Berkta, AsliKartal, Ozlem Esen2024-08-042024-08-0420222147-1762https://doi.org/10.35378/gujs.828761https://search.trdizin.gov.tr/yayin/detay/1138273https://hdl.handle.net/11616/92662Decolorization 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. The characterization of synthesized samples was performed by X-ray diffraction, 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.eninfo:eu-repo/semantics/openAccessSol-gelNitrogen dopingPhotocatalysisReactive Black 5Solar lightArticle35236037010.35378/gujs.8287612-s2.0-85136444797Q31138273WOS:000821361100003N/A