Antimony Tin Oxide—Prussian Blue Screen-Printed Electrodes for Electrochemical Sensing of Potassium Ions

In this work, the characterization and electro-analytical applications of antimony tin oxide (ATO)–Prussian blue (PB) screen printed electrodes (SPE) are presented. The ATO conducting particles have been used recently in development screen-printed due to their excellent spectroelectrochemical properties. PB is a transition metal hexacyanoferrate with high electrocatalytic properties towards various biologically active compounds like hydrogen peroxide, besides its outstanding electrochromic A combination ingredients into screen-printing paste provided versatile cost-effective way novel electrode materials for electrochemical sensing. ATO-PB material displayed good demonstrated by means cyclic voltammetry impedance measurements. addition, selectivity potassium ions solution zeolitic structures redox behavior. voltammetric responses recorded at ATO-PB-SPE device presence revealed linear dependence cathodic peak current potential Prussian blue/Everitt’s salt system on concentrations ranging from 0.1 10 mM. This finding could be exploited an sensor electro-inactive chemical species. application sensing electro-active species caffeic acid was also studied. An increase anodic PB/ES wave observed. These results point out analytical both