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This paper investigates the geopolymers with metal microparticles (metal powder) as additives and assesses the antimicrobial effect on these composites. Samples of geopolymers were prepared with 4 % silver, copper, or nickel microparticle additive. The antimicrobial properties were based on a leaching test from composites, and the inhibition zone around Escherichia coli and Micrococcus luteus bacteria cells was investigated. Microparticles, especially silver and copper, were confirmed effective as antimicrobial reagents in geopolymer composites, with copper microparticles also being favourable over silver due to its significantly lower price.
Keywords: Geopolymer, antimicrobial property, bacteria cell, microparticle, metal© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.