Selective removal of 2,4-dichlorophenol from contaminated water using non-covalent imprinted microspheres.
A molecularly imprinted polymer (MIP) for selective removal of 2,4-dichlorophenol (2,4-DCP) in water was prepared as microspheres by the reverse microemulsion polymerization method based on the non-covalent interactions between 2,4-DCP, oleic acid, and divinylbenzene in acetonitrile. Microspheres have been characterized by Fourier transform infrared spectrometer (FTIR) and energy dispersive X-ray spectrometer (EDS) studies with evidence of 2,4-DCP linkage in polymer particles and scanning electron microscopy (SEM) to study their morphological properties. The proper adsorption and selective recognition ability of the MIP were studied by an equilibrium-adsorption method. The MIP showed outstanding affinity towards 2,4-DCP in aqueous solution and the optimum pH value for binding has been found around the neutral range. The molecular recognition of 2,4-DCP was analyzed in detail by using molecular modeling software. In addition, by investigating the variation in the adsorption ability of the MIP, it clearly showed excellent reproducibility.
Li
Ying
Y
Department of Chemistry, Harbin Institute of Technology, Harbin 150090, China.
Li
Xin
X
Li
Yuqi
Y
Qi
Jingyao
J
Bian
Jiang
J
Yuan
Yixing
Y
D000327:Adsorption; D002733:Chlorophenols / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D008863:Microspheres; D008958:Models, Molecular; D054802:Molecular Imprinting / Q000379:methods; D010575:Pesticides / Q000032:analysis; D017550:Spectroscopy, Fourier Transform Infrared; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis; D018508:Water Purification / Q000379:methods*
D002733:Chlorophenols; D010575:Pesticides; D014874:Water Pollutants, Chemical; D014867:Water; C004762:2,4-dichlorophenol