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41.
The nanocrystalline samples of La0.9Sr0.1MnO3 (LSMO) have been prepared by the combustion method. The thermo gravimetric analysis of precursor was carried out. The X-ray diffraction study confirms the rhombohedral crystal structure without any other impurity phases. The morphology and magnetic properties change with annealing temperature. The saturation magnetization increases linearly and coercivity of the nanoparticles varies significantly as annealing temperature increases. The maximum saturation magnetization and lower coercivity found for the sample heat treated at 1200 °C are 52.5 emu/g and 10.7 Oe respectively. 相似文献
42.
A systematic study of solvent extraction behaviour of gallium(III), indium(III) and thallium(III) with tris(2-ethylhexyl)phosphate from salicylate media has been undertaken and a scheme for their separation is proposed. The optimum extraction conditions are evaluated and described. The method is applicable to the analysis of standard aluminium and aluminium alloys samples. The results obtained are reproducible and accurate. 相似文献
43.
R. Acharya A. D. Shinde S. Jeyakumar M. K. Das A. V. R. Reddy 《Journal of Radioanalytical and Nuclear Chemistry》2013,298(1):449-453
An epithermal instrumental neutron activation analysis (EINAA) method using cadmium filter was standardized to determine trace concentrations of thorium in four samples of uranium oxide (U3O8) samples. Samples and thorium standards, wrapped with cadmium foil, were irradiated at a reactor neutron flux of about 1012 cm?2 s?1. Radioactive assay was carried out using a Compton suppressed anticoincidence gamma ray spectrometer consisting of HPGe-BGO detectors coupled to MCA. Concentrations of thorium in these samples were found to be in the range of 15–72 mg kg?1. EINAA results were validated by determining thorium concentrations in uranium matrix by standard addition method. EINAA results were compared with those obtained by two wet chemical methods namely ion chromatography (IC) and inductively coupled plasma atomic emission spectrometry (ICP-AES). The results obtained by the three methods were found to be in good agreement, indicating further validity of the proposed EINAA method. 相似文献
44.
Interfacial Engineering of CdO–CdSe 3D Microarchitectures with in situ Photopolymerized PEDOT for an Enhanced Photovoltaic Performance 下载免费PDF全文
Iseul Lim Dipak V. Shinde Supriya A. Patil Do Young Ahn Wonjoo Lee Nabeen K. Shrestha Joong Kee Lee Sung‐Hwan Han 《Photochemistry and photobiology》2015,91(4):780-785
In the present work, porous 3D CdO‐microstructured electrode obtained by pyrolysis of 3D CdCO3 microstructures is self‐sensitized with CdSe using an ion exchange reaction. After sensitization, an interfacial treatment of the CdO–CdSe interface is performed by depositing a thin film of PEDOT using a photoinduce polymerization route. The microstructured electrode before and after interfacial treatment is characterized using field‐emission scanning microscope, energy dispersive X‐ray analyzer, contact angle measurement, UV–Visible absorption spectrophotometer and X‐ray photoelectron spectrometer. After constructing a liquid junction solar cell with a Pt counter electrode, the photovoltaic performance and interfacial charge transfer kinetics across the CdO–CdSe interface before and after PEDOT treatment are investigated. The results exhibit an improved interfacial charge‐transfer resistance after the PEDOT treatment, which leads to enhance the short‐circuit current by 15.81% and the power conversion efficiency by 19.82%. 相似文献
45.
A new and simple method has been developed for the rapid extraction of tungsten(VI) with mesityl oxide. Quantitative extraction occurs from solutions 1M in hydrochloric acid and 12M in lithium chloride (as the salting-out agent) with 75% mesityl oxide in isobutyl methyl ketone. Tungsten is finally determined photometrically as the thiocyanate complex in the aqueous phase. Tungsten-(VI) can be extracted and determined satisfactorily in the presence of several elements. The method is shown to be applicable to an alloy steel. 相似文献
46.
Kulkarni Krishna V. Shinde Davanand B. Mane Dhananjay V. Toche Raghunath B. Garad Manchak V. 《平面色谱法杂志一现代薄层色谱法》2010,23(5):373-375
JPC – Journal of Planar Chromatography – Modern TLC - A new chromogenic spray reagent has been used for detection and identification of carbosulfan in HPTLC. Alkaline hydrolysis of... 相似文献
47.
4(3H)‐Quinazolinones were synthesized in high yields by one‐pot three‐component condensation of anthranilic acid, carboxylic acid and aniline in the presence of ionic liquid such as 1‐n‐butyl‐3‐methylimidazolium tetrafluoroborate (BMImBF4) as catalyst under solvent free and neutral conditions. 相似文献
48.
P. M. Kadam N. L. Tarwal P. S. Shinde R. S. Patil H. P. Deshmukh P. S. Patil 《Applied Physics A: Materials Science & Processing》2009,97(2):323-330
Suitable host lattice and morphology for easy intercalation and deintercalation process are crucial requirements for electrochromic
device. In this investigation, the evolution of structural and morphological changes and their effect on electrochromic (EC)
properties of spray-deposited WO3 thin films are studied. Films of different morphologies were deposited from an ammonium tungstate precursor solution using
a novel pulsed spray pyrolysis technique (PSPT) on tin-doped indium oxide (ITO) coated glass substrates by varying quantity
of spraying solution. Interesting morphological transition from beads-to-wires-to-fibers as a function of quantity of sprayed
solution has been demonstrated. The porosity, crystallinity and “open” structures in the films consisting of beads, wires,
and fiber-like morphology enabled us to correlate these aspects to their EC performance. WO3 films comprising wire-like morphology (20 cc spraying quantity) exhibited better EC properties both in terms of coloration
efficiency (42.7 cm2/C) and electrochemical stability (103 colored/bleached cycles) owing to their adequate open structure, porosity, and amorphicity, compared with the films having
bead/fiber-like morphology. 相似文献
49.
Lokhande A. C. Shinde N. M. Shelke A. Babar P. T. Kim Jin Hyeok 《Journal of Solid State Electrochemistry》2017,21(9):2747-2751
Journal of Solid State Electrochemistry - Green synthesis of optically active silver nanoparticles (Ag) containing thin film on flexible plastic strip substrate has been carried using guava leaf... 相似文献
50.
Ashok B. Gadkari Tukaram J. Shinde 《Journal of magnetism and magnetic materials》2010,322(24):3823-972
Nanocrystalline ferrite powder having the general formula Mg1−xCdxFe2O4+5% Sm3+ (x=0, 0.2, 0.4, 0.6, 0.8 and 1.0) was synthesized by chemical oxalate co-precipitation technique. The synthesized powder was characterized by X-ray, IR and SEM techniques. The XRD analysis confirms cubic spinel phase with orthoferrite secondary phase. The lattice constant increases with increase in Cd2+ content (x). It is smaller than that for pure Mg-Cd ferrites. The average crystallite size lies in the range 28.69-32.66 nm. Saturation magnetization and magnetic moment increase with cadmium content up to x=0.4 and decrease thereafter. This is attributed to the existence of localized canted spin. The decrease in saturation magnetization and magnetic moment beyond x=0.4 is due to the presence of triangular spin arrangement on B-site. Coercivity and remanent magnetization decrease while Y-K angles increase with Cd2+ content. The Sm3+ addition improves the magnetic properties. 相似文献