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Sensors 2015, 15(11), 29419-29433; doi:10.3390/s151129419

NiCu Alloy Nanoparticle-Loaded Carbon Nanofibers for Phenolic Biosensor Applications

1
Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi 214122, China
2
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)
View Full-Text   |   Download PDF [3140 KB, uploaded 20 November 2015]   |  

Abstract

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
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

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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