Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves.
Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves.
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DOI：
10.1016/j.ultsonch.2023.106559
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发表时间：
2023-10
影响因子：
8.4
通讯作者：
Kwan, James
中科院分区：
文献类型：
--
作者：
Wong, Cherie C. Y.;Raymond, Jason L.;Usadi, Lillian N.;Zong, Zhiyuan;Walton, Stephanie C.;Sedgwick, Adam C.;Kwan, James
迄今为止，大多数声化学反应器受到分散声能的限制。构建了一种新型反应器设计（“SonoCYL”），可产生180°超声波。该设计使惯性空化的压力强烈的局部区域。SonoCYL是一种比其他常规反应器更有效的声化学反应器。声化学是利用超声波通过气体/蒸汽腔的惯性塌陷产生高活性自由基物质，是制氢、废水处理和化学合成与改性的绿色替代方案。然而，目前的声化学反应器往往受到其设计的限制，导致效率和产量低，反应动力学慢。在这里，我们构建了一种新型的声化学反应器设计，创建圆柱形会聚超声波，以创建一个强烈的局部区域的高声压振幅（15 MPaPKPK）能够自发成核空化。利用一种新的剂量测定技术，我们确定了声学参数对羟基自由基（HO·）的产量，HO·生产率，并最终我们的反应器的声化学效率（SE）的影响。与其他传统反应器和文献相比，我们的反应器设计具有显著更高的HO·生产率和SE。
Most sonochemical reactors to date are limited by dispersed acoustic energy. Constructed a novel reactor design (“SonoCYL”) that creates 180° ultrasound waves. The design enabled an intense localised region of pressure for inertial cavitation. SonoCYL is a more efficient sonochemical reactor than other conventional reactors. Sonochemistry is the use of ultrasound to generate highly reactive radical species through the inertial collapse of a gas/vapour cavity and is a green alternative for hydrogen production, wastewater treatment, and chemical synthesis and modifications. Yet, current sonochemical reactors often are limited by their design, resulting in low efficacy and yields with slow reaction kinetics. Here, we constructed a novel sonochemical reactor design that creates cylindrically converging ultrasound waves to create an intense localised region of high acoustic pressure amplitudes (15 MPaPKPK) capable of spontaneously nucleating cavitation. Using a novel dosimetry technique, we determined the effect of acoustic parameters on the yield of hydroxyl radicals (HO•), HO• production rate, and ultimately the sonochemical efficiency (SE) of our reactor. Our reactor design had a significantly higher HO• production rate and SE compared to other conventional reactors and across literature.
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DOI：
10.1098/rsta.1999.0330
发表时间：
1999-02-15
影响因子：
5
作者：
Suslick, KS;Didenko, Y;Wong, M
通讯作者：
Wong, M
影响因子：
2.4
作者：
Weninger, KR;Camara, CG;Putterman, SJ
通讯作者：
Putterman, SJ
影响因子：
8.4
作者：
Su X;Jonnalagadda US;Bharatula LD;Kwan JJ
通讯作者：
Kwan JJ
影响因子：
8.4
作者：
Rajamma DB;Anandan S;Yusof NSM;Pollet BG;Ashokkumar M
通讯作者：
Ashokkumar M
影响因子：
8.4
作者：
Serna-Galvis EA;Porras J;Torres-Palma RA
通讯作者：
Torres-Palma RA