The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Pyridine-4-thiol( cas:4556-23-4 ) is researched.Quality Control of Pyridine-4-thiol.Li, Kan; Li, Jing-jing; Zhao, Ni; Ma, Ying; Di, Bin published the article 《Removal of tetracycline in sewage and dairy products with high-stable MOF》 about this compound( cas:4556-23-4 ) in Molecules. Keywords: metal organic framework tetracycline adsorption milk yogurt sewage; MOF; adsorption and removal; tetracycline. Let’s learn more about this compound (cas:4556-23-4).
Serious environmental and human health problems caused by the abuse of antibiotics have attracted worldwide concern. Recently, metal-organic frameworks (MOFs) with high porosity have drawn wide attention for their effects in the adsorption and removal of pollutants from complex matrixes. Herein, a high-stable metal organic framework (MOF), i.e., ((ZnCl2)3(L)2·DMF)n, where L=1,3,5-tris((pyridin-4-ylthio)methyl)benzene), MOF 1, was applied to adsorb and remove tetracycline from sewage and dairy products. The results showed that MOF 1 exhibited a strong performance in the adsorption of tetracycline. The effects of initial pH values, adsorbent dose, contact time and ionic strength of the adsorption performance of MOF 1 were investigated. The adsorption kinetics best fit the pseudo-second order model, and the adsorption isotherms matched the Langmuir adsorption model well. It was indicated that both chem. adsorption and phys. adsorption play an important role in the adsorption process, and the adsorption of tetracycline was homogeneous and occurred on a monolayer on the surface of MOF 1. Addnl., the stability of MOF 1 and the details of the adsorption mechanism were also investigated. Thus, this study provides a new candidate for the application of MOFs-based adsorbents in the removal of antibiotics from sewage and dairy products.
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Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts