MoO3/Cd0.5Zn0.5S复合材料光催化降解甲基橙

Photocatalytic degradation of methyl orange by MoO3/Cd0.5Zn0.5S composite

摘要:

以MoO3、Cd0.5Zn0.5S、聚乙烯吡咯烷酮（PVP）为原料，水热一锅法制备了复合材料MoO3/Cd0.5Zn0.5S，通过XRD、XPS、SEM、UV-Vis DRS及PL对复合材料的结构、形貌以及光学性能进行了表征。可见光照射下，MoO3/Cd0.5Zn0.5S复合材料对甲基橙（MO）、罗丹明B、亚甲基蓝、孔雀石绿、酸性品红等染料具有光催化降解能力，其中对MO的光催化活性最佳。结果表明，可见光照射60 min，0.67 L/g 10%Cd0.5Zn0.5S/MoO3对MO的降解率达到98.0%，反应速率常数为0.06725 min-1，分别为MoO3和Cd0.5Zn0.5S 光降解MO的169倍和31倍。

Abstract:

The composite material of MoO3/Cd0.5Zn0.5S was synthesized by the one-pot hydrothermal method using MoO3, Cd0.5Zn0.5S and PVP. The structure, morphology and optical properties of the composite were characterized by XRD, XPS, SEM, UV-Vis DRS and PL. Under visible light irradiation, MoO3/Cd0.5Zn0.5S possessed photocatalytic degradation ability for methyl orange, rhodamineB, methylene blue, malachite green and acid fuchsin. Among them, the photocatalytic activity of methyl orange is the best. The experimental results showed that the degradation rate of methyl orange was 98% under the optimal conditions of 60 min, 0.67 g/L 10% Cd0.5Zn0.5S/MoO3 as well as visible light. For photocatalytic degradation methyl orange, reaction rate constant of 10%Cd0.5Zn0.5S/MoO3 was 169 times and 31 times that of MoO3 and Cd0.5Zn0.5S, respectively.