Effect of dimethyl sulfoxide addition on ultrasonic degradation of methylene blue
Effect of dimethyl sulfoxide addition on ultrasonic degradation of methylene blue
复制标题
二甲亚砜添加量对超声波降解亚甲基蓝的影响
DOI：
10.7567/jjap.55.07ke01
复制
发表时间：
2016
影响因子：
1.5
通讯作者：
A. Shono
中科院分区：
文献类型：
--
作者：
Kaho Shimakage;D. Kobayashi;Masakazu Naya;H. Matsumoto;Yuichiro Shimada;K. Otake;A. Shono
以亚甲基蓝溶液为研究对象，分别在二甲基亚砜（DMSO）作为自由基清除剂存在和不存在的条件下，研究了不同频率下，DMSO对亚甲基蓝溶液超声降解速率常数的影响. DMSO的加入降低了亚甲基蓝的降解速率，羟基自由基在亚甲基蓝的降解中起重要作用。然而，降解反应并没有停止与DMSO的加入，和在DMSO的存在下的降解速率常数不受超声频率。
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.