Enzymatic biosensor based on dendritic gold nanostructure and enzyme precipitation coating for glucose sensing and detection

Bi, R.; Ma, Xiaoyan; Miao, Kunpeng; Ma, Pengcheng; Wang, Qianqian

doi:10.1016/j.enzmictec.2022.110132

Cited by 24 publications

(8 citation statements)

References 35 publications

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“…The samples were prepared via CV and CA method. (1, 2) pH1_CV_60 (30 cycles), (3,4) pH1_CV_60 (40 cycles), (5,6) pH1_CV_90, (7, 8) pH1_CA_60, (9, 10) pH1_CA_90, (11,12) pH2_CV_60, (13,14) pH2_CV_90, (15, 16) pH2_CA_60, (17,18) pH2_CA_90, (19,20) pH3.5_CV_60, (21,22) pH3.5_CV_90, (23,24) pH3.5_CA_60, (25,26) pH3.5_CA_90. For details, see main text.…”

Section: 2mentioning

confidence: 99%

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Formation of MnO2-based electrodes with high catalytic activity on the surface of ITO for glucose detection

Poltavets

Krawczyk

Maslak³

et al. 2023

Preprint

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In this paper, we report on the formation of MnO2-based electrodes for the determination of hydrogen peroxide. We apply thin films of manganese dioxide on the surface of indium tin oxide-coated glass (ITO) using electrochemical deposition under different conditions. MnO2 is a selective catalyst for the decomposition of hydrogen peroxide. Of all methods of sediment formation, we settled on anodic electrodeposition in sulphate electrolytes. By changing the conditions of the process, we can form an electrode material MnO2/ITO with maximum catalytic performance. The electrodes were characterized by SEM, electrochemical impedance spectroscopy, and XPS. The MnO2/ITO and GOx/MnO2/ITO (modified with glucose oxidase enzymes (GOx)) electrodes’ sensing properties were studied by chronoamperometry at an applied potential and by cyclic voltammetry. The film of manganese dioxide with the best catalytic characteristics is formed by electrochemical deposition on the surface of the ITO in electrolyte with pH 1 by CV method during 30 cycles at the range of potentials 0.65 V – 2.1 V vs Ag/AgCl/3M KCl and after this drying at 60°C. the MnO2 films form branching networks which provide an extra-large surface area and show high conductivity. As a proof-of-principle, we developed a GOx/MnO2/ITO working electrode for biosensors for the detection of glucose based on the electrocatalytic determination of hydrogen peroxide generated in the process of enzymatic glucose oxidation. The calibration curve of the GOx/MnO2/ITO electrode shows a linear relationship with the concentration of glucose from 0.1 mM to 3 mM with a correlation coefficient of 0.9938. The sensitivity of such an electrode is 117.8 μA/mmol cm2. The developed electrode can be used in glucose biosensors or similar systems based on other oxidases.

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Section: 2mentioning

confidence: 99%

“…The development of electrochemical biosensors has been an important area of biotechnology in recent times [1], [2], [3], [4]. Much of the work is devoted to the development of sensors for the determination of glucose [5], [6], [7], [8].…”

Section: Introductionmentioning

confidence: 99%

Formation of MnO2-based electrodes with high catalytic activity on the surface of ITO for glucose detection

Poltavets

Krawczyk

Maslak³

et al. 2023

Preprint

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“…Additionally, covalent bonding improved the enzyme stability by preserving denaturation and enzyme leakage. Recently, Bi et al [ 109 ] reported on Au nanodendrite and GOx immobilized via EPC for the modification of flexible carbon fiber cloth. The nanodendrite structure provided a large surface area for GOx loading through EPC.…”

Section: Parameters Controlling Enzymatic and Non-enzymatic Glucose B...mentioning

confidence: 99%

Progress of Enzymatic and Non-Enzymatic Electrochemical Glucose Biosensor Based on Nanomaterial-Modified Electrode

2022

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This review covers the progress of nanomaterial-modified electrodes for enzymatic and non-enzymatic glucose biosensors. Fundamental insights into glucose biosensor components and the crucial factors controlling the electrochemical performance of glucose biosensors are discussed in detail. The metal, metal oxide, and hybrid/composite nanomaterial fabrication strategies for the modification of electrodes, mechanism of detection, and significance of the nanomaterials toward the electrochemical performance of enzymatic and non-enzymatic glucose biosensors are compared and comprehensively reviewed. This review aims to provide readers with an overview and underlying concept of producing a reliable, stable, cost-effective, and excellent electrochemical performance of a glucose biosensor.

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“…The development of electrochemical biosensors has been an important area of biotechnology in recent times. [1][2][3][4] Much of the work is devoted to the development of sensors for the determination of glucose. [5][6][7][8][9][10][11] Today, most authors consider an increase in the sensitivity and high selectivity of the working electrodes of biosensors for glucose, the ability to analyse in a wide range of concentrations, and a low working potential to be important goals.…”

Section: Introductionmentioning

confidence: 99%

Formation of MnO₂-coated ITO electrodes with high catalytic activity for enzymatic glucose detection

Poltavets,

Krawczyk,

Maslak

et al. 2023

Dalton Trans.

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Enzymatic biosensor based on dendritic gold nanostructure and enzyme precipitation coating for glucose sensing and detection

Cited by 24 publications

References 35 publications

Formation of MnO2-based electrodes with high catalytic activity on the surface of ITO for glucose detection

Formation of MnO2-based electrodes with high catalytic activity on the surface of ITO for glucose detection

Progress of Enzymatic and Non-Enzymatic Electrochemical Glucose Biosensor Based on Nanomaterial-Modified Electrode

Formation of MnO₂-coated ITO electrodes with high catalytic activity for enzymatic glucose detection

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Enzymatic biosensor based on dendritic gold nanostructure and enzyme precipitation coating for glucose sensing and detection

Cited by 24 publications

References 35 publications

Formation of MnO2-based electrodes with high catalytic activity on the surface of ITO for glucose detection

Formation of MnO2-based electrodes with high catalytic activity on the surface of ITO for glucose detection

Progress of Enzymatic and Non-Enzymatic Electrochemical Glucose Biosensor Based on Nanomaterial-Modified Electrode

Formation of MnO2-coated ITO electrodes with high catalytic activity for enzymatic glucose detection

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Formation of MnO₂-coated ITO electrodes with high catalytic activity for enzymatic glucose detection