中文摘要：

采用天然棉花为模板制备了具有高光催化活性的SnO2/ZnO复合中空纤维光催化材料;利用X-射线衍射（XRD）、扫描电子显微镜（SEM）技术对其相结构和形貌进行了表征;以亚甲基蓝（MB）的脱色降解为模型反应,考察了Sn4＋和Zn2＋物质的量比为0.1∶1时煅烧温度对其催化性能的影响。实验结果表明：制备的样品为复制了棉花纤维模板形貌、具有中空结构的SnO2和ZnO半导体复合材料（SnO2/ZnO）;煅烧温度对材料SnO2/ZnO的结晶度、晶粒大小﹑表面微结构和催化性能等有显著影响;650℃左右所得样品在太阳光下的催化活性最好,1 h可使MB溶液的脱色降解率达100%;该材料易于离心分离,具有良好的催化活性和重复使用性能。

英文摘要：

Composite SnOJZnO hollow fiber materials with high catalytic activity were prepared by using cotton fiber as the template. The X-ray diffraction （XRD） and scanning e- lectron microscope （SEM） were used to characterize the phase structure and morphology of the samples. The decolori- zation of dye methyl blue （MB） was used as the model reac- tion,the effect of the calcining temperature on the photocata- lytic property of SnO1/ZnO hollow fiber materials was stud- ied. The experimental results showed that the materials copied the morphology of＇the template and was composited by SnO2 and ZnO semiconductors. The calcining temperature had obvi- ous effect on the crystalline degree, surface microstrueture, grain size and the photocatalytic activity. SnO2/ZnO hollow fi- bers obtained at the optimal calcining temperature of 650 ℃ , the decolorization efficiency of MB solution was 100% under the sunlight when the reaction time was 1 h and the materials exhibit excellent catalytic activity and reusability.