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Antibacterial Activity of Silver‐Loaded “Green Zeolites”
Author(s) -
SaintCricq Philippe,
Kamimura Yoshihiro,
Itabashi Keiji,
SugawaraNarutaki Ayae,
Shimojima Atsushi,
Okubo Tatsuya
Publication year - 2012
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201200476
Subject(s) - chemistry , zeolite , aluminosilicate , ion exchange , transmission electron microscopy , chemical engineering , matrix (chemical analysis) , molecular sieve , inorganic chemistry , ion , catalysis , organic chemistry , chromatography , engineering
“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.