http://nopr.niscpr.res.in/handle/123456789/35025 Mon, 12 Oct 2026 09:06:43 GMT 2026-10-12T09:06:43Z http://nopr.niscpr.res.in/handle/123456789/35071 Title: Investigations on interaction between atazanvir sulphate and bovine serum albumin by fluorescence spectroscopy Authors: Mote, Umesh S; Kolekar, G B Abstract: The interaction between bovine serum albumin (BSA) and atazanvir sulphate (AS) has been investigated under the physiological pH 7.4 condition using fluoresence spectroscopy. The binding constant, number of binding site, thermodynamic parameters such as ∆G, ∆H, ∆S and nature of binding forces between BSA-AS have been obtained from the steady state fluorescence quenching of BSA by AS. The static quenching is confirmed from Stern-Volmer quenching constant at different temperatures. The effect of AS on the conformation of BSA has been analyzed using synchronous and three-dimensional fluorescence spectroscopy. Page(s): 820-823 Fri, 01 Jul 2016 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/35071 2016-07-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/35070 Title: Synthesis and characterization of [Ni-Al-Fe] nanocomposite and its application for the removal of cadmium(II) and zinc(II) ions Authors: Krishna, Y V S Sai; Babu, R Ravichandra; Satyam, P V Abstract: The applicability of [Ni-Al-Fe] trioxide nano composite for the selective removal of toxic metals from wastewater has been investigated. The [Ni-Al-Fe] nanocomposite of 10 nm size has been synthesized via solution combustion route using aqueous solutions containing aluminum nitrate, iron nitrate and nickel nitrate as oxidizers and glycine as fuel. The calcined composite oxide has been characterized by powder x-ray diffraction, scanning electron microscope and transmission electron microscope. The surface area of the nanocomposite is determined to be 91 m2/g using Brunauer-Emmett-Teller method. Batch experiments carried out to determine the adsorption kinetics and the efficiency of removal of trace metals such as zinc and cadmium under different experimental conditions show the process to be highly pH dependant, which makes the nanocomposite selectively adsorb these two metals. The adsorption of the two metals reached equilibrium within 35 min; the adsorption data well fitted with Langmuir and Freundlich isotherms. Page(s): 816-819 Fri, 01 Jul 2016 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/35070 2016-07-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/35069 Title: A new hybrid iron fluoride bipyridine with mixed valence: Fe2F5(2,2'-bipyridine)2H2O Authors: Smida, Mouna; Dammak, Mohamed; Garcia-Granda, Santiago Abstract: Hydrothermal synthesis of iron fluoride compound, Fe2F5(2,2'-bipyridine)2H2O, and its characterization by single crystal X-ray diffraction is reported. The compound is found to crystallize in the triclinic space group . The monohydrate fluoroferrate of bipyridine is built up from Fe4F10N8 tetrahedron connected by eight nitrogen atoms of four 2,2'-bipyridine molecules and separated by H2O molecules. The main feature of this atomic arrangement is the coexistence of two oxidation states of iron cations and hybrid class II with 0-D dimensionality. Thermal and IR spectral analysis have been carried out for the title compound to confirm the hematite compound as residual and the presence of organic molecule , respectively. Magnetic characterization does not reveal any ferromagnetic component in the range of magnetic field from -20 kOe to 20 kOe at room temperature. Page(s): 810-815 Fri, 01 Jul 2016 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/35069 2016-07-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/35068 Title: Solar light induced photodegradation of oxytetracyline using Zr doped TiO2/CaO based nanocomposite Authors: Raizada, Pankaj; Priya, Bhanu; Thakur, Pankaj; Singh, Pardeep Abstract: Zr doped TiO2/CaO (Zr-TiO2/CaO) has been synthesized by sol-gel method and its photocatalytic activity tested for the removal of oxytetracycline (OTC) from aqueous solution. Zr-TiO2/CaO has been characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy diffraction X-ray, Fourier transform infrared spectroscopy and UV-visible spectral analysis. SEM results confirm the dispersion of Zr doped TiO2 on calcium oxide support. The Zr-TiO2/CaO nanocomposite exhibits semicrystalline structure with average size of 50 nm. The photocatalytic activity of Zr-TiO2/CaO has been evaluated for the photodegradation of OTC under solar light. The synergetic adsorption and photocatalysis (A+P) is most efficient for oxytetracycline removal. The effect of various reaction parameters such as OTC concentration, pH of reaction solution and catalyst loading has been evaluated for OTC degradation. The photocatalytic degradation of oxytetracycline obeys pseudo-first order kinetics. The nanocomposite exhibits significant recyclability due to easy separation and stability in the reaction solution. The oxidative removal occurrs through hydroxyl radical formation. The nanocomposite displays excellent photocatalytic property for degradation of oxytetracycline and may have potential applications in water treatment. Page(s): 803-809 Fri, 01 Jul 2016 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/35068 2016-07-01T00:00:00Z