Antibacterial activity of silver-loaded "green Zeolites"

Philippe Saint-Cricq, Yoshihiro Kamimura, Keiji Itabashi, Ayae Sugawara-Narutaki, Atsushi Shimojima, Tatsuya Okubo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


"Green Zeolites" were prepared, without the use of organic structure-directing agents (OSDAs), by the seed-assisted method and were loaded with silver by a simple ion-exchange procedure. The silver-loaded zeolites were characterized by XRD, transmission electron microscopy and inductively coupled plasma atomic emission spectroscopy, which reveals that the ion-exchange procedure does not affect the structure of the zeolites and the presence of silver cations inside the aluminosilicate matrix. Two types of zeolites presenting different pore arrangements were studied: the beta-type with three-dimensionally interconnected pores and the MTW-type with one-dimensionally interconnected pores. Their activity against E. coli was studied and compared with a commercial zeolite. The influence of the arrangement of the pore channels and the amount of silver loaded were studied. Comparison with the commercial product shows that a smaller amount of silver inside the zeolite is necessary to achieve a similar antibacterial performance within one hour. Silver-loaded green zeolites (beta and MTW-type) were synthesized by using the seed-assisted method followed by an ion-exchange procedure. Their ability to kill E. coli bacteria over a short period through release of silver cations to the cells was demonstrated and compared to that of the commercial zeolite.

Original languageEnglish
Pages (from-to)3398-3402
Number of pages5
JournalEuropean Journal of Inorganic Chemistry
Issue number21
Publication statusPublished - 2012 Jul
Externally publishedYes


  • Aluminosilicates
  • Antibacterial activity
  • Green chemistry
  • Silver
  • Zeolites

ASJC Scopus subject areas

  • Inorganic Chemistry


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