Electrocatalytic Performance of Chemically Synthesized PIn-Au-SGO Composite toward Mediated Biofuel Cell Anode

Abstract

The proposed work intended to make an intellectual contribution to the domain of green nanotechnology which emphasizes the chemical synthesis of a conducting nanocomposite based on the incorporation of gold nanoparticles (Au) into the redox matrix of polyindole (PIn) along with the subsequent improvement in the overall properties of the composite by the addition of sulfonated graphene oxide (SGO). The bioanode was developed by the deposition of the PIn-Au-SGO nanocomposite with subsequent immobilization of ferritin (Frt) and glucose oxidase (GOx) on the glassy carbon electrode (GC). The successful application of the PIn-Au-SGO nanocomposite toward the development of a ferritin-mediated glucose biofuel cell anode was studied by the electrochemical characterization of the constructed bioanode (GC-PIn-Au-SGO/Frt/GOx) for the bioelectrocatalytic oxidation of glucose. The maximum current density obtained by the modified bioanode was found to be 17.8 mA cm−2 at the limiting glucose concentration of 50 mM in 0.1 M K4Fe(CN)6 at a scan rate of 100 mVs−1. The lifetime of the concerned bioelectrode when stored at 4 °C was estimated to be 53 days approximately. The appreciable results of the structural and electrochemical characterization of the PIn-Au-SGO based bioelectrode reveal its potential applications exclusively in implantable medical devices.

Reduced graphene oxide/polypyrrole/nitrate reductase deposited glassy carbon electrode (GCE/RGO/PPy/NR): biosensor for the detection of nitrate in wastewater

“…The dependency of redox peak current on scan rate suggests that the nitrate reduction by the GCE/RGO/PPy/NR-modified bio-electrode is dominated by a surface-controlled phenomenon. Hence, it can be inferred from the results that scan rate has a significant effect on the electrochemical process which includes a mixture of adsorption-and diffusion-controlled processes (Inamuddin et al 2016;Haque et al 2017a, b;Perveen et al 2017Perveen et al , 2018aBeenish et al 2018).…”

Green synthesis of ZnO nanoparticles decorated on polyindole functionalized-MCNTs and used as anode material for enzymatic biofuel cell applications

“…Including this PIn has both benzene and pyrrole rings that reflect the properties of two, for instance high storage ability, good thermal stability, along with slow degradation rate as compared to the Ppy and PANI 39 . These dynamic properties of PIn have been reported in mediated based biofuel cell due to its good electrocatalytic activity 40 .…”

“…For instance polyaniline-grafted CNTs as electrode materials for supercapacitors 35 , polypyrrole coated CNTs as a gas sensor 36 , and CNT/PEDOT transparent conductive films as solar cell 37 etc. It is to be well noted that including various polymer, to date polyindole (PIn) has received immense attention due to its good electrical properties, environmental stability, and ease of synthesis 38 . Including this PIn has both benzene and pyrrole rings that reflect the properties of two, for instance high storage ability, good thermal stability, along with slow degradation rate as compared to the Ppy and PANI 39 .…”

Application of Electrically Conducting Nanocomposite Material Polythiophene@NiO/Frt/GOx as Anode for Enzymatic Biofuel Cells

“…[3][4][5]. The advantages of EBFCs over the conventional fuel cells are less expensive, eco-friendly, and their favorable operational conditions, such as an ambient temperature and pressure [6][7][8][9][10], which make the EBFCs suitable for the small-scale power generation devices for in-vivo applications, like in miniaturized sensors, artificial organs, and implantable biomedical devices (e.g., cardiac pacemakers, insulin pumps) [11]. Glucose-based EBFC seems to be a promising candidate for implantable applications, due to the availability of glucose and oxygen in physiological fluids that make the possibility for the generation of electrical power inside the living system.…”