Antimicrobial Nanomaterials Based on Silver-Modified Zeolites
Summary
Antimicrobial nanomaterials based on silver-modified zeolites harness the unique ion-exchange capacity and microporous architecture of zeolitic frameworks to deliver controlled quantities of silver ions within an inherently stable matrix. By integrating silver cations or nanoparticles into the channels of zeolite crystals, these materials achieve sustained release of Ag⁺, yielding broad-spectrum bactericidal and fungicidal activity. Zeolite support mitigates environmental dissemination of nanoparticles and allows precise adjustment of release profiles through framework composition, silver loading and thermal pre-treatments. Applications range from active food packaging and medical device coatings to water purification, air filtration and textile treatments. The modularity of zeolite synthesis enables fine-tuning of pore dimensions and acidity, facilitating incorporation into polymers, ceramics and surface-coating processes. Current research emphasises enhancing long-term efficacy, minimising cytotoxicity and integrating these composites into scalable manufacturing routes, thereby addressing pressing global challenges in antimicrobial resistance and hygienic control.
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Antimicrobial Nanomaterials Based on Silver-Modified Zeolites publication trend
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Technical terms
Zeolite: A crystalline aluminosilicate with a well-defined microporous structure and high cation exchange capacity.
Ion exchange: A process by which cations in a substrate are replaced by other ions, such as silver ions, within the zeolite framework.
Nanocomposite: A multiphase material in which at least one constituent has dimensions in the nanoscale, combining unique properties of each component.
Silver nanoparticle (AgNP): A metallic particle of silver with dimensions typically between 1 and 100 nm, known for strong antimicrobial effects.
Minimum inhibitory concentration (MIC): The lowest concentration of an antimicrobial agent required to prevent visible growth of a microorganism.
References
- Effect of Exchangeable Ions in Natural and Modified Zeolites on Ag Content, Ag Nanoparticle Formation and Their Antibacterial Activity. Materials (2021).
- Synthesis of Antimicrobial Films Based on Low-Density Polyethylene (LDPE) and Zeolite A Containing Silver. Coatings (2019).
- Antimicrobial materials properties based on ion-exchange 4A zeolite derivatives. Polish Journal of Chemical Technology (2019).
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