FLORENTINA HUTANU, MIHAELA BADEA DONI, CORNEL MUNTEANU, SIMONA PETRESCU, MARIA MARCU IMPROVED STABILITY AND CATALYTIC ACTIVITY OF SCREEN PRINTED ELECTRODE MODIFIED WITH PB IN THE PRESENCE OF ANIONIC SURFACTANT
In this article is reported the effect of anionic surfactants AOT (dioctyl sulfosuccinate) in the electrodeposition of Prussian Blue (PB) onto screen-printed carbon electrodes (SPCE). The SPCE/PB/AOT electrode displayed a significant improvement of its electrochemical properties and of its stability compared with PB modified SPCE formed in absence of surfactant. The effects of AOT concentration and applied potential on the sensor response to H2O2 are discussed. The PB film stabilized with AOT, were characterized by Scanning electron microscopy (SEM), and Raman spectroscopy. The new electrodeposed PB/AOT film proved excellent electroanalytic properties for H2O2 determination and is a promising material for assembling biosensors based on oxidoreductase enzymes.