Single Pot Synthesis of Spherical Polyaniline Stabilized AgCl Nanoparticles by Interfacial Polymerization Method and Study Its Application on Electrochemical Detection of Hydrazine and Hydrogen peroxide

摘要

Polyaniline protected silver chloride nanoparticles based nanocomposite was synthesized by aninterfacial polymerization method in which p-aminodiphenylamine was used as phase transfer agent aswell as aniline source. The solid nanocomposite (AgCl@PANI) was isolated and characterized withvarious instrumental methods such as FT-IR, SEM, EDAX and XRD techniques to understand size andshape and the nature of functional group. The electrocatalytic behavior of the AgCl@PANI modifiedGCE was investigated towards the electrochemical oxidation of hydrazine in phosphate buffer mediumand observed that a significant increases in peak current values at lower oxidation potential (+0.4 V vs.Ag wire). A calibration plot was constructed for the quantitative detection of hydrazine using DPVtechnique in the concentration ranges from 2 - 9 M. The detection limit (3) for hydrazine was found-7 to be 2.8 x 10 M. Similarly the electrocatalytic behaviour of polyaniline stabilised AgCl nanoparticleswas also investigated on electrochemical reduction of hydrogen peroxide and shows an enhancedreduction current with lowering over potential (-0.75 V vs. Ag wire). Since the AgCl@PANI modifiedGCE exhibit excellent electrocatalytic oxidation and reduction behaviour for the detection of bothhydrazine and hydrogen peroxide, we have compared these results with the literature reported values.Hence the proposed system can be utilised for the detection of both hydrazine and hydrogen peroxidein various environmental samples at trace level.