Surface properties and photoactivity of TiO2 treated with electron beam |
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| Affiliation: | 1. Department of Environmental Engineering, Donshin University, 252 Daeho-Dong, Naju, 520-714, South Korea;2. Biology Research Centre, Dongshin University, 252 Daeho-Dong, Naju, 520-714, South Korea;3. Department of Environmental Engineering, Konkuk University, 1 Hawayang-Dong, Gwangjin-Gu, Seoul 143-701, South Korea;4. Section Radiation Biology, Dept. of Nutrition, Faculty of Life Sciences University of Vienna, Althanstr. 14, A-1090 Wien, Austria;1. School of Chemistry, Damghan University, Damghan, Islamic Republic of Iran;2. Department of Chemistry, Payam-e-noor University, Tehran, Islamic Republic of Iran;1. Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300, Gambang, Kuantan, Pahang, Malaysia;2. School of Chemical Engineering, The University of New South Wales, NSW, 2051, Australia;3. Department of Chemical Engineering, King Faisal University, Al Hasa, Saudi Arabia;1. Department of Chemical and Environmental Engineering, Institute Center for Water and Environment (iWater), Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates;2. Paul Scherrer Institute (PSI), Villigen, Switzerland;3. Institute of Physics, Jan Kochanowski University in Kielce, Kielce, Poland;4. Department of Physics and Astronomy, Molecular and Condensed Matter Physics, Ångström Laboratory, Uppsala University, Sweden;5. Department of Chemistry, Physical Chemistry, Ångström Laboratory, Uppsala University, Sweden;6. Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland;1. School of Integrative Engineering, Chung-Ang University, 84 Heukseok-Ro, Dongjak-gu, Seoul 06974, Republic of Korea;2. Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Ave. S.E., Minneapolis, MN 55455, United States;3. Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea;1. Institute of Electronics, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Dhaka 1349, Bangladesh;2. Dept of Materials Science & Engineering, University of Rajshahi, Rajshahi 6205, Bangladesh;3. Dept of Physics, The University of Lahore, Lahore 54000, Pakistan;4. Institute of Fuel Research and Development, Bangladesh Council of Scientific and Industrial Research, Dhaka 1205, Bangladesh |
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| Abstract: | The improvement of the TiO2-photoactivitiy by electron beam treatment (1 MeV) as a function of the absorbed radiation dose (MGy) is reported. The radiation-induced effects in the TiO2 crystal structure, e.g. change of the Ti3+/Ti4+ ratio, increase of the photoactivity, etc. were investigated. Three methods were implemented in this respect: for the change of the TiO2 crystal structure X-ray photoelectron spectroscopy and photoluminescence spectroscopy were applied. The photocatalytic activity of the EB-treated TiO2 was tested by taking the degree of methylene blue photodegradation as a measure of the achieved effect. The obtained experimental data of all testing methods showed that in TiO2 at an absorbed dose of 0.5 MGy optimum changes in crystal structure of the catalyst occur, resulting in the highest photocatalytic efficiencies. |
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