对不同温度煅烧下得到的电纺 ZnO 纳米纤维的形貌及结构进行了分析.以醋酸锌和聚乙烯醇(PVA)制备前驱体,采用电纺丝技术制备复合纤维,然后以400,500,600和800℃高温煅烧2 h 得到氧化锌纳米纤维.采用热重分析(TGA)、元素分析(EDS)、扫描电子显微镜(SEM)、X 射线衍射(XRD)、拉曼光谱分析(Raman)、透射电镜(TEM)等方法对得到的纤维的形貌、结构进行测试分析.未处理以及以400,600和800℃煅烧后纤维的直径分别为207,135,158和200 nm,呈先减小后增大的趋势.400,500和600℃煅烧后得到的 ZnO 晶粒尺寸分别为24．25,33．52和35．37 nm,随着温度的升高,晶粒尺寸逐渐增大.对比不同温度煅烧后得到的氧化锌纳米纤维,确定最佳煅烧温度为600℃.
The morphology and structure of ZnO fibers calcined at different temperatures were studied in this pa-per.The precursor of ZnO nanofibers was prepared by electrospinning technology using PVA and zinc acetate. The ZnO nanofibers were obtained after calcination at 400,500,600,800 ℃.Thermal gravimetric analysis (TGA),energy dispersive spectrometer (EDS),scanning electron microscope (SEM),X-ray diffraction (XRD),transmission electron microscope (TEM)and Raman were introduced to analyze the morphology and structure of the ZnO nanofibers.The diameters were reduced firstly and then increased with the rising of the calcination temperature from 400 to 800 ℃.The grain sizes of ZnO prepared at 400,500,600,800℃ were 24.25,33.52,35.37 nm,respectively,which was increased with the rising of the calcination temperature.The re-sults indicated the optimum calcinations temperature of the ZnO nanofibers was 600 ℃.
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