Glucose sensors made of novel carbon nanotube-gold nanoparticle composites.

Glucose sensors made of novel carbon nanotube-gold nanoparticle composites. Research Abstract Details 

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Glucose sensors made of novel carbon nanotube-gold nanoparticle composites. Abstract Text:

Carbon nanotube and metal particle composites have been exploited to fabricate high performance electrochemical devices. However, the physical and chemical procedures to synthesize the composites are labor intensive and inefficient. Our study reveals an one-step wet chemistry method to accomplish fast and controllable production of gold nanoparticle (AuNP) and carbon naotube (CNT) composites. Such a process is sensitive to the surface charge. Especially, when functionalized with carboxyl groups, the CNTs carried negative charges and showed low level association with negatively charged AuNPs. Thermal treatment was employed to decompose the carboxyl groups and render each CNT a charge-free surface thereby achieving a high level AuNP-CNT association. The fabricated glucose sensors demonstrated dependence of their sensitivities to the amount of AuNPs on the CNTs. The enhancement of sensitivity can be attributed to an accelerated electron transfer rate from glucose oxidase Gox to the electrode. The Michaelis-Menten kinetics also indicated improved performance in the glucose sensor made of AuNP-CNTs. Therefore, our research revealed a novel approach to produce metallic nanoparticle and CNT composite for fabricating high performance electrochemical sensors.

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Glucose sensors made of novel carbon nanotube-gold nanoparticle composites. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: BioFactors (Oxford, England)

VOLUME: 30

Page Numbers: 271-7

Journal Abbreviation: Biofactors

ISSN: 0951-6433

DAY: 8

MONTH: 07

YEAR: 2007

Glucose sensors made of novel carbon nanotube-gold nanoparticle composites. Information

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LANGUAGE: eng

NlmUniqueID: 8807441

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Grant and Affiliation Information for Glucose sensors made of novel carbon nanotube-gold nanoparticle composites.

AFFILIATION: Department of Biology, Boston College, Chestnut Hill, MA, USA.

Country: Netherlands

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MEDLINETA: Biofactors

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