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Sensors 2015, 15(11), 29419-29433;

NiCu Alloy Nanoparticle-Loaded Carbon Nanofibers for Phenolic Biosensor Applications

Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, NC 27695-8301, USA
Authors to whom correspondence should be addressed.
Academic Editors: Yu Lei, Ashutosh Tiwari and Hongyun Liu
Received: 19 August 2015 / Revised: 21 October 2015 / Accepted: 13 November 2015 / Published: 20 November 2015
(This article belongs to the Special Issue Microbial and Enzymatic Biosensors)
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NiCu alloy nanoparticle-loaded carbon nanofibers (NiCuCNFs) were fabricated by a combination of electrospinning and carbonization methods. A series of characterizations, including SEM, TEM and XRD, were employed to study the NiCuCNFs. The as-prepared NiCuCNFs were then mixed with laccase (Lac) and Nafion to form a novel biosensor. NiCuCNFs successfully achieved the direct electron transfer of Lac. Cyclic voltammetry and linear sweep voltammetry were used to study the electrochemical properties of the biosensor. The finally prepared biosensor showed favorable electrocatalytic effects toward hydroquinone. The detection limit was 90 nM (S/N = 3), the sensitivity was 1.5 µA µM−1, the detection linear range was 4 × 10−7–2.37 × 10−6 M. In addition, this biosensor exhibited satisfactory repeatability, reproducibility, anti-interference properties and stability. Besides, the sensor achieved the detection of hydroquinone in lake water. View Full-Text
Keywords: carbon nanofibers; NiCu alloy nanoparticles; electrospinning; laccase; phenolic biosensor carbon nanofibers; NiCu alloy nanoparticles; electrospinning; laccase; phenolic biosensor

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Li, D.; Lv, P.; Zhu, J.; Lu, Y.; Chen, C.; Zhang, X.; Wei, Q. NiCu Alloy Nanoparticle-Loaded Carbon Nanofibers for Phenolic Biosensor Applications. Sensors 2015, 15, 29419-29433.

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