STUDY ON THE PHOTOCATALYTIC DEGRADATION OF PHOSPHATE ESTER PESTICIDES

doi:10.7517/j.issn.1674-0475.2000.01.7

Abstract

Abstract: The photocatalytic degradation of phosphate ester pesticides using TiO₂/beads as a photocatalyst was studied. The results showed that the photocatalytic degradation reaction of the phosphate ester pesticides followed the first order kinetics, with 4 0×10^-4 mol/L of dichlorvos and monocrotophos, the residual amount was lower than 10% after 1.5 h irradiation with a 375 W medium pressure mercury lamp, and the organophosphorous can be completely photocatalytically degraded into PO₄^3- after 3.5 h irradiation.

Key words: photocatalytic degradation, phosphate ester, kinetics

CHEN Shifu, LIANG Xin, TAO Yuewu, ZHAO Mengyue. STUDY ON THE PHOTOCATALYTIC DEGRADATION OF PHOSPHATE ESTER PESTICIDES[J]. Imaging Science and Photochemistry, 2000, 18(1): 7-11.

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STUDY ON THE PHOTOCATALYTIC DEGRADATION OF PHOSPHATE ESTER PESTICIDES

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