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Electrochemical characterization of recycled polyethylene terephthalate-polyaniline bioanode for enzymatic biofuel cell applications.

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Bibliographic Details
Title: Electrochemical characterization of recycled polyethylene terephthalate-polyaniline bioanode for enzymatic biofuel cell applications.
Authors: Khan, Maha1 (AUTHOR), Inamuddin1 (AUTHOR) inamuddin@zhcet.ac.in
Source: Electrochimica Acta. Nov2025, Vol. 539, pN.PAG-N.PAG. 1p.
Subjects: Polyethylene terephthalate, Polyanilines, Glucose oxidase, Microbial fuel cells, Electrochemical analysis, Oxidation-reduction reaction, Electrochemical electrodes, Electric conductivity
Abstract: An electrospun polyethylene terephthalate–polyaniline (PET–PANI) composite, along with vitamin K 3 (VK 3), was deposited on the conductive side of the ITO plate to construct an anode for enzymatic biofuel cell (EBFC) applications. The fibrous PET–PANI network provides a large surface-to-volume ratio, facilitating the immobilization of the glucose oxidase (GOx) enzyme onto the bioanode surface. VK 3 acts as a biocompatible redox mediator, promoting electron shuttling between the deeply rooted functional sites of GOx and the modified electrode surface. The electrical conductivity of the ITO/PET-PANI composite was measured with the help of a four-in-line probe technique of conductivity measurement for semiconductors. The components of ITO/PET-PANI/VK 3 /GOx bioanode were characterized using thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical behaviour of the modified bioelectrode was also determined using cyclic voltammetry (CV), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy (EIS). The developed ITO/PET-PANI/VK 3 /GOx bioanode generated a current output of 6.02 mA cm-2 in a 50 mM glucose solution. This result demonstrates the biocomposite's ability to provide modest enzymatic stability and enhanced electrical communication between the electrode and electrolyte interface. These characteristics suggest a promising potential for the implementation of this bioelectrode in biofuel cell technology. [Display omitted] [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:An electrospun polyethylene terephthalate–polyaniline (PET–PANI) composite, along with vitamin K 3 (VK 3), was deposited on the conductive side of the ITO plate to construct an anode for enzymatic biofuel cell (EBFC) applications. The fibrous PET–PANI network provides a large surface-to-volume ratio, facilitating the immobilization of the glucose oxidase (GOx) enzyme onto the bioanode surface. VK 3 acts as a biocompatible redox mediator, promoting electron shuttling between the deeply rooted functional sites of GOx and the modified electrode surface. The electrical conductivity of the ITO/PET-PANI composite was measured with the help of a four-in-line probe technique of conductivity measurement for semiconductors. The components of ITO/PET-PANI/VK 3 /GOx bioanode were characterized using thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical behaviour of the modified bioelectrode was also determined using cyclic voltammetry (CV), linear sweep voltammetry (LSV), and electrochemical impedance spectroscopy (EIS). The developed ITO/PET-PANI/VK 3 /GOx bioanode generated a current output of 6.02 mA cm-2 in a 50 mM glucose solution. This result demonstrates the biocomposite's ability to provide modest enzymatic stability and enhanced electrical communication between the electrode and electrolyte interface. These characteristics suggest a promising potential for the implementation of this bioelectrode in biofuel cell technology. [Display omitted] [ABSTRACT FROM AUTHOR]
ISSN:00134686
DOI:10.1016/j.electacta.2025.146934