Sonolysis of an oxalic acid solution under xenon lamp irradiation.
The photosonolysis of oxalic acid was carried out in an Ar atmosphere. The detectable products of sonolysis were CO(2), CO, H(2), and H(2)O(2). The yield of CO(2) was higher than that for the sum of sonolysis and photolysis reactions. Namely, a synergistic effect was observed during simultaneous irradiations of 200 kHz ultrasound and Xe lamp. The degradation of oxalic acid was promoted by active species such as H(2)O(2) produced from water by sonolysis. An oxalic acid-H(2)O(2) complex is likely to be present in the solution, but could not be detected. The effects of not only the photo-irradiation but also the thermal or incident energy during Xe lamp illumination were also considered.
Graduate School of Meisei University, College of Chemistry, 2-1-1, Hodokubo, Hino-shi, Tokyo 191-8506, Japan.
Hisashi
H
Tanaka
Hisashi
H
Harada
D001128:Argon / Q000737:chemistry* / Q000528:radiation effects*; D008029:Lighting / Q000379:methods*; D019815:Oxalic Acid / Q000737:chemistry* / Q000528:radiation effects*; D012996:Solutions / Q000737:chemistry / Q000528:radiation effects; D013010:Sonication; D014978:Xenon
D012996:Solutions; D014978:Xenon; D001128:Argon; D019815:Oxalic Acid