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Related Experiment Video

Updated: Oct 3, 2025

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis
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Melamine sponge-based copper-organic framework (Cu-CPP) as a multi-functional filter for air purifiers.

Van Cam Thi Le1,2, Tuu Nguyen Thanh3, Eunsil Kang1,4

  • 1Department of Environmental Sciences and Biotechnology, Hallym University, Chuncheon, 24252 Korea.

The Korean Journal of Chemical Engineering
|February 14, 2022
PubMed
Summary
This summary is machine-generated.

A novel melamine sponge filter coated with copper-organic framework particles effectively captures and disinfects airborne pathogens. This innovative capture-and-disinfection (CDS) filter shows promise as an alternative to traditional HEPA filters for pathogen-free indoor air.

Keywords:
Anti-pathogensCapture and Disinfection Air Filter SystemCu-based Coordination Polymer ParticleDual FunctionalityMelamine Sponge

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Area of Science:

  • Materials Science
  • Environmental Science
  • Nanotechnology

Background:

  • The COVID-19 pandemic highlighted the need for effective indoor air purification systems.
  • Conventional High-Efficiency Particulate Air (HEPA) filters primarily focus on particulate removal, with limited disinfection capabilities.

Purpose of the Study:

  • To develop a multi-purpose air filter capable of both capturing fine particulates and disinfecting airborne pathogens.
  • To investigate the efficacy of a melamine sponge functionalized with copper-organic framework particles for air purification.

Main Methods:

  • A copper-based coordination polymer particle (Cu-CPP) was synthesized and coated onto a melamine sponge (MS) using an in-situ growth dip coating method.
  • The resulting Cu-CPP/MS composite was characterized for its surface area and structural properties.
  • The capture and disinfection rates against *Escherichia coli* were evaluated.

Main Results:

  • The Cu-CPP/MS composite exhibited a high surface area (1,318.1 m²/g) and excellent performance.
  • An outstanding capture rate of 99.66% and an instant disinfection rate of 99.54% for *Escherichia coli* were achieved.
  • Electrostatic attraction and catalytically active Cu²+ sites were identified as key mechanisms for pathogen capture and disinfection.

Conclusions:

  • The study successfully designed a novel capture-and-disinfection (CDS) air filter system using Cu-CPP/MS.
  • This system demonstrates significant potential as a viable substitute for conventional HEPA filters in creating pathogen-free indoor environments.