Synthesis,characterization of calcium ferrite nanoparticles and their modified carbon paste electrode for the electrochemical investigation of dopamine in presence of uric acid and folic acid

Calcium ferrite nanoparticles (cafe2o4) were prepared by a solution based method using calcium chloride (cacl2),ferrous sulphate (feso4),dl serine and sodium hydroxide (naoh) as a precipitant and the obtained precipitation was calcinated under 500 ºc for 4 h. the resulting material was characterized by using x-ray diffractometry (xrd),energy dispersive spectroscopy (eds) and scanning electron microscopy (sem). the cafe2o4 nps were used for the preparation of cafe2o4 nps/carbon paste electrode (cafe2o4 nps/cpe) and applied for the electrochemical investigation of dopamine (da),uric acid (ua) and folic acid (fa) which exhibits good electrocatalytic activity for investigation of da,ua and fa at physiological ph 7.4. the electrocatalytic currents increased linearly with an increase in da,ua and fa concentration and the scan rate effect was studied. the modified electrode shows,overall electrode process is adsorption and diffusion controlled. © 2015 the authors.