Photocatalytic removal of hazardous Ponceau S dye using Nano structured Ni-doped TiO sub(2) thin film prepared by chemical method

• Published in: Applied nanoscience Vol. 5; no. 2; pp. 229 - 234
• Main Authors: Marathe, Sunil D, Shrivastava, Vinod S
• Format: Journal Article
• Language: English
• Published: 01.02.2015
• Subjects: Dyes; Hazardous; Nanostructure; Nickel; Photocatalysis; Scanning electron microscopy; Thin films; Titanium dioxide
• ISSN: 2190-5509; 2190-5517
• DOI: 10.1007/s13204-014-0310-9

Many attempts have been made by researchers for the removal of various dyes using nano structured Ni-doped TiO sub(2); however, removal of 'hazardous Ponceau S dye' using nano structured Ni-doped TiO sub(2) has been not studied yet. In the present work, environmental application of Nano structured Ni doped TiO sub(2) has been studied. Nano structured Ni-doped TiO sub(2) thin films were deposited by the chemical method on a glass substrate. The prepared thin film was characterized by XRD, SEM, and EDX. The crystal size calculated from XRD is about 26.2 nm. The SEM analysis reveals nano spherical morphology of average particle size about 92 nm. The optical analysis was carried by using UV-visible spectroscopy. The band gap estimated from absorbance spectra for thin film was around 3.5 eV, making suitable Ni-doped TiO sub(2) for photocatalytic removal of hazardous Ponceau S dye. In photocatalytic application different parameters like dye concentration, contact time, pH, UV light and sunlight were optimized for the removal of Ponceau S dye, respectively. The change in chemical oxygen demand after photo catalytic treatment was also studied.