High-pressure sonoelectrochemistry in aqueous solution: Soft cavitation under CO2
A novel high-pressure sonoelectrochemical cell has been developed in order to study the effect of pressure on cavitation and acoustic streaming in electrochemical processes. The reversible one electron reduction of a solution of Ru(NH3)63+ in aqueous 0.1 M KCl at a 25 μm diameter Pt microdisk electr...
| Autors principals: | , , , |
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| Format: | Journal article |
| Idioma: | English |
| Publicat: |
1998
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| _version_ | 1826300475543126016 |
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| author | Goldfarb, D Corti, H Marken, F Compton, R |
| author_facet | Goldfarb, D Corti, H Marken, F Compton, R |
| author_sort | Goldfarb, D |
| collection | OXFORD |
| description | A novel high-pressure sonoelectrochemical cell has been developed in order to study the effect of pressure on cavitation and acoustic streaming in electrochemical processes. The reversible one electron reduction of a solution of Ru(NH3)63+ in aqueous 0.1 M KCl at a 25 μm diameter Pt microdisk electrode was studied under up to 60 bar pressure of argon and carbon dioxide and in the presence of ultrasound. The resulting cathodic current response was interpreted to be composed of a steady macroscopic streaming induced component and a transient spikelike component detected after the onset of the cavitation. The threshold for the cavitation process was strongly dependent on pressure and increased monotonically in the presence of argon. However, the threshold appeared at lower ultrasound power when pressurizing with carbon dioxide and even decreased at higher pressures (>40 bar) in the presence of CO2. The analysis of the observed phenomena is possible in terms of the mechanical pressure, the surface tension, and the formation of a liquid CO2 phase. |
| first_indexed | 2024-03-07T05:17:45Z |
| format | Journal article |
| id | oxford-uuid:ddcfdb7a-46f8-4d27-b9ae-424ef4188a7f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:17:45Z |
| publishDate | 1998 |
| record_format | dspace |
| spelling | oxford-uuid:ddcfdb7a-46f8-4d27-b9ae-424ef4188a7f2022-03-27T09:27:39ZHigh-pressure sonoelectrochemistry in aqueous solution: Soft cavitation under CO2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ddcfdb7a-46f8-4d27-b9ae-424ef4188a7fEnglishSymplectic Elements at Oxford1998Goldfarb, DCorti, HMarken, FCompton, RA novel high-pressure sonoelectrochemical cell has been developed in order to study the effect of pressure on cavitation and acoustic streaming in electrochemical processes. The reversible one electron reduction of a solution of Ru(NH3)63+ in aqueous 0.1 M KCl at a 25 μm diameter Pt microdisk electrode was studied under up to 60 bar pressure of argon and carbon dioxide and in the presence of ultrasound. The resulting cathodic current response was interpreted to be composed of a steady macroscopic streaming induced component and a transient spikelike component detected after the onset of the cavitation. The threshold for the cavitation process was strongly dependent on pressure and increased monotonically in the presence of argon. However, the threshold appeared at lower ultrasound power when pressurizing with carbon dioxide and even decreased at higher pressures (>40 bar) in the presence of CO2. The analysis of the observed phenomena is possible in terms of the mechanical pressure, the surface tension, and the formation of a liquid CO2 phase. |
| spellingShingle | Goldfarb, D Corti, H Marken, F Compton, R High-pressure sonoelectrochemistry in aqueous solution: Soft cavitation under CO2 |
| title | High-pressure sonoelectrochemistry in aqueous solution: Soft cavitation under CO2 |
| title_full | High-pressure sonoelectrochemistry in aqueous solution: Soft cavitation under CO2 |
| title_fullStr | High-pressure sonoelectrochemistry in aqueous solution: Soft cavitation under CO2 |
| title_full_unstemmed | High-pressure sonoelectrochemistry in aqueous solution: Soft cavitation under CO2 |
| title_short | High-pressure sonoelectrochemistry in aqueous solution: Soft cavitation under CO2 |
| title_sort | high pressure sonoelectrochemistry in aqueous solution soft cavitation under co2 |
| work_keys_str_mv | AT goldfarbd highpressuresonoelectrochemistryinaqueoussolutionsoftcavitationunderco2 AT cortih highpressuresonoelectrochemistryinaqueoussolutionsoftcavitationunderco2 AT markenf highpressuresonoelectrochemistryinaqueoussolutionsoftcavitationunderco2 AT comptonr highpressuresonoelectrochemistryinaqueoussolutionsoftcavitationunderco2 |