Hierarchically imprinted mesoporous silica polymer: An efficient solid-phase extractant for bisphenol A

作者：Cheng Wenjing; Ma Haotian; Zhang Li; Wang Yan^*

来源：Talanta, 2014, 120: 255-261.

DOI：10.1016/j.talanta.2013.12.001

• Molecular imprint
• Mesoporous silica
• Bisphenol A
• Solid-phase extraction
• Hierarchical structures

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.

• 出版日期2014-3
• 单位哈尔滨工业大学