کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
219278 | 463258 | 2012 | 13 صفحه PDF | دانلود رایگان |
The cyclic voltammetry of the simple electrochemically reversible reduction, AZA+ne-⇌BZBAZA+ne-⇌BZB, is modelled using numerical simulations. The effect of adding different concentrations of supporting electrolyte is studied as a function of the scan rate, the diffusion coefficients of species A and B and the diffusion coefficients of the ions in the supporting electrolyte. These studies cover the following ZA/ZBZA/ZB redox couples: 2/1, −1/−2, 8/7, and −7/−8. The supporting information contains a table listing the minimum concentration of supporting electrolyte required to achieve fully supported voltammetry pertaining to a range of scan rates (10-1⩽Fνre2DART⩽105); a wide range of charges of the electroactive species (-7⩽ZA⩽8-7⩽ZA⩽8) and includes both one and two electron transfer. This allows experimental conditions to be defined so that any particular Nernstian electrochemical system may be studied under diffusion-only conditions without the need for additional experiments and/or simulations.
► Cyclic voltammetry of the E reduction studied using simulations.
► Minimum support ratio required for diffusional CV varies with several parameters.
► Supporting info contains required support ratios for several A/B couples.
Journal: Journal of Electroanalytical Chemistry - Volume 683, 1 September 2012, Pages 1–13