Abstract
The kinetics of photoreduction of methyl orange by ascorbic acid sensitized by colloidal CdS has been studied. Different experimental factors such a [O2], pH and temperature, as well as the presence of potential competitive species like MV2+ and Cd2+ have been taken as variables in this study. O2 and Cd2+ clearly inhibit the photoreduction but the presence of MV2+ increases the reaction rate. The pH greatly influences the kinetics and temperature (T) has little effect. The results are interpreted using a reaction scheme proposed in earlier papers where dispersions of crystalline CdS were used as the photocatalyst and EDTA as the hole scavenger. © 1993.
Original language | English |
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Pages (from-to) | 47-52 |
Journal | Journal of Photochemistry and Photobiology, A: Chemistry |
Volume | 73 |
DOIs | |
Publication status | Published - 15 Jun 1993 |