Voltammetric determination of hydrogen peroxide at high concentration level using a copper electrode

Voltammetric behaviour of Cu alloys toward hydrogen peroxide and organic species

“…We could ascertain that a suitable pre-treatment of the electrode leads to more repeatable and reproducible results [23,24]. We verified that the most suitable pre-treatment consists of 25 potential sweeps from OCP to −1.00 V, 50 mVs −1 potential scan rate, in 1 M citrate buffered solution, pH 4, in presence of the maximum tested H 2 O 2 concentration, namely 200 mM [21]. As to hypochlorite ions, the electrode was pre-treated through 20 potential sweeps from +0.05 to −1.70 V starting from OCP, in 0.1 M KOH solutions, at the maximum concentration (100 mM) considered.…”

“…In the case of H 2 O 2 , voltammetric curves were recorded from OCP to −1.00 V [21]. We could ascertain that a suitable pre-treatment of the electrode leads to more repeatable and reproducible results [23,24].…”

“…All solutions were prepared using ultrapure water, 18 MΩ•cm resistivity. The solvent medium for the electrochemical investigations on H 2 O 2 reduction was 1 M citrate buffer, pH 4 [21]. In the case of the anodic oxidation of organic species, 0.1 M KOH solution has been employed, since it is one of the most common media for the development of novel electrocatalysts for sensors and fuel cells [22].…”