Decolorization of Reactive Black 5 Using N-Doped TiO2

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Berkta A., KARTAL Ö. E.

GAZI UNIVERSITY JOURNAL OF SCIENCE, cilt.35, sa.2, ss.360-370, 2022 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 35 Sayı: 2
  • Basım Tarihi: 2022
  • Doi Numarası: 10.35378/gujs.828761
  • Dergi Adı: GAZI UNIVERSITY JOURNAL OF SCIENCE
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus, Academic Search Premier, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, Metadex, Civil Engineering Abstracts, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.360-370
  • Anahtar Kelimeler: Sol-gel, Nitrogen doping, Photocatalysis, Reactive Black 5, Solar light, WASTE-WATER TREATMENT, VISIBLE-LIGHT, PHOTOCATALYTIC DEGRADATION, ANATASE TIO2, NANOPARTICLES, PERFORMANCE, OXIDATION, DYE
  • İnönü Üniversitesi Adresli: Evet

Özet

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. 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.