Modification of carbon paste electrode with synthesized nano Fe–ZSM-5 type zeolite for electrooxidation of formaldehyde in acidic solution

The aim of this research is the application of nano ZSM-5 zeolite for preparation of modified carbone paste electrode for electrocatalytic oxidation of formaldehyde. The electrochemical behavior of modified carbon paste electrodes in the forms of Fe/FeZSM-5CPE and unmodified carbon paste electrode were studied using cyclic voltammetric and chronoamprometric techneques. The obtained results show that the modified carbon paste electrode (Fe/FeZSM-5CPE) is the suitable electrode for electrooxidation of formaldehyde in the acidic solution. The transfer coefficient and current density for formaldehyde were calculated 0.23 and 19.8 mA/cm2 respectively. The rate constant for catalytic reaction was calculated as 3.6×103 cm3 .s-1. mol-1 via Cottrell equation

کلیدواژه ها:

electrocatalyst ، formaldehyde ، nano zeolite ، modified electrodes ، fuel cell