Effect of Fe-doped TiO2 nanoparticle derived from modified hydrothermal process on the photocatalytic degradation performance on methylene blue
| Autor: | Zhijie Li, Wenzhong Shen, Xiaotao Zu, Wensen He |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Titanium
Anatase Environmental Engineering Materials science Band gap Photochemistry Health Toxicology and Mutagenesis Iron Nanoparticle Mineralogy Metal Nanoparticles Crystallography X-Ray Pollution Hydrothermal circulation Catalysis Amorphous solid Methylene Blue X-ray photoelectron spectroscopy Chemical engineering Microscopy Electron Transmission Photocatalysis Environmental Chemistry Spectrophotometry Ultraviolet Crystallite Waste Management and Disposal |
| Zdroj: | Journal of hazardous materials. 155(3) |
| ISSN: | 0304-3894 |
| Popis: | Anatase Fe-doped TiO 2 nanoparticles with 10–15 nm particles sizes were directly prepared with amorphous TiO 2 nanoparticles and Fe(NO 3 ) 3 ·9H 2 O by hydrothermal method. The TiO 2 crystallite grain sizes decreased with the increase of Fe contents. When Fe contents increased, the diffuse reflectance spectra of Fe-doped TiO 2 nanoparticles displayed a red shift in the band gap transition. And the absorbing band edge moved to visible range when the Fe contents were more than 2 mol%. XPS analysis showed that Fe 3+ was not on the surface of TiO 2 nanoparticles, but inserting into the matrix interior. As a result, the photoactivity degradation of MB on Fe-doped TiO 2 nanoparticles decreased. |
| Databáze: | OpenAIRE |
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