【摘要】 以硝酸铈为铈源,聚乙烯吡咯烷酮为表面活性剂,在碱性水相条件下制备CeO2纳米微晶。用XRD、SEM和TEM对产物进行表征,结果显示得到的CeO2纳米微晶具有立方晶型结构,分散性好,直径为10～20nm。此外,用紫外-可见分光光度计对样品的紫外吸收性质进行了考察。更多还原

【Abstract】 The CeO2 crystals were synthesized by a solution method using Ce(NO3)3·6H2O and polyvinylpyrrolidone(PVP) as precursors.X-ray powder diffraction,field emission scanning electron microscopy and transition electron microscopy were used to characterize the obtained samples.The results showed that cubic crystalline CeO2 nanoparticles of 10~20nm in size and with good monodispersity were obtained using this method.In addition,the UV absorption properties of the CeO2 nanoparticles were studied by UV-Vis spectroscopy.更多还原