20.500.12556/RUL-177858 Sustainable production and characterization of ZnO–GO nanocomposites from waste Zn–C batteries for photocatalytic degradation of malachite green In this study, ZnO–GO nanocomposites were synthesized from waste Zn–C batteries and used for the photocatalytic degradation of malachite green (MG) under UV light. ZnO–GO nanocomposites with different GO contents (1, 2.5, and 5 wt%) were prepared at room temperature and characterized by XRD, SEM, EDS, and UV–Vis spectroscopy. The GO content significantly affects the morphology, optical properties, and photocatalytic activity of the nanocomposites. In the presence of ZnO NPs, a malachite green degradation efficiency of 96.25% was achieved in 90 min, while ZnO–1%GO, ZnO–2.5%GO, and ZnO–5%GO achieved 95.35%, 97.27%, and 99.6% MG degradation, respectively, in just 30 min. The photocatalytic degradation process of MG was optimized using Response Surface Methodology (RSM). The effects of GO content, catalyst dosage, initial MG concentration, and irradiation time on the efficiency of photocatalytic degradation were investigated, and optimal conditions were determined. Under optimal conditions, a photocatalytic degradation efficiency of 98.51% was achieved. These results indicate that ZnO–GO nanocomposites synthesized from waste Zn–C batteries are efficient and environmentally friendly photocatalysts for the treatment of dye-contaminated wastewater. recycling of Zn–C batteries ZnO–GO photocatalysis malachite green RSM true false true Angleški jezik Angleški jezik Članek v reviji 2026-01-10 04:27:41 2026-02-17 10:53:43 2026-02-18 04:22:26 0000-00-00 00:00:00 2026 0 0 Str. 1-28 iss. 1 Vol. 16 2026 0000-00-00 Zaloznikova NiDoloceno NiDoloceno 0000-00-00 0000-00-00 2026-01-08 669 2075-4701 10.3390/met16010071 264067331 RAZ_Stankovic_Sonja_2026.pdf RAZ_Stankovic_Sonja_2026.pdf 1 F5552F7B629C08877B4A26F2939B28B4 1eacdcd9e3bd654e18a9b4a39e032b701e35fdcbfcf8061cb671624801437612 1214cd98-0be6-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=228177 https://www.mdpi.com/2075-4701/16/1/71 0 243cd36e-0be6-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=228178 Naravoslovnotehniška fakulteta 0 0 0