International Journal of Photoenergy (Jan 2005)

The role of pH in aqueous photocatalytic oxidation of β-estradiol

  • Tatyana Malygina,
  • Sergei Preis,
  • Juha Kallas

DOI
https://doi.org/10.1155/s1110662x05000280
Journal volume & issue
Vol. 7, no. 4
pp. 187 – 191

Abstract

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Experimental studies of aqueous photocatalytic oxidation (PCO) of β-estradiol in TiO2 suspensions were undertaken. The dependence of PCO efficiency and adsorption of β-estradiol on pH was studied. It was found that both the adsorption of β-estradiol and the PCO efficiency increased practically linearly with increasing concentration of OH-ions. The predominant role of direct β-estradiol oxidation with positively charged holes was thus indirectly confirmed.