Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 240, Issue -, Pages 1330-1335Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.08.137
Keywords
2,4-Dichlorophenol; Molecularly imprinted polymer; Graphene oxide; Electrochemical sensor
Funding
- National Natural Science Foundation of China [U140424]
- Science and technology project of education department of Henan province [14A150014]
- Science and technology project of Henan province [152102410006]
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In this work a sensitive and selective electrochemical sensor based on molecularly imprinted polymer/graphene oxide (MIP/GO) modified glassy carbon electrode (GCE) for determination of 2,4-dichlorophenol (2,4-DCP) was developed. MIP was synthesized via precipitation polymerization, using 2,4-DCP as the template, methacrylic acid (MAA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the cross-linking agent in the presence of an initiator, azodiisobutyronitrile (AIBN). Due to the high binding affinity and the pi-pi interaction, the MIP/GO/GCE showed high recognition and electrochemical activity towards 2,4-DCP. The influencing parameters during the experiment were investigated and optimized. Under the optimized conditions, the oxidation peak current and the concentration of 2,4-DCP had a good linear relationship in the range of 0.004-10.0 mu M with a detection limit of 0.5 nM. The proposed sensor was successfully applied for determination of 2,4-DCP in real water sample. (C) 2016 Elsevier B.V. All rights reserved.
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