Flexible fiber-shaped non-enzymatic sensors with a graphene-metal heterostructure based on graphene fibres decorated with gold nanosheets

Fibre shaped microelectrodes have shown advantages in wearable sensors and implantable sensors for real-time monitoring human health. Herein, we report a novel graphene/gold nanosheet composite fibre (GF/AuNS) prepared by electrochemical deposition, which was used as a fibre-shaped microelectrode no...

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Bibliographic Details
Published in:Carbon (New York) 2018-09, Vol.136, p.329-336
Main Authors: Peng, Yu, Lin, Deqing, Justin Gooding, J., Xue, Yuhua, Dai, Liming
Format: Article
Language:English
Subjects:
Electrochemical analysis
Electronic implants
Fiber reinforced composites
Glucose
Gold
Graphene
Graphite
Heterostructures
Hydrogen peroxide
Microelectrodes
Nanoparticles
Nanosheets
Sensors
Wear resistance
Wearable technology
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Summary:Fibre shaped microelectrodes have shown advantages in wearable sensors and implantable sensors for real-time monitoring human health. Herein, we report a novel graphene/gold nanosheet composite fibre (GF/AuNS) prepared by electrochemical deposition, which was used as a fibre-shaped microelectrode non-enzymatic sensor for detection of hydrogen dioxide and glucose. The GF/AuNS microelectrode exhibited excellent performance for the electrochemical detection of H2O2 and glucose with detection limits of 1.62 and 1.15 μM and sensitivities of 378.1 and 1045.9 μA mM−1 •cm−2, respectively. This flexible fibre shaped microelectrode sensor provides a useful tool for portable and fast detection of H2O2 and glucose, showing great potential as wearable sensors. Flexible fiber-shaped non-enzymatic sensors with a graphene-metal heterostructure based on graphene fibers decorated with gold nanoparticles were developed for sensitive and selective detection of H2O2 and glucose. [Display omitted]
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2018.05.004