Polyelectrolyte stabilized oxidase based biosensors: effect of diethylaminoethyl-dextran on the stabilization of glucose and lactate oxidases into porous conductive carbon

Gavalas, Vasilis G.; Chaniotakis, Nikos A.

doi:10.1016/s0003-2670(99)00688-1

Cited by 79 publications

(47 citation statements)

References 32 publications

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“…The lower pore diameter of the silica beads could justify the higher performance obtained. Other authors such as Gavalas and Chaniotakis [201,202] and Sotiropoulou et al [203] studied the effect of introducing a mediator (fullerenes, diethylaminoethyl-dextran, and carbon nanotubes) into a nanoporous carbon matrix (porous structure parameters were not specified in detail) to improve the capacity to immobilize enzymes (glucose, lactate oxidase, and peroxide). In all cases, the use of a mediator led to an enhanced enzyme stabilization capacity.…”

Section: Other Properties (Sensors and Optical And Multifunctional Mamentioning

confidence: 99%

Nanoporous polymeric materials: A new class of materials with enhanced properties

Notario

Pinto

Rodríguez‐Pérez

2016

Progress in Materials Science

171

125

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a b s t r a c tNanoporous polymeric materials are porous materials with pore sizes in the nanometer range (i.e., below 200 nm), processed as bulk or film materials, and from a wide set of polymers. Over the last several years, research and development on these novel materials have progressed significantly, because it is believed that the reduction of the pore size to the nanometer range could strongly influence some of the properties of porous polymers, providing unexpected and improved properties compared to conventional porous and microporous polymers and non-porous solids.In this review, the key properties of these nanoporous polymeric materials (mechanical, thermal, dielectric, optical, filtration, sensing, etc.) are analyzed. The experimental and theoretical results obtained up to date related to the structure-property relations are presented. In several sections, in order to present a more compressive approach, the trends obtained for nanoporous polymers are compared to those for metallic and ceramic nanoporous systems. Moreover, some specific characteristics of these materials, such as the consequences of the confinement of both gas and solid phases, are described. Likewise, the main production methods are briefly described. Finally, some of the potential applications of these materials are also discussed in this paper.

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Section: Other Properties (Sensors and Optical And Multifunctional Mamentioning

confidence: 99%

Nanoporous polymeric materials: A new class of materials with enhanced properties

Notario

Pinto

Rodríguez‐Pérez

2016

Progress in Materials Science

171

125

View full text Add to dashboard Cite

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“…The use of enzymes in the fabrication of sensors has advantages due to their rapid, selective, and sensitive nature. However, there exist some practical problems related to the use of enzymes in analytical devices due to their short lifetime and low reusability since they are easily affected by temperature, humidity, and pH (Gavalas & Chaniotakis, 2000, 2001. To address these issues, non-enzymatic sensors based on the direct electrocatalytic oxidation of glucose are being investigated for their stability, simple fabrication, reproducibility, low cost, and freedom from oxygen limitation, unlike enzyme-based sensors .…”

Section: Enzyme-free Biosensor Based On Chemical Reactionmentioning

confidence: 99%

Fabrication of biosensors using vinyl polymer-grafted carbon nanotubes

Chung¹,

Kwen²,

Choi³

2011

New Perspectives in Biosensors Technology and Applications

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“…Most of the modified electrodes for amperometric determination of hydrogen peroxide are based on enzymes such as horseradish peroxidase [27][28][29][30]. However, there still exist some practical problems related to the use of enzyme in these analytical devices, due to the short operational lifetimes and low reusability of these biocatalysts [31,32]. However, the employment of nonenzymatic sensors for determination of hydrogen peroxide is an important priority in chemical, food and environmental.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Amperometric Sensor for Hydrogen Peroxide by Using a Carbon Paste Electrode Modified with Cobalt Impregnated Zeolite

Norouzi¹,

Moradian²,

Malekan³

2015

Port. Electrochim. Acta

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Cobalt impregnated zeolite-modified electrode was prepared by mixing cobalt-zeolite (Co-Z) and graphite powder with different percentages. Using the cyclic voltammetric technique, the electrochemical oxidation of hydrogen peroxide at such electrodes was investigated. Experiments on zeolite show that it is not electrochemically active towards hydrogen peroxide oxidation in NaOH solution. The presence of cobalt ions in the zeolite matrix, by soaking the electrode in an aqueous Co(NO 3 ) 2 solution, markedly enhances the electrocatalytic activity which was found to depend on the cobalt content. On the other hand, the presence of zeolite and/or Co metals in the catalyst is essential; however, the electro-catalytic activity depends on different percentages of Co-Z. Under the selected conditions, the anodic peak current was linearly dependent on the concentration of the hydrogen peroxide in the range 0.03-9 and 0.006-0.1 mM with CV and amperometric methods, respectively. The detection limits (S/N=3) were also estimated to be 17 and 2.5 µM.

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Polyelectrolyte stabilized oxidase based biosensors: effect of diethylaminoethyl-dextran on the stabilization of glucose and lactate oxidases into porous conductive carbon

Cited by 79 publications

References 32 publications

Nanoporous polymeric materials: A new class of materials with enhanced properties

Nanoporous polymeric materials: A new class of materials with enhanced properties

Fabrication of biosensors using vinyl polymer-grafted carbon nanotubes

An Efficient Amperometric Sensor for Hydrogen Peroxide by Using a Carbon Paste Electrode Modified with Cobalt Impregnated Zeolite

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