Нанокомпозитний модифікатор з антибактеріальною активністю

• Datum: 2026
• Hauptverfasser: Rozhdestvenska, L.М., Kudelko, K.О., Palchik, A.V., Vygovska, L.M., Ushkalov, V.O.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine 2026
• Schlagworte: наночастинки срібла; вуглецеві наноточки; фосфор; цирконій; неорганічні композити; антибактеріальна активність
• Online Zugang: https://www.cpts.com.ua/index.php/cpts/article/view/853
• Назва журналу: Chemistry, Physics and Technology of Surface

Silver nanoparticles (AgNPs) are well known for their antibacterial properties, simple method of preparation and possibility to be used for the treatment of filtration membranes. To prevent a decrease in the activity of nanoparticles and their stability in the membranes pores during filtration, it is proposed to use nanoparticles as a composite with inorganic ion exchanger zirconium hydrogen phosphate (ZHP). The composite can be used as a separate sorption material with antibacterial properties and a modifier of membranes, fabrics or other surfaces. In addition, to enhance the antibacterial and hydrophilic properties, carbon nanodots (CNDs) were introduced into the composite. Silver nanoparticles were synthesized using a number of chemical reductants (sodium borohydride and sodium citrate) as well as by a “green” method in the presence of a plant reductant, as namely dandelion root (Taraxacum officinale) extract. The nanoparticles were characterized by TEM, SEM and UV-Vis spectroscopy. The antibacterial activity of the obtained products was evaluated by disk-diffusion experiments against a wide range of gram-positive and gram-negative bacteria. The inhibitory properties of “green” AgNPs were twice as high as those of chemically obtained one due to the additional antibacterial properties of root extract caused by the flavonoids, alkaloids and inulin. It was shown that the inert inorganic ion exchanger and the modified polytetrafluoroethylene (PTFE) membrane acquire antibacterial properties after treatment with AgNPs and CNDs. Composite materials showed inhibition of Pseudomonas aeruginosa bacteria growth that is known to have a high resistance to antibiotics in hospitals. Incorporation of composite modifier to microfiltration tubular polymer membrane results in transformation into rigid ultrafiltration one with hydrophilic surface and antibacterial properties. It should be expected antifouling activity of modified membranes. The resulting composites can be used for surface modification and filtration of harmful hospital and other wastes.