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

126 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.
LanguageEnglish
PagesL1-L5
JournalApplied Catalysis B: Environmental
Volume24
Issue number1
Early online date22 Nov 1999
DOIs
Publication statusE-pub ahead of print - 22 Nov 1999

Fingerprint

Estradiol
Degradation
degradation
Photocatalysis
Quantum yield
Phenol
Powders
Titanium dioxide
Phenols
phenol
Rate constants
fluorescence
Fluorescence
electron
kinetics
Kinetics
Electrons
rate
titanium alloy (TiAl6V4)
titanium dioxide

Keywords

  • Titanium dioxide
  • Oestrogen
  • Photocatalysis
  • Water treatment

Cite this

Coleman, Heather M ; Eggins, Brian R ; Byrne, J.Anthony ; Palmer, Fiona L ; King, Emma. / Photocatalytic degradation of 17-β-oestradiol on immobilised TiO2. In: Applied Catalysis B: Environmental. 1999 ; Vol. 24, No. 1. pp. L1-L5.
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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.",
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Photocatalytic degradation of 17-β-oestradiol on immobilised TiO2. / Coleman, Heather M; Eggins, Brian R; Byrne, J.Anthony; Palmer, Fiona L; King, Emma.

In: Applied Catalysis B: Environmental, Vol. 24, No. 1, 22.11.1999, p. L1-L5.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Photocatalytic degradation of 17-β-oestradiol on immobilised TiO2

AU - Coleman, Heather M

AU - Eggins, Brian R

AU - Byrne, J.Anthony

AU - Palmer, Fiona L

AU - King, Emma

PY - 1999/11/22

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N2 - 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.

AB - 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.

KW - Titanium dioxide

KW - Oestrogen

KW - Photocatalysis

KW - Water treatment

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SN - 0926-3373

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