NDLI: One-pot synthesis of a graphene oxide coated with an imprinted sol–gel for use in electrochemical sensing of paracetamol

Content Provider	Springer Nature Link
Author	Luo, Jing Cong, Jiaojiao Fang, Ruixue Fei, Xiaoma Liu, Xiaoya
Copyright Year	2014
Abstract	A route is described for the preparation of a composite consisting of graphene oxide and a molecularly imprinted sol–gel polymer (GO/MIPs) through one-pot room temperature polymerization in aqueous solution. The material was obtained by mixing graphene oxide with the monomers (phenyltriethoxysilane and tetramethoxysilane) and the template paracetamol, followed by sol–gel copolymerization and extraction. The monomer and template concentrations and the incubation time were optimized. The composite was characterized by FTIR, TGA, XRD, Raman spectroscopy and SEM. It was then deposited as a thin film acting as a molecular recognition element on a glassy carbon electrode to obtain an electrochemical sensor for paracetamol. The electrode displayed an excellent recognition capacity toward paracetamol compared to its analogs. The peak current is linearly proportional to the concentration of paracetamol in the 0.1 μM to 80 μM range, and the detection limit is 20 nM (at an SNR of 3). Hence, this electrode possesses a wider response range and lower detection limit compared to most previously reported electrochemical sensors for paracetamol. It also exhibits excellent stability and has been successfully used to determine paracetamol in tablets and spiked human urine samples. Figure A novel composite of graphene oxide/molecularly imprinted polymer (GO/MIPs) was prepared through one-pot room-temperature sol–gel polymerization in aqueous solution and applied as a molecular recognition element to construct electrochemical sensor for the determination of paracetamol.
Starting Page	1257
Ending Page	1266
Page Count	10
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	181
Issue Number	11-12
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2014-04-02
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Graphene oxide Molecular imprinted polymer Sol–gel Paracetamol Electrochemical sensor Nanochemistry Nanotechnology Characterization and Evaluation of Materials Analytical Chemistry Microengineering
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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