Journal
TALANTA
Volume 120, Issue -, Pages 255-261Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2013.12.001
Keywords
Molecular imprint; Mesoporous silica; Bisphenol A; Solid-phase extraction; Hierarchical structures
Categories
Funding
- National Natural Science Foundation of China [21273057, 21075025]
- Natural Science Foundation of Heilongjiang Province [B200910]
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Improving the site accessibility of molecularly imprinted polymer (MIP) is one of the biggest challenges for application of MIP in solid-phase extraction (SPE). Hierarchically imprinted mesoporous silica polymer was prepared with semicovalently bond imprinting methods based on MCM-41 and SBA-15 mesostructures, aiming to improve the site accessibility of MIP and increase the efficiency of molecularly imprinted-SPE. Characterization and performance tests of the obtained products revealed that molecularly imprinted SBA-15 (MIP-SBA-15) not only retained the mesoporous structure of SBA-15, but also displayed excellent selectivity of MIP to the target molecule. As the MIP-SBA-15 were adopted as the adsorbents of solid-phase extraction for detecting bisphenol A in spiked water samples, the recoveries of spiked samples more than 87%, which reveals that the molecularly imprinted SBA-15 were efficient SPE adsorbents for bisphenol A. (C) 2013 Elsevier B.V. All rights reserved.
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