We synthesized nanostructured AgNbO 3 silver perovskite oxide, which prevents the proliferation of microbial cells without undergoing corrosion. The compound was tested for antimicrobial activity against Grampositive Staphylococcus aureus and Gram-negative Pseudomonas aeruginosa. We confirmed that the antimicrobial activity of the compound was not related to its high dielectric and piezoelectric properties. While the measured activity, as quantified by the minimum inhibitory concentration, was similar to the activity of Ag 2 O particles subjected to the same mechanical treatments, the level of silver ion release of Ag 2 O was 60 times higher than that of AgNbO 3 . This indicated that the antimicrobial activity of AgNbO 3 is not due to corrosion resulting in silver ion release to the media.
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