20.500.12556/RUL-133389 One-pot synthesis of sulfur-doped TiO$_2$/reduced graphene oxide composite (S-TiO$_2$/rGO) with improved photocatalytic activity for the removal of diclofenac from water Sulfur-doped TiO$_2$ (S-TiO$_2$) composites with reduced graphene oxide (rGO), wt. % of rGO equal to 0.5%, 2.75%, and 5.0%, were prepared by a one-pot solvothermal procedure. The aim was to improve photocatalytic performance in comparison to TiO$_2$ under simulated solar irradiation for the treatment of diclofenac (DCF) in aqueous medium. The obtained composites were characterized for physical-chemical properties using thermogravimetric analysis (TGA), X-ray diffractograms (XRD), Raman, scanning electron microscopy (SEM)/energy dispersive X-ray (EDX), Brauner Emmett Teller (BET), and photoluminescence (PL) analyses, indicating successful sulfur doping and inclusion of rGO. Sulfur doping and rGO have successfully led to a decrease in photogenerated charge recombination. However, both antagonistic and synergistic effects toward DCF treatment were observed, with the latter being brought forward by higher wt.% rGO. The composite with 5.0 wt.% rGO has shown the highest DCF conversion at pH 4 compared to that obtained by pristine TiO$_2$, despite lower DCF adsorption during the initial dark period. The expected positive effects of both sulfur doping and rGO on charge recombination were found to be limited because of the subpar interphase contact with the composite and incomplete reduction of the GO precursor. Consequent unfavorable interactions between rGO and DCF negatively influenced the activity of the studied S-TiO$_2$/rGO photocatalyst under simulated solar irradiation. photocatalysis sulfur doped titanium dioxide composite reduced graphene oxide diclofenac solar photocatalysis TiO$_2$-reduced graphene oxide composite fotokataliza titanov dioksid dopiran z žveplom kompoziti reduciran grafen oksid diklofenak true false true Angleški jezik Slovenski jezik Članek v reviji 2021-11-25 08:13:02 2021-11-25 08:13:03 2022-09-12 04:16:07 0000-00-00 00:00:00 2020 0 0 14 str. iss. 7, art. 1621 Vol. 13 Apr. 2020 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620:549.514.6:544.526.5 1996-1944 10.3390/ma13071621 1538563267 RAZ_Kovacic_Marin_2020.pdf RAZ_Kovacic_Marin_2020.pdf 1 5F07D91888D4396D1AD7B75F9661E0E7 a90dab8d19cf371f03d4cc8091507b879d957750b81359e202713bbd0d75e89c 4859f005-4dbf-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=151417 https://www.mdpi.com/1996-1944/13/7/1621 1 0c02ba9c-4dbf-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=151416 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0