Effect of the supramolecular material constructed by organic cations and AgI as a catalyst for tetracycline treatment

Abstract

As a class of materials with novel structures and good functionality, supramolecular compounds are frequently used for photocatalytic degradation of organic pollutants. On this basis, three new supramolecular materials {[L1]·[Ag5I8]}n (1), {[(L2)·(Ag5I8)]·DMF}n (2) and {[L3]·[Ag6I9]}n (3) were synthesized by solution volatilization reaction of three cationic templates 1,3,5-Tris(diethylaminomethyl)-2,4,6-Trimethylphenyl bromide (L1), 1,3,5-Tris(trimethylaminomethyl)-phenyl bromide (L2) and 1,3,5-Tris(1-methylimidazolylmethyl)-2,4,6-trimethylphenyl bromide (L3) with AgI at room temperature, respectively. Compounds 1–3 were characterized by elemental analysis, infrared spectroscopy, UV–vis absorption spectroscopy, and thermometry. The results of single crystal X-ray diffraction analysis show that compounds 1–3 are anion polymers with multinuclear building blocks. As a catalyst, compound 1/H2O2 has a good degradation effect on tetracycline (TC) under visible light irradiation. The adsorption dynamics are best fit by quasi-first order models.