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Preparation of CuCo bimetallic MOF catalytic membrane and
its performance in activating peracetic acid for dye degradation

Authors： SHI Yuqing1,2, LI Guiliang2,3, LIU Fu2,3

Units： 1．School of materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China; 2．Ningbo Institute of Materials Technology & Engineering， Chinese Academy of Sciences, Ningbo 315201, China; 3．Ningbo College of Materials Technology & Engineering, University of Chinese Academy of Sciences, Ningbo 315201, China

KeyWords： peracetic acid; bimetallic metal-organic framework; advanced oxidation; catalytic membrane

ClassificationCode：TB383.2; TQ426; X703

year,volume(issue):pagination： 2025,45(4):53-64

Abstract：

This study addresses the limitations of existing technologies such as adsorption and membrane separation in treating organic pollutant wastewater, including restricted efficiency and the need for further treatment of concentrated pollutants. A Cu-Co bimetallic metal-organic framework (CuCo-MOF) catalytic membrane was developed to construct an advanced oxidation system for efficiently activating the green oxidant peracetic acid (PAA) and achieving rapid degradation of dye molecules in textile wastewater. A nanosheet-structured CuCo-MOF catalyst was synthesized via a coprecipitation method, and a CuCo-MOF catalytic membrane (CuCo-CM) was fabricated using vacuum-assisted assembly. Using methylene blue (MB) as a model pollutant, CuCo-MOF achieved approximately 95% degradation within 10 min under PAA activation, while CuCo-CM required only 2 min to reach the same degradation efficiency, significantly enhancing the degradation rate. Reactive oxygen species quenching experiments confirmed that singlet oxygen (1O2) was the dominant reactive species in the system. Additionally, high-valent metal species such as Co(Ⅳ) contributed to methylene blue degradation through a non-radical oxidation pathway. Long-term stability tests showed that CuCo-CM maintained approximately 80% degradation efficiency after 24 hours, with a flux exceeding 110 L/(m2·h). The prepared CuCo-CM effectively degrades organic pollutants in textile wastewater, demonstrating excellent catalytic performance and operational stability, making it a promising candidate for advanced wastewater treatment.

Funds：

国家自然科学基金项目（52373112）

AuthorIntro：

石玉清（2000-），女，安徽安庆人，硕士研究生，主要从事高级氧化催化膜研究

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