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