قادر حسین زاده

In this study, Ca-doped TiO2 photocatalysts with various amounts of Ca (0, 3 and 5 wt. %) and also utilization of Cannabis Sativa leaves were synthesized by green sol-gel method. Afterward, physicochemical properties of the photocatalysts were assessed by XRD, FESEM, EDAX, BET, FTRI and DRS analysis. Next, prepared photocatalysts were applied in photocatalytic degradation of Methylene Blue (MB) and Rhodamine B (RhB) under the simulated sunlight illumination. Among the prepared photocatalysts, 5 wt. % Ca-doped TiO2 (CaTi5) photocatalyst demonstrated the excellent characterizations such as higher surface area, smaller particles size and uniform dispersion and lower energy band gap. CaTi5 based on the superior characterizations indicated the highest dyes degradation. MB and RhB degradation for the CaTi5 after 240 min simulated sunlight illumination were 85% and 90%, respectively. Also, photocatalytic dyes degradation were followed the pseudo first-order reaction kinetic. Moreover, among the various concentrations of CaTi5 (50, 75, 100, 125 and 150 ppm) highest amount of degradation was found for 100 ppm catalyst concentration. Therefore, we can say that CaTi5 is a promising photocatalyst for solar-light-driven degradation of MB and RhB in aqueous solution.