Study on preparation of a vovel silica adsorbent and its selective separation applied to genistein

Brazilian Journal of Chemical Engineering

Yuqing Zhang¹  Yahui Zhang¹  Hongliu Zhang¹ 

[1] ,Tianjin University School of Chemical Engineering and Technology Tianjin,China

关键词: Silica adsorbent;    Selective separation;   

DOI  :  10.1590/S0104-66322008000100020

来源: SciELO

【 摘 要 】

In order to selectively separate genistein from its crude solution, a novel silica adsorbent was prepared using genistein as the template molecule, gamma-aminopropylthriethoxysilane as the functional monomer and tetraethyl orthosilicate as the cross-linker. It was analyzed by the BET, FTIR, TEM characteristics, the static adsorption experiment, and selective adsorption experiment. The results show that the silica adsorbent has high specific area, special selectivity and high adsorption capacity for genistein. It can recognize and bind genistein in aqueous solution, and lots of nanopores distribute on its surface uniformly. It is concluded that both the shape and size of the recognition sites matching the template molecule result in the performance of this adsorbent to bind genistein and that there are strong ionic and hydrogen bond attractions between the phenolic hydroxyl and the -NH2.

【 授权许可】

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