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Characterization of a TiO2 photocatalyst synthesized by the solvothermal method and its catalytic performance for CHCl3 decomposition by Misook Kang; Sang-Yeob Lee; Chan-Hwa Chung; Sung M. Cho; Gui Young Han; Byung-Woo Kim; Ki June Yoon is a Materials Science article available to read on EtoBox.
What is Characterization of a TiO2 photocatalyst synthesized by the solvothermal method and its catalytic performance for CHCl3 decomposition about?
It is considered that the solvothermal method in this study renders a reliable synthesis procedure of the TiO 2 photocatalyst having the anatase structure of nano size. Two kinds of TiO 2 photocatalysts were synthesized by using the sol-gel and solvothermal methods, and then their physical properties and catalytic performances were compared. The TiO 2 powder (Cat. 2) obtained by the solvothermal method at 300 • C exhibited a pure anatase structure without any further treatment, while the TiO 2 powder (Cat. 1) prepared by the sol-gel method was transformed to the anatase structure after thermal treatment at 500 • C for 3 h. Cat. 2 had higher surface area (121 m 2 /g) and surface charge (+24.1 mV) than Cat. 1 (51 m 2 /g, +16.4 mV). In addition, the activation energy for H 2 O desorption over Cat. 2 was very high. These results show that the surface of Cat. 2 is very hydrophilic. In chloroform (CHCl 3 ) decomposition under the UV-light (254 nm, 24 W/m 2 ) with O 2 bubbling (500 ml/min), the catalytic performance of Cat. 2 was considerably higher than that of Cat. 1. More than 95% of the chloroform was decomposed in 2 h over Cat. 2.
Who reads Characterization of a TiO2 photocatalyst synthesized by the solvothermal method and its catalytic performance for CHCl3 decomposition?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Misook Kang; Sang-Yeob Lee; Chan-Hwa Chung; Sung M. Cho; Gui Young Han; Byung-Woo Kim; Ki June Yoon
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1010-6030)
- Published
- 2001
- Language
- EN
- Field
- Materials Science (Physical Sciences)