Tools
ToolsHenstridge, Martin C., Wildgoose, Gregory and Compton, Richard G. (2010) Generator−collector experiments at a single electrode: Exploring the general applicability of this approach by comparing the performance of surface immobilized versus solution phase sensing molecules. Langmuir, 26 (2). pp. 1340-1346.
Full text not available from this repository.Abstract
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.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Chemistry |
| UEA Research Groups: | Faculty of Science > Research Groups > Physical and Analytical Chemistry (former - to 2017) Faculty of Science > Research Groups > Synthetic Chemistry (former - to 2017) |
| Depositing User: | Rachel Smith |
| Date Deposited: | 31 Mar 2011 10:43 |
| Last Modified: | 22 Dec 2022 11:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/27468 |
| DOI: | 10.1021/la902418v |
Actions (login required)
 |
View Item |