A method for altering the decomposition pathway of pollutants by peroxymonosulfate (PMS) using copper distribution patterns, and a method for preparing and applying a composite catalyst.

By altering the copper distribution pattern in Cu-MXene composite catalysts, the catalysts' activity and stability are enhanced, effectively decomposing antibiotic contaminants in water with high efficiency and stability.

JP7863903B2Active Publication Date: 2026-05-22TIANJIN UNIV
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TIANJIN UNIV
Filing Date
2023-02-22
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

Existing heterogeneous catalysts for peroxymonosulfate (PMS) exhibit low activity and stability due to inefficient metal utilization and leaching, with the distribution pattern of metals influencing active sites and oxidation selectivity but not adequately addressed.

Method used

A method to alter the decomposition pathway of pollutants using copper distribution patterns, preparing Cu-MXene composite catalysts with single-atom, cluster, and copper film distributions, enhancing active species generation and stability.

Benefits of technology

The Cu-MXene composite catalysts achieve high removal rates of antibiotic contaminants, with 95% decomposition in 60 minutes and stable catalytic performance, demonstrating improved efficiency and stability.

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Abstract

The present invention provides a method for changing the decomposition pathway of pollutants by peroxymonosulfate (PMS) using the distribution pattern of copper, and a method for preparing a composite catalyst and its application, which belong to the technical field of multifunctional water treatment purification materials. In the present invention, Ti3C2-MXene is used as a deposition support, nitrogen is used as a carrier gas, and Bis(dimethylamino-2-propoxy)copper(II), 98% or more Cu(dmap)2 precursor and diethyl zinc precursor are alternately pulse-irradiated to the deposition support, and Cu-MXene composite catalyst with different copper distribution modes is obtained under different deposition cycles. In this invention, the parameters of the preparation process are simultaneously adjusted, the distribution pattern of copper is changed, the active sites of the catalyst are adjusted, and the sulfanilamide decomposition pathway and the toxicity of the intermediate products are controlled by changing the peroxymonosulfate (PMS) activation pathway and the type of active species generated. Metal loading by atomic layer deposition technology can achieve uniform deposition, precisely control the catalyst composition and dispersion, and improve the catalytic activity of the catalyst.
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