Simple controlled synthesis of three kinds of large-scale CeO2 nanosheets on optical fiber and their enhanced optical and magnetic performances
Simple controlled synthesis of three kinds of large-scale CeO2 nanosheets on optical fiber and their enhanced optical and magnetic performances
复制标题
光纤上三种大尺寸CeO2纳米片的简单控制合成及其增强的光磁性能
DOI：
10.1007/s10854-018-9519-9
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Yu Benli
中科院分区：
文献类型：
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作者：
Wang Jian;Cao Zhigang;Zhang Guosheng;Wang Rui;Wang Jun;Guan Yong;Yu Benli
在这项工作中，三种不同类型的CeO2纳米片的光纤已经有目的地合成了一个简单而有效的水热技术。用X射线衍射仪、扫描电子显微镜、拉曼光谱仪、荧光分光光度计和振动样品磁强计对样品进行了表征。结果表明，随着聚乙烯吡咯烷酮浓度的降低，CeO2的形貌由月饼状逐渐转变为心形，再转变为飞镖状，同时CeO2纳米片中出现了大量的Ce3+离子和氧空位。XRD分析表明，所得纳米片均为立方萤石结构的纯氧化铈。样品的不同形貌以及表面Ce3+离子和氧空位的存在，导致样品的光致发光发射带变宽，室温铁磁性增强。
In this work, three different kinds of CeO2 nanosheets on the optical fiber have been purposefully synthetized by a simple and efficient hydrothermal technology. These CeO2 nanosheets were examined by X-ray diffractometer, scanning electron microscope, Raman spectrometer system, fluorescence spectrophotometer and vibrating sample magnetometer. The results show that the morphology of the obtained CeO2 samples gradually transforms from mooncake-like to heart-like, then to dart-like with the decrease of the polyvinyl pyrrolidone concentration, and a number of Ce3+ ions and oxygen vacancies arise in the obtained CeO2 nanosheets. The XRD patterns show that all the obtained nanosheets are pure ceria with cubic fluorite structure. The different morphology of samples as well as the existence of Ce3+ ions and oxygen vacancies in the surface can lead to wider photoluminescence emission band and an enhancement of room-temperature ferromagnetism.