超分子印迹聚合物的制备及对水中阿司匹林的吸附
Preparation of Supramolecular Molecularly Imprinted Polymers for Adsorption of Aspirin from Water
仝海娟 1范方方 1仝仲凯 2左卫元 1欧阳辉祥1
作者信息
- 1. 广西城市水环境重点实验室 百色学院化学与环境工程学院,广西百色 533000
- 2. 山西省大同市第五人民医院普通外科科室,山西大同 037000
- 折叠
摘要
以β-环糊精(β-CD)和功能单体4-乙烯基吡啶(4-VP)制备了基于阿司匹林的超分子印迹聚合物β-CD/4-VP-MIP,通过红外光谱(FT-IR)、扫描电镜(SEM)和N2吸附-脱附仪,对所合成β-CD/4-VP-MIP的组成、形貌和比表面积进行了表征,并考察了其对阿司匹林的吸附选择性、等温吸附线及动力学.结果表明:所合成的β-CD/4-VP-MIP具有较大的比表面积和丰富的孔道结构;对阿司匹林的等温吸附过程遵从Langmuir方程,饱和吸附量为42.918 mg/g;吸附动力学遵从准二级动力学方程,吸附速率为0.002 8 g/(mg·min);热力学分析表明,该吸附过程为吸热、自发、熵增过程.
Abstract
Aspirin-based supramolecularly imprinted polymer of β-CD/4-VP-MIP was prepared from β-cyclodextrin(β-CD)and 4-vinylpyridine(4-VP).The composition,morphology and specific surface area ofβ-CD/4-VP-MIP were characterized by fourier transform infrared spectra(FT-IR),transmission electron microscopy(SEM)and N2 adsorption-desorption.The adsorption selectivity,isotherm and kinetics of β-CD/4-VP-MIP for aspirin were investigated and the results showed that β-CD/4-VP-MIP has porous structures and large surface area.Additionally,the aspirin adsorption isothermal obeys the Langmuir model,the maximum adsorption capacity was 42.918 mg/g;the pseudo-second-order kinetic equation is suitable for kinetics date with a rate constant of 0.0028 g/(mg·min);Thermodynamic analysis revealed that the adsorption process is endothermic,spontaneous and entropy increasing.
关键词
超分子印迹聚合物/阿司匹林/β-环糊精/吸附/动力学Key words
supramolecular imprinted polymer/aspirin/β-cyclodextrin/adsorption/kinetics引用本文复制引用
基金项目
国家自然科学基金(21567001)
广西壮族自治区高等学校中青年教师科研基础能力提升项目(2018KY0578)
广西壮族自治区高等学校中青年教师科研基础能力提升项目(2020KY19022)
广西一流学科建设资助项目()
出版年
2024
NETL
NSTL
维普
万方数据