Square wave anodic stripping voltammetry at mercury-plated electrode. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdroplets
Mercury electroplated onto solid electrodes is widely used for electrochemical measurements. Depending on the substrate, the coating can take the form of either a uniform thin film or an assembly of microdroplets. It is interesting to ask the extent to which the morphological state can influence the...
| Main Authors: | , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2000
|
| _version_ | 1826300860207988736 |
|---|---|
| author | Powell, M Ball, J Tsai, Y Suarez, M Compton, R |
| author_facet | Powell, M Ball, J Tsai, Y Suarez, M Compton, R |
| author_sort | Powell, M |
| collection | OXFORD |
| description | Mercury electroplated onto solid electrodes is widely used for electrochemical measurements. Depending on the substrate, the coating can take the form of either a uniform thin film or an assembly of microdroplets. It is interesting to ask the extent to which the morphological state can influence the nature of voltammetric responses from such electrodes. Accordingly, a general approach is developed for the numerical simulation of square wave anodic stripping voltammetry at hemispherical and uniform planar electrodes based on the backward implicit method. This is applied to the modeling of electrochemically reversible, irreversible,.and quasi-reversible redox couples. Data from the simulations are validated by comparison of characteristic properties of the voltammograms with published work for the reversible limit of the planar electrode. The variation of these characteristic features with electrode geometry and electrode kinetics is studied, and a comparison between the planar and hemispherical geometry made. Last, experimental data is presented for the nature of mercury on the surface of both iridium and copper substrates, obtained by atomic force microscopy. © 2000 American Chemical Society. |
| first_indexed | 2024-03-07T05:23:33Z |
| format | Journal article |
| id | oxford-uuid:dfc3087c-8465-4beb-a3f5-76b4b4963681 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:23:33Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:dfc3087c-8465-4beb-a3f5-76b4b49636812022-03-27T09:41:45ZSquare wave anodic stripping voltammetry at mercury-plated electrode. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdropletsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:dfc3087c-8465-4beb-a3f5-76b4b4963681EnglishSymplectic Elements at Oxford2000Powell, MBall, JTsai, YSuarez, MCompton, RMercury electroplated onto solid electrodes is widely used for electrochemical measurements. Depending on the substrate, the coating can take the form of either a uniform thin film or an assembly of microdroplets. It is interesting to ask the extent to which the morphological state can influence the nature of voltammetric responses from such electrodes. Accordingly, a general approach is developed for the numerical simulation of square wave anodic stripping voltammetry at hemispherical and uniform planar electrodes based on the backward implicit method. This is applied to the modeling of electrochemically reversible, irreversible,.and quasi-reversible redox couples. Data from the simulations are validated by comparison of characteristic properties of the voltammograms with published work for the reversible limit of the planar electrode. The variation of these characteristic features with electrode geometry and electrode kinetics is studied, and a comparison between the planar and hemispherical geometry made. Last, experimental data is presented for the nature of mercury on the surface of both iridium and copper substrates, obtained by atomic force microscopy. © 2000 American Chemical Society. |
| spellingShingle | Powell, M Ball, J Tsai, Y Suarez, M Compton, R Square wave anodic stripping voltammetry at mercury-plated electrode. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdroplets |
| title | Square wave anodic stripping voltammetry at mercury-plated electrode. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdroplets |
| title_full | Square wave anodic stripping voltammetry at mercury-plated electrode. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdroplets |
| title_fullStr | Square wave anodic stripping voltammetry at mercury-plated electrode. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdroplets |
| title_full_unstemmed | Square wave anodic stripping voltammetry at mercury-plated electrode. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdroplets |
| title_short | Square wave anodic stripping voltammetry at mercury-plated electrode. Simulation of surface morphology effects on electrochemically reversible, irreversible, and quasi-reversible processes: Comparison of thin films and microdroplets |
| title_sort | square wave anodic stripping voltammetry at mercury plated electrode simulation of surface morphology effects on electrochemically reversible irreversible and quasi reversible processes comparison of thin films and microdroplets |
| work_keys_str_mv | AT powellm squarewaveanodicstrippingvoltammetryatmercuryplatedelectrodesimulationofsurfacemorphologyeffectsonelectrochemicallyreversibleirreversibleandquasireversibleprocessescomparisonofthinfilmsandmicrodroplets AT ballj squarewaveanodicstrippingvoltammetryatmercuryplatedelectrodesimulationofsurfacemorphologyeffectsonelectrochemicallyreversibleirreversibleandquasireversibleprocessescomparisonofthinfilmsandmicrodroplets AT tsaiy squarewaveanodicstrippingvoltammetryatmercuryplatedelectrodesimulationofsurfacemorphologyeffectsonelectrochemicallyreversibleirreversibleandquasireversibleprocessescomparisonofthinfilmsandmicrodroplets AT suarezm squarewaveanodicstrippingvoltammetryatmercuryplatedelectrodesimulationofsurfacemorphologyeffectsonelectrochemicallyreversibleirreversibleandquasireversibleprocessescomparisonofthinfilmsandmicrodroplets AT comptonr squarewaveanodicstrippingvoltammetryatmercuryplatedelectrodesimulationofsurfacemorphologyeffectsonelectrochemicallyreversibleirreversibleandquasireversibleprocessescomparisonofthinfilmsandmicrodroplets |