H2O2-Assisted Rapid Visible light Degradation of Carmine Indigo, Crystal Violet and Eosin-Y with MoO3 Modified Bi2Mo3O_(12)

摘要

Bi2(MoO4)3 with excess of MoO3 has been prepared by the combustion method using bismuth nitrate, MoO3 and glycine. The calcined powder showed a band gap of 2.9 eV based on UV-visible diffuse reflectance spectrum, SEM studies revealed particle size in the μm region. The sample as prepared showed excellent photo catalytic activity for the degradation of carmine indigo, crystal violet and Eosin Y in presence of H2O2 under visible light irradiation. Degradation of 20 ppm carmine indigo, 5 ppm crystal violet and 20 ppm Eosin Y aqueous solutions containing 100 mg of dispersed catalyst occurred in 40, 70 and 90 min, respectively. Times taken for degradation of these dyes in the present study are considerably less compared to earlier reports.