No abstract

Ag doped TiO2 nanoparticles with different metallic content (0.0, 0.1, 0.15 and 0.2 wt.%) were prepared by using EDTA-Glycol method. For the sake of comparison blank TiO2 sample is also prepared using same method. All the samples have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). X-ray diffraction technique revealed that Ag-doped TiO2 has anatase structure and as the concentration of Ag increases the particle size will get decreases. The morphologies of TiO2 samples are influenced by doping Ag as shown by SEM images. The present work is mainly focused on the enhancement of photocatalytic reactivity of as synthesized samples by the photodegradation of 4BS under visible light irradiation using a LED lamp of (15 W) as a light source. A 96.3% of photodegradation of 4BS dye was achieved by utilizing 1 g/L of Ag-doped TiO2 at pH 6 for 100 min.

The present work is aimed at the synthesis of Fe(II) doped CdS nanoparticles and investigating the photocatalytic decolorization efficiency of synthesized nanoparticles against Acid Blue (AB-29) dye solution under varying controlling parameters such as catalyst dose, initial concentration of dye and pH. The samples were prepared by colloidal chemical precipitation method and characterized by X-ray diffraction and HRTEM techniques. The results were evaluated by using visible absorption spectroscopy. The obtained results witnessed the high photocatalytic decolorization efficiency of Fe(II) doped CdS nanoparticles at the pH 8.