Visible-light-induced photocatalytic activity of TiO2?xNy prepared by solvothermal process in urea–alcohol system |
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| Affiliation: | 1. Department of Toxicology, Faculty of Medicine, Aja University of Medical Sciences, Tehran, Iran;2. Social Determinants in Health Promotion Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran;3. Department of Environmental Health Engineering, School of Public Health, Qom University of Medical Sciences, Qom, Iran;4. Department of Environmental Health Engineering, School of Health, Student Research Office, Shahid Beheshti University of Medical Sciences, Tehran, Iran;5. Department of Environmental Health Engineering, Faculty of Health and Research Center for Health Sciences, Hamedan University of Medical Sciences, Hamedan, Iran;6. Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran;7. Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran;8. Evaz School of Health, Larestan School of Medical Sciences, Lar, Iran |
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| Abstract: | Nitrogen-doped anatase, rutile and brookite titania photocatalyst TiO2?xNy which can be excited by visible light were prepared by mixing aqueous TiCl3 solutions with urea ((NH2)2CO) and various type of alcohols followed by solvothermal treatment at 190 °C. The phase composition, crystallinity, microstructure and specific surface area of titania powders greatly changed depending on the pH and type of solvents. Violet, yellowish and grayish TiO2?xNy with excellent visible light absorption and photocatalytic activity were prepared. The TiO2?xNy powders prepared in urea–methanol solution showed excellent photocatalytic ability for the oxidative destruction of nitrogen monoxide under irradiation of visible light λ > 510 nm. |
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