Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7705272 | International Journal of Hydrogen Energy | 2018 | 11 Pages |
Abstract
This study reports the synthesis of a nanocomposite comprised of graphene (G) supported manganese dioxide (MnO2) incorporated into the network of polythioaniline (MnO2-G/PTA). The hybrid composite was applied as an electrode material for the development of a bioanode. The bioanode was fabricated by the electrochemical entrapment of ferritin (Frt) as mediator and glucose oxidase (GOx) enzyme in the matrix of the as-synthesized MnO2-G/PTA deposited on glassy carbon electrode (GCE) surface. The structural features and electrochemical behaviour of the modified electrodes were investigated by Fourier transform infrared spectroscopy (FTIR), cyclic voltammetry (CV), linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS). The results unfolded that the hybrid electroactive support (MnO2-G/PTA) employed for the immobilization of the enzyme (GOx) established an appropriate electrical cabling between the redox enzyme (GOx) and the electrode surface with the assistance provided by the biocompatible mediator (Frt) working to enhance the electrical signals. The developed GCE/MnO2-G/PTA/Frt/GOx bioanode attained a maximum current density of 3.68Â mAcmâ2 at 35Â mM glucose concentration at a scan rate of 100Â mVsâ1. Thus, the MnO2-G/PTA/Frt/GOx modified electrode possesses high potential and good biocompatibility for bio-electricity production from glucose.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Ruma Perveen, Abu Nasar, Inamuddin Inamuddin, Abdullah M. Asiri, A.K. Mishra,