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Abstract：
Active species such as holes, electrons, hydroxyl radicals ((OH)-O-center dot), and superoxide radicals (O-2(center dot-)) involved in the photodegradation process of methyl orange (MO) over TiO2 photocatalyst were detected by several techniques. Using different types of active species scavengers, the results showed that the MO oxidation was driven mainly by the participation of O-2(center dot-), holes and (OH)-O-center dot radicals. Characterized by the liquid chromatography/mass spectrometry, the transversion of the degradation products with the light irradiation time was first analyzed. Combined with the measurement of oxidation reduction potential, dissolved oxygen, conductivity, and pH values, the degradation process of MO on TiO2 under the effect of the active species was revealed. This was the first time that electrodes were introduced to track the degradation process in situ, and these parameters would be helpful to explain the degradation processes of other organic pollutants.
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JOURNAL OF PHYSICAL CHEMISTRY C
ISSN： 1932-7447
Year： 2012
Issue： 5
Volume： 116
Page： 3552-3560
4 . 8 1 4
JCR@2012
3 . 3 0 0
JCR@2023
ESI Discipline： CHEMISTRY;
JCR Journal Grade：1
CAS Journal Grade：2
Cited Count：
WoS CC Cited Count： 338
SCOPUS Cited Count： 341
ESI Highly Cited Papers on the List： 34 Unfold All
WanFang Cited Count：
Chinese Cited Count：
30 Days PV： 0
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