期刊
JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES
卷 43, 期 5-6, 页码 156-163出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10826076.2019.1701013
关键词
Adsorption; covalent organic frameworks; quaternary ammonium; ultraviolet-filters
资金
- Natural Science Foundation of Shandong Province [ZR2018MC031]
- National Science Foundation of China [31801624]
Covalent organic frameworks (COFs) show excellent property, such as high porosity and excellent structure stability and were well applied in fields such as catalysis and adsorption, but most of the COFs showed similar structure and thus similar adsorption performance. Modification of simple COFs to enhance its adsorption performance in separation technique is an important issue. In this study, quaternary ammonium groups with long hydrophobic chain were introduced into a simple COF (TpPa-1) for the first time. The positively charged COF (PC-TpPa-1) can form electrostatic interaction and hydrophobic effect with negatively charged analytes, and showed good adsorption performance for ultraviolet-filters (UV filters). Under the optimum conditions, i.e. adsorbent amount 20 mg, pH = 7, 1.0 mL acetonitrile as eluent, the obtained recoveries for all UV filters were in the range of 86.4-96.7%.The developed method was successfully applied to the determination of UV filters from food packaging material migrants with the aid of HPLC as a detector.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据