Removal of Toluidine blue in water using green synthesized nanomaterials

• Published in: South African journal of chemical engineering Vol. 45; pp. 42 - 50
• Main Authors: Venkatesan, D., Umasankar, S., Mangesh, V.L., Krishnan, P.Santhana, Tamizhdurai, P., Kumaran, R., Baskaralingam, P.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-07-2023; Sabinet Online; Elsevier
• Subjects: Care and treatment; Diffraction; Environmental aspects; Green synthesis; Infrared spectroscopy; Organic dyes; Photocatalyst; Potential applications; Purification; Sewage; TiO2 nanoparticle; Titanium dioxide; Tuberculosis; Wastewater; X-ray spectroscopy; X-rays; India; Green synthesis; Wastewater; Photocatalyst; Potential applications; TiO2 nanoparticle
• ISSN: 1026-9185
• DOI: 10.1016/j.sajce.2023.04.006

•TheTiO2 nanoparticle were successfully synthesized by green approach method using extracts of leaves.•The synthesized TiO2 NPs were characterized by SEM, EDX, XRD, FT-IR, DLS, UV-DRS.•The optimized conditions of dye degradation are pH-7, 30 ppm TB dye concentration and catalyst dosage 10 mg in 50 mL for TB dye.•The long-term stability and reusability of the synthesized TiO2 catalyst makes it more efficient.
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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