In this work, ZnTiO3 ceramics have been synthesized from the reaction of zinc acetate (Zn(CH3COO)2.2H2O), tetrabutyl titanate (Ti(OC4H9)4) as precursors and ethanol as the solvent, in the presence benzene-1, 3, 5-tricarboxylic acid as a novel chelating agent by sol-gel method. The effect of various parameters such as reaction temperature, pH effect, effect of molar ratio of benzene -1, 3, 5tricarboxylic acid to tetrabutyl titanate on morphology, size and purity of products was investigated. The asprepared products were characterized by various analyses such as: X-ray diffraction (XRD), scanning and transmittance electron microscopy (SEM, TEM), X-ray energy dispersive spectroscopy (EDS), UV-Vis and Fourier transform infrared spectroscopy (FT-IR) technique. The photocatalytic degradation was investigated 2 using methyl orange (MO) under ultraviolet (UV) light irradiation. Application of this product as photocatalyst was investigated through degradation of methyl orange (MO) under UV irradiation and percentage of degradation obtained about 70 % after 60 min.

No abstract

No abstract

No abstract

Zinc tungstate nanoparticles have been successfully synthesized by a precipitation method in the presence of different polymeric surfactants. This study aimed to investigate the effect of different solvents and polymeric surfactants such as carboxymethyl cellulose, polyethylene glycol, and polyvinyl alcohol on the morphology, particle size, and crystal structure of the final product. The as-synthesized products were characterized by powder x-ray diffraction analysis, scanning electron microscopy, ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, transmission electron microscopy, and energy-dispersive x-ray spectroscopy techniques. Furthermore, the hysteresis loop of the zinc tungstate nanoparticles at room temperature revealed paramagnetic behavior. Photocatalysis results revealed that maximum methyl orange decolorization of 85% was achieved with ZnWO 4 nanoparticles in 240 min under visible-light irradiation. The saturation magnetization, remanent magnetization, and coercivity of the ZnWO 4 nanoparticles were 0.003 emu/g, 0.0005 emu/g, and 110 Oe, respectively.

Zinc molybdate rod-like nanostructures have been successfully synthesized by precipitation method process in the presence of different surfactants. This study aimed to investigate the effects of different surfactant such as sodium dodecyl sulfate, polyethylene glycol, and cetyltrimethylammonium bromide and solvent on the morphology and particle size of final products. It was found that the size and morphology of the products could be greatly influenced by the aforementioned parameters. To the best of authors' knowledge, this is the first report on the synthesis of ZnMoO 4 nanostructure with different morphologies in the presence of ethanol as a solvent. The assynthesized products were characterized by XRD, SEM, UV-Vis, and EDS techniques. To evaluate the photocatalyst properties of nanocrystalline zinc molybdate, the photocatalytic degradation of methyl orange under visible light irradiation was carried out.

No abstract

No abstract