Photocatalytic Cement by TiO2 Addition
| Periodical | Materials Science Forum (Volume 712) |
|---|---|
| Main Theme | Photocatalytic Materials & Surfaces for Environmental Cleanup |
| Edited by | Rajesh J. Tayade |
| Pages | 65-72 |
| DOI | 10.4028/www.scientific.net/MSF.712.65 |
| Citation | Pradeepan Periyat et al., 2012, Materials Science Forum, 712, 65 |
| Online since | February, 2012 |
| Authors | Pradeepan Periyat, A.S. Divya, K.G.K. Warrier |
| Keywords | Anatase, Cement, Photocatalyst, Sol-Gel (SG), TiO2 |
| Price | US$ 28,- |
Photocatalytically active TiO2 and silica doped TiO2 (Si-TiO2) synthesised using an aqueous sol-gel method and is characterised by particle size analysis, XRD, diffuse reflectance spectra and BET measurements. The photocatalytic analysis using methylene blue proved that the Si-TiO2 possesses higher activity than pure TiO2. This Si-TiO2 having higher photo-catalytic activity was incorporated into white portland cement and this modified cement exhibited photo-catalytic activity as evaluated by using methylene blue degradation experiments. This novel work is considered to be useful for further development of self-cleaning cements. Moreover silica doped to TiO2 improved surface area and thermal stability of anatase TiO2 significantly. At 800 ะพC, 100 percentage anatase phase was obtained for Si-TiO2 whereas pure TiO2 showed 100 percentage rutile phase at the same temperature and surface aera of the Si-TiO2 was 93 m2/g while pure TiO2 showed only 2 m2/g.
