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Environmental Engineering Research 2001;6(4): 241-249.
EFFECT OF INORGANIC IONS IN TiO2 THIN FILM-PHOTOCATALYST OF 2-CHLOROPHENOL
Oh-Jin Jung, and Young-Nam Chun
School of Environmental Engineering, Chosun university, Gwang-ju 501-759, Korea
Corresponding Author: Oh-Jin Jung ,Tel: +82-62-230-6644, Fax: +82-62-234-6754 , Email: ojjung@mail.chosun.ac.kr
Received: May 20, 2001;  Accepted: September 18, 2001.
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ABSTRACT
The influence of 8 anionic and 7 cationic compounds on performance of a TiO2 thin film-photocatalyst reactor method was examined. The TiCh thin film photocatalyst was prepared by CVD(chemical vapor deposition) method. The degradation of 2-chlorophenol(2-CP) in Milli-Q water was used to monitor catalyst performance. The most of anions excepting the NO3- and CIO3- ion were found to inhibit the photocatalytic activity in the sample concentration tested. The catalytic activity was substantially inhibited by the presence of V5+, W6+, and Mo6+ ion in the sample solution. However, the cations such as Zn2+, Nd3+, Pd2+, and Ag+ improved their photocatalytic efficiency. Especially, Ag+ ion exhibited the best improvement, and the catalytic efficiency was further improved when Ag/TiO2-SS was used in combination with H2O2.
Keywords: anions | cations | efficiency | photocatalytic degradation | TiO2 thin film
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