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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1021/la902418v
|2 doi
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|a eng
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| 100 |
1 |
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|a Henstridge, Martin C
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Generator-collector experiments at a single electrode
|b exploring the general applicability of this approach by comparing the performance of surface immobilized versus solution phase sensing molecules
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|c 2010
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 11.03.2010
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|a Date Revised 13.01.2010
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We demonstrate proof-of-concept that generator-collector experiments can be performed at a single macroelectrode and used to determine mechanistic information. The practical advantages of such a system over conventional generator-collector techniques are also outlined. The single-electrode generator-collector technique is applied to study the known mechanism of oxygen reduction in aqueous conditions as a model system. We seek to demonstrate that the single-electrode generator-collector approach is capable of detecting local pH changes, immediately adjacent to the electrode surface during a redox reaction. Experiments are performed using a molecular pH probe attached to the electrode surface. Comparison of experimental data with numerical simulations verifies that the reduction of oxygen at pH 6.8 proceeds via a two-electron, two-proton mechanism. Experiments were also performed with a molecular pH probe dissolved in the electrolyte solution in order to explore the feasibility of this approach, which is potentially applicable to a much wider range of electrochemical systems
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|a Journal Article
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1 |
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|a Wildgoose, Gregory G
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Compton, Richard G
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1991
|g 26(2010), 2 vom: 19. Jan., Seite 1340-6
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:26
|g year:2010
|g number:2
|g day:19
|g month:01
|g pages:1340-6
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|u http://dx.doi.org/10.1021/la902418v
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