Sonochemistry and sonoluminescence under dual-frequency ultrasound irradiation in the presence of water-soluble solutes
Sonochemistry and sonoluminescence under dual-frequency ultrasound irradiation in the presence of water-soluble solutes
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DOI：
10.1021/jp801763v
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发表时间：
2008-07-10
影响因子：
3.7
通讯作者：
Ashokkumar, Muthupandian
中科院分区：
文献类型：
--
作者：
Brotchie, Adam;Grieser, Franz;Ashokkumar, Muthupandian
声致发光发射。并对典型的实验室规模的高频驻波反应器(355 KHz)在低频脉冲(20 KHz)激励下的声化学效率进行了研究。研究发现，尽管双频超声作用降低了水中的积分声致发光强度和声化学效率，但在溶质的存在下，活性可以得到显著的提高。这种增强效应部分归因于由水溶性溶质引起的气泡合并程度的变化。
The sonoluminescence emission. and sonochernical efficiency of a typical laboratory scale, high-frequency standing wave reactor (355 kHz), stimulated by low-frequency pulses (20 kHz) has been investigated in the presence and absence of some water-soluble solutes, namely, propanol and polyethylene oxide. It has been found that, although dual-frequency sonication causes a decrease in the integrated sonoluminescence intensity and sonochemical efficiency in water, in the presence of solutes, a significant enhancement in activity could be attained. This enhancement effect is ascribed, in part, to changes in the extent of bubble coalescence brought about by the water-soluble solutes.