Ascorbic Acid Detection with MnO2-Modified GCPE

Çevik, Serdar; Akpolat, Oğuz; Anık, Ülkü

doi:10.1007/s12161-015-0221-8

Cited by 15 publications

(10 citation statements)

References 22 publications

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“…Ç evik et al and Luo et al also reported that the use of MnO 2 np provides better sensitivity compared to bare electrodes for ascorbic acid detection and for glucose biosensors. 15,19 Overall, in the above studies, it has been demonstrated that the better results obtained were due to MnO 2 np introduced in the electrodes' structures. 15,19 On the other hand, the GOx/Al 2 O 3 -TiO 2 /GCPE bioanode exhibited lower maximum current and power densities compared to the GOx/MnO 2 np/GCPE bioanode.…”

Section: Electrochemical Characterization Of the Developed Bioanodesmentioning

confidence: 76%

“…15,19 Overall, in the above studies, it has been demonstrated that the better results obtained were due to MnO 2 np introduced in the electrodes' structures. 15,19 On the other hand, the GOx/Al 2 O 3 -TiO 2 /GCPE bioanode exhibited lower maximum current and power densities compared to the GOx/MnO 2 np/GCPE bioanode. If the GOx/GCPE bioanode's performance is compared with that of the GOx/Al 2 O 3 -TiO 2 /GCPE bioanode, it can be seen that the GOx/Al 2 O 3 -TiO 2 /GCPE bioanode showed better power density but lower maximum current density and OCP values ( Table 2).…”

Section: Electrochemical Characterization Of the Developed Bioanodesmentioning

confidence: 76%

“…8,15,25 Since MnO 2 np and Al 2 O 3 -TiO 2 nanostructures exhibit sensitive and stable results when used in biosensors, we think that their performance in BFCs is worth examining. As far as we know, Al2 O 3 -TiO 2 nanostructures have never been used in BFC construction before; additionally this is the first study where MnO 2 np and Al 2 O 3 -TiO 2 nanostructures were used as modifiers for composite bioanodes.…”

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confidence: 99%

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Comparison of influence of nanomaterials on a glassy carbon paste electrode-based bioanode in biofuel cells

Aslan¹,

Tutum²,

Tepeli³

et al. 2016

Turk J Chem

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This paper presents a comparative study of nanomaterial modified glassy carbon paste electrodes (GCPEs) used as bioanodes in enzymatic biofuel cells. The developed bioanode electrodes were obtained by modification of composite GCPEs with glucose oxidase (GOx) and different nanomaterials like manganese(IV) oxide nanoparticle (MnO 2 np) and aluminum titanate (Al 2 O 3-TiO 2) bimetallic nanostructure. These nanostructures were utilized in a GCPEbased enzymatic bioanode construction for the first time. P-benzoquinone mediator was used for the electron transfer between enzyme redox center and bioanode electrode where glucose analyte was used as substrate. A laccase-modified plain GCPE was used as biocathode electrode. Then these electrodes were combined in a membraneless biofuel cell (BFC). The power densities of single cell BFCs were 0.619 µ W cm −2 (at 34 mV) for the plain GCPE, 4.57 µ W cm −2 (at 76 mV) for the GOx/MnO 2 np/GCPE, and 1.41 µ W cm −2 (at 36 mV) for the GOx/Al 2 O 3-TiO 2 /GCPE. As a result, it has been observed that the MnO 2 np/GOx/GCPE exhibits the best power density. The current density value of this bioanode has also been examined and found to be 99.21 µ A cm −2 in phosphate buffer solution (pH 7) with maximum open circuit potential of 294 mV.

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Section: Electrochemical Characterization Of the Developed Bioanodesmentioning

confidence: 76%

Section: Electrochemical Characterization Of the Developed Bioanodesmentioning

confidence: 76%

mentioning

confidence: 99%

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Comparison of influence of nanomaterials on a glassy carbon paste electrode-based bioanode in biofuel cells

Aslan¹,

Tutum²,

Tepeli³

et al. 2016

Turk J Chem

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“…For instance, two different studies are carried out while completely covering the available range of AA presents in human bodies. The claimed detection limit of sensor structures is also good, but there is no discussion about the sensitivity of sensor probes [8,39]. Similarly, two different sensor structures based on colorimetric schemes are also claiming the better detection limit to detect the presence of AA.…”

Section: Performance Study Of the Proposed Sensormentioning

confidence: 99%

“…The malnutrition of AA in the human body is closely related to severe symptoms such as scurvy, Parkinson's, Alzheimer's, and cardiovascular diseases [5,6]. Therefore, for the detection of AA, several methods have been proposed including electrochemistry [7,8], fluorescence [9,10], calorimetry [11], liquid chromatography [12], and ultraviolet-visible (UV-vis) spectrometry [13]. However, these methods are not very attractive because of their low sensitivity, limited selectivity, and complicated procedures.…”

Section: Introductionmentioning

confidence: 99%

Tapered Optical Fiber-Based LSPR Biosensor for Ascorbic Acid Detection

et al. 2020

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The ascorbic acid (AA) is a biomarker that can be used to detect the symptoms of severe disorders such as scurvy, Parkinson’s, Alzheimer’s, and cardiovascular diseases. In this work, a simple and effective sensor model is developed to diagnose the presence of AA samples. To develop the sensor, a tapered single-mode optical fiber has been used with the well-known phenomenon of localized surface plasmon resonance (LSPR). For LSPR, the tapered region is immobilized with synthesized gold nanoparticles (AuNPs) and zinc oxide nanoparticles (ZnO-NPs) whose absorbance peak wavelengths appear at 519nm and 370nm, respectively. On the basis of nanoparticles (NPs) configurations, two different biosensor probes are developed. In the first one, the sensing region is immobilized with AuNPs and named Probe I. In the second probe, the immobilized layer of AuNPs is further coated with a layer of ZnO-NPs, and a resultant probe is termed as Probe II. The characterizations of synthesized AuNPs and developed fiber probes are done by the ultraviolet-visible (UV-vis) spectrophotometer, high-resolution transmission electron microscope (HR-TEM), atomic force microscopy (AFM), and scanning electron microscope (SEM). To enhance the selectivity, a sensing region of probes is functionalized with ascorbate oxidase enzyme that oxidizes the AA in the presence of oxygen. The response of developed sensor probes is authenticated by sensing the samples of AA in the range from 500 nM to 1 mM, which covers the range of AA found in human bodies, i.e., 40µM–120µM. The performance analysis of the developed sensor probes has been done in terms of their stability, reproducibility, reusability, and selectivity. To observe the stability of AA, a pH-test has also been done that results in a better solubility of AA molecules in phosphate-buffered saline (PBS) solution.

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Development of Apple Tissue Based Biocathode and MWCNT−Pt−Au Nanomaterial Based Bioanode Biofuel Cell

et al. 2020

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A biofuel cell (BFC) was fabricated by combining multiwalled carbon nanotube ‐platinum‐gold (MWCNT−Pt−Au) hybrid nanomaterial, glucose oxidase (GOx) and benzoquinone included carbon felt electrode (CFE) bioanode with apple tissue included CFE biocathode. The working parameters of bioanode were optimized both experimentally and chemometrically. For the biocathode, apple, banana and pear tissues were tried and best power output was obtained with apple tissue. By combining MWCNT−Pt−Au/GOx/CFE bioanode with apple tissue based biocathode, single cell, double cell with membrane and with salt‐bridge BFCs were formed. The best power output with highest current density were obtained with single cell BFC.

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Ascorbic Acid Detection with MnO2-Modified GCPE

Cited by 15 publications

References 22 publications

Comparison of influence of nanomaterials on a glassy carbon paste electrode-based bioanode in biofuel cells

Comparison of influence of nanomaterials on a glassy carbon paste electrode-based bioanode in biofuel cells

Tapered Optical Fiber-Based LSPR Biosensor for Ascorbic Acid Detection

Development of Apple Tissue Based Biocathode and MWCNT−Pt−Au Nanomaterial Based Bioanode Biofuel Cell

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