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Water Science & Technology Vol 49 No 4 pp 177 - 181 © IWA Publishing 2004 A novel synthetic method for nanosized crystalline titania for use in the decomposition of dyesC.Y. Yun*, J. Moon**, K. Chung***, M. Kang****, C.B. Shin*****, K. Choi****** and J. Yi********School of Chemical Engineering, Seoul National University, Seoul 151-742, Republic of Korea (E-mail: chaos117@snu.ac.kr; mister@snu.ac.kr) ABSTRACT Photocatalytically active nanocrystalline titania particles were prepared using a hydrothermal process, by controlling the particle size and crystallinity. The crystalline structures and morphologies of the particles were characterized by X-ray diffraction and transmission electron microscopy. The BET method was used to determine the surface area and verify the grain size. To estimate the photocatalytic activity of the synthesized particles, a dye photodegradation experiment was carried out and the activity of the particles was compared with that of conventional titania. The results show that synthesized nanocrystalline titania particles had a higher photocatalytic activity than that of conventional titania. These findings provide a basis for the preparation of more effective and useful materials for use in AOP applications. PAY-PER-VIEW: Buy this article for £23.5 (IWA MEMBER PRICE: £17.62) - All prices include VAT |
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