Polymer - Sn Composite : Development of Amperometric Hydrazine Sensor

Abstract

In the present work, an ease and green chemical protocol for the formation of polyaniline - Sn composite is proposed. The protocol involves the formation of composite by the simple mixing of tin nitrate and aniline at room temperature without using any agents for polymerisation process. The composite obtained has been well characterized with the aid of SEM with EDAX and XRD. Further, it has been used in the development of thin film electrodes on the surface of rigid glassy carbon electrode and subsequently employed as an electrochemical interface for the electroanalytical amperometric sensing of hydrazine model analyte system at trace concentration level. The developed interface showed good affinity towards the analyte in the dynamic range upto 400 µM with a detection limit of 0.1 µM (3ϭ). The stability, reproducibility has been proven to be good without any deviation in its electrochemical performance with least interference from commonly encountered foreign species. Finally, the practical utility of the developed sensor has been shown by determining the trace concentration levels of hydrazine from tap water.