Effect of dimethyl sulfoxide addition on ultrasonic degradation of methylene blue

The ultrasonic degradation of methylene blue was carried out in the absence and presence of dimethyl sulfoxide (DMSO) as a radical scavenger for various frequencies, and the effects of DMSO addition on the degradation rate constant estimated by assuming first-order kinetics were investigated. The de...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2016-07, Vol.55 (7S1), p.7-07KE01
Main Authors: Shimakage, Kaho, Kobayashi, Daisuke, Naya, Masakazu, Matsumoto, Hideyuki, Shimada, Yuichiro, Otake, Katsuto, Shono, Atsushi
Format: Article
Language:English
Subjects:
Degradation
Dimethyl sulfoxide
Hydroxyl radicals
Methylene blue
Plugs
Radicals
Rate constants
Scavengers
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Summary:The ultrasonic degradation of methylene blue was carried out in the absence and presence of dimethyl sulfoxide (DMSO) as a radical scavenger for various frequencies, and the effects of DMSO addition on the degradation rate constant estimated by assuming first-order kinetics were investigated. The degradation reaction rate decreased with DMSO addition, and hydroxyl radicals were observed to play important roles in the degradation of methylene blue. However, the degradation reaction did not stop with DMSO addition, and the degradation rate constant in the presence of DMSO was not affected by ultrasonic frequency.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.55.07KE01