Journal
BIOSENSORS & BIOELECTRONICS
Volume 86, Issue -, Pages 62-67Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2016.06.034
Keywords
Parachlorophenol; Electrochemical sensor; Hollow carbon sphere; Graphene; Nanomaterial
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Funding
- National Natural Science Foundation of China [21405062, 31200317]
- Opening Project of State Key Laboratory of Chemo/Biosensing and Chemometrics of Hunan University [2014012]
- China Postdoctoral Science Foundation
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Collaborative Innovation Center of Technology and Material of Water Treatment
- Scientific Research Foundation for the Talents in Jiangsu University [13JDG091]
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Owing to awfully harmful to the environment and human health, the qualitative and quantitative determination of parachlorophenol (PCP) is of great significance. In this paper, by using silica@polydopamine as template, nitrogen-doped hollow carbon spheres wrapped with reduced graphene oxide (NHCNS@RG) nanostructure was prepared successfully via a self-assembly approach due to the electrostatic interaction, and the obtained NHCNS@RG could exhibit the unique properties of NHCNS and RG: the NHCNS could impede the aggregation tendency of RG and possess high electrocatalytic activity; the RG enlarges the contacting area and offers many area-normalized edge-plane structures and active sites. Scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, X-ray diffraction and electrochemical method were used to characterize the morphology and structure of NHCNS@RG. Then, the NHCNS@RG hybrids were applied for the electrochemical sensing of PCP, under the optimized conditions, the detection limit of PCP obtained in this work is 0.01 mu M and the linear range is 0.033-8.00 mu M. (C) 2016 Elsevier B.V. All rights reserved.
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