摘要
为研究亚胺类共价有机框架(covalent organic framework,COF)的微观结构、表面性质及其对雌二醇的吸附特性,以1,3,5-三(4-氨苯基)苯(1,3,5-tris(4-aminophenyl)benzene,TAPB)和1,3,5-苯三甲醛(1,3,5-benzotrialdehyde,BTC)为单体,在室温条件下合成了亚胺类共价有机框架材料TAPB-BTC-COF,优化合成中催化剂冰醋酸的用量。用傅里叶红外光谱(Fourier transform infrared spectroscopy,FT-IR)、X射线衍射(X-ray powder diffraction,XRD)、扫描电子显微镜(scanning electron microscope,SEM)、热重分析(thermogravimetric analysis,TGA)、N 2等温吸附-脱附曲线等手段对合成的TABP-BTC-COF材料进行了表征,并采用物理涂覆法制备TABP-BTC-COF涂层搅拌棒。结果表明,催化剂的用量会影响COF的晶型;TABP-BTC-COF涂层搅拌棒的吸附动力学过程符合准二级吸附动力学(R 2=0.9714),属于化学吸附。该研究为TAPB-BTC-COF涂层搅拌棒对环境中雌二醇的检测应用提供了一定的理论依据。
In order to study the microstructure and surface properties of imine covalent organic framework(COF)and its adsorption properties on estradiol,TAPB-BTC-COF was synthesized using 1,3,5-tris(4-aminophenyl)benzene(TAPB)and 1,3,5-benzotrialdehyde(BTC)as monomers under room temperature conditions,and optimized synthesis of TAPB-BTC-COF.The imine covalent organic framework material TAPB-BTC-COF was synthesized at room temperature to optimize the amount of catalyst glacial acetic acid in the synthesis.The synthesized TABP-BTC-COF materials were analyzed by Fourier transform infrared spectroscopy(FT-IR),X-ray powder diffraction(XRD),scanning electron microscope(SEM),thermogravimetric analysis(TGA),and N 2 adsorption-desorption isotherm.They were used to characterize the synthesized TABP-BTC-COF materials,and the TABP-BTC-COF coated stirring rods were prepared by physical coating method.The results showed that the amount of catalyst affects the crystalline shape of the imine COF;the adsorption kinetics process of the TAPB-BTC-COF-coated stirring rods conformed to the quasi-secondary adsorption kinetics(R 2=0.9714),which was chemisorption.The study provides some theoretical basis for the application of TAPB-BTC-COF coated stir bar in the detection of estradiol in the environment.
作者
付盈莹
甘宇
段正超
王联芝
FU Yingying;GAN Yu;DUAN Zhengchao;WANG Lianzhi(College of Chemistry and Environmental Engineering,Hubei Minzu University,Enshi 445000,China)
出处
《湖北民族大学学报（自然科学版）》
CAS
2024年第4期544-550,共7页
Journal of Hubei Minzu University:Natural Science Edition
基金
国家自然科学基金项目(21267009,21262011)
湖北民族大学研究生科研创新项目(MYK2024050)。
关键词
搅拌棒吸附萃取
共价有机框架材料
室温法合成
雌二醇
吸附动力学
高效液相色谱
stir bar sorptive extraction technique
covalent organic framework
room temperature synthesis
estradiol
adsorption kinetics
high performance liquid chromatography
作者简介
第一作者:付盈莹(2000-),女,硕士研究生,主要从事分析化学的研究;通信作者:王联芝(1974-),女,博士,副教授,主要从事分析化学的研究。
