Photocatalytic
Degradation of Bispyribac Sodium by Cerium doped Zinc Oxide
Paliwal Praveen, Ameta Rakshit and Chaudhary Varsha
Res. J. Chem. Environ.; Vol. 29(6); 31-37;
doi: https://doi.org/10.25303/296rjce031037; (2025)
Abstract
The performance of cerium dopped zinc oxide as a photocatalyst has been evaluated
in the photodegradation of commercial herbicide, bispyribac sodium. The experiments
were conducted by mercury lamps as source of ultra-violet radiation. The degradation
of bispyribac sodium was studied by varying the percentage of cerium doping on ZnO
(i.e. from 0.2, 1, 2,3 and 4%), pH, amount of photocatalyst, concentration of bispyribac
sodium and the intensity of light.
The optimum conditions were: pH = 7.7, 3% Ce doped ZnO catalyst = 150 mg, bispyribac
sodium concentration = 30 ppm and light intensity = 19.2mW/cm-2. About 85% bispyribac
degradation was achieved under this treatment.
