20.500.12556/RUL-138686 Multifunctional antibacterial and ultraviolet protective cotton cellulose developed by in situ biosynthesis of silver nanoparticles into a polysiloxane matrix mediated by sumac leaf extract A novel facile and eco-friendly procedure for fabrication of multifunctional antibacterial and ultraviolet (UV) protective cotton surface was presented, including premodification of cellulose fibres with a polysiloxane matrix, followed by green in situ biosynthesis of silver nanoparticles (Ag NPs) in the presence of sumac leaf extract as a reducing and stabilising agent. During the biosynthesis, face-centred cubic Ag NPs with an average size of 52–105 nm were generated on the cotton fibres. Increasing the concentration of the AgNO$_3$ precursor resulted in increased concentration of Ag NPs of 50–11,000 mg/kg. The chemically modified cotton surface exhibited excellent antimicrobial and UV protection properties. The additive antibacterial activity of Ag NPs and sumac leaf extract showed biocidal activity against S. aureus even at the lowest Ag NP concentration of 50 mg/kg, and in the case of E. coli, biocidal activity was achieved at a concentration of 340 mg/kg. The presence of both Ag NPs and sumac leaf extract provided UV protection factor greater than 40, irrespective of Ag NP concentration. The increase in Ag NP concentration significantly improved the durability of the coating. cotton cellulose green in situ synthesis Ag NPs sumac leaf extract antimicrobial activity UV protection bombaž celuloza zelena in situ sinteza Ag nanodelci octovec ekstrakt listov protimikrobna aktivnost UV-zaščita true false true Angleški jezik Slovenski jezik Članek v reviji 2022-08-09 12:51:54 2022-08-09 12:51:56 2022-09-15 04:17:03 0000-00-00 00:00:00 2021 0 0 12 str. Vol. 563, art. 150361 15 Oct. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677 0169-4332 10.1016/j.apsusc.2021.150361 67347971 1-s2.0-S0169433221014355-main.pdf 1-s2.0-S0169433221014355-main.pdf 1 CC8143F9D78385E03BB2B2CBC404B2C3 84f2dcca82db3cfe4002491663fbbe0c17b5779dbb9335cd3ac005288d998796 48ab4cff-17d1-11ed-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159088 https://www.sciencedirect.com/science/article/pii/S0169433221014355 0 ffd1dafc-17d0-11ed-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=159087 Naravoslovnotehniška fakulteta Biotehniška fakulteta 0 0 0