Synthesis of Sn4+ Doped TiO2 Nanotube and its Photocatalytic Activity
| Periodical | Materials Science Forum (Volume 724) |
|---|---|
| Main Theme | Eco-Materials Processing and Design XIII |
| Edited by | Jing Sun, Lian Gao, Hyungsun Kim, Jian Feng Yang, Tohru Sekino and Soo Wohn Lee |
| Pages | 21-24 |
| DOI | 10.4028/www.scientific.net/MSF.724.21 |
| Citation | Hong Ying Dong et al., 2012, Materials Science Forum, 724, 21 |
| Online since | June, 2012 |
| Authors | Hong Ying Dong, Yan Ping Ren, Kai Ming Huang, Wei Yan He, Wen Ma |
| Keywords | Photocatalytic Activity, Sn4+ Doping, TiO2 |
| Price | US$ 28,- |
The PVP+Ti (OC4H9)4+SnCl4·5H2O/sesame oil composite fibers were successfully prepared by a sol-gel method combined with a coaxial electrospinning technique. The Sn4+/TiO2 nanotubes were obtained by calcining the above-mentioned composite fibers and characterized by XRD and TEM. XRD results show that increasing reaction temperature facilitates to form a stable phase. TEM results show that the Sn4+/TiO2 nanotubes have smooth surface with wall thickness of ~120 nm and are composed of small particles of ~5 nm. The photocatalytic activity of Sn4+/TiO2 nanotubes was investigated. The photodegradation efficiency of Sn4+/TiO2 nanotubes decreases in UV region but increases in visible light region. The photocatalytic properties of three 0.52at% Sn4+/TiO2 nanomaterials with different morphologies were also evaluated. The photodegradation efficiencies of Sn4+/TiO2 nanopowers, Sn4+/TiO2 nanofibers and Sn4+/TiO2 nanotubes increase in visible light region in sequence. In summary, chemical modification by doping Sn4+ and morphology changing for TiO2 can improve its photocatalytic activity in visible light region significantly.
