Modification of Glassy Carbon Electrode with Palladium Doped Conducting Poly(thionine) Film

Abstract

Glassy carbon electrode was modified with Pd particles using a conducting poly(thionine) as the support material. Polymerization of thionine was carried by electrochemical process from aqueous thionine acetate solution using cyclic voltammetry. K 2 PdCl 4 was used as the Pd precursor and the Pd immobilization was performed with constant potential electrolysis. The modified electrode was characterized electrochemically using cyclic voltammetry and electrochemical impedance spectroscopy methods. The results revealed that the modification process significantly increases the conductivity properties of the electrode material.

Non‐enzymatic hydrogen peroxide sensor based on palladium‐decorated poly(thionine) modified glassy carbon electrode

“…The preparation route of the sensor involved two facile steps as described before [27]: coating the electrode with the polymer film (polymerization step) immobilization of Pd nanoparticles into the polymer matrix. …”

“…The aim of the current study is to develop a simple, cost‐effective, and fast amperometric sensor for the detection of H 2 O 2 . For this purpose, we used a modified electrode system, which has been prepared by immobilizing Pd and poly(thionine) (PTH) on a glassy carbon electrode (GCE) using a procedure reported before [27]. The purpose of the developed Pd/PTH@GCE system is to perform highly sensitive and selective H 2 O 2 analyses by means of immobilized metal nanoparticles without the need for enzymes.…”