Anju Joshi
Indian Institute of Technology, India
Title: Non-enzyamtic electrochemical sensing of hydrogen peroxide using (TBA)3[PMo12O40]-OCNTs composites
Biography
Biography: Anju Joshi
Abstract
Nanocomposites based on (TBA)3[PMo12O40]@oxidized carbon nanotubes (O-CNTs) has been prepared to demonstrate its application for hydrogen peroxide sensing. To achieve the desired goal, a keggin type tetra-butylammonium phosphomolybdate has been engrafted onto oxidized carbon nanotubes utilizing electrostatic interactions between oxidized carbon nanotubes and (TBA)3[PMo12O40]. The synthesis procedure is convenient, rapid and scalable (TBA)3 [PMo12O40]- O-CNTs modified GCE showed good stability and well resolved intense redox peaks corresponding to the PMo12 system. Furthermore, cyclic voltammetric, chronoamperometry and rotating disc electrode studies has been performed to evaluate the superior electrocatalytic activity of the (TBA)3[PMo12O40]@O-CNTs modified GCE towards electrocatalytic reduction of hydrogen peroxide. (TBA)3[PMo12O40]@O-CNTs exhibits superior sensitivity, selectivity and fast response with a wide linear range of 1µM-1000 µM.