A new type of hydrophilic carbon paste electrodes for biosensor manufacturing: binder paste electrodes

Parellada, Josefina; Narváez, Arántzazu; Domı́nguez, Elena; Katakis, Ioanis

doi:10.1016/s0956-5663(96)00066-8

Cited by 22 publications

(11 citation statements)

References 13 publications

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“…In contrast, the approach of enzyme-immobilization, or enzyme entrapment, is attractive in recent years due to stronger adhesion between enzyme and matrix. For example, the material, such as carbon gel [6] and polyvinyl chloride [7], was used to immobilize the enzyme onto the electrode. Besides, the method, which entraps biomolecules onto the electrode surface electrochemically, have also been extensively investigated recently [8].…”

Section: Introductionmentioning

confidence: 99%

Amperometric Glucose Biosensor Based on Entrapment of Glucose Oxidase in a Poly(3,4‐ethylenedioxythiophene) Film

2006

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In this study, conducting polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), is used as a matrix for the entrapment of glucose oxidase (GOD) and served as the working electrode for sensing glucose. The monomer, EDOT, is electropolymerized onto the platinum electrode by the cyclic voltammetric (CV) technique, scanned between 0.2 and 1.2 V (vs. Ag/AgCl/saturated KCl) in a phosphate buffer solution (PBS) containing GOD, which is entrapped into the PEDOT film simultaneously. The biosensor senses the reoxidative current of the mediator, ferricinium ions, with a constant applied potential of 0.35 V in the sensing system containing a phosphate buffer solution, ferricinium ions, and glucose. The indirect electrochemical method can efficiently reduce the sensing potential of the glucose. The sensing results show that the linear range of the calibration curve for the glucose concentration lies between 0.1 and 10.0 mM, which is a suitable level in the human body. Besides, the limit of detection and sensing sensitivity on glucose for the biosensor are 0.13 mM and 12.42 mA cm À2 M À1 , respectively. The response time of the biosensor, which is defined as the reaction current reaching 95% of the steady-state current, is about 4 -10 s. In the aspects of interferences on ascorbic acid (AA) and uric acid (UA), the sensing currents increased about 9.7% and 39.1%, respectively, when compared to the sensing current of glucose. Moreover, the biosensor shows a good stability in which the sensing current of the electrode retains 80% of its original one over a period of 18 days.

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Section: Introductionmentioning

confidence: 99%

Amperometric Glucose Biosensor Based on Entrapment of Glucose Oxidase in a Poly(3,4‐ethylenedioxythiophene) Film

2006

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“…Different kinds of electron mediator, such as hexacyanoferrates [4][5][6], glucose oxidase/Cu(II) complex [7], Os-complexes [8][9][10], quinon derivatives [11,12], organic dyes [13], conducting salts [14,15], cytocrome b562 [16], [60]fullerene [17], ferrocene [18][19][20] and ferrocene derivatives [22][23][24][25][26][27][28][29][30] has been described. Among them, ferrocene and its derivatives have some of the most promising characteristics.…”

Section: Introductionmentioning

confidence: 99%

Polyvinylferrocenium modified Pt electrode for anaerobic glucose monitoring

Gülce

2005

Journal of Biochemical and Biophysical Methods

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“…Most electricigens need hydrophilic redox mediators to function. Thus, a hydrophilic electrode can provide a natural environment for heterogeneous electron transfer and electrochemical reaction . On the other hand, NaX zeolite is a microporous material with a pore size of approximately 0.74 nm.…”

Section: Resultsmentioning

confidence: 99%

Effect of zeolite-coated anode on the performance of microbial fuel cells

Tong

Song

et al. 2014

J. Chem. Technol. Biotechnol.

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BACKGROUND: For a microbial fuel cell (MFC), the anode material plays a key part in power generation. Modification of conventional carbon-based anode materials is an effective strategy to improve MFC performance. RESULTS: Two different zeolites, namely, mobil catalytic materials number 41 (MCM-41) and NaX, were used to modify graphite felt anodes and compared with unmodified anodes in dual-chamber MFCs. Fourier transform infrared analysis verified that MCM-41 and NaX zeolites were successfully coated onto the bare graphite felt surface. Results showed that NaX zeolite is a favorable, affordable material for anode modification of MFCs. This zeolite improved MFC performance considerably. Its maximum power density (215.3 ± 6.4 mW m −2 ) and CE value (50.0% ± 2.0%) were 152.1% and 36.2% higher than those of the unmodified anode, respectively. According to scanning electron microscopy, cyclic voltammetry, and the amount of anode biomass, the superhydrophilicity of the NaX zeolite-modified anode was a vital reason for thick anode biofilm formation and accelerated anodic bio-electrochemical reactions. The improved specific surface area of the anode and properties of the microporous NaX zeolite were responsible for the enhancement of MFC performance. CONCLUSIONS: Graphite felt anode modified by NaX zeolite resulted in improved power generation by a MFC.

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A new type of hydrophilic carbon paste electrodes for biosensor manufacturing: binder paste electrodes

Cited by 22 publications

References 13 publications

Amperometric Glucose Biosensor Based on Entrapment of Glucose Oxidase in a Poly(3,4‐ethylenedioxythiophene) Film

Amperometric Glucose Biosensor Based on Entrapment of Glucose Oxidase in a Poly(3,4‐ethylenedioxythiophene) Film

Polyvinylferrocenium modified Pt electrode for anaerobic glucose monitoring

Effect of zeolite-coated anode on the performance of microbial fuel cells

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