摘要
利用分子印迹技术,以水溶性黄酮芦丁为模板剂与具有专一识别官能团的氯丙基三乙氧基硅烷反应制备出前驱物,然后将前驱物与正硅酸乙酯进行协同水解、凝胶老化和模板剂的洗脱,从而制备出对芦丁具有高效选择性的内置型硅质吸附剂.实验结果表明:该吸附剂具有较高的吸附容量,即使在有与芦丁结构相似的黄酮存在下,对芦丁依然有较高的选择性吸附能力;TEM照片表明该吸附剂具有与印迹分子相匹配的纳米孔洞,而对FTIR光谱分析表明该吸附剂在印迹识别过程有新的化学键生成.
One kind of built-in silica adsorbent, which has high adsorption selectivity to rutin, was synthesized using molecular imprinted technology by the following steps: synthesis of precursor from the reaction between water soluble rutin (as template molecule) and the functional monomer chloropropyhriethoxysilane, 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 to rutin, and good adsorption selectivity to rutin even under the interference of flavone with similar structure. TEM photos suggest that nanocaves corresponding to rutin were formed inside the adsorbent, while FTIR detects that new bond was generated during the recognition process.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2007年第4期411-415,共5页
Journal of Tianjin University(Science and Technology)
基金
国家863计划资助项目(863-715-004-220)
中国博士后科学基金资助项目(413395-0306)
天津大学青年教师基金资助项目(411716)
天津市应用基础研究计划项目
关键词
硅质吸附剂
分子印迹技术
选择性吸附
芦丁
silica adsorbent
molecularly imprinted technology (MIT)
selective adsorption
rutin