20.500.12556/RUL-164736 Green in-situ synthesis of TiO$_2$ in combination with Curcuma longa for the tailoring of multifunctional cotton fabric Zelena in situ sinteza TiO$_2$ v prisotnosti ekstrakta kurkume za izdelavo večfunkcionalne bombažne tkanine The introduction of green chemistry has become urgent in the development of innovative, high-performance functional textiles to reduce the environmental footprint of their production. This study aims to develop a new eco-friendly process for the hydrothermal in-situ synthesis of TiO$_2$ in cotton fabric and dyeing with curcumin natural dye to produce a photocatalytically active coloured textile platform with simultaneous UV protection properties. Two approaches were developed: classical, which included dyeing of the cotton samples with Curcuma longa (turmeric) extracts at different concentrations (5 g/L, 10 g/L and 15 g/L) and subsequent hydrothermal in-situ synthesis of TiO$_2$ in the presence of the dyed cotton samples, and greener, in which simultaneous dyeing with turmeric extracts and hydrothermal in-situ synthesis of TiO$_2$ were carried out. Since increasing the turmeric concentration hindered the photocatalytic performance of TiO$_2$ in the chemically modified cotton samples, 5 g/L was selected as the most suitable turmeric concentration. A comparison of the chemical modification processes shows that the simultaneous dyeing of cotton with turmeric extract and hydrothermal in-situ synthesis of TiO$_2$ was beneficial and resulted in a UV protection factor 50+, which corresponds to excellent protection category. The photocatalytic activity of TiO$_2$ was maintained in the presence of turmeric, indicating the compatibility of both players in the chemically modified cotton, but not the creation of a turmeric–TiO$_2$ heterojunction with visible-light-driven photocatalysis. The presence of TiO$_2$ inhibited the photodegradation of the curcumin dye, further confirming the compatibility of the two players. Pri razvoju inovativnih, visokozmogljivih funkcionalnih tekstilij je za zmanjšanje okoljskega odtisa pri njihovi proizvodnji postala vpeljava zelene kemije nujna. Zato je bil namen raziskave razviti nov okolju prijazen postopek hidrotermalne in situ sinteze TiO$_2$ na bombažni tkanini in barvanja z naravnim barvilom kurkume za proizvodnjo fotokatalitsko aktivne obarvane tekstilije s hkratnimi UV-zaščitnimi lastnostmi. Razvita sta bila dva pristopa, in sicer klasični, ki je vključeval barvanje vzorcev bombaža z izvlečki kurkume različnih koncentracij (5 g/L, 10 g/L in 15 g/L) in naknadno hidrotermalno in situ sintezo TiO$_2$ v prisotnosti pobarvanih vzorcev bombaža, in bolj zeleni, kjer sta sočasno potekala barvanje z izvlečki kurkume in hidrotermalna in situ sinteza TiO$_2$. Ker je povečanje koncentracije kurkume oviralo fotokatalitsko delovanje TiO$_2$ v kemično modificiranih vzorcih, je bila kot najprimernejša koncentracija kurkume izbrana 5 g/L. Iz primerjave postopkov kemične modifikacije je razvidno, da sta bila sočasno barvanje bombaža z izvlečkom kurkume in hidrotermalna in situ sinteza TiO$_2$ zelo učinkovita, s čimer je tkanina dobila UV-zaščitni faktor 50+, kar je kategorizirano kot odlična zaščita. Fotokatalitska aktivnost TiO$_2$ se je v prisotnosti kurkume ohranila, kar je kaže na združljivost obeh akterjev v kemično modificiranem bombažu, ni pa se tvoril kompozit kurkuma-TiO$_2$ s povečano fotokatalitsko aktivnostjo pri osvetljevanju z vidno svetlobo. Prisotnost TiO$_2$ je zavrla fotorazgradnjo kurkume, kar dodatno potrjuje združljivost obeh komponent. cotton TiO$_2$ turmeric extract photocatalytic activity UV protection bombaž TiO$_2$ ekstrakt kurkume fotokatalitska aktivnost UV-zaščita true false true Angleški jezik Slovenski jezik Članek v reviji 2024-11-08 11:05:52 2024-11-08 11:05:53 2026-02-03 04:26:07 0000-00-00 00:00:00 2023 0 0 Str. 321-338 no. 4 Vol. 66 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677 0351-3386 10.14502/tekstilec.66.2023075 177712899 06-DOI_10.14502_tekstilec.66.2023075+(321-338).pdf 06-DOI_10.14502_tekstilec.66.2023075+(321-338).pdf 1 D06F66711C4AFC45615D747DE406811C 9d269e0459fafd44ef2f71c00ccd374163f7c374f1562b14bfc8114dc8972da1 e6a71ccd-001c-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=226968 https://journals.uni-lj.si/tekstilec/article/view/16212 0 b0a247e5-9db8-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=195367 Naravoslovnotehniška fakulteta Tekstilec 0 0 0