期刊论文

联苯甲酰桥联β-环糊精吸附U(VI)的动力学和热力学

Liu Hui-Jun

中文

物理化学学报

1000-6818

2016

32

8

1933-1940

10.3866/PKU.WHXB201604212

(11375084):国家自然科学基金 (CX2015B399):湖南省研究生科研创新项目 (11375084):The project was supported by the National Natural Science Foundation of China (CX2015B399):Hunan Provincial Innovation Foundation for Postgraduate,China

本校为第一且通讯机构

β-环糊精与对甲苯磺酰氯在低温碱性溶液中反应合成6-对甲苯磺酰酯-β-环糊精，并利用红外光谱和核磁共振氢谱对其进行表征；联苯甲酰与6-对甲苯磺酰酯-β-环糊精以摩尔比为1 ： 2 反应合成一种新型的联苯甲酰桥联β-环糊精（BB β-CD）材料，并采用紫外可见分光光度法对其合成机理以及BB β-CD和联苯甲酰对U（VI）的吸附行为进行研究；同时采用扫描电镜对材料吸附U（VI）前后的外貌形态进行表征。通过间歇吸附法考察pH、反应时间、温度以及干扰离子等因素对吸附过程的影响。结果表明，相比联苯甲酰，BB β-CD能更有效地吸附U（VI），在pH = 4.5，反应时间为60min条件下，最大吸附量为12.16 mg·...

Sulfated β-cyclodextrin (β-CD) was prepared by the reaction of β-CD with p-toluenesulfonyl chloride at low temperature in aqueous sodium hydroxide. The product was analyzed by Fourier transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (1H NMR). The novel benzil-bridged β-CD (BB β-CD) was acquired by the reaction of benzil with sulfated β-CD at a molar ratio of 1: 2. UV spectrophotometry was used to study the synthetic mechanism of BB β-CD and benzil and their adsorption onto U(VI). Scanning electron microscopy (...