应用化学2019，Vol.36Issue(1)：24-33,10.DOI:10.11944/j.issn.1000-0518.2019.01.180054
基于甲氧基柱[5]芳烃的聚丙烯酸酯有机膜对对硝基苯衍生物的吸附行为
Adsorption of p-Nitrobenzene Derivatives by Polyacrylate Organic Membranes Based on 1, 4-Dimethoxy Pillar [5] arenes
夏冬冬 1侯亚奇 1潘倩霞 1何子慧 1杨建哲 1汪海波1
作者信息
- 1. 南京工业大学化学与分子工程学院,南京 211816
- 折叠
摘要
Abstract
Pillararenes are columnar macrocyclic molecules that are different from crown ethers, calixarenes, and cucurbiturils, and have unique electron-rich cavities and modifiable mouth cavities. They can contain a variety of organic pollutants, and have broad application prospects for the adsorption and removal of organic pollutants. In this paper, the complexation of p-nitrobenzene derivatives with 1, 4-dimethoxy pillar [5] arenes (MeP5A) was studied by nuclear magnetic resonance and ultraviolet titration, and the inclusion constant was determined. On this basis, MeP5A was physically mixed into polyacrylate (PA) emulsion to prepare the MeP5A/polyacrylate (MeP5A/PA) blending emulsion. Then, the blending emulsion was made into the MeP5A/PA nanofiber membrane by the electrospinning technology. The structure and morphology of the MeP5A/PA nanofiber membrane were characterized by infrared spectroscopy and scanning electron microscopy. The Me P5A/PA nanofiber membrane was used for adsorption of four kinds of p-nitrobenzene derivatives. The results reveal that p-nitrophenylacetonitrile holds the strongest complexation intensity with MeP5A[Ka= (6. 0 ± 0. 3) × 102L/mol]. The introduction of MeP5A into the PA nanofiber membrane increases the adsorption capacity but does not change the fibrous morphology. The optimum adsorption equilibrium time of Me P5A/PA nanofiber membranes is 2 h, and the higher the content of MeP5A in MeP5A/PA nanofiber membranes, the larger the adsorption capacity. When the concentration of MeP5A in the adsorbed solution reaches 4 mmol/L (the corresponding Me P5 A mole in the membrane is 1. 4 × 10-2mmol) , the adsorption equilibrium is reached. Then the content of MeP5A continues to increase, and the adsorption capacity does not change much.关键词
甲氧基柱[5]芳烃/包结常数/纳米纤维膜/吸附Key words
dimethoxy pillar[5]arenes/inclusion constants/nanofiber membrane/adsorption分类
化学化工引用本文复制引用
夏冬冬,侯亚奇,潘倩霞,何子慧,杨建哲,汪海波..基于甲氧基柱[5]芳烃的聚丙烯酸酯有机膜对对硝基苯衍生物的吸附行为[J].应用化学,2019,36(1):24-33,10.
