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- W2577020439 abstract "A commercially available TiO2 (P25) was modified to produce nitrogen (N) doped TiO2 prepared by mixing TiO2 powder with various amounts of urea as N precursor using a microwave irradiation heating technique. X-ray photoelectron spectroscopy analysis showed that N chemically bonded with TiO2 produces Ti-N. The measured band gap energy (Eg) of the modified sample was ca. 2.9 eV as detected by UV-Vis/DRS. The optimum modified N doped TiO2 denoted as U3-800 prepared at 230 °C showed an active visible light photoactivity. This observation shows that microwave irradiation is able to form Ti-N at low temperature whereas this previously could not be achieved under conventional heating using a muffle furnace at the same temperature. U3-800 showed visible light active photodegradation for 30, 10 and 5 mg L−1 of reactive red 4, crystal violet and Janus green dyes, respectively, in less than 105 min to complete decolorization under suspension mode while no photocatalytic activity was observed under pristine TiO2 under the same conditions. Immobilization of a U3-800 sample was carried out using DSAT as a thin layer binder and the photoactivity of Immobilize/U3-800/DSAT is comparable with the suspension mode. Surprisingly, immobilized/U3-800 has a strong coating with glass support material and can be continuously used for 30 cycles without affecting photoactivity performance." @default.
- W2577020439 created "2017-01-26" @default.
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- W2577020439 date "2015-02-24" @default.
- W2577020439 modified "2023-09-25" @default.
- W2577020439 title "Modification and characterization of microwave assisted N doped TiO2 – a photodegradation study under suspension and immobilized system" @default.
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- W2577020439 doi "https://doi.org/10.2166/wqrjc.2017.001" @default.
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