Fickian diffusion constrained on spherical surfaces: voltammetry.
A model is developed for the voltammetric response due to surface charge injection at a single point on the surface of a sphere on whose surface the electroactive material is confined. Accordingly, charge diffusion is constrained to the spherical surface and thus mimicks the voltammetric response of...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2006
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| _version_ | 1797069732708352000 |
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| author | Thompson, M Compton, R |
| author_facet | Thompson, M Compton, R |
| author_sort | Thompson, M |
| collection | OXFORD |
| description | A model is developed for the voltammetric response due to surface charge injection at a single point on the surface of a sphere on whose surface the electroactive material is confined. Accordingly, charge diffusion is constrained to the spherical surface and thus mimicks the voltammetric response of immobilised microparticles derivatised with electroactive material. The full cyclic voltammetric response is investigated, and the peak currents, the peak-to-peak separation and the symmetry of the voltammetric wave are shown to be indicative of the heterogeneous kinetics and the geometry of the adsorbed microparticle. The results show strong deviations from the responses expected for planar diffusion. |
| first_indexed | 2024-03-06T22:28:48Z |
| format | Journal article |
| id | oxford-uuid:57965084-469a-4897-bd88-f1187b0b1b31 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:28:48Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:57965084-469a-4897-bd88-f1187b0b1b312022-03-26T16:57:36ZFickian diffusion constrained on spherical surfaces: voltammetry.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:57965084-469a-4897-bd88-f1187b0b1b31EnglishSymplectic Elements at Oxford2006Thompson, MCompton, RA model is developed for the voltammetric response due to surface charge injection at a single point on the surface of a sphere on whose surface the electroactive material is confined. Accordingly, charge diffusion is constrained to the spherical surface and thus mimicks the voltammetric response of immobilised microparticles derivatised with electroactive material. The full cyclic voltammetric response is investigated, and the peak currents, the peak-to-peak separation and the symmetry of the voltammetric wave are shown to be indicative of the heterogeneous kinetics and the geometry of the adsorbed microparticle. The results show strong deviations from the responses expected for planar diffusion. |
| spellingShingle | Thompson, M Compton, R Fickian diffusion constrained on spherical surfaces: voltammetry. |
| title | Fickian diffusion constrained on spherical surfaces: voltammetry. |
| title_full | Fickian diffusion constrained on spherical surfaces: voltammetry. |
| title_fullStr | Fickian diffusion constrained on spherical surfaces: voltammetry. |
| title_full_unstemmed | Fickian diffusion constrained on spherical surfaces: voltammetry. |
| title_short | Fickian diffusion constrained on spherical surfaces: voltammetry. |
| title_sort | fickian diffusion constrained on spherical surfaces voltammetry |
| work_keys_str_mv | AT thompsonm fickiandiffusionconstrainedonsphericalsurfacesvoltammetry AT comptonr fickiandiffusionconstrainedonsphericalsurfacesvoltammetry |