中文摘要：

采用室温液相陈化法制备了复合WO，的MoO3粉体，利用XRD、XPS、UV—Vis和PL光谱对合成产物进行了表征，以太阳光为光源对有机染料结晶紫进行了光催化降解研究。UV—Vis漫反射光谱和PL光谱分析结果表明，适量WO3的复合，能够改善MoO3对光的吸收，降低MoO3的PL光谱强度；当WO3复合量为5％时，复合物的PL光谱强度最低，结晶紫溶液的脱色率为89．12％，COD去除率为87．2％。

英文摘要：

WO3/MoO3 powders were successfully prepared by the chemical ageing method. The products were characterized via X -ray powder diffraction （XRD）, X -ray photoelectron spectroscopy（ XPS）, UV -Vis diffused reflectance spectrum（DRS） and photoluminescence（ PL ） spectrum. The photocatalytic activity of WO3/MoO3 com- posites was evaluated by monitoring the degradation of crystal violet under sunlight irradiation. The results showed that the decoloration rate of crystal violet with 5% WO3/MoO3 product might reach 89.12% and the removal rate of chemical oxygen demand （COD） is 87.2%. UV -Vis light absorption of WO3 / MoO3 composite with different amounts of WO3 was enhanced. The intensity of PL spectrum was different with the WO3 amount of WO3/MoO3 product. When the mole ratio of WO3 was 5%, the intensity of PL spectrum of WO3 / MoO3 was the lowest, the rate of photocatalytic degradation for crystal violet was the highest.