| Summary: | Green synthesis is a simple, eco-friendly, and emerging approach to synthesizing nanoparticles and is currently attracting the scientific community worldwide. The objective of the present study was to synthesize green titanium dioxide NPs and evaluate their performance for the photocatalytic treatment of textile wastewater after the secondary treatment process. TiO2 NPs were synthesized using leaf extracts of asausage tree (Kigelia Africana) in asingle step. The green synthesized TiO2 NPs were characterized by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDX), X-Ray Diffraction (XRD), Fourier-Transform Infrared spectroscopy (FT-IR), Diffuse Light Scattering spectroscopy (DLS), Transmission Electron Microscopy (TEM). The findings validated the synthesis of the spherical-shaped TiO2 NPs and their anatase phase. The green-produced TiO2 NPs were used for the treatment of textile effluent. During the photocatalytic treatment of aself-designed dye solution, 99.59% removal of Toluidine blue(TB) dye was achieved within 60 minupon the treatment of green synthesized TiO2 NPs studied by a UV–Visible spectrophotometer. Therefore, the green TiO2NPs that were developed have been examined for the treatment of wastewater, and the catalyst has reusability make it more efficient and affordable, and it might be used to remove organic dyes from textile industries
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