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| Recognition of Tryptophan Enantiomers with TiO2 Nanoparticles |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:sol-gel molecular imprinting L-tryptophan titanium dioxide nanoparticles |
| Author | Institution |
| 陈智栋，何莹，申屠超，张静 |
1.常州大学化学化工学院;2.浙江树人大学生物与环境工程学院 |
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| Abstract: |
| A novel imprinted TiO2 nanoparticles were synthesized via a sol-gel process using L-tryptophan(L-Trp) as temple molecules and TiO2 nanoparticles as imprinted matrix.The imprinted TiO2 nanoparticles were investigated by scanning electron microscopy and infrared spectroscopy.The result indicated that L-Trp was imprinted into TiO2 nanoparticles successfully.Appropriate template cavities in TiO2 nanoparticles were formed after the template molecules were removed by treatment with 1% ammonia solution.Fluorescence spectrophotometry was used to study the separation abilities of L-Trp and D-tryptophan(D-Trp) in the imprinted TiO2 nanoparticles.The results showed that imprinted TiO2 nanoparticles had a high selectivity to L-Trp,and the separation factor was 2.42 under the optimum molar ratio of L-Trp to titanium precursor(1∶0.2) in pH 6.0 solution. |
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