Synthesis and photocatalytic activity of Er3+:Y3Al5O12/Bi2WO6 compound

Abstract:

In this paper, we used the sol-gel method to prepare the Er3+:Y3Al5O12. Then Er3+:Y3Al5O12 and Bi2WO6 were composited to make photocatalyst the Er3+:Y3Al5O12/Bi2WO6 compound by using ultrasonic dispersion method, which were characterized by XRD and SEM. In the (visible light) three color light irradiation. A series of studies on the degradation effect of Rhodamine B were carried out, such as roasting temperature, roasting time of Er3+:Y3Al5O12/Bi2WO6 and the amount of catalyst, light intensity, light time on the degradation rate of Rhodamine B. In addition, the catalytic activities of Er3+:Y3Al5O12/Bi2WO6 degradation with different dyes and different dye concentrations were investigated and compared with that of the single Bi2WO6. The experimental results demonstrate that the best degradation efficiency of Rhodamine B dye can be obtained at the amount of catalyst 1.00 g/L, the initial concentration of the dye 10.00 mg/L, the roast temperature of 350 ℃ and roasting time of 120 min.