Advanced Filtration and antimicrobial technologies

Antibacterial filters and membranes treatment for biofouling prevention Filtration fibre materials functionalized by zero-valent iron nanoparticles

Filters and membranes with antimicrobal properties

Antibacterial/antifouling treatment of a variety of materials

Characteristics of Ag-modified filtration materials

  • Patented technology* of covalent immobilization of Ag nanoparticles on solid surfaces
  • Universal deposition on substrates of different shapes
  • Software controlled process of functionalization (with numerous adjustable parameters)
  • Functionalization of dense fibre systems in entire thickness
  • Exhibit unique antibacterial/ antifouling properties
  • Functionalization of micro-/nano structured membranes and filters
  • Controllable release of Ag nanoparticles

Paper: Antifungal activity of silver nanoparticles against Candida spp. By: Panacek, Ales; Kolar, Milan; Vecerova, Renata; et al.BIOMATERIALS Volume: 30 Issue: 31 Pages: 6333-6340 Published: NOV 2009

Reactive filters for contaminant removal

Filtration fibre materials functionalized with zero-valent iron nanoparticles

Characteristics of Fe-functionalized filtration materials

  • Patented technology* of fibre-filters functionalization
  • Functionalization of any type of fibre filters/membranes
  • Functionalized magnetic filters/membranes are highly-effcient for contaminant removal (metals, reducible organic compounds)
  • Filters are air-stable and patternable upon request
  • Possibility to combine reductive properties of Fe0 nanoparticles with antimicrobial activity of Ag nanoparticles (i.e., bimetallic Ag-Fe functionalization)
  • Loading of metal nanoparticles can be tailored to particular application
  • Environmental friendly filtration technology
  • Effective, affordable, sustainable filtration technology



Example of Filter modification

Fe0 nanoparticles on cellulose filters forming magnetically active membrane hybrids, showing high activity towards the removal of Cr6+ and an excellent catalytic ability to convert phenols into catechol, by simple filtration processes.


*European Patent No. 14184322.7-1352

K. K. R. Datta, E. Petala, K. J. Datta, J. Perman, J. Tucek, P. Bartak, G. Zoppellaro, M. Otyepka, R. Zbořil, Chem. Commun., 2014, 50, 15673-15676

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