Research Information System
12th Aegean Analytical Chemistry Days, İstanbul, Turkey, 19 - 22 October 2023, pp.267
Enzymatic biofuel cells (EBFCs) are very popular devices that can convert the chemical energy stored in the fuel directly into electricity using enzymes as biocatalysts [1]. In this process, the fuel is oxidized at the anode via enzymatic reactions and usually oxygen is reduced at the cathode. EBFCs are promising sources of green energy owing to the benefits of using renewable biofuels, eco-friendly biocatalysts, and moderate operating conditions [2]. In this study, we presented an EBFC that contains the composite anode and metal nanoparticle-based cathode. The anode was modified with multi-walled carbon nanotube (MWCNT) and ferrocene (Fc) as a conductive layer coupled with the enzyme glucose oxidase (GOx) as a sensitive detection layer for glucose. A chitosan layer was also applied on top of the electrode as a protective layer to complete the composite anode preparation. On the other hand, the cathode consisted of platinum and palladium metal nanoparticles (MNps), and their composites for oxygen reduction reaction because of their good conductivity and electron transfer rate. The system parameters were optimized, and the best results were obtained with the composite anode containing MWCNT (2.0 mg/mL), Fc (25 mM), GOx (20 mg/mL) modified glassy carbon electrode, and the cathode containing Pt-Pd (5.0 mM) nanoparticles modified pencil graphite electrode. The EBFC performance was investigated with potentiostat/galvanostat and EBFCs yield an open circuit voltage of 0.28 V and a maximum power density of 30.25 μW cm−2. The results show that the proposed EBFC is a promising candidate for the detection of glucose while harvesting power in various samples containing glucose