Synthesis of silica adsorbent and its selective separation for flavone |
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Authors: | Yuqing Zhang Yahui Zhang Zhen Qin Zhenrong Ma |
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Institution: | (1) School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China |
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Abstract: | One kind of built-in silica adsorbent, which has high adsorption selectivity to rutin, was synthesized using molecular imprinting
technology by the following steps: synthesis of precursor from the reaction between water soluble rutin (as template molecule)
and the functional monomer chloropropyltriethoxysilane, co-hydrolysis of the precursor and tetraethoxysilane (TEOS), sol-gel
aging process, and removal of template molecules. The results of adsorption experiment show that this adsorbent has a high
adsorption capacity for rutin, and good adsorption selectivity towards rutin even under the interference of a flavone with
a similar structure. TEM photos suggest that nanocaves corresponding to rutin were formed inside the adsorbent while FTIR
spectra indicate that new bond was generated during the recognition process.
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Translated from Journal of Tianjin University, 2007, 40(4): 411–415 译自: 天津大学学报] |
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Keywords: | silica adsorbent molecular imprinted technology (MIT) selective adsorption rutin |
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