Electrochemistry of glucose at gold nanoparticles modified graphite/SrPdO3 electrode – Towards a novel non-enzymatic glucose sensor

El-Ads, Ekram H.; Galal, Ahmed M.

doi:10.1016/j.jelechem.2015.04.033

Cited by 70 publications

(60 citation statements)

References 57 publications

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“…Regarding peak intensity, the Au@CF electrode provides defined and intense peaks. Overall, an intensity of around 2 mA cm −2 is obtained for peak b at the Au@CF electrode, which is a competitive value relative to that reported in the literature for glucose oxidation by materials decorated with gold nanoparticles . For example, El‐Ads et al .…”

Section: Resultsmentioning

confidence: 99%

One‐Pot Route to Gold Nanoparticles Embedded in Electrospun Carbon Fibers as an Efficient Catalyst Material for Hybrid Alkaline Glucose Biofuel Cells

et al. 2016

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Traditional strategies to develop Au metal nanoparticle catalysts for glucose oxidation comprise Au nanoparticles (NPs) supported on electrode surfaces. In this work, the fabrication of a new material capable of acting as an abiotic anode for the electrooxidation of glucose was developed. The material is composed of electrospun carbon fibers containing gold nanoparticles formed in situ from a polyacrylonitrile (PAN) solution with HAuCl4. This approach allows the pre‐reduction of the gold salt by PAN under mild conditions without the need for extra energy and leads to very stable carbon–gold bonding with well‐dispersed AuNPs, not previously reported. The gold‐modified carbon fibers (Au@CFs) were characterized by SEM, energy‐dispersive X‐ray spectroscopy, XRD, and electrochemical analysis. The Au@CF electrodes showed electrochemical activity toward glucose oxidation in alkaline media. Combined to a bilirubin oxidase modified biocathode (BOD@CFs), the resulting hybrid glucose biofuel cell showed open‐circuit voltage and power density values of 0.75 V and 65 μW cm−2, respectively, which remained intact after 3 weeks.

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Section: Resultsmentioning

confidence: 99%

One‐Pot Route to Gold Nanoparticles Embedded in Electrospun Carbon Fibers as an Efficient Catalyst Material for Hybrid Alkaline Glucose Biofuel Cells

et al. 2016

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“…The linear relationship between glucose concentration and the anodic peak current values of glucose oxidation can be described [ Fig. 11 (6) Note that the electrode performance was very reproducible regardless of the glucose concentration, which makes this electrode very suitable for real applications.…”

Section: Detection Of Glucose At Nio X @Cnf/gcementioning

confidence: 99%

“…Initially, precious metals, e.g., Au and Pt, were considered the main catalysts for the electrocatalytic oxidation of glucose in an alkaline medium because of their low oxidation potential as well as high current densities. (4)(5)(6)(7) However, these electrodes suffer from carbonaceous poisoning during the oxidation process, which results in the blocking of the active site available for the reaction. (4)(5)(6)(7) Recently, research has been devoted to using nonprecious transition metal oxides such as NiO x , CoO x , and MnO x as alternative catalysts for glucose oxidation in an alkaline medium (1)(2)(3)8,9) Among the aforementioned transition metal oxides, NiO x is considered one of the most promising catalysts for glucose oxidation owing to its extremely high activity and stability as well as easy preparation in many structures.…”

Section: Introductionmentioning

confidence: 99%

“…(4)(5)(6)(7) However, these electrodes suffer from carbonaceous poisoning during the oxidation process, which results in the blocking of the active site available for the reaction. (4)(5)(6)(7) Recently, research has been devoted to using nonprecious transition metal oxides such as NiO x , CoO x , and MnO x as alternative catalysts for glucose oxidation in an alkaline medium (1)(2)(3)8,9) Among the aforementioned transition metal oxides, NiO x is considered one of the most promising catalysts for glucose oxidation owing to its extremely high activity and stability as well as easy preparation in many structures. (1,3) Although tremendous effort has been devoted to replacing the conventional carbon black support materials in many electrochemical technologies, e.g., polymer electrolyte membrane fuel cells (PEMFCs) and supercapacitors with large-surface-area carbon materials such as reduced graphene oxide, CNFs, and carbon nanotubes, (1,2,(9)(10)(11)(12)(13) few studies were focused on the use of CNFs for nonenzymatic glucose electrooxidation.…”

Section: Introductionmentioning

confidence: 99%

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Nonenzymatic Nitrogen-Doped Carbon Nanofiber-Supported NiOx Glucose Sensor

2017

Sensors and Materials

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The glucose electrooxidation reaction at NiO x nanoparticles loaded on a nitrogen-doped carbon nanofiber (N-CNF)-modified glassy carbon electrode (NiO x @N-CNF/GCE) in an alkaline medium was studied. The N-CNF was produced by an electrospinning technique to acquire a large surface area. The produced electrode was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) coupled with energy-dispersive X-ray (EDX) analysis. The electrocatalytic properties of this electrode towards glucose oxidation were tested by cyclic voltammetry and linear sweep voltammetry (LSV). The NiO x @N-CNF/GCE catalytic activity towards glucose oxidation in an alkaline medium was found to be excellent in terms of measured glucose concentration and electrode stability. It showed high reproducibility and stability towards glucose oxidation with activity retention even after 100 cycles of continuous potential scanning. In addition, NiO x @ N-CNF/GCE showed a good linear behavior of glucose concentration detection in the concentration range between 0.0 and 10.0 mM, which highlights its ability to be used as a nonenzymatic glucose biosensor.

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“…The emerging material to load nanoparticles is frequently used to pretend nanoparticles aggregation, but the usage of various material complicate the fabrication process . Direct electrodeposition of gold nanoparticles could overcome complicated preparation and usage of emerging materials . For example, Chiang et al prepared electrodeposited gold nanoparticles surface by studying three different methods of gold surface preparation .…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Gold Microelectrodes for Non‐enzymatic Glucose Sensor

et al. 2019

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A novel, highly stable, selective, and sensitive non‐enzymatic glucose sensor was developed by simple and effective modification procedure. The modification of gold microelectrodes by electrochemically deposited gold nanoparticles resulted in increase of surface area up to 37 %. The nanostructured surfaces of the gold microelectrodes obtained by different modifications were studied by confocal microscopy, atomic force microscopy, and scanning electron microscopy. The gold nanoclusters exhibit great electrocatalytic properties toward glucose with a wide linear range from 0.5 to 50 mM, with a limit of detection 218 μM, and sensitivity of 185.2 mA mM−1cm−2. Moreover, the modified microelectrodes display good reproducibility, stability, and selectivity in the presence of poisoning compounds. Due to the small dimensions of gold microelectrodes and a very small volume of the sample, the microelectrodes make a contribution to miniaturisation of the system.

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Electrochemistry of glucose at gold nanoparticles modified graphite/SrPdO3 electrode – Towards a novel non-enzymatic glucose sensor

Cited by 70 publications

References 57 publications

One‐Pot Route to Gold Nanoparticles Embedded in Electrospun Carbon Fibers as an Efficient Catalyst Material for Hybrid Alkaline Glucose Biofuel Cells

One‐Pot Route to Gold Nanoparticles Embedded in Electrospun Carbon Fibers as an Efficient Catalyst Material for Hybrid Alkaline Glucose Biofuel Cells

Nonenzymatic Nitrogen-Doped Carbon Nanofiber-Supported NiOx Glucose Sensor

Nanostructured Gold Microelectrodes for Non‐enzymatic Glucose Sensor

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