Visible light assisted photo catalytic degradation of 2, 4- dinitrophenol and 2, 4, 6- trinitrophenol using H2O2 sensitized BiVO4

Abstract 2, 4-dinitrophenol and 2, 4, 6- trinitrophenol were successfully photodegraded using visible light active monoclinic BiVO4 as photocatalyst. 10ppm of dinitrophenol is photodegraded using 50mg BiVO4 under irradiation for 3h. 10ppm trinitrophenol is photodegraded using 100mg BiVO4 under irradiation for 3h. Ease of photodegradation of DNP and TNP varied in the order DNP > TNP for the same amount of photocatalyst. Photoluminescence studies confirmed the formation of ·OH free radicals due to irradiation. Synergetic effect is noticed between BiVO4 and H2O2.

Keywords Photocatalysis, 2, 4- dinitrophenol, 2, 4, 6- trinitrophenol, BiVO4, Picric acid.

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