Photocatalytic Degradation of Methylene Blue over AgAlO2 under UV light Irradiation

AgAlO2 photocatalyst was prepared by the ion exchange method. The physics-chemical properties of the catalyst were characterized by XRD. TEM and DRS. The effect on degradation rate of methylene blue (MB) was evaluated by changing the amount of photocatalyst, initial concentration of MB, pH value and air level under UV light irradiation. The experimental results showed that the methylene blue could be degraded efficiently over AgAlO2 under UV light irradiation. When the optimal amount of photocatalyst, initial concentration of MB, pH value and air level were 1 g/L, 10 mg/L, 7.2 and 2 L/min, MB showed the highest degradation efficiency, and MB could be decomposed by about 93% within 1.5 h.