- Gazi University Journal of Science
- Vol: 35 Issue: 2
- Decolorization of Reactive Black 5 Using N-Doped TiO2
Decolorization of Reactive Black 5 Using N-Doped TiO2
Authors : Aslı Berktaş, Özlem Esen Kartal
Pages : 360-370
Doi:10.35378/gujs.828761
View : 9 | Download : 5
Publication Date : 2022-06-01
Article Type : Research
Abstract :Decolorization of Reactive Black 5 (RB5) was investigated by heterogeneous photocatalysis using N-doped TiO2. N-doped TiO2 photocatalysts were synthesized by means of a sol-gel process. X-ray diffraction performed the characterization of synthesized samples, scanning electron microscopy and X-ray photoelectron spectroscopy measurements. Photocatalytic activity of N-doped TiO2 samples was assessed by following decolorization and degradation efficiency of RB5. N-TiO2(3) sample yielded the highest decolorization efficiency. The apparent first-order rate constants for decolorization of RB5 with N-TiO2(X) samples followed the order of N-TiO2(3) > N-TiO2(2) > N-TiO2(4) > N-TiO2(1). Improvement of decolorization efficiency of TiO2 was observed doping with nitrogen. The effect of actual sunlight on decolorization efficiency was also investigated. 96% and 49% of decolorization efficiency levels were attained within 60 minutes of reaction time with outdoor sunlight and fluorescent daylight lamps, respectively.Keywords : Sol-gel, Nitrogen doping, Photocatalysis, Reactive Black 5, Solar light