大学化学 >> 2023, Vol. 38 >> Issue (8): 156-163.doi: 10.3866/PKU.DXHX202208016

化学实验 上一篇    下一篇

金属有机框架材料MOF-5的合成及其染料吸附性能测试

杨雪苹(), 张思贤, 赵旭芃, 沙贝   

  • 收稿日期:2022-08-02 录用日期:2022-10-27 发布日期:2022-11-14
  • 通讯作者: 杨雪苹 E-mail:yangxueping@hit.edu.cn
  • 基金资助:
    2022年教育部产学合作协同育人项目(化学综合创新实验课程混合式教学研究)

Synthesis of Metal-Organic Frame Material MOF-5 and Testing of Its Dye Adsorption Properties

Xueping Yang(), Sixian Zhang, Xupeng Zhao, Bei Sha   

  • Received:2022-08-02 Accepted:2022-10-27 Published:2022-11-14
  • Contact: Xueping Yang E-mail:yangxueping@hit.edu.cn

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摘要：

本文描述了以配位化学为知识背景，以绿色化学为核心理念的MOF-5合成及其性能测试实验。实验采用化学合成法，以二水醋酸锌为原料，在有机胺去质子化作用下与对苯二甲酸自组装得到产物。利用红外光谱分析、热重分析(TGA)、粉末X射线衍射(PXRD)表征了产物纯度、结构与稳定性，分光光度计测定了产物对常见染料的吸附性能。通过该实验的学习，学生能强化配位化学理论知识的理解，掌握大型仪器设备的使用，理解吸附原理，树立爱护环境、关爱地球的绿色发展理念。本实验反应条件温和，产率、原子利用率高，绿色无污染，教学安排节奏紧凑，非常适合作为结构化学、物理化学等课程的实验项目。

关键词: 金属有机框架材料, 配位化学, 染料吸附

Abstract:

This paper describes an experiment for synthesizing MOF-5 using the principles of coordination chemistry and green chemistry. Zinc acetate dihydrate was used as the starting material, and the product was self-assembled with terephthalic acid by deprotonation of the organic amine. The purity, structure, and stability of the product were characterized by infrared spectroscopy, thermogravimetric analysis (TGA), and powder X-ray diffraction (PXRD). The adsorption properties of the product with common dyes were studied by UV-Vis spectrometry. By studying and conducting this experiment, students can strengthen their understanding of coordination chemistry theory, master the use of large-scale instruments and equipment, master the adsorption principle, and gain an understanding of green chemistry regarding caring for the environment. This experiment has mild reaction conditions, high yield, stoichiometric chemistry, and green chemistry and is pollution-free. It allows for a compact teaching schedule, which is very suitable for teaching experiments in structural chemistry, physical chemistry, and other courses.

Key words: Metal-organic frameworks, Coordination chemistry, Dye adsorption