Co-doped mesoporous titania photocatalysts prepared from a peroxo-titanium complex solution
| Autor: | Jong-Ho Kim, Ibrahim El Saliby, Andrew M. McDonagh, Jong Beom Kim, Laszlo Erdei, Ho Kyong Shon |
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| Rok vydání: | 2014 |
| Předmět: |
Anatase
Materials science Diffuse reflectance infrared fourier transform Mechanical Engineering Inorganic chemistry chemistry.chemical_element Pararosaniline Condensed Matter Physics Nitrogen chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry Mechanics of Materials Specific surface area X-ray crystallography Photocatalysis General Materials Science |
| Zdroj: | Materials Research Bulletin. 49:7-13 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2013.08.047 |
| Popis: | In this study, nitrogen doped and nitrogen/silver co-doped TiO2 photocatalsysts were fabricated using a sol-gel method at room temperature. The obtained gels were neutralized, washed with pure water, and calcined at 400 C for 4 h. The photocatalysts were characterized by scanning and transmission electron microscopy, X-ray diffraction, diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, and BET specific surface area. The results showed that spherical particles with anatase structure were produced after annealing at 400 C. N 1s (400 eV) and Ag 3d (367.3 eV) states indicated that nitrogen doping and silver co-doping were in the form of NO bonds and AgO, respectively. The photocatalytic activity of photocatalysts was investigated using a batch reactor system exposed to artificial solar irradiation. Both nitrogen and silver/nitrogen co-doped materials were effective in the photocatalytic degradation of hexamethyl pararosaniline chloride. |
| Databáze: | OpenAIRE |
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