Photocatalytic oxidation of methomyl in the presence of semiconducting oxides
by I. Poulios, M. Kositzi, K. Pitarakis, S. Beltsios, I. Oikonomou
International Journal of Environment and Pollution (IJEP), Vol. 28, No. 1/2, 2006

Abstract: The photocatalytic degradation of methomyl, a broad spectrum carbamate insecticide, has been investigated in aqueous heterogeneous solutions containing semiconductor oxides as photocatalysts. It was observed that, in the presence of the catalysts, quantitative degradation of the organic molecule occurs after four hours of illumination. As mineralisation products, CO₂ and SO₄²⁻ ions have been identified, whereas the nitrogen atom forms NH₄⁺ and NO₃⁻ ions. Various commercial catalysts were compared with respect to their overall photocatalytic efficiency, while the initial photonic efficiency (ζ) of mineralisation under various experimental conditions have been calculated.

Online publication date: Mon, 11-Sep-2006

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