A glucose biosensor based on direct electrochemistry of glucose oxidase immobilized on nitrogen-doped carbon nanotubes

Deng, Shengyuan; Jian, Guoqiang; Lei, Jianping; Hu, Zheng; Ju, Huangxian

doi:10.1016/j.bios.2009.07.016

Cited by 244 publications

(128 citation statements)

References 42 publications

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“…should be investigated. Heteroatom doping in carbon nanotubes has shown to greatly improve the electrocatalytic activity [57,58,129,130]. This strategy has been applied in graphene-based material synthesis [131 -134] and theoretical study [135], but no reports are available on electrochemical study.…”

Section: Concluding Remarks and Future Directionsmentioning

confidence: 99%

Graphene Based Electrochemical Sensors and Biosensors: A Review

et al. 2010

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Graphene, emerging as a true 2-dimensional material, has received increasing attention due to its unique physicochemical properties (high surface area, excellent conductivity, high mechanical strength, and ease of functionalization and mass production). This article selectively reviews recent advances in graphene-based electrochemical sensors and biosensors. In particular, graphene for direct electrochemistry of enzyme, its electrocatalytic activity toward small biomolecules (hydrogen peroxide, NADH, dopamine, etc.), and graphenebased enzyme biosensors have been summarized in more detail; Graphene-based DNA sensing and environmental analysis have been discussed. Future perspectives in this rapidly developing field are also discussed.

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Section: Concluding Remarks and Future Directionsmentioning

confidence: 99%

Graphene Based Electrochemical Sensors and Biosensors: A Review

et al. 2010

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“…Accordingly, several strategies for the immobilization of enzymes have been assayed: covalent binding 15,16 , physical adsorption [17][18][19][20][21] or encapsulation within polymeric matrices 22 .…”

Section: Introductionmentioning

confidence: 99%

Modulation of the Silica Sol–Gel Composition for the Promotion of Direct Electron Transfer to Encapsulated Cytochrome c

et al. 2014

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The direct electron transfer between indium-tin oxide electrodes (ITO) and cytochrome c encapsulated in different sol-gel silica networks was studied. Cyt c@silica modified electrodes were synthesized by a two-step encapsulation method mixing a phosphate buffer solution with dissolved cytochrome c and a silica sol prepared by the alcohol free sol-gel route. These modified electrodes were characterized by cyclic voltammetry, UV-visible spectroscopy and in situ UV-visible spectroelectrochemistry.The electrochemical response of encapsulated protein is influenced by the terminal groups of the silica pores. Cyt c does not present electrochemical response in conventional silica (hydroxyl terminated) or phenyl terminated silica. Direct electron transfer to encapsulated cytochrome c and ITO electrodes only takes place when the protein is encapsulated in methyl modified silica networks.

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“…It has been argued that for many electrochemical applications of N-doped carbon materials, nitrogen incorporated into edge sites of the graphitic lattice show the highest electrochemical activity. 1,15 Thus, such configurations are most desirable for applications exploiting this doping.…”

Section: Physical Characterisationmentioning

confidence: 99%

Nitrogen-doped pyrolytic carbon films as highly electrochemically active electrodes

Nolan

McEvoy

Keeley

et al. 2013

Phys. Chem. Chem. Phys.

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abNitrogen-doped Pyrolytic Carbon (N-PyC) films were employed as an electrode material in electrochemical applications. PyC was grown by via non-catalysed chemical vapour deposition and subsequently functionalised via exposure to ammonia-hydrogen plasma. The electrochemical properties of the N-PyC films were investigated using the ferri/ferro-cyanide and hexaamine ruthenium(III) chloride redox probes.Exceptional electron transfer properties were observed and quantified for the N-PyC compared to the as-grown films. X-ray photoelectron spectroscopy confirmed the presence of nitrogen in edge plane graphitic configurations and the surface of the N-PyC was investigated using scanning electron microscopy and atomic force microscopy. The excellent electrochemical performance of the N-PyC, in addition to its ease of preparation, renders this material ideal for applications in electrochemical sensing.

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A glucose biosensor based on direct electrochemistry of glucose oxidase immobilized on nitrogen-doped carbon nanotubes

Cited by 244 publications

References 42 publications

Graphene Based Electrochemical Sensors and Biosensors: A Review

Graphene Based Electrochemical Sensors and Biosensors: A Review

Modulation of the Silica Sol–Gel Composition for the Promotion of Direct Electron Transfer to Encapsulated Cytochrome c

Nitrogen-doped pyrolytic carbon films as highly electrochemically active electrodes

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