| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1530410 | Materials Science and Engineering: B | 2010 | 5 Pages |
Abstract
Titanium dioxide (TiO2) powders were prepared by simple hydrolysis of titanium tetrachloride (TiCl4) followed by subsequent drying at 100 °C. The as prepared powders were calcined at different temperatures ranging from 400 to 900 °C. The as synthesized as well as calcined TiO2 powders were characterized using X-ray diffractometry, scanning electron microscopy and BET surface area measurements. X-ray diffractometry revealed anatase to rutile phase transformation above 800 °C for the TiO2 powders. Photocatalytic activity of these samples was evaluated by studying the degradation of 10 ppm aqueous methylene blue dye under 400 W high pressure mercury vapor lamp with 50 mg of TiO2 powders. Highest photocatalytic activity was observed for TiO2 powder calcined at 750 °C due to presence of anatase and rutile phases in 80:20 ratio. The activity of powder calcined at 750 °C was comparable with commercial Degussa P-25 TiO2 powders owing to similar phase composition.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Sudhir S. Arbuj, Ranjit R. Hawaldar, Uttamrao P. Mulik, Bina N. Wani, Dinesh P. Amalnerkar, Suresh B. Waghmode,