Characterization of a TiO2 photocatalyst synthesized by the solvothermal method and its catalytic performance for CHCl3 decomposition
作者： Misook Kang , Sang-Yeob Lee , Chan-Hwa Chung , Sung M. Cho , Gui Young Han
DOI: 10.1016/S1010-6030(01)00501-9
关键词: Desorption 、 Thermal treatment 、 Chemical decomposition 、 Nuclear chemistry 、 Chemistry 、 Sol-gel 、 Catalysis 、 Solvothermal synthesis 、 Photocatalysis 、 Anatase 、 Analytical chemistry
摘要: Abstract It is considered that the solvothermal method in this study renders a reliable synthesis procedure of TiO2 photocatalyst having anatase structure nano size. Two kinds photocatalysts were synthesized by using sol–gel and methods, then their physical properties catalytic performances compared. The powder (Cat. 2) obtained at 300°C exhibited pure without any further treatment, while 1) prepared was transformed to after thermal treatment 500°C for 3 h. Cat. 2 had higher surface area (121 m2/g) charge (+24.1 mV) than 1 (51 m2/g, +16.4 mV). In addition, activation energy H2O desorption over very high. These results show hydrophilic. chloroform (CHCl3) decomposition under UV-light (254 nm, 24 W/m2) with O2 bubbling (500 ml/min), performance considerably 1. More 95% decomposed 2 h 2.
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