Voltammetric behavior of perborate on prussian‐blue‐modified carbon paste electrodes

Abstract

The voltammetric behavior of the catalytic reduction of perborate at carbon paste electrodes modified with Prussian blue is compared with that of hydrogen peroxide. Good linearity is observed between the voltammetric current and the concentration from 1 to 100 ppm H202 as perborate. The influence of the paste composition and other variables is studied. 1040-0397/90/$3 50 + 25 \ 200.c,

Sensor for Hydrogen Peroxide Based on Prussian Blue Modified Electrode: Improvement of the Operational Stability

“…Moreover, it is possible to note a slight decrease of the electroactivity of the film after a longer storage condition (48 h, in air with exclusion of light at ambient temperature). This confirms earlier work 7 in which was observed a significant decrease of electroactivity of the PBmodified electrode storage time in a desiccator even under light protection. The decomposition of the modifier resulting in a decrease of electroactive molecules on the surface was found to be the main reason.…”

“…This observation confirms the initial belief that the film is permeable to water molecules. [5][6][7] Then for further experiments, the PB film was treated under 100˚C for 1 h before the activation in phosphate buffer solution (R3 reagent). The pH value was shown to be a very important parameter for the stability of the PB films.…”

Electrocatalytic Reduction of Peroxy Disulfate on the Palladized Aluminum Electrode Modified by Prussian Blue: Application to the Analysis of Decolorizing Powders

“…It was found that PB films have been deposited on glassy carbon [9][10][11][15][16][17][18][19], graphite [10,12,13,19], platinum [20,21] and carbon fiber [8] and also incorporated into polypyrrole [22,23] and carbon paste [24][25][26]. Recently, we have reported the nonelectrolysis preparation path of the PB films on naked Al surface as well as on an Al surface covered by metallic palladium particles, describing that the PB film on the naked Al surface is electroinactive, but it is electroactive on the Al surface covered by metallic Pd layer which acts as a conducting body, insuring electron transfer between the Al and the Prussian Blue [27].…”

A new amperometric glucose biosensor based on screen printed carbon electrodes with rhenium(IV) - oxide as a mediator

“…In many cases transition metal compounds are used which may change easily their oxidation states such as hexacyanoferrates [8][9][10][11][12][13][14][15][16][17], platinum metals or their oxides [18], and manganese dioxide [6][7][8][9][19][20][21].…”