS) thin films and characterization pertaining to the studies on compositional, morphological, optical and electrical transport aspects. The overall discussion involved herein will be useful to establish further engrossment of the researchers in the mentioned quaternary system. © 2016 Elsevier B.V. All rights reserved.

Harale N.S.,Shivaji University | Kamble A.S.,Chonnam National University | Kamble A.S.,Bw Commerce And Science College | Tarwal N.L.,Lal Bahadur Shastri College | And 4 more authors.
Ceramics International | Year: 2016

Vertically aligned ZnO nanorods (ZNRs) arrays with various aspect ratios were deposited by using a simple and inexpensive hydrothermal route at relatively low temperature of 90°C. The influence of hydroxide anion generating agents in the solution on the growth of ZNRs arrays was studied. Hexamethylenetetramine (HMTA) and ammonia were used as hydroxide anion generating agents while polyethyleneimine (PEI) as structure directing agent. The combined effect of these three agents plays a crucial role in the growth of ZNRs arrays with respect to their rod length and diameter, which controls the aspect ratio. The deposited ZNRs exhibited hexagonal wurtize crystal structure with preferred orientation along (002) plane. The highly crystalline nature and pure phase formation of ZNRs was confirmed from FT-Raman studies. The maximum gas response (Rg/Ra) of 67.5 was observed for high aspect ratio ZNRs, deposited with combination of HMTA, ammonia as well as PEI. The enhancement in gas response can be attributed to high surface area (45 cm2/g) and desirable surface accessibility in high aspect ratio ZNRs. Fast response-recovery characteristics, especially a much quicker gas response time of 32s and recovery time of 530s were observed at 100ppm NO2 gas concentration. © 2016.

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