【摘要】 采用同轴静电纺丝技术,以硝酸铈、硝酸锌、聚乙烯吡咯烷酮、N,N-二甲基甲酰胺、甘油和氯仿为原料,制备了ZnO@CeO2同轴纳米电缆.用差热-热重分析、X射线衍射、扫描电镜、透射电镜和能谱仪对样品进行了表征.结果表明,所得产物为ZnO@CeO2同轴纳米电缆,以晶态CeO2为壳层,晶态ZnO为芯层,电缆直径约90 nm,芯层直径约60 nm,壳层厚度约15 nm,电缆长度大于300μm,并分析了其形成机理.更多还原

【Abstract】 ZnO@CeO2 coaxial nanocables were successfully prepared by coaxial electrospinning,using cerous nitrate,zinc nitrate,polyvinyl pyrrolidone,N,N-dimethylformamide,glycerin and chloroform as starting materials.The samples were characterized by thermogravimetry and differential thermal analysis,X-ray diffractometry,scanning electron microscopy,transmission electron microscopy and energy dispersive spectroscopy techniques.The results show that ZnO@CeO2 coaxial nanocable has a diameter of ca.90 nm,core diameter of ca.60 nm and shell thickness of ca.15 nm.The nanocable has a core of crystalline ZnO and a shell of crystalline CeO2.The length of the ZnO@CeO2 nanocables is greater than 300 μm.The formation mechanism of the ZnO@CeO2 nanocables was preliminarily investigated.更多还原