Electrochemistry and biosensing of glucose oxidase based on mesoporous carbons with different spatially ordered dimensions

You, Chunping; Xu, Xin; Tian, Bozhi; Kong, Jilie; Zhao, Dongyuan; Liu, Baohong

doi:10.1016/j.talanta.2008.12.032

Cited by 58 publications

(30 citation statements)

References 26 publications

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“…Figure 1A shows the low-angle XRD pattern of the CMK-3 sample. The pattern of CMK-3 exhibits an intense diffraction peak and two weak peaks, indexed to (100), (110) and (200) reflections of 2-D hexagonal structure (space group of P6 mm), which is consistent with those patterns previously reported [30,31]. Figure 1B shows two TEM images for CMK-3 viewed along and perpendicular to (inset) the direction of the pore arrangement.…”

Section: Water Samples Preparationsupporting

confidence: 86%

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Simultaneous determination of nitroaromatic compounds in water using capillary electrophoresis with amperometric detection on an electrode modified with a mesoporous nano‐structured carbon material

Nie

Zhang

et al. 2010

Electrophoresis

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In this article, a carbon disk electrode modified with mesoporous carbon material (CMK-3) was used in CE with amperometric detection system for the simultaneous determination of four types of important nitroaromatic compounds, including 2,4,6-trinitrotoluene (TNT), 1,3,5-trinitrobenzene (TNB), 2,4-dinitrotoluene (DNT) and 1,3-dinitrobenzene (DNB). Compared with the bare carbon electrode, the CMK-3 modified electrode greatly improved the sensitivity at a relatively positive detection potential due to its excellent electrocatalytic activities, high conductivity and large effective surface area. The four analytes could be well separated and detected within 480 s. A good linear response was obtained for TNB, DNB, TNT and DNT from 8.4 to 5.0 x 10(3) μg/L, with correlation coefficients higher than 0.9992. And the detection limits were established between 3.0 and 4.7 μg/L for the four investigated nitroaromatic compounds (S/N=3). The CMK-3-modified electrode was successfully employed to analyze coking wastewater, tap water and river samples with recoveries in the range of 94.8-109.0%, and RSDs less than 5.0%. The presented results demonstrated that the CMK-3-modified carbon electrode used in CE with amperometric detection was of convenient preparation, high sensitivity and good repeatability, which could be employed in the rapid determination of practical samples.

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Section: Water Samples Preparationsupporting

confidence: 86%

“…All these characteristics make it an ideal material for the preparation of electrochemical sensors. For example, glucose oxidase was immobilized in the CMK-3 matrix for biosensor application [31]. CMK-3/Nafion composite film was constructed for the determination of dopamine, ascorbic acid and uric acid [32].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of nitroaromatic compounds in water using capillary electrophoresis with amperometric detection on an electrode modified with a mesoporous nano‐structured carbon material

Nie

Zhang

et al. 2010

Electrophoresis

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“…Similarly, You et al [49] demonstrated a strategy of a protein entrapment within mesoporous carbon matrices to probe the electrochemistry of glucose oxidase. The large surface area and remarkable electro-catalytic properties of mesoporous carbon materials make them suitable candidates for high loading of protein molecules and the promotion of heterogeneous electron transfer.…”

Section: Incorporation Active Molecules In Omc With Large Porementioning

confidence: 99%

Ordered mesoporous carbon for electrochemical sensing: A review

Ndamanisha

Guo

2012

Analytica Chimica Acta

180

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“…7), reaching saturation at values above 160 μM. These values are quite acceptable compared to the performance of other configuration of glucose oxidase immobilized on various carbon electrodes [11,14,34,39], even though the optimization of nanoporous carbons as electrode materials for glucose biosensing was not the scope of this work. The stability and reproducibility of the stability of the GC/G75/GOX electrode were also evaluated after various week storage in PBS at 4°C.…”

Section: Journal Of Electroanalytical Chemistry 808 (2018) 372-379mentioning

confidence: 82%

“…Such small dimensions of the pore openings prevent the glucose oxidase, hence its immobilization in the inner mesopore network. There some studies in the literature on the use mesoporous carbons as supports for GOX, reporting successful immobilization on carbons with ordered structure and pore diameters of about 4.1 and 4.2 nm [34]. This suggests that 3.5 nm is a threshold pore aperture value for the immobilization of glucose oxidase on nanoporous materials.…”

Section: Journal Of Electroanalytical Chemistry 808 (2018) 372-379mentioning

confidence: 99%

Nanoconfinement of glucose oxidase on mesoporous carbon electrodes with tunable pore sizes

Ania

Gomis‐Berenguer

Dentzer

et al. 2018

Journal of Electroanalytical Chemistry

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A B S T R A C TBy using a series of nanoporous carbons with a controlled distribution of pore sizes we have demonstrated the effect of commensurate confinement in the nanopores of the carbon electrodes in the electrochemical and enzymatic activity of immobilized glucose oxidase. The nanoconfinement resulted in more efficient oxidation of glucose through direct electron tunneling of the flavin adenine dinucleotide (FAD) site and the electrode surface. The electrochemical and enzymatic activity was boosted in carbon materials with pores which size matched the dimensions of the enzyme. This is attributed to the conformational changes of the biomolecule in the nanoconfined state, and the proximity of the FAD active site and the carbon electrode pores/walls boosts the electron transfer even in the absence of a mediator. The thermal profiles of the immobilized enzyme provided direct evidence of the conformational changes in the nanoconfined state, and their correlation with the average mesopore size of the carbon material. For the material showing the most adequate porosity, the nanoconfined enzyme retained the electrocatalytic activity towards glucose oxidation -even in the absence of mediator-, and at a broad range of concentrations. This approach is essential to make further clear some critical issues about the immobilization of enzymes on nanoporous carbon electrodes for bioelectrochemical applications.

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Electrochemistry and biosensing of glucose oxidase based on mesoporous carbons with different spatially ordered dimensions

Cited by 58 publications

References 26 publications

Simultaneous determination of nitroaromatic compounds in water using capillary electrophoresis with amperometric detection on an electrode modified with a mesoporous nano‐structured carbon material

Simultaneous determination of nitroaromatic compounds in water using capillary electrophoresis with amperometric detection on an electrode modified with a mesoporous nano‐structured carbon material

Ordered mesoporous carbon for electrochemical sensing: A review

Nanoconfinement of glucose oxidase on mesoporous carbon electrodes with tunable pore sizes

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