Photoactivity of tungsten and niobium composite of titania under UV irradiation
TiO2 has been shown to be excellent photoactive material in the presence of UV light. In order to make TiO2 a more efficient photocatalyst several attempts are being made. The present work attempts to address the issue through WO3-TiO2 (TW sample) and Nb2O5-TiO2 (TN sample) composites. Both the com...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Applied Science Innovations Private Limited
2019-06-01
|
| Series: | Carbon: Science and Technology |
| Subjects: | |
| Online Access: | http://www.applied-science-innovations.com/cst-web-site/CST-11-2-2019/CST-347-11-2-2019-57-64.pdf |
| Summary: | TiO2 has been shown to be excellent photoactive material in the presence of UV light. In order to make TiO2 a more efficient photocatalyst several attempts are being made. The present work
attempts to address the issue through WO3-TiO2 (TW sample) and Nb2O5-TiO2 (TN sample) composites. Both the composite were synthesized through sol-gel process. The composites were
characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and UV–Visible spectrophotometer. The composites lower band gap value than DP25. This effect also seems to be reflected in photo-degradation experiment. Photo-degradation of methylene blue (MB) dye, in the presence of Nb2O5-TiO2, WO3–TiO2 composite and DP25 under UV irradiation was studied. WO3–TiO2 composites have superior photoactivity than Degussa P25 (DP25) while Nb2O5-TiO2 composite seems to have deteriorating effect on photoactivity of TiO2. |
|---|---|
| ISSN: | 0974-0546 0974-0546 |