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Fabrication of Fiber Filter for VOC and Particle Removal with Antibacterial Properties

Category: Others

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DOI: 10.4209/aaqr.2018.12.0474

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Paxton Juuti 1, Markus Nikka1, Marianne Gunell2,3, Erkki Eerola2,3, Jarkko J. Saarinen4, Youichi Omori5, Takafumi Seto6, Jyrki M. Mäkelä1

  • 1 Aerosol Physics, Faculty of Engineering and Natural Sciences, Tampere University, 33720 Tampere, Finland
  • 2 Department of Clinical Microbiology, Turku University Hospital, 20521 Turku, Finland
  • 3 Department of Medical Microbiology and Immunology, University of Turku, 20500 Turku, Finland
  • 4 Department of Chemistry, University of Eastern Finland, 80100 Joensuu, Finland
  • 5 Sanzen Seishi Co. Ltd., Kanazawa, Ishikawa 920-0338, Japan
  • 6 School of Natural System, College of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan


  • Fabrication of filters with VOC adsorption and antibacterial functionalities.
  • Antibacterial activity introduced with two different methods.
  • Comparison of particulate and fibrous nanoscale silver.
  • On-line characterization of particulate silver coating process.


The use of filters to control air quality has been implemented widely in all forms of structures. Unfortunately, filters have a risk of becoming platforms for bacterial growth, which can then be dispersed further in the air stream. To combat this, antibacterial materials are being incorporated into filter media. In this work, we describe two routes of introducing nanoscale silver into filters containing activated carbon fibers (ACF): adding silver nanofibers straight into fiber fabrication process and coating the already fabricated filter with silver nanoparticles generated with liquid flame spray (LFS). The fabricated filters were tested for methanol adsorption, particle penetration and antibacterial activity. The results show that both of the routes are suitable ways of fabricating antibacterial filters, and are highly tailorable and scalable for specific needs.


Air filtration Liquid flame spray Nanoscale silver Adsorption

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