Nickel-Zeolite modified carbon paste electrode as electrochemical sensor for hydrogen peroxide
| Autor: | Ali Malekan, Banafsheh Norouzi, Majid Moradian |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Working electrode
Standard hydrogen electrode Inorganic chemistry 02 engineering and technology Chronoamperometry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electrochemical gas sensor chemistry.chemical_compound chemistry Palladium-hydrogen electrode Electrochemistry Reversible hydrogen electrode Cyclic voltammetry 0210 nano-technology Hydrogen peroxide |
| Zdroj: | Russian Journal of Electrochemistry. 52:330-339 |
| ISSN: | 1608-3342 1023-1935 |
| DOI: | 10.1134/s1023193516040108 |
| Popis: | In the present work, nickel-zeolite modified carbon paste electrode (Ni-ZMCPE) was prepared. The electrochemical behaviour of hydrogen peroxide at the surface of modified electrode was investigated by cyclic voltammetry and chronoamperometry in 0.1 M NaOH supporting electrolyte. The electrochemical characterization of Ni-ZMCPE exhibits redox behavior of Ni(III)/Ni(II) couple in alkaline medium. It has been shown that Ni-ZMCPE improves efficiency of the modified electrode toward hydrogen peroxide electrooxidation (It wasn’t remarkable different on ZMCPE and CPE in the presence and absence of hydrogen peroxide). Moreover, the effects of various parameters such as effect of different percents of Ni-Z to graphite, effect of pH and hydrogen peroxide concentration on the electrooxidation of hydrogen peroxide as well as stability of the Ni-ZMCPE have also been investigated. Under the selected conditions, the anodic peak current was linearly dependent on the concentration of hydrogen peroxide in the range 0.03–0.1 and 0.3–6 mM with amperometric method. The detection limit (S/N = 3) was also estimated to be 1 μM. |
| Databáze: | OpenAIRE |
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