Collect. Czech. Chem. Commun. 1993, 58, 1285-1293

Photocatalytic Oxidation of p-Cresol in Aqueous Titanium Dioxide Suspension

Vlasta Brezová, Eva Brandšteterová, Michal Čeppan and Juraj Pieš

Faculty of Chemical Technology, Slovak Technical University, 812 37 Bratislava, Slovak Republic


The reaction products of the photocatalytic oxidation of p-cresol were characterized by high performance liquid chromatography. The influence of p-cresol concentration as well as the presence of dioxygen and hydrogen peroxide on the rate of photocatalytic oxidation was studied. The p-cresol concentration in the irradiated systems was determined by spectrophotometric method using α-nitroso-β-naphtol or by the Principal Component Regression method (in the sample with hydrogen peroxide added). The reaction pathway of the photocatalytic oxidation of p-cresol in TiO2 suspension was suggested.