Synthesis of TiO2-entrapped EFAL-removed Y-zeolites: Novel photocatalyst for decomposition of 2-methylisoborneol |
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| Affiliation: | 1. Molecular/Nano Photochemistry and Photonics Laboratory, Department of Chemistry, Chungnam National University, Daejeon 305-764, Republic of Korea;2. Institute for Environmental Chemistry, University of Bremen, P.O. Box 3304, Bremen D-28334, Germany;1. Egyptian Petroleum Research Institute, P.O. Box 9540, Nasr City, Cairo 11727, Egypt;2. Department of Chemistry, Faculty of Science, Suez University, Suez, Egypt;1. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji, Tokyo 192-0397, Japan;2. Japan Science and Technology Agency, CREST, 4-1-8 Hon-cho, Kawaguchi, Saitama 332-0012, Japan;1. Pharmacology Research Laboratories, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba-shi, Ibaraki 305-8585, Japan;2. Analysis & Pharmacokinetics Research Laboratories, Astellas Pharma Inc., 5-2-3 Tokodai, Tsukuba-shi, Ibaraki 300-2698, Japan;3. Fermentation and Biotechnology Laboratories, Astellas Pharma Inc., 156 Nakagawara, Kiyosu-shi, Aichi 452-0915, Japan;4. Institute of Applied Biochemistry and Graduate School of Life and Environmental Sciences, The University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan;5. Research Management, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba-shi, Ibaraki 305-8585, Japan;1. Materials Processing Unit, National Institute for Materials Science, Tsukuba, Ibaraki 305-0047, Japan;2. Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan;3. Department of Chemical Science and Technology, Hosei University, Koganei, Tokyo 184-8584, Japan;1. CIEMAT-Renewable Energy Division, FOTOAIR-CIEMAT, Group of Photocatalytic Treatment of Pollutant in Air, Avda. Complutense, 40, 28040 Madrid, Spain;2. ICTS-CNME, Universidad Complutense de Madrid, 28040 Madrid, Spain |
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| Abstract: | As a new photocatalyst, TiO2-entrapped EFAL (extra-framework-aluminium)-removed Y-zeolites (TiO2–EFAL-removed Y-zeolites) were synthesized, and they were applied to photocatalytic decomposition of 2-methylisoborneol (2-MIB) dissolved in water. UV-absorption spectroscopic and GC-mass spectrometric studies released that the photocatalytic decomposition of 2-MIB is achieved through formation of a cyclopentene-type intermediate. It was found by kinetic studies that TiO2–EFAL-removed Y-zeolites are highly adsorptive and their photocatalytic quantum efficiency was about 0.04, much larger than that of Degussa P-25 TiO2. These results suggest that TiO2–EFAL-removed Y-zeolites would be promising photocatalysts for efficient and rapid removal of taint compounds in natural water resources. |
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