Microchimica Acta

, 185:208 | Cite as

Magnetic nanoparticles coated with a molecularly imprinted polymer doped with manganese-doped ZnS quantum dots for the determination of 2,4,6-trichlorophenol

Original Paper
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Abstract

The authors describe a multifunctional magnetic molecularly imprinted phosphorescent nanoparticle probe for the selective determination of 2,4,6-trichlorophenol (2,4,6-TCP). The probe consists of a magnetite (Fe3O4) core that is coated with a molecularly imprinted polymer doped with Mn-doped ZnS quantum dots (QDs). The MIP was obtained by copolymerization of acrylamide, ethylene glycol dimethacrylate, and 2,4,6-TCP. The resulting nanoprobe shows strong phosphorescence (with excitation/emission peaks at 320/594 nm) due to the presence of the QDs, good magnetism, and high selectivity for 2,4,6-TCP. Under optimal detection condition, response is linear in the 0.1–30 μmol L−1 2,4,6-TCP concentration range. The imprinting factor is 8.84, and the detection limit is 35 nmol L−1. The method was successfully applied to the determination of 2,4,6-TCP in spiked river water and waste water.

Graphical abstract

Schematic of a multifunctional phosphorescent probe for 2,4,6-trichlorophenol. It consists of a magnetic core coated with a molecularly imprinted polymer shell containing Mn(II) doped ZnS quantum dots whose room-temperature phosphorescence is quenched by 2,4,6-trichlorophenol.

Keywords

Molecular imprinting Precipitation polymerization Room temperature phosphorescence Composite material Quenching Stern-Volmer plot Selective recognition Chlorophenols 

Notes

Acknowledgments

This research has been supported by the National Postdoctoral Science Foundation (No. 2017 M610618), Fundamental Research Funds for the Central Universities of Chang’an University (No. 310829173601, No. 310829172002, No. 310829171004, No. 310829171003, No. 310829161013).

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Supplementary material

604_2018_2742_MOESM1_ESM.doc (132 kb)
ESM 1 (DOC 131 kb)

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of EducationChang’an UniversityXi’anChina
  2. 2.School of Environmental Science and EngineeringChang’an UniversityXi’anChina

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