title: Magnetic nanoparticles and quantum dots co-loaded imprinted matrix for pentachlorophenol.
abstract: In this study, an imprinted silica matrix of pentachlorophenol (PCP) co-loaded with Fe(3)O(4) nanoparticles and ZnS:Mn(2+) quantum dots (QDs) was fabricated. The introduction of Fe(3)O(4) nanoparticles to the imprinted matrix provided an easy way to separate PCP under an external magnetic field. ZnS:Mn(2+) 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 N(2) 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 Fe(3)O(4)-ZnS:Mn(2+) co-loaded MIPs are 101% and 97%, respectively.
authors.affiliation: Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Department of Chemistry, Shandong University, Jinan, 250100 Shandong, PR China.
authors.forename: Min
authors.initials: M
authors.lastname: Yang
authors.forename: Aijuan
authors.initials: A
authors.lastname: Han
authors.forename: Junling
authors.initials: J
authors.lastname: Duan
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Li
authors.forename: Yongchao
authors.initials: Y
authors.lastname: Lai
authors.forename: Jinhua
authors.initials: J
authors.lastname: Zhan
mesh_terms: D000327:Adsorption; D004785:Environmental Pollutants / Q000737:chemistry*; D058185:Magnetite Nanoparticles / Q000737:chemistry*; D008345:Manganese / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D054802:Molecular Imprinting; D010416:Pentachlorophenol / Q000737:chemistry*; D045663:Quantum Dots; D012822:Silicon Dioxide / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry; D017967:Zinc Compounds / Q000737:chemistry
chemical_list: D004785:Environmental Pollutants; D058185:Magnetite Nanoparticles; D013440:Sulfides; D017967:Zinc Compounds; D008345:Manganese; D012822:Silicon Dioxide; D010416:Pentachlorophenol; C031238:zinc sulfide