Evaluation of electrocatalysis behavior of Fe₃O₄ magnetic nanoparticles on oxidation of Bisphenol A as the first step for its detection

Abstract

A paste electrochemical sensor, based on a Fe₃O₄ modified carbon paste electrode, has been developed for investigation of Bisphenol A (BPA) oxidation in phosphate buffer Solution (PBS) pH 7. In this study, it figures out that Fe₃O₄ reveals the best electrocatalysis on oxidation of Bisphenol A at ratio of c powder/Fe₃O₄/para(ine oil = 76/4/20. With this composition, thc BPA oxidation current recorded is 1.70 times higher than that with no Fe₃O₄ in CPE. It is applicable to develop an electrochemical sensor with proper amount of Fe₃O₄ in the paste in order to enhancement the signals of BPA during its analysis.