Synthesis of ZnO/Bi2O3 and SnO2/Bi2O3/Bi2O4 mixed oxides and their photocatalytic activity
Journal Title: Iranian Chemical Communication - Year 2015, Vol 3, Issue 4
Abstract
In the present work, ZnO/Bi2O3, SnO2/Bi2O3/Bi2O4 mixed oxide, Bi2O3 rod-like and SnO2 nanoparticle have been synthesized. The obtained samples were characterized by field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD). The optical properties of samples were evaluated by UV-Vis spectrophotometer. The photocatalytic activity of samples was evaluated by decolorization of methylene blue (M.B.) solution. The Present work indicates the improving or hampering effect of Bi2O3 on the photocatalytic activity of ZnO/Bi2O3. The results show that the photocatalytic performance of ZnO/Bi2O3 which is higher than that of Bi2O3, SnO2, and SnO2/Bi2O3/Bi2O4 is related to the presence of the zinc oxide semiconductor. Furthermore, results indicated that the photoactivity of the SnO2/Bi2O3 system was not improved. The present work affirms the importanat position of energy levels and also the separation of photogenerated electron/hole pairs on the efficient photocatalytic performance.
Authors and Affiliations
Maryam Movahedi, Akram Hosseinian, Nasrin Nazempour, Mohadeseh Rahimi, Hossein Salavati
Keywords
Related Articles
- EP ID EP259251
- DOI -
- Views 124
- Downloads 0
Isolation and characterization of curcumin from powdered rhizomes of turmeric plant marketed in Maragheh city of Iran with soxhlet technique
Turmeric (Curcuma longa L.) is extensively used as a spice, food preservative and colouring material. It has been used in traditional medicine for various diseases. Curcumin, the main yellow bioactive component of turmer...
Application of carbon ceramic modified electrode with prussian blue for electrocatalytic oxidation of nitrite ion
A novel chemically modified electrode containing Prussian blue complex was achieved on the surface of glass carbon electrode by sol-gel technique. The electrochemical behavior of modified electrode was characterized by c...
Fe2V4O13 assisted hetero-Fenton mineralization of methyl orange under UV-A light irradiation
Fe2V4O13 is prepared and characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), UV-diffuse reflectance spectroscopy (UV-DRS), high resolution scanning electron microscopy (HR-SEM) using energy disp...
Liquid phase bromination of phenols over silicotungstic acid immobilized on nickel oxide nanoparticles
Heteropoly acid promoted nanoparticle of nickel oxide samples were prepared by sol-gel method using heteropoly acids. Prepared composite was characterized by XRD, FT-IR and ICP technique. In this work, we have reported b...
The effect of time and temperature on the growth and morphology of cupper oxide nanostructures
Cupper Oxide structures with a variety of novel morphologies are synthesized using cupper foil as substrate via a solution route. The structure, morphology and phase of the as-synthesized nanostructures are analyzed by v...