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

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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]
Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Electrochemical characterization of recycled polyethylene terephthalate-polyaniline bioanode for enzymatic biofuel cell applications.
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  Data: <searchLink fieldCode="AR" term="%22Khan%2C+Maha%22">Khan, Maha</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Inamuddin%22">Inamuddin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> inamuddin@zhcet.ac.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Electrochimica+Acta%22">Electrochimica Acta</searchLink>. Nov2025, Vol. 539, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Polyethylene+terephthalate%22">Polyethylene terephthalate</searchLink><br /><searchLink fieldCode="DE" term="%22Polyanilines%22">Polyanilines</searchLink><br /><searchLink fieldCode="DE" term="%22Glucose+oxidase%22">Glucose oxidase</searchLink><br /><searchLink fieldCode="DE" term="%22Microbial+fuel+cells%22">Microbial fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+analysis%22">Electrochemical analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Oxidation-reduction+reaction%22">Oxidation-reduction reaction</searchLink><br /><searchLink fieldCode="DE" term="%22Electrochemical+electrodes%22">Electrochemical electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: 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]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.electacta.2025.146934
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Polyethylene terephthalate
        Type: general
      – SubjectFull: Polyanilines
        Type: general
      – SubjectFull: Glucose oxidase
        Type: general
      – SubjectFull: Microbial fuel cells
        Type: general
      – SubjectFull: Electrochemical analysis
        Type: general
      – SubjectFull: Oxidation-reduction reaction
        Type: general
      – SubjectFull: Electrochemical electrodes
        Type: general
      – SubjectFull: Electric conductivity
        Type: general
    Titles:
      – TitleFull: Electrochemical characterization of recycled polyethylene terephthalate-polyaniline bioanode for enzymatic biofuel cell applications.
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          Name:
            NameFull: Khan, Maha
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            NameFull: Inamuddin
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            – D: 01
              M: 11
              Text: Nov2025
              Type: published
              Y: 2025
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              Value: 539
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