中文摘要：

文章用共沉淀法合成了铜锡复合氧化物光催化剂，并用X射线衍射（XRD），紫外-可见漫反射（UV-Vis）和透射电子显微镜（TEM）方法对不同焙烧温度下制得的CuO-SnO2纳米复合氧化物的物相组成、晶粒尺寸及光学性质进行了表征。以酸性蓝62染料溶液为模拟废水，在氙灯（模拟日光）光照下，对CuO-SnO2纳米复合氧化物的光催化活性进行了评价，考察了焙烧温度，焙烧时间和活性组分配比对其催化活性的影响。结果表明：在500℃焙烧3h制得的CuO-SnO2（Cu与Sn摩尔比1：1）纳米复合氧化物具有最高的光催化活性，同样条件下，其光催化活性比Degussa P25 TiO2提高约1．6倍。

英文摘要：

The noval CuO-SnO2 nanocomposite photocatalysts were prepared by co-precipitation method. X-ray diffrac- tion, transmission electron microscopy and UV-Vis diffuse reflectance spectroscopy were employed to characterize the phase composition, particle size and optical absorption of the samples. Photocatalytic activity of CuO-SnO2 nano-composite oxide was assessed by using acid blue 62 as a simulated compound under the irradiation of Xe light. The effect of calcining tem- perature, calcining time and ingredient on catalytic activity was investigated. Results showed that the maximum specific ph0- tocatalytic activity was obtained on CuO-SnO2 nanocomposite calcined at 500℃ for 3h with mol rate of 1 ： 1, which was much higher than that of Degussa P25 TiO2.