Ultrasound promoted reaction of Rhodamine B with sodium hypochlorite using sonochemical and dental ultrasonic instruments
Ultrasound promoted reaction of Rhodamine B with sodium hypochlorite using sonochemical and dental ultrasonic instruments
复制标题
DOI：
10.1016/j.ultsonch.2011.06.022
复制
发表时间：
2012-03-01
影响因子：
8.4
通讯作者：
Price, Gareth J.
中科院分区：
文献类型：
--
作者：
Tiong, T. Joyce;Price, Gareth J.
本文研究了声化学加速次氯酸钠漂白罗丹明B的作用。使用20 kHz超声波喇叭，结果表明，超声波可以显着缩短处理时间和/或反应所需的次氯酸盐浓度。已经确定了反应过程中形成的许多中间体物种。结果表明，在使用牙科超声仪器的过程中，发生了相同的声化学反应，这种牙科超声仪器用于根管治疗，其中次氯酸盐溶液用作消毒剂。结果表明，两种来源的罗丹明B的降解均符合准一级动力学。空化的分布和由此产生的漂白反应都取决于尖端的设计。因此，漂白反应可用于改善牙科器械的性能，并有助于优化其性能。(C)2011 Elsevier B. V.保留所有权利。
The sonochemical acceleration of bleaching of Rhodamine B by sodium hypochlorite has been studied using ultrasound intensities in the range 0-7W cm(-2). Using a 20 kHz ultrasonic horn, it was shown that ultrasound could significantly shorten the treatment time and/or the concentration of hypochlorite required for the reaction. A number of intermediate species formed during the reaction have been identified. It was demonstrated that the same sonochemical reactions occur during the use of dental ultrasound instruments of the type used in endodontics where hypochlorite solutions act as disinfectants. Results showed pseudo-first order degradation kinetics for the degradation of Rhodamine B for both types of source. Both the distribution of cavitation and the resulting bleaching reactions were dependent on the design of the tips. The bleaching reaction can therefore be used to characterise the behaviour of dental instruments and aid in the optimisation of their performance. (C) 2011 Elsevier B.V. All rights reserved.