WO3 decorated TiO2 nanotube array electrode: Preparation, characterization and superior photoelectrochemical performance for rhodamine B dye degradation

Davaslıoğlu İ. Ç., Özdokur K. V., Koçak S., Çırak Ç., Çağlar B., Bozkurt Çırak B., ...Daha Fazla

Journal of Molecular Structure, cilt.1241, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1241
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.molstruc.2021.130673
  • Dergi Adı: Journal of Molecular Structure
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
  • Anahtar Kelimeler: Photoelectrochemical degradation, Titanium nanotube, Tungsten oxide composite electrode, Azo dyes, Rhodamine B, MAGNETIC-PROPERTIES, ORGANIC POLLUTANTS, CRYSTAL-STRUCTURE, METHYLENE-BLUE, ENHANCEMENT, TUNGSTEN, DRIVEN, PHOTOELECTROCATALYSIS, NANOCOMPOSITES, COMPOSITES
  • Erzincan Binali Yıldırım Üniversitesi Adresli: Evet

Özet

© 2021An efficient photoelectrocatalyst was synthesized by electrochemical deposition of WO3 on the titanium nanotube (TNT) array by subsequent cycling the potential between -0.6 – 1.0 V vs Ag/AgCl. The structural and morphological properties of the electrode obtained (TNT-WO3) was characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and scanning electron microscopic (SEM) techniques and it was revealed that TNT surfaces were successfully decorated by WO3 species without formation of another oxidation species. Then, the photoelectrocatalytic activity of the composite electrode set at 0.2 V (vs Ag/AgCl), was tested under UV light irradiation on the degradation of Methylene blue (MB), Orange G (OG) and Rhodamine B (RhB), as the model pollutants. Among the azo dyes studied, the electrode has given the best performance against RhB in comparison to the bare TNT electrode. The influence of the deposition conditions on the efficiency was examined and under optimal conditions and it was noted that efficient removal of the dye can be achieved within 10 min. Another advantage of the composite electrode is that PEC performance can be tuned by simply changing the parameters of deposition.