Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 244, Issue -, Pages 750-757Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2012.11.003
Keywords
Molecularly imprinted polymer; Fluoroquinolones; Selective removal; Antibiotics; Nanoparticles
Categories
Funding
- National Natural Science Foundation of China [20907004]
- Opening Foundation of Key Laboratory of Ecological Geochemistry
- Chinese Academy of Geological Sciences [2011CSJ06]
- Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollutiob Control
- Nanjing University of Information Science and Technology [AEMPC201113]
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In this study, novel molecularly imprinted polymer nanoparticles (nanoMCN@MIPs) were prepared by covalent grafting of ofloxacin-imprinted polymer onto the surface of mesoporous carbon nanopartides (MCNs). SEM analyses indicated that the prepared nanoMCN@MIPs were almost uniform, and their geometrical mean diameter was about 230 nm. The sorption behaviors of the nanoMCN@MIPs including sorption kinetics and isotherms, effect of pH, ionic strength, and cross-reactivity were investigated in detail. The adsorption capacity of the nanoparticles for ofloxacin was 40.98 mg/g, with a electivity factor of 2,6 compared to the nonimprinted polymer nanoparticles (nanoMCN@NIPs). The feasibility of removing fluoroquinolone antibiotics (FQs) from environmental waters with the nanoMCN@MIPs was demonstrated using sea water spiked with six typical FQs (ofloxacin, gatifloxacin, balofloxcacin, enrofloxacin, norfloxacin and sarafloxacin). The nanoMCN@MIPs could be reused at least five times with removal efficiency more than 90% except for norfloxacin. (C) 2012 Elsevier B.V. All rights reserved.
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