Volume 9, Issue 2, September 2014, Pages 357–362
Tesfaye Teka Hagos1
1 M.Sc, Chemistry, Adigrat University, P.O. Box 50, Adigrat, Tigray, Ethiopia
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Crystal form of N-TiO2/WO3 Nano-Composite material was prepared from urea, commercial TiO2 and WO3 by simple solid phase reaction followed by calcinations at a temperature of 400 °C for four hours at each step. The as-synthesized photocatalyst was characterized using XRD and Uv-Visible diffuse reflectance spectra. It was found that the absorption edge of N-TiO2/WO3 was well extended to visible light. Dark experiment has been done to know the degree of photodegradation of adsorption of PR over the studied photocatalyst under non-irradiation. The result obtained was for photocatalytic degradation of adsorbed PR was only about 6.32%. The as-synthesized photocatalyst was highly active under visible irradiation (93.87%) than under UV irradiations (75.74%). This may be due to the fact that the absorption edge of the modified TiO2 particle shifts to visible light range.
Author Keywords: Advanced oxidation processes, degradation, visible and UV radiations.
Tesfaye Teka Hagos1
1 M.Sc, Chemistry, Adigrat University, P.O. Box 50, Adigrat, Tigray, Ethiopia
Original language: English
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Crystal form of N-TiO2/WO3 Nano-Composite material was prepared from urea, commercial TiO2 and WO3 by simple solid phase reaction followed by calcinations at a temperature of 400 °C for four hours at each step. The as-synthesized photocatalyst was characterized using XRD and Uv-Visible diffuse reflectance spectra. It was found that the absorption edge of N-TiO2/WO3 was well extended to visible light. Dark experiment has been done to know the degree of photodegradation of adsorption of PR over the studied photocatalyst under non-irradiation. The result obtained was for photocatalytic degradation of adsorbed PR was only about 6.32%. The as-synthesized photocatalyst was highly active under visible irradiation (93.87%) than under UV irradiations (75.74%). This may be due to the fact that the absorption edge of the modified TiO2 particle shifts to visible light range.
Author Keywords: Advanced oxidation processes, degradation, visible and UV radiations.
How to Cite this Article
Tesfaye Teka Hagos, “Synthesis and Characterization of Nitrogen-Doped TiO2/WO3 Nano-Composite Material and its Photocatalytic Activity for Photo-degradation of Phenol Red in Aqueous Solution,” International Journal of Innovation and Scientific Research, vol. 9, no. 2, pp. 357–362, September 2014.
