Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates

IVANOVA I.; SCHNEIDER J.; MENDIVE C.; BAHNEMANN D.

Oporto

Congreso; 7th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications (SPEA7); 2012

The photocatalytic activity of TiO2 immobilized on three different metal substrates (stainless steel, copper and titanium) has been investigated using dichloroacetic (DCA) and oxalic acid (OA) as model compounds.The TiO2 immobilization was realized by coating the metallic surfaces employing the Cold Gas Spraying technique.The resulting photocatalytic activities are compared to that of the commonly used TiO2 suspension prepared with the highly active photocatalytic commercial powder P25 from Evonik. OA was foundto be more efficiently photocatalytically degraded than DCA.