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Abstract: In this study, an imprinted silica matrix of pentachlorophenol (PCP) co-loaded with Fe3O4 nanoparticles and ZnS:Mn2+ quantum dots (QDs) was fabricated. The introduction of Fe3O4 nanoparticles to the imprinted matrix provided an easy way to separate PCP under an external magnetic field. ZnS:Mn2+ QDs offered a readout signal to monitor the amount of PCP bound to the imprinted matrix and evaluate the efficiency of imprinting. X-ray diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy were used to characterize the imprinted matrix. The low angle X-ray diffraction and N2 adsorption-desorption analysis indicated a periodic mesoporous structure. The as-synthesized imprinted matrix preferred to adsorb PCP rather than the other aromatic compounds like 2,4-dichlorophenoxy acetic acid, 2,4-dichlorophenol and phenol. The recoveries of spiked PCP in spring water and tap water with Fe3O4-ZnS:Mn2+ co-loaded MIPs are 101% and 97%, respectively
Template and target information: pentachlorophenol, PCP
Author keywords: molecular imprinting, Magnetic, fluorescence, Quantum dots, pentachlorophenol