Silver nanoparticles embedded phosphomolybdate–polyaniline hybrid electrode for electrocatalytic reduction of H₂O₂

摘要

Hybrid silver/phosphophomolybdate/polyaniline (Ag/PMo12/PAni) was obtained through one pot synthesis, and then, it was successfully fabricated on the glassy carbon electrode by simple casting method for electrocatalytic reduction of hydrogen peroxide (H₂O₂). The cyclic voltammetric studies of the Ag/PMo12/PAni hybrid electrode suggest that the electronic properties of the phosphomolybdate are retained even after the formation of hybrid material and in addition effectively electro-catalyzing the reduction of H₂O₂ with a less negative over potential. The Ag/PMo12/PAni-modified electrode showed the lowest detection limit (750 nM) for H₂O₂ reduction among the hybrid-modified electrodes already reported with a sensitivity of 4.398 nA μM−1. The prepared hybrid material was well characterized by using UV, XRD and TEM analysis.