Photocatalytic degradation of 17-β-oestradiol on immobilised TiO2

Heather M Coleman, Brian R Eggins, J.Anthony Byrne, Fiona L Palmer, Emma King

Research output: Contribution to journalArticle

129 Citations (Scopus)

Abstract

Micro-molar concentrations of aqueous 17-β-oestradiol were 98% destroyed in 3.5h by photocatalysis over the titanium dioxide powder immobilised on Ti-6Al-4V alloy. The concentration of oestradiol was determined by HPLC with fluorescence detection. The degradation kinetics were fitted to a Langmuir–Hinshelwood model with k(S)=4.4×10−2μmoldm−3min−1 and K(S)=0.347dm3μmol−1. The pseudo-first-order rate constant (1.57×10−2min−1) was in line with the 50% degradation time of 40min. The apparent quantum yield per electron was φe′ =0.41%. The effect of pH on the initial rate of degradation was similar to that reported for phenol.
Original languageEnglish
Pages (from-to)L1-L5
JournalApplied Catalysis B: Environmental
Volume24
Issue number1
Early online date22 Nov 1999
DOIs
Publication statusE-pub ahead of print - 22 Nov 1999

Keywords

  • Titanium dioxide
  • Oestrogen
  • Photocatalysis
  • Water treatment

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