Thiadiazol ligand-based laccase-like nanozymes with a high Cu ratio for efficient removal of tetracyclines through polymerization.

J Hazard Mater

Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, College of New Energy and Environment, Jilin University, Changchun 130021, PR China; Jilin Provincial Key Laboratory of Water Resources and Water Environment, College of New Energy and Environment, Jilin University, Changchun 130021, PR China. Electronic address:

Published: October 2024

AI Article Synopsis

  • - A new water treatment technology focuses on using polymerization to convert organic pollutants into polymers, which helps remove contaminants efficiently while producing low CO emissions.
  • - Researchers developed a laccase-mimic nanozyme called Cu-ATZ, which shows improved stability and resistance compared to natural laccase, allowing for broader applications, especially in removing tetracyclines.
  • - Testing the Cu-ATZ on water contaminated with tetracyclines significantly reduced the chemical oxygen demand (COD) by over 80%, demonstrating its effectiveness in treating antibiotic pollution in water bodies.

Article Abstract

A promising water treatment technology involves inducing the polymerization of organic pollutants to form corresponding polymers, enabling rapid, efficient, and low CO emission removal of these pollutants. However, there is currently limited research on utilizing polymerization treatment technology for removing tetracyclines from water. In this study, we synthesized a laccase-mimic nanozyme (Cu-ATZ) with a high Cu ratio using 2-amino-1,3,4-thiadiazole as a ligand inspired by natural laccase. The Cu-ATZ exhibited enhanced resistance to more severe application conditions and improved stability compared to natural laccase, thereby demonstrating a broader range of potential applications. The excellent catalytic properties of Cu-ATZ enabled the nanozyme to be used in the polymerization process to remove tetracyclines from water. In order to simulate actual antibiotic pollution of water bodies, tetracyclines were added to the water from sewage treatment plants. Following Cu-ATZ treatment of the water sample, the chemical oxygen demand (COD) content was found to have decreased by over 80 %. In conclusion, this study presented a novel approach for tetracycline elimination from water.

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Source
http://dx.doi.org/10.1016/j.jhazmat.2024.135501DOI Listing

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