Bioelectrochemical systems with oleylamine-stabilized gold nanostructures and horseradish peroxidase for hydrogen peroxide sensor

Koposova, Ekaterina; Liu, Xiao; Kisner, Alexandre; Ermolenko, Yu. Е.; Шумилова, Г. И.; Offenhäusser, Andreas; Mourzina, Yulia

doi:10.1016/j.bios.2014.01.034

Cited by 58 publications

(30 citation statements)

References 42 publications

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“…It is higher than 0.031 and 0.027 A M −1 cm −2 of oleylamine-stabilized gold nanowires and particles based HRP biosensors. 26 The detection limit of the sensor was found to be 0.12 μM, based on a signal-to-noise ratio of 3, which is better than those of the above-mentioned HRP biosensors (1.5, 25 5 (gold nanowires) and 8 μM (gold nanoparticles) 26 ) and copolymer filmbased (1.25 μM) 12 and doped polyaniline film-based (4 μM) 2 sensors.…”

Section: Xps and Cyclic Voltammetry Characterization Of Pnmth-mentioning

confidence: 96%

Electrocatalytic Oxidation and Determination of Hydrogen Peroxide at Poly(N-methylthionine) Electrodes

Chen

Hong

et al. 2015

J. Electrochem. Soc.

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Poly(N-methylthionine) (PNMTh) was utilized as an electrocatalyst to lower the overpotential of hydrogen peroxide (H 2 O 2 ) oxidation compared with bulk platinum. The electrocatalyst was prepared by potential cycling from a phosphate buffer solution containing Nmethylthionine and sodium chloride on a platinum foil electrode. X-ray photoelectron spectroscopy (XPS) demonstrated the formation of the polymer film. Cyclic voltammetry and chronoamperometry showed the PNMTh electrode had an excellent electrocatalytic activity toward H 2 O 2 oxidation. Furthermore, the PNMTh electrode was found to be promising as an amperometric detector for H 2 O 2 . The proposed enzyme-free H 2 O 2 sensor exhibited a wide linear range (1-700 μM), fast response (2 s), low detection limit (0.12 μM), high sensitivity, and long-term stability, plus low cost.

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Section: Xps and Cyclic Voltammetry Characterization Of Pnmth-mentioning

confidence: 96%

Electrocatalytic Oxidation and Determination of Hydrogen Peroxide at Poly(N-methylthionine) Electrodes

Chen

Hong

et al. 2015

J. Electrochem. Soc.

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“…Some studies demonstrated the modification of electrode materials with ultrathin metal nanowires matrix [12][13][14]. However, highly reproducible devices with regard to the number of NWs crossing the contact electrode gap and contact areas between the NWs and contact electrodes [6,15] have not been practicable thus far.…”

Section: Introductionmentioning

confidence: 99%

On “resistance overpotential” caused by a potential drop along the ultrathin high aspect ratio gold nanowire electrodes in cyclic voltammetry

Muratova

Mikhelson

Ermolenko

et al. 2016

J Solid State Electrochem

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High aspect ratio ultrathin (d10 nm) gold nanowires deposited on Si/SiO2 substrate are used as working electrodes for measuring cyclic voltammograms (CVs) in aqueous solutions of ferrocene methanol and potassium hexacyanoferrate(III). The broadening of the peak separation as compared with that at a solid working electrode is explained as a result of the potential drop ("resistance overpotential") along nanowires and nanowire network. The change in the CV shape over a sequence of scans is ascribed to a gradual breakup of individual nanowires and the respective transition of the linear diffusion to hemispherical diffusion regularities.

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“…The increasing R ct reflected the degressive electrical conductivity of chitosan because of protonation of amino groups, and the increasing Ep indicated the declined ability of electronic transfer. Considering the film-forming and electrical conductivity of chitosan, in addition, HRP was reported to be most active at nearly neutral [28][29] , chitosan solution at pH 6.0 was used in the fabrication of HRP@MXene/ chitosan/GCE biosensor. Fig.…”

Section: Electrochemical Behavior Of the Fabricated Gce Biosensormentioning

confidence: 99%

Enzyme-MXene Nanosheets: Fabrication and Application in Electrochemical Detection of H2O2

Ma¹,

Li²,

Cheong³

et al. 2019

Journal of Inorganic Materials

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Two-dimensional MXene nanosheets with vertical junction structure was employed for easy immobilization of horse radish peroxidase enzymes to fabricate the electrochemical hydrogen peroxide (H 2 O 2) biosensor. The synthesized MXene nanosheets exhibited large specific area, excellent electronic conductivity and good dispersion in aqueous phase. Horse Radish Peroxidase (HRP) enzymes molecules immobilized on MXene/chitosan/GCE electrode demonstrated good electrocatalytic activity toward reduction of H 2 O 2. The fabricated HRP@MXene/chitosan/GCE biosensor exhibited a wide linear range from 5 to 1650 μmolL 1 , a limit of detection of 0.74 μmolL 1 and good operation stability. The fabricated biosensor was successfully employed for detection of trace level of H 2 O 2 in both solid and liquid food.

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Bioelectrochemical systems with oleylamine-stabilized gold nanostructures and horseradish peroxidase for hydrogen peroxide sensor

Cited by 58 publications

References 42 publications

Electrocatalytic Oxidation and Determination of Hydrogen Peroxide at Poly(N-methylthionine) Electrodes

Electrocatalytic Oxidation and Determination of Hydrogen Peroxide at Poly(N-methylthionine) Electrodes

On “resistance overpotential” caused by a potential drop along the ultrathin high aspect ratio gold nanowire electrodes in cyclic voltammetry

Enzyme-MXene Nanosheets: Fabrication and Application in Electrochemical Detection of H2O2

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