TY - JOUR
T1 - Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves
AU - Sedgwick, Adam
N1 - Funding Information:
C. C. Y. W. thanks the Department of Engineering Science (University of Oxford) and Balliol College (University of Oxford) for their support through the DTP Scholarship and the Dervouguilla Scholarship, respectively. L. N. U. thanks the Rhodes Trust for their support through the Rhodes Scholarship. A. C. S. would like to thank the Glasstone Research fellowship (University of Oxford) and Jesus College, Oxford for support as Junior Research Fellow.
Publisher Copyright:
© 2023 The Author(s)
PY - 2023/10
Y1 - 2023/10
N2 - 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[rad]), HO[rad] production rate, and ultimately the sonochemical efficiency (SE) of our reactor. Our reactor design had a significantly higher HO[rad] production rate and SE compared to other conventional reactors and across literature.
AB - 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[rad]), HO[rad] production rate, and ultimately the sonochemical efficiency (SE) of our reactor. Our reactor design had a significantly higher HO[rad] production rate and SE compared to other conventional reactors and across literature.
UR - http://www.scopus.com/inward/record.url?scp=85169502403&partnerID=8YFLogxK
U2 - 10.1016/j.ultsonch.2023.106559
DO - 10.1016/j.ultsonch.2023.106559
M3 - Article
SN - 1350-4177
VL - 99
SP - 106559
JO - Ultrasonics Sonochemistry
JF - Ultrasonics Sonochemistry
M1 - 106559
ER -
