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Reference type: Journal
Authors: Li HJ, Wang XN, Wang ZR, Wang Y, Dai JD, Gao L, Wei MB, Yan YS, Li CX
Article Title: A polydopamine-based molecularly imprinted polymer on nanoparticles of type SiO2@rGO@Ag for the detection of λ-cyhalothrin via SERS.
Publication date: 2018
Journal: Microchimica Acta
Volume: 185
Issue: (3)
Page numbers: 193.
DOI: 10.1007/s00604-017-2604-6

Abstract: A new method is described for the determination of the pesticide λ-cyhalothrin (LC). It combines SERS detection with molecular imprinting and largely improves selectivity. A multilayer surface imprinted nanocomposite was synthesized in two steps on a nanostructure of type SiO2@rGO@Ag acting as a substrates. Firstly, the surface of the SiO2@rGO@Ag composite was modified with self-polymerized dopamine. Secondly, surface-initiated polymerization was carried out to prepare a molecularly imprinted polymer (MIP) using LC as the template. The use of this SiO2@rGO@Ag-MIP allows for excellent SERS based detection and has high selectivity for LC. The Raman intensity and LC concentration present perfect linear relationship between 10-5 to 10-9 mol L-1 and the detection limit is 3.8 x 10-10 mol L-1. All the procedures are conducted in aqueous or ethanol solution
Template and target information: λ-cyhalothrin, LC
Author keywords: surface enhanced Raman scattering, Molecularly imprinted polymers, Bioinspired nanocomposite synthesis, selective detection, pesticide, Ultratrace detection


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