吸附剂
热重分析
复合数
深共晶溶剂
共晶体系
萃取(化学)
固相萃取
材料科学
化学工程
化学
核化学
色谱法
有机化学
吸附
复合材料
合金
工程类
作者
Jiaojiao Meng,Yuzhi Wang,Yigang Zhou,Jing Chen,Xiaoxiao Wei,Rui Ni,Ziwei Liu,Fangting Xu
标识
DOI:10.1007/s00604-019-4040-2
摘要
A cactus-shaped magnetic composite was prepared for solid-phase extraction of RNA. It is composed of the metal organic framework UiO-66-NH2 that was modified with Fe3O4 nanoparticles. The composite was then dispersed in a lactic acid-based deep eutectic solvent (DES, Fe3O4-COOH@UiO-66-NH2@DES). The structures of the sorbents were characterized by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectrometry, vibrating sample magnetometry and thermogravimetric analysis. The extraction performance of sorbents was optimized and the maximum extraction capacity reached 246 mg·g−1. Extraction is shown to mainly rely on chelation interaction, electrostatic interaction, hydrophobic interaction and hydrogen bonding interaction. The sorbent can selectively extract RNA over DNA, bovine hemoglobin and amino acids. Regeneration studies indicated that the sorbent can be re-used (after regenreation with DES) several times without obvious change of the extraction capacity. The successful extraction of RNA from yeast testified the practical application of the sorbent.
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