Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 377, Issue 1-3, Pages 379-385Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2011.01.032
Keywords
Surface molecularly imprinted polymer; Carbon microspheres; Adsorption; Dibenzothiophene; Langmuir isotherm; Lagergren's pseudo second order model
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Funding
- Program for Changjiang Scholar and Innovative Research Team in University [IRT0972]
- National Natural Science Foundation of China [20971094]
- Natural Science Foundation of Shanxi Province [2009011012-4]
- International S&T Co-operation Program [2007DFA50940]
- International S&T Co-operation Program of Shanxi Province [2009081018, 2010081017]
- Shanxi Research Fund for Returned Scholars [2008-31]
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The molecularly imprinted polymer (MIP) on the surface of carbon microspheres (CMSs), which were modified by acid and silylation treatment, was obtained by using dibenzothiophene (DBT) as template, methacrylic acid as functional monomer, ethylene glycol dimethacrylate as cross-linking agent and azoisobutyronitrile as initiator. Field emission scanning electron microscopy, Fourier transformation infrared spectroscopy and thermogravimetry were used to characterize the structure and morphology of the MIP-CMSs. The adsorption isotherm and kinetics of DBT on MIP-CMSs were investigated. The preliminary results show that MIP-CMSs possessed good recognition toward DBT, that is, the adsorption equilibrium time was about 5 h and the equilibrium adsorption amount was 0.595 mmol/g. The mechanism for adsorption of DBT onto MIP-CMSs was found to follow Langmuir isotherm and pseudo second order model. (C) 2011 Elsevier B.V. All rights reserved.
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