Is there any report on surface oxidation of silver nanoparticles that are embedded in paints and coatings used against microbial fouling on buildings, monuments, etc? Also, what is the likelihood of surface oxidation in such a scenario where there is an existing chemical bond/interaction between paint matrices and nanoparticles? How far does the phenomenon of oxidation affect the performance of these coatings, if at all? Are there any existing strategies and technologies that are applied to overcome such a challenge?
Of course, silver particles can sulfidize in air (4Ag + 2H2S + O2 = 2Ag2S +2H2O), but the antimicrobial effect of the sulfided silver surface is retained.
Vadim Verlotski Thanks for your response! Could you kindly provide me with a research article which has reported such results, Sir? I am required to cite such work where the antimicrobial activity is retained even after the occurrence of surface oxidation.
Dear Parna,
it is not metallic silver that has a bactericidal (antimicrobial) effect, but its ion Ag+, therefore, almost any chemical compound of silver has bactericidal properties. I have no literature on the topic, since this is not my area.
Vadim Verlotski Thanks a lot, Sir! You helped me with a clearer perspective.
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