Abstract
Polyaniline-silver (PANI-Ag)/ferritin (Frt)/glucose oxidase (GOx) biocompatible anode was utilized for creating power from glucose. The synthesized nanocomposite was investigated by EIS (Electrochemical impedance spectroscopy), XRD (X-ray diffraction), FTIR (Fourier transform infrared spectroscopy), SEM (Scanning electron microscopy), CV (Cyclic voltammetry), and LSV (Linear sweep voltammetry) to know the morphology, crystallinity and electrochemical behaviour of the nanocomposite. The electroactive support (PANI-Ag) was utilized for the immobilization of the enzyme (GOx) and a biocompatible mediator (Frt) to enhance the electrical signals. The electrochemical estimations of the manufactured bioanode were done by utilizing cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The current density obtained by the PANI-Ag/Frt/GOx bioanode was observed to be 25.40 ± 2 mA cm−2 at 40 mM of glucose concentration at a scan rate of 100 mVs−1.
Highlights
Laccase[18,19], horseradish peroxidase[20,21] and microperoxidase[22] are used at the cathode
A considerable development was ascertained in the electrical conductivities of PANI-Ag nanocomposite compared to those of pure PANI (Emeraldine Base), which increased from 10−9 S cm−1 to as high as 103 S cm−1 39–41
It was found that following 10 days storage at 4 °C the modified bioelectrode can hold around 88% of its original current density. In this examination work conducting polyaniline/silver (PANI-Ag) nanocomposite was synthesized in the presence of silver nitrate precursor
Summary
Sufia ul Haque[1], Inamuddin[2,3], Abu Nasar[1], B. Polyaniline-silver (PANI-Ag)/ferritin (Frt)/glucose oxidase (GOx) biocompatible anode was utilized for creating power from glucose. The electroactive support (PANI-Ag) was utilized for the immobilization of the enzyme (GOx) and a biocompatible mediator (Frt) to enhance the electrical signals. Enzymatic biofuel cell (EFC) utilizes enzyme to catalyze the electron flow from substrate like glucose rather than precious metal, in short, they run on sugar[4]. Polyaniline-Silver (PANI-Ag) is utilized as a conductive material for providing a better communication between redox active site of the enzyme and the surface of electrode[31]. A 6 μL of GOx was adsorbed on the dried PANI-Ag/ Frt modified biocomposite anode and left to dry at room temperature for 60 min. The anode was ultrasonicated with advanced ultrasonic cleaner (LMUC arrangement Labman, India)
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