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Core–shell ZIF-67(Co) wrapped CuO as high efficient peroxymonosulfate catalyst for the degradation of methylene blue

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(2), pp.573-585
  • DOI : 10.1007/s42823-022-00446-3
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : August 17, 2022
  • Accepted : December 2, 2022
  • Published : March 1, 2023

Zhu Wenjun 1 Zuo Xiaohua 2 Deng Xiangyi 2 Zhang Xinhao 2 Yao Chuang 3 Wang Xiaobo 4

1Hubei Key Laboratory of Coal Conversion and New Carbon Material, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan
2College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University
3Guangdong Wastewater Treatment Engineering Technology Center of Standard and Efficiency Increasing and Resource Recycling, Guagdong Research Institute of Engineering Technology Co.
4College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Mine Environmental Pollution Control and Remediation, Hubei Polytechnic University, Huangshi

Accredited

ABSTRACT

Core–shell ZIFs wrapped CuO hybrid materials (CuO@ZIF-67(Co)) were designed, synthesized, characterized, and employed as peroxymonosulfate (PMS) activators to degrade methylene blue (MB). It demonstrated outstanding catalytic activity on account of the unique structure and the synergistic effect between CuO cores and ZIF-67(Co) shells, resulting in complete degradation of MB (10 mg/L) in 1 min. Reactive oxygen species (ROSs) research showed that both SO4− and OH were responsible for the removal of MB. The synergistic activation mechanisms in the CuO@ZIF-67(Co)/PMS system were investigated, which mainly involved the effective electron transfer of CuO and ZIF-67(Co) for accelerating the cycle of CuII/CuI and CoIII/CoII. This study broadens the application of MOF-derived materials for wastewater treatment.

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