Synthesizing Metal–Organic Framework UiO-66 Based on Polyethylene Terephthalate Wastes in MW Fields for Removing the Food Dye Tartrazine from Aqueous Solutions via Adsorption

期刊论文
发表日期：

2024年12月1日

查看全文

V. V. Vergun,
M. D. Bedenyapina,
S. A. Kulaishin,
V. V. Chernyshev,
O. P. Tkachenko,
V. D. Nissenbaum,
V. I. Isaeva

摘要

Abstract

A PET-UiO-66 sample of metal-organic framework UiO-66 (Zr₆O₄(OH)₄bdc, bdc = benzene-1,4-dicarboxylate/terephthalate), a promising adsorbent of persistent organic pollutants from aqueous media, is prepared using an original procedure assisted by MW activation of the reaction mass under atmospheric pressure following a one-step approach in the nontraditional “green” solvent triethylene glycol. The PET-UiO-66 material is synthesized using polymer waste (polyethylene terephthalate (PET)) as an organic linker (terephthalic or benzene-1,4-dicarboxylic acid, H₂bdc) to create the framework. Its adsorption activity is studied for the first time in the adsorption removal of the food dye tartrazine (Е-102) from aqueous media. It is established that the kinetics of adsorption is obeyed to a pseudo-second order, and its thermodynamics fits the Langmuir model.