Pyranose oxidase biosensor based on carbon nanotube (CNT)-modified carbon paste electrodes

Demirkol, Dilek Odaci; Telefoncu, Azmi; Tımur, Suna

doi:10.1016/j.snb.2008.01.020

Cited by 53 publications

(26 citation statements)

References 49 publications

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“…Due to their exceptional structural, mechanical, electronic, optical and thermal properties, the CNTs have been utilised as functional materials in various kinds of high-technology applications such as biosensor, [1] supercapacitor, [2] humidity sensors [3] and electron field emitters. [4] To further improve their properties, one of the most effective techniques can be obtained by modifying the functionalisation of the surface of the CNTs with inorganic and metallic low-dimensional materials attached to the surface of CNTs in the form of hybrid composite.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted synthesis of ZnO/MWCNT hybrid nanocomposites and their alcohol-sensing properties

Potirak

Pecharapa

Techitdheera

2013

Journal of Experimental Nanoscience

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Zinc oxide and multi-walled carbon nanotube (ZnO/MWCNT) hybrid nanocomposites were synthesised by microwave-assisted method using the mixed solution of zinc acetate dehydrate (Zn(CH 3 COO) 2 Á2H 2 O) and treated MWCNTs. The syntheses were carried out at various microwave irradiation powers. The characterisation of the as-synthesised nanocomposites was conducted by powder X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD results revealed that the composites were composed of two phases of MWCNTs and hexagonal wurzite ZnO. The SEM results showed that the ZnO nanoparticles were well decorated on the surface of MWCNTs. The amount of ZnO nanoparticles and their size increased with increasing irradiation power. Thick-film sensors were fabricated onto interdigitated conducting electrodes using as-synthesised hybrid composites as sensing materials. The alcohol-sensing behaviour of the hybrid composite films was investigated. The results indicated that the irradiation power had significant influence on the sensing response of the sensors toward alcohol. The sensor fabricated from the composite synthesised at higher irradiation power exhibited an enhanced alcohol-sensing performance.

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Section: Introductionmentioning

confidence: 99%

Microwave-assisted synthesis of ZnO/MWCNT hybrid nanocomposites and their alcohol-sensing properties

Potirak

Pecharapa

Techitdheera

2013

Journal of Experimental Nanoscience

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“…of electroinactive small ions [148] Ionic liquids Ion-exchanging effects for accumulation of ions Ionic liquids Cysteine [149] Nanosized materials Catalytic effects, increased surface area, anchors Nanoparticles Act like micro-and macro-particles but with the increased activity; Core-shell nanoparticles Core as support (e.g., magnetic) for active shell catalyst; [153] Graphene paste electrode detn. of chlorpromazine [154] Graphene (+ ionic liquid) (+ ZrO 2 )…”

Section: Sorbentsmentioning

confidence: 99%

Carbon Paste Electrodes

Švancara

Kalcher

2015

Advances in Electrochemical Sciences and Engineering

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“…When CNTs have been used as an electrode, they have a characteristic to mediate electron-transfer reactions with electroactive species [15]. In our previous studies, CNTs-modified carbon paste electrodes were prepared and pyranose oxidase was immobilized to design glucose biosensors [16]. In another study, both enzymes α-glucosidase (AG) and pyranose oxidase (PyOx) were immobilized on graphite electrode surface covered with chitosan-CNTs and amperometric maltose detection was carried out [17].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube Modified Screen Printed Electrodes: Pyranose Oxidase Immobilization Platform for Amperometric Enzyme Sensors

Demirkol

Ozdemir²,

Pilloton³

et al. 2017

SDÜ Fen Bil Enst Der

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Here, a novel enzymatic biosensor was developed using multiwalled carbon nanotube including screen printed electrodes (MWCNT-SPE). Pyranose oxidase (PyOx) was immobilized on the electrode surface by way of gelatin membrane and then cross-linked using glutaraldehyde. Glucose was detected at -0.7 V (vs. Ag/AgCl) by watching consumed oxygen in enzymatic reaction after addition substrate. After optimization of pH and enzyme loading, the linearity was found in the range of 0.1-1.0 mM of glucose. After that, the effect of MCNT on the current was tested. Also the enzymatic biosensor including glucose oxidase instead of pyranose oxidase was prepared and the biosensor response followed for glucose. Furthermore, this system was tested for glucose analysis in soft drinks. Özet: Burada, çok duvarlı karbon nanotüp ile modifiye edilmiş şablonla baskılanmış elektrotları (MWCNT-SPE) kullanarak yeni bir enzimatik biyosensör geliştirilmiştir. Piranoz oksidaz (PyOx) jelatin membran vasıtasıyla elektrotların yüzeyine immobilize edilmiştir ve gluraldehid kullanarak çapraz bağlanma yapılmıştır. Glukoz; enzimatik reaksiyon sırasında kullanılan oksijen takip edilerek -0,7 V'da (Ag/AgCl'e karşı) belirlenmiştir. pH ve enzim miktarının optimizasyonundan sonra, glukoz tayini için doğrusal aralık 0,1-1,0 mM aralığı olarak bulunmuştur. Daha sonra, karbon nanotüplerin biyosensör cevabına etkisi test edilmiştir. Aynı zamanda piranoz oksidaz yerine glukoz oksidaz içeren enzimatik biyosensör hazırlanmıştır ve glukoz için biyosensör cevabı takip edilmiştir. Bunların dışında, içeceklerde glukoz analizi için sistem uygulanmıştır. Karbon Nanotüple Modifiye Edilmiş, Şablonla

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Pyranose oxidase biosensor based on carbon nanotube (CNT)-modified carbon paste electrodes

Cited by 53 publications

References 49 publications

Microwave-assisted synthesis of ZnO/MWCNT hybrid nanocomposites and their alcohol-sensing properties

Microwave-assisted synthesis of ZnO/MWCNT hybrid nanocomposites and their alcohol-sensing properties

Carbon Paste Electrodes

Carbon Nanotube Modified Screen Printed Electrodes: Pyranose Oxidase Immobilization Platform for Amperometric Enzyme Sensors

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