Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves
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 lim...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-10-01
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| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417723002717 |
| _version_ | 1797733872848338944 |
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| author | Cherie C.Y. Wong Jason L. Raymond Lillian N. Usadi Zhiyuan Zong Stephanie C. Walton Adam C. Sedgwick James Kwan |
| author_facet | Cherie C.Y. Wong Jason L. Raymond Lillian N. Usadi Zhiyuan Zong Stephanie C. Walton Adam C. Sedgwick James Kwan |
| author_sort | Cherie C.Y. Wong |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-12T12:35:56Z |
| format | Article |
| id | doaj.art-0fc92ea702e7432faf9809f6ef8bb084 |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-03-12T12:35:56Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-0fc92ea702e7432faf9809f6ef8bb0842023-08-29T04:17:18ZengElsevierUltrasonics Sonochemistry1350-41772023-10-0199106559Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound wavesCherie C.Y. Wong0Jason L. Raymond1Lillian N. Usadi2Zhiyuan Zong3Stephanie C. Walton4Adam C. Sedgwick5James Kwan6Department of Engineering Science, Parks Road, Oxford OX1 3PJ, UKDepartment of Engineering Science, Parks Road, Oxford OX1 3PJ, UKDepartment of Engineering Science, Parks Road, Oxford OX1 3PJ, UKDepartment of Engineering Science, Parks Road, Oxford OX1 3PJ, UKDepartment of Engineering Science, Parks Road, Oxford OX1 3PJ, UKDepartment of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, OX1 3TA, UKDepartment of Engineering Science, Parks Road, Oxford OX1 3PJ, UK; Corresponding author.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.http://www.sciencedirect.com/science/article/pii/S1350417723002717SonochemistryUltrasoundCavitationReactive Oxygen SpeciesDosimetry |
| spellingShingle | Cherie C.Y. Wong Jason L. Raymond Lillian N. Usadi Zhiyuan Zong Stephanie C. Walton Adam C. Sedgwick James Kwan Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves Ultrasonics Sonochemistry Sonochemistry Ultrasound Cavitation Reactive Oxygen Species Dosimetry |
| title | Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves |
| title_full | Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves |
| title_fullStr | Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves |
| title_full_unstemmed | Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves |
| title_short | Enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves |
| title_sort | enhancement of sonochemical production of hydroxyl radicals from pulsed cylindrically converging ultrasound waves |
| topic | Sonochemistry Ultrasound Cavitation Reactive Oxygen Species Dosimetry |
| url | http://www.sciencedirect.com/science/article/pii/S1350417723002717 |
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