Journal
SOLAR ENERGY
Volume 158, Issue -, Pages 636-643Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2017.10.034
Keywords
F-TiO2 nanolayers; Photodegradation; Textile waste water; Visible and sun light
Categories
Funding
- University of Kashan, Iran [2564512]
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Degradation of azo dyes as textile industry pollutants was investigated by photocatalytic process using F, N and S tri-doped TiO2 thin films immobilized on the glass spheres. Nanocatalyst thin films were successfully prepared via sol-gel dip-coating method. The immobilized TiO2 on the glass spheres were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDS), diffuse reflectance spec; troscopy (DRS) and CHNS analysis. UV-Vis spectroscopy and chemical oxygen demand (COD) have been used in order to evaluate the degradation process. It was found that optimization of fluorine at 5% doping can give rise to the maximum decomposition of 86-100% within 6 h under visible irradiation. Also, according to the COD results, after 6 h, a reduction of the COD value from the azo dye solution was apparently obtained in same condition. The results showed that the synthesized nano-layers have good stability and reproducibility and therefore are potential to be used in various industrial processes.
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