Electrocatalytic Hydrogen Evolution by a Uranium(VI) Polyoxometalate: an Environmental Toxin for Sustainable Energy Generation.

The uranyl ion (UO), a uranium nuclear waste, is one of the serious contaminants in our ecosystem because of its radioactivity, relevant human activities, and highly mobile and complex nature of living cells. In this article, we have reported the synthesis and structural characterization of an uranyl cation-incorporated polyoxometalate (POM) compound, K[{K(HO)}{UO}(α-PWO)]·13HO (), in which the uranyl cations are complexed with an in situ generated [α-PWO] cluster. Single-crystal X-ray diffraction (SCXRD) analysis of compound reveals that the uranyl-potassium complex cationic species, [{K(HO)}{UO}], is sandwiched by two [α-PWO] clusters resulting in a Dawson type of POM.

Biosynthesis of CMC-Guar gum-Ag nanocomposites for inactivation of food pathogenic microbes and its effect on the shelf life of strawberries.

A few fruits have short post-harvest life due to high metabolic activity, relatively high water content vulnerability towards microbes and loss of weight during their storage. Carboxymethyl cellulose (CMC)-Guar gum-silver nanocomposite films (CG-AgNC) are developed to address these issues. The silver nanoparticles were generated in the CMC-Guar gum matrix through a reduction by Mentha leaves extract.

Degradation of organic pollutants by Ag, Cu and Sn doped waste non-metallic printed circuit boards.

The disposal and reuse of waste printed circuit boards have been the major global concerns. Printed circuit boards, a form of Electronic waste (hereafter e-waste), have been chemically processed, doped with Ag, Cu and Sn, and used as visible light photocatalysts against the degradation of methylene blue and methyl violet. The elemental analyses of pristine and metal doped printed circuit board were obtained using energy dispersive X-ray fluorescence (EDXRF) spectra and inductively coupled plasma optical emission spectroscopy (ICP-OES).

Synthesis, Characterization and Photocatalytic Activity of Ag - and Sn -Doped KTi Te O.

In this study, the photocatalytic dye degradation efficiency of KTi Te O synthesized through solid-state method was enhanced by cation (Ag /Sn ) doping at potassium site via ion exchange method. As prepared materials were characterized by XRD, SEM-EDS, IR, TGA and UV-Vis Diffuse reflectance spectroscopic (DRS) techniques. All the compounds were crystallized in cubic lattice with Fd3¯m space group.

Synthesis, characterization and photocatalytic activity of KAl0.33W1.67O6 and Sn0.5Al0.33W1.67O6xH2O.

Nano sized defect pyrochlore, KAl0.33W1.67O6 (KAW), is prepared through sol-gel method.

Luminescence properties of Tb3+ doped Sr2SnO4 green phosphor in UV/VUV regions.

Polycrystalline Sr2SnO4 phosphors doped with Tb(3+) were prepared by conventional solid-state reaction method. Materials were characterized by powder XRD and EDS techniques. The luminescence properties of these materials were investigated under UV and VUV excitation.

Luminescence properties of K1/2Bi1/2TiO3:Pr3+ and Na1/2Bi1/2TiO3:Pr3+.

The luminescence properties of K(1/2)Bi(1/2)TiO(3):Pr(3+) and Na(1/2)Bi(1/2)TiO(3):Pr(3+) powders are investigated in the temperature range 10-600 K. The experimental data are interpreted on the basis of metal-to-metal charge transfer processes and by considering Bi(3+)-to-Pr(3+) sensitization effects.

Evolution of phase and morphology of titanium dioxide induced from peroxo titanate complex aqueous solution.

We demonstrate the growth of anatase TiO2 in nanospheres and rutile TiO2 in nanorods, by the hydrolysis of titanium tetraisopropoxide (TTIP) in the presence of hydrogen peroxide at 100 degrees C using sol-gel method. X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), scanning electron microscopy (SEM), and surface area measurement techniques are used to characterize the phase and shape developments of TiO2 obtained from peroxo titanate complex in an aqueous solution at 100 degrees C. Peroxo titanate complexes were prepared by a reaction of titanium hydroxide, formed by hydrolysis of titanium tetraisopropoxide (TTIP), and different amounts of hydrogen peroxide (H2O2).

Colloidal TiO2 nanocrystals prepared from peroxotitanium complex solutions: phase evolution from different precursors.

We report the preparation of nanocrystalline anatase and rutile TiO(2) from aqueous peroxotitanium complex (PTC) solutions and their characterization by powder X-ray diffraction (XRD), infrared spectroscopy, and Raman spectroscopy. The phase evolution of TiO(2) prepared using PTC derived from different precursors, i.e.

Low temperature preparation and characterization of In1-xLnxBO3 (x=0.0 and 0.05; Ln=Gd, Eu, Dy and Sm): ESR of In0.95Gd0.05BO3 and emission of In0.95Eu0.05BO3.

Indium borate and rare earth substituted indium borates (In(1-x)Ln(x)BO(3) (x=0.0 and 0.05; Ln=Gd, Eu, Dy and Sm)) are prepared at low temperature by metathesis reaction using InCl(3), LnCl(3) and NaBO(2).

Preparation, characterization and ESR studies of bulk and nano sized pyrochlore La2-xGdxZr2O7 (x=0.025, 0.05, 0.075 and 0.1).

Bulk and nano sized pyrochlore of composition La(2-x)Gd(x)Zr(2)O(7) (x=0.025, 0.05, 0.

Analogue based design of MMP-13 (Collagenase-3) inhibitors.

3D-QSAR studies using MFA and RSA methods were performed on a series of 39MMP-13 inhibitors. Model developed by MFA method has a r(2)(cv) (cross-validated) of 0.616 while its r(2) (conventional) value is 0.