Development of metal oxide-modified carbon paste based sensor for honey analysis using electronic tongue

Abstract

In this work, a novel application of nanotechnology in fabricating metal oxide sensor for use in an electronic tongue is presented. Synthesis of zirconium oxide nanoparticles (ZrO2NPs) is done using zirconium oxychloride by combustion method. The sensor is fabricated using ZrO2NPs with carbon paste (CPs) and paraffin oil as a binder in a defined ratio. The developed sensor is used to characterise honey of various floral types using cyclic voltammetric (CV) technique. The result demonstrates that ZrO2NP enhances the electrocatalytic activity toward the redox reactions for each honey samples. The developed sensor successfully applied for discrimination of five floral types of Indian honey.