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Spectrochim Acta A Mol Biomol Spectrosc. 2019 May 11;222:117116. doi: 10.1016/j.saa.2019.05.021. [Epub ahead of print]

High-sensitive imprinted membranes based on surface-enhanced Raman scattering for selective detection of antibiotics in water.

Author information

1
College of Physics, Jilin Normal University, Siping 136000, China.
2
College of Chemistry, Jilin Normal University, Siping 136000, China.
3
Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China.
4
Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; College of Environmental Science and Engineering, Jilin Normal University, Siping 136000, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China.
5
Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. Electronic address: jlnuyys@163.com.
6
Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, China; College of Environmental Science and Engineering, Jilin Normal University, Siping 136000, China; Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China. Electronic address: jlsdlhj@163.com.

Abstract

Poly(vinylidene fluoride) (PVDF) is known as one of the widely used membrane separation materials with excellent physical and chemical properties. In this work, we combine surface-enhanced Raman scattering (SERS) detection technology, membrane separation technology and molecular imprinting technology (MIT) to improve sensitivity and selectivity for selective detection of the enrofloxacin hydrochloride in water. In this investigation, PVDF membranes were used as the support materials and different experiment parameters were investigated to obtain the best property. Meanwhile, the Ag nanoparticles (Ag NPs) modified by 3-methacryloxypropyltrimethoxysilane (KH-570) were used as the SERS substrates and they were uniformly dispersed on the surface of the membrane. Finally, Ag-based SERS imprinted membranes (ASIMs) with specific recognition property were successfully prepared with enrofloxacin hydrochloride as the template molecule, acrylamide (AM) as the functional monomer, ethylene glycol dimethacrylate (EGDMA) as the cross-linker agent and 2,2'-azobis(2-methylpropionitrile) (AIBN) as the initiator by a facile and versatile precipitation polymerization strategy. Under the optimal condition, it was presented good linear relationship (R2 = 0.994) between the Raman signal (at 1390.8 cm-1) and the concentration (10-3 mol·L-1-10-7 mol·L-1) of the templates, and the limit of detection was determined as 10-7 mol·L-1. The morphology and characters were investigated and the results proved that the SERS imprinted membranes could be used into the selective detection of antibiotics and it provided a novel approach of antibiotics detection.

KEYWORDS:

Antibiotics; Molecular imprinted membranes; Selective detection; Surface-enhanced Raman scattering

PMID:
31181508
DOI:
10.1016/j.saa.2019.05.021

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