Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256208 |
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Title: | The detection and identification of short-lived free radicals produced in glow-discharge electrolysis by ESR spectroscopy | ||||
Author: | Gavin, D. L. |
ISNI:
0000 0001 3492 5990
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Awarding Body: | University of Aberdeen | ||||
Current Institution: | University of Aberdeen | ||||
Date of Award: | 1980 | ||||
Availability of Full Text: |
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Abstract: | |||||
Glow-discharge electrolysis (GDE) has long been thought to proceedby a mechanism involving free radicals. Studies of the radical reactions have centred on the use of inorganic scavengers such as ferrous, cerous, ferrocyanide and azide ions. This thesis describes the application of the technique of spin trapping to GDE, and provides the first clear identification of the free radicals formed.Using 5,5-dimethylpyrroline-t-oxide (DMPO) as the spin trap, the radicals formed in the GDE of inert aqueous electrolytes were found to be the hydrogen atom and the hydroxyl radical. No evidence for the presence of the hydrated electron was found. In the GDE of aqueous solutions of organic substrates the main radical trapped was usually the result of hydrogen abstraction reactions.During the course of the spin trapping experiments, it was concluded that the spin adducts formed were extensively dimerised. This was most noticeable in the case of the hydrogen atom adduct where the concentration of monomer increased by 150% with a 200C rise in temperature.
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Supervisor: | Not available | Sponsor: | Not available | ||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||
EThOS ID: | uk.bl.ethos.256208 | DOI: | Not available | ||
Keywords: | Atomic physics & molecular physics | ||||
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