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Visible light active photocatalytic C-doped titanium dioxide films deposited via reactive pulsed DC magnetron co-sputtering: Properties and photocatalytic activity
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ratova, Marina Klaysri, Rachan Praserthdam, Piyasan Kelly, Peter |
| Copyright Year | 2018 |
| Abstract | Abstract Doping of TiO 2 with carbon is known to be an efficient method of enhancing visible light photocatalytic activity. The present work describes the deposition of carbon-doped titania coatings deposited by reactive magnetron co-sputtering of Ti and C targets. Undoped titania coatings were produced under similar deposition conditions for comparison purposes. Following deposition, all coatings were annealed in air at 873 K for 30 min to develop the required crystalline structure; and then analysed with EDS, XRD, AFM, XPS and UV–visible spectrophotometry. A number of tests, including methylene blue and stearic acid decomposition tests, and photo-induced hydrophilicity measurements, were employed for the assessment of the photocatalytic properties of the C-doped and un-doped titanium dioxide coatings under UV and visible light irradiation. It was found that carbon-doped titania coatings significantly outperformed undoped titania when using both visible and UV irradiation. Similar trends were observed for other properties. While excessive carbon doping has been shown to have a negative effect on the photocatalytic properties of the titanium dioxide, overall, carbon doping via reactive co-sputtering has been confirmed as an efficient method of photocatalytic property enhancement. This is due to a narrowing of the bandgap and to extended lifetimes of the photo-generated charge carriers. |
| Starting Page | 214 |
| Ending Page | 224 |
| Page Count | 11 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.vacuum.2018.01.003 |
| Volume Number | 149 |
| Alternate Webpage(s) | https://e-space.mmu.ac.uk/619737/1/Manuscript%202%20with%20reviewers%20comments%20addressed%20PK%20(1).pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/j.vacuum.2018.01.003 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
