Photocatalytic oxidation of 2,6-dichloroindophenol in the titanium dioxide aqueous suspension
نویسندگان
چکیده
Photocatalytic oxidation of sodium salt of 2,6-dichloroindophenol (DCIP) in titanium dioxide aqueous suspension has been studied. DCIP is photocatalytically oxidized on the active Ti02 surface by the medium pres sure Hg lamp with pyrex sleeve radiation (A>280nm). The apparent integral quantum yield of the DCIP decomposition was determined. Photocatalytic decomposition of DCIP in aqueous suspension of Ti02 can be described by the formal first-order kinetics. The same results can be obtained for Ti02 (P25) during the Hg lamp irradiation and solar exposure as well. The reaction is suitable for testing of the semiconductor powder photocatalytic activity.
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