A novel poly(propylene-co-imidazole) based biofuel cell: System optimization and operation for energy generation

Env Prog and Sustain Energy

2015

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Poly(3‐thiopheneacetic acid‐co‐3‐methylthiophene) conductive polymer was electrosynthesized with ferrocene and used for an enzymatic fuel cell including glucose oxidase and bilirubin oxidase enzymes. The system was operated in a single‐compartment and membrane‐less cell by using glucose as fuel. Detailed optimization ensured to achieve considerable power output to generate sustainable energy from municipal wastewater as a renewable fuel source. Maximum power density of 1 μW/cm2 was generated at a cell voltage of +0.56 V in 100 mM, pH 7.4 phosphate buffer with the addition of 10 mM synthetic glucose. The working electrodes could harvest glucose readily found in the municipal wastewater of Zonguldak City in Turkey by generating a power density of 4 μW/cm2 for the municipal wastewater sample. In this way, the organic pollutants in wastewater could be evaluated by converting them into the electrical energy using an enzymatic fuel cell for the first time. © 2015 American Institute of Chemical Engineers Environ Prog, 35: 859–866, 2016

Section: Selection Of Electrode Materialssupporting

confidence: 93%

Power improvement of enzymatic fuel cells used for sustainable energy generation

Korkut

Env Prog and Sustain Energy

2015

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“…Gold nanoparticle-embedded poly(propylene-co-imidazole) was synthesized according to a procedure in our previous report as follows: [24] 0.25 g of imidazole and 1.43 g of chlorinated polypropylene were separately dissolved in 30 mL of purified tetrahydrafurane. 0.20 g of NaH in oil (60 wt%) was added to the imidazole solution.…”

Section: Synthesis Of Gold Nanoparticle-embedded Poly(propylene-co-immentioning

confidence: 99%

“…[24] The propylene/imidazole based copolymer was shown to be synthesized by trapping the gold nanoparticles in the copolymer pores. Cyclic voltammetry was conducted to evaluate the electrochemical characteristic of the horseradish peroxidase immobilized copolymer film coated electrode surface in continuous flow mode at a flow rate of 1 mL/ min.…”

Section: Copolymer Characterizationmentioning

confidence: 99%

“…We previously reported that the poly(propylene-co-imidazole) film electrodes without nanoparticles did not show an applicable cyclic voltammogram since no passage of current was observed on the electrode surface. [24] Amperometric response Horseradish peroxidase contains heme as prosthetic group and is commonly used for the determination of phenolics. In the catalytic cycle of horseradish peroxidase reactions, the native enzyme reacts with hydrogen peroxide to activate the intermediate enzymatic form.…”

Section: Copolymer Characterizationmentioning

confidence: 99%

“…[23] In our previous study, we reported a compartment-less enzymatic fuel cell constructed by using poly(propylene-co-imidazole) as the supporting layer which showed excellent adsorption and provided rapid electron transfer, yielding efficient energy production from municipal wastewater. [24] Integration of the enzyme electrode in a continuous flow cell is preferred to determine phenols in environmental samples to reduce interferences [25] and electrode surface fouling by the enzymatic reaction products. The flow cell electrode surface contacts the substrate for a short time only.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrochemical, continuous-flow determination ofp-benzoquinone on a gold nanoparticles poly(propylene-co-imidazole) modified gold electrode

Korkut

Uzunçar

Instrumentation Science & Technology

et al. 2016

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A novel continuous flow biosensor based on gold nanoparticles and poly(propylene-co-imidazole) was developed for the online determination of p-benzoquinone. The amperometric response was measured as a function of p-benzoquinone concentration at an applied potential of À 50 mV. The hydrogen peroxide concentration was optimized and fixed at 1 mM in samples. The mass transfer resistance of the copolymer film was minimized, and the flow cell was regenerated quickly at 1 mL/min. The resulting device provided good analytical performance based on a linear dynamic range from 5-100 µM, a short response time of 3 s, a detection limit of 3.3 µM, excellent repeatability with a relative standard deviation of 0.82%, long-term stability of 95% after four weeks, and an accuracy of 105%. The gold nanoparticles enhanced the electron transfer rate on the electrode. The apparent Michaelis-Menten constant was 4 mM, showing that the enzyme retained catalytic specificity and provided high activity for p-benzoquinone.

Square wave voltammetric detection of cholesterol with biosensor based on poly(styrene‐‐ε‐caprolactone)/MWCNTs composite

Kavacık

Biotech and App Biochem

2023

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A novel poly(styrene‐‐ε‐caprolactone)/multiwalled carbon nanotubes/cholesterol oxidase film‐coated glassy carbon electrode was designed for cholesterol detection by square wave voltammetry (SWV). The biosensor responded to cholesterol with a measurement concentration range between 1 and 130 μM, a relative standard deviation of only 0.095% and accuracy of 100.42% ±2.85 with the SWV technique in the potential range from −0.6 to +0.6 V. The limit of detection was calculated to be 0.63 μM. The biosensor was preserved 91 and 84% of its initial response at the end of the 9st and 25st days, respectively. Human serum from human male AB plasma was analyzed without pretreatment except for dilution to investigate the performance of the biosensor in a complex medium.