Environmental pollution is a big problem faced by everyone all over the world, out of which water pollution is a major one. In solving the problem of water pollution, photocatalysis plays an important role. In the present work, barium chromate powder has been used as a photocatalytst to degrade Eosin Yellow. The rate of decomposition was affected by different parameters such as pH, concentration of dye, amount of photocatalyst and intensity of light. The optimum conditions were obtained as pH = 7.5, [Eosin Yellow] = 1.0 x 10-5 M, amount of BaCrO4 = 0.06 g, light intensity = 60.0 mWcm-2. The rate constant obtained was k = 1.53 x 10-4 s-1. The reaction proceeded through oxidation by hydroxyl radicalas confirmed by radical scavenger 2-propanol.
Photocatalytic, Eosin yellow, Barium chromate