Behavior of bromide in the photoelectrocatalytic process and bromine generation using nanoporous titanium dioxide thin-film electrodes

Selcuk H., Sene J., Zanoni M., Sarikaya H., Anderson M.

CHEMOSPHERE, cilt.54, sa.7, ss.969-974, 2004 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 54 Sayı: 7
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.chemosphere.2003.09.016
  • Dergi Adı: CHEMOSPHERE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.969-974
  • Anahtar Kelimeler: bromine generation, titanium dioxide, electrodes, photoelectrocatalytic, ULTRAVIOLET WAVELENGTHS, AQUEOUS CHLORINE, DEGRADATION, PHOTOLYSIS, DISINFECTION, PRODUCTS, SUNLIGHT, KINETICS, WATER, ACID
  • İstanbul Üniversitesi-Cerrahpaşa Adresli: Hayır

Özet

In this study, the photoelectrocatalytic behavior of bromide and generation of bromine using TiO2 was investigated in the separate anode and cathode reaction chambers. Our results show that the generation of bromine begins around a flatband potential of -0.34 V vs. standard calomel electrode (SCE) at pH 3.0 under UV illumination and increases with an increase in positive potential, finally reaching a steady-state concentration at 1.0 V vs. SCE. Maximum bromine formation occurs over the range of pH 4-6, decreasing sharply at conditions where the pH > 7. (C) 2003 Elsevier Ltd. All rights reserved.