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We have developed novel nanostructured PANI/ZnO and PANI/MnO2 electropolymerized stainless steel electrodes as highly sensitive biosensors. At first, nanostructured ZnO and MnO2 have been synthesized chemically and polyaniline nanocomposites with different weight percentage (5, 10 and 15%) were electrochemically deposited onto the stainless steel electrode. These modified electrode surfaces were used for immobilizing the Urease by physical absorption method. Then, nanostructural characterization of the sensor's surface were performed using SEM, FTIR and XRD techniques to understand the surface morphologies of the sensitive materials to better evaluate film suitability for biosensing. Also the characterization such as Cyclic Voltametry, Chronoamperometry and EIS were performed in order to evaluate the electrochemical performance of the constructed biosensors.In third stage, the developed sensors were tested towards detection of Hg (II) and Pb (II) heavy metal ions.
Über den Autor / die Autorin
Proactive lecturer and researcher with 13+ years of experience of teaching to both UG & PG level. He has secured First merit position in M. Sc. (Physics) examination and so honored by Gold Medal. One International Patent awarded (Utility Model No.20 2022 104 467) by Federal Republic of Germany in 2022. He has published 5 books & 20 research papers.
