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Performance of a Metal Ion‐Doped Titania‐Coated Planar Photocatalytic Microreactor
Author(s) -
Lin Cheng,
Liu Mingyan,
Yang Zhongguo
Publication year - 2016
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201400776
Subject(s) - microreactor , photocatalysis , materials science , chemical engineering , mineralization (soil science) , metal , metal ions in aqueous solution , degradation (telecommunications) , doping , inorganic chemistry , photochemistry , catalysis , chemistry , optoelectronics , metallurgy , organic chemistry , nitrogen , computer science , engineering , telecommunications
A novel planar photocatalytic microreactor coated with metal ion‐doped TiO 2 was fabricated by chemical etching and sol‐gel techniques. The photocatalytic activity of the microreactor was evaluated by studying the degradation of methylene blue (MB) under ultraviolet light, visible light, and sunlight, and encouraging results were obtained. Analyses of the degradation products indicate that demethylation and ring‐opening reactions took place and that the mineralization of MB is a slow process. Kinetic studies of the MB degradation show that metal ion doping increases the reaction order. Comparing the applied microreactor with other conventional microchannel photocatalytic reactors, nearly the same degradation ratios and relatively higher degradation rates per unit reaction volume were obtained.