Fast Fourier transformation electrochemical impedance spectroscopy for the investigation of inactivation of glucose biosensor based on graphite electrode modified by Prussian blue, polypyrrole and glucose oxidase

Valiūnienė, Aušra; Rekertaitė, Asta Inesė; Ramanavičienė, Almira; Mikoliūnaitė, Lina

doi:10.1016/j.colsurfa.2017.05.048

Cited by 51 publications

(18 citation statements)

References 34 publications

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“…Various technologies have been used for glucose sensing. Among them are infrared spectroscopy [ 5 ], fluorescence spectroscopy [ 6 ], Raman spectroscopy [ 7 ], liquid chromatography [ 8 ], polarimetry [ 9 ], and impedance spectroscopy [ 10 ]. However, expensive equipment requirements and complicated operations have become some of the obstacles to accessible glucose monitoring.…”

Section: Introductionmentioning

confidence: 99%

Glucose Sensing Using Capacitive Biosensor Based on Polyvinylidene Fluoride Thin Film

2018

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A polyvinylidene fluoride (PVDF) film-based capacitive biosensor was developed for glucose sensing. This device consists of a PVDF film sandwiched between two electrodes. A capacitive biosensor measures the dielectric properties of the dielectric layers at the interface between the electrolyte and the electrode. A glucose oxidase (GOx) enzyme was immobilized onto the electrode to oxidize glucose. In practice, the biochemical reaction of glucose with the GOx enzyme generates free electron carriers. Consequently, the potential difference between the electrodes is increased, resulting in a measurable voltage output of the biosensor. The device was tested for various glucose concentrations in the range of 0.013 to 5.85 M, and various GOx enzyme concentrations between 4882.8 and 2.5 million units/L. We found that the sensor output increased with increasing glucose concentration up to 5.85 M. These results indicate that the PVDF film-based capacitive biosensors can be properly applied to glucose sensing and provide opportunities for the low-cost fabrication of glucose-based biosensors based on PVDF materials.

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Section: Introductionmentioning

confidence: 99%

Glucose Sensing Using Capacitive Biosensor Based on Polyvinylidene Fluoride Thin Film

2018

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“…It was implied that PPy/EG10 had high capacitance combining double-layer capacitance and pseudo-capacitance. 73,74 The EIS results demonstrated that PPy/EG10 was one of the best electrode materials for supercapacitors due to the synergistic effect of the unique 3D structure, good electrical conductivity and high usage pseudo-capacitance of PPy. The CV curves of the EG, PPy and PPy/EG electrodes at 10 mV s À1 are shown in Fig.…”

Section: Electrochemical Performancementioning

confidence: 99%

Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance

Wang

Ren

et al. 2019

RSC Adv.

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“…EIS measurements were fitted using ZSimpWin (Version 3.50). Q expressed the constant phase element (CPE), which is used in place of double layer capacitance to describe the inhomogeneities [22]. The fitting values for the equivalent circuit elements and c 2 values are presented in Table S1.…”

Section: Eismentioning

confidence: 99%

An Enzyme‐free H₂O₂ Sensor Based on Poly(2‐Aminophenylbenzimidazole)/Gold Nanoparticles Coated Pencil Graphite Electrode

et al. 2018

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A poly(2‐aminophenylbenzimidazole)/gold nanoparticles (P2AB/AuNPs) coated disposable pencil graphite electrode (PGE) was fabricated as an enzyme‐free sensor for the H2O2 determination. P2AB/AuNPs and P2AB were successfully synthesized electrochemically on PGE in acetonitrile for the first time. The coatings were characterized by scanning electron microscopy, X‐ray diffraction spectroscopy, Energy‐dispersive X‐ray spectroscopy, Surface‐enhanced Raman spectroscopy, and UV‐Vis spectroscopy. AuNPs interacted with P2AB as carrier enhances the electrocatalytic activity towards reduction of H2O2. The analytical performance was evaluated in a 100 mM phosphate buffer solution at pH 6.5 by amperometry. The steady state current vs. H2O2 concentration is linear in the range of 0.06 to 100 mM (R2=0.992) with a limit of detection 3.67×10−5 M at −0.8 V vs. SCE and no interference is caused by ascorbic acid, dopamine, uric acid, and glucose. The examination for the sensitive determination of H2O2 was conducted in commercially available hair oxidant solution. The results demonstrate that P2AB/AuNPs/PGE has potential applications as a sensing material for quantitative determination of H2O2.

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Fast Fourier transformation electrochemical impedance spectroscopy for the investigation of inactivation of glucose biosensor based on graphite electrode modified by Prussian blue, polypyrrole and glucose oxidase

Cited by 51 publications

References 34 publications

Glucose Sensing Using Capacitive Biosensor Based on Polyvinylidene Fluoride Thin Film

Glucose Sensing Using Capacitive Biosensor Based on Polyvinylidene Fluoride Thin Film

Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance

An Enzyme‐free H₂O₂ Sensor Based on Poly(2‐Aminophenylbenzimidazole)/Gold Nanoparticles Coated Pencil Graphite Electrode

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Fast Fourier transformation electrochemical impedance spectroscopy for the investigation of inactivation of glucose biosensor based on graphite electrode modified by Prussian blue, polypyrrole and glucose oxidase

Cited by 51 publications

References 34 publications

Glucose Sensing Using Capacitive Biosensor Based on Polyvinylidene Fluoride Thin Film

Glucose Sensing Using Capacitive Biosensor Based on Polyvinylidene Fluoride Thin Film

Design and fabrication of polypyrrole/expanded graphite 3D interlayer nanohybrids towards high capacitive performance

An Enzyme‐free H2O2 Sensor Based on Poly(2‐Aminophenylbenzimidazole)/Gold Nanoparticles Coated Pencil Graphite Electrode

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An Enzyme‐free H₂O₂ Sensor Based on Poly(2‐Aminophenylbenzimidazole)/Gold Nanoparticles Coated Pencil Graphite Electrode