کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
219278 463258 2012 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cyclic voltammetry in the absence of excess supporting electrolyte: The effect of analyte charge
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Cyclic voltammetry in the absence of excess supporting electrolyte: The effect of analyte charge
چکیده انگلیسی

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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 683, 1 September 2012, Pages 1–13
نویسندگان
, ,