苯并噻唑基共价有机框架材料的制备及其对水中铜离子的检测和吸附  

Preparation of Benzothiazolyl Covalent Organic Framework Material and Its Detection and Adsorption of Copper Ions in Water

作　　者：周壮壮 麻丽媛 左佳灵 丁镠 李笑 马雪浩 金洗郎[2] ZHOU Zhuang-zhuang;MA Li-yuan;ZUO Jia-ling;DING Liu;LI Xiao;MA Xue-hao;JIN Xi-lang(School of Computer Science&Technology,Xi′an University of Posts and Telecommunications,Xi′an 710021,China;School of Materials and Chemical Engineering,Xi′an Technological University,Xi′an 710021,China;School of Materials Science and Engineering,Shaanxi University of Technology,Hanzhong 723001,China)

机构地区：[1]西安邮电大学计算机学院,陕西西安710021 [2]西安工业大学材料与化工学院,陕西西安710021 [3]陕西理工大学材料科学与工程学院,陕西汉中723001

出　　处：《化学试剂》2024年第10期14-22,共9页Chemical Reagents

基　　金：陕西省自然科学基金项目(2023-JC-YB-087);陕西省创新能力支撑计划项目(2022KJXX-88);陕西省科技创新先导计划项目(2020QFY07-05);陕西省大学生创新创业训练计划项目(S202210702131)。

摘　　要：铜(Cu)元素对人体起着至关重要的作用,水中铜离子的检测是环境监测的重要内容。以4,4′,4″-(1,3,5-三嗪-2,4,6-三基)三苯甲醛和2,5-二氨基-1,4-苯二硫酚二盐酸盐为原料通过两步法合成了一种双功能共价有机框架材料(COF-TFPT-DBD)。COF-TFPT-DBD具有优良的物理化学稳定性、较大的比表面积(382.91 m^(2)/g)以及优异的荧光性能。COF-TFPT-DBD对Cu^(2+)具有良好的选择性和灵敏度,在10~40μmol/L浓度范围内呈现良好的线性关系(R^(2)=0.988),较低的检测限(250 nmol/L)。此外,在室温条件下对Cu^(2+)的最大吸附量达到152 mg/g(pH 7),且可以循环使用3次以上。X射线光电子能谱和傅里叶红外光谱证实了COF-TFPT-DBD中功能单元与Cu^(2+)之间的相互作用。这些结果表明,该共价有机框架材料在水中铜离子的检测和高效富集方面具有潜在的应用前景。Copper(Cu)element plays a vital role in human body,and the detection of copper ion(Cu^(2+))in water is an important part of environmental monitoring.A bifunctional covalent organic framework material(COF-TFPT-DBD)was synthesized via a two-step method from 4,4′,4″-(1,3,5-Triazine-2,4,6-triyl)tribenzaldehyde and 2,5-diamino-1,4-phenyldisulfide dihydrochloride.COF-TFPT-DBD had good physicochemical stability,a large specific surface area(382.91 m 2/g)and excellent fluorescence properties.These features endowed COF-TFPT-DBD with good selectivity and sensitivity to Cu^(2+),accompanied with a low detection limit of 250 nmol/L and a linear relationship(R 2=0.988)in the concentration range of 10~40μmol/L.Additionally,the maximum adsorption capacity for Cu^(2+)reached 152 mg/g(pH 7)at room temperature,and COF-TFPT-DBD could be reused more than three times.X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy further confirmed the interactions between Cu^(2+)and functional units in COF-TFPT-DBD.These results indicated that covalent organic framework materials have potential applications in the detection and high-efficiency enrichment of Cu^(2+)in water.

关 键 词：共价有机框架 苯并噻唑 铜离子 识别 吸附 循环 

分 类 号：X52[环境科学与工程—环境工程]