Photocatalytic performance of Sn-doped TiO sub(2) nanostructured mono and double layer thin films for Malachite Green dye degradation under UV and vis-lights

• Published in: Journal of hazardous materials Vol. 144; no. 1-2; pp. 140 - 146
• Main Authors: Sayilkan, F, Asilturk, M, Tatar, P, Kiraz, N, Arpac, E, Sayilkan, H
• Format: Journal Article
• Language: English
• Published: 01-06-2007
• ISSN: 0304-3894
• DOI: 10.1016/j.jhazmat.2006.10.011

Nanostructure Sn super(4) super(+)-doped TiO sub(2) based mono and double layer thin films, contain 50% solid ratio of TiO sub(2) in coating have been prepared on glass surfaces by spin-coating technique. Their photocatalytic performances were tested for degradation of Malachite Green dye in solution under UV and vis irradiation. Sn super(4) super(+)-doped nano-TiO sub(2) particle a doping ratio of about 5[Sn super(4) super(+)/Ti(OBu super(n)) sub(4); mol/mol%] has been synthesized by hydrotermal process at 225 super(o)C. The structure, surface and optical properties of the thin films and/or the particles have been investigated by XRD, BET and UV/vis/NIR techniques. The results showed that the double layer coated glass surfaces have a very high photocatalytic performance than the other one under UV and vis lights. The results also proved that the hydrothermally synthesized nano-TiO sub(2) particles are fully anatase crystalline form and are easily dispersed in water. The results also reveal that the coated surfaces have hydrophilic property.