Tuning oxygen vacancies on mesoporous ceria nanorods by metal doping: Controllable magnetic property
Tuning oxygen vacancies on mesoporous ceria nanorods by metal doping: Controllable magnetic property
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DOI：
10.1016/j.apsusc.2018.05.216
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发表时间：
2018-10
影响因子：
6.7
通讯作者：
Zhourong Xiao;Shuangshang Ji;Yueting Li;Fang Hou;Haocui Zhang;Xiangwen Zhang;Li Wang;Guozhu Li
中科院分区：
文献类型：
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作者：
Zhourong Xiao;Shuangshang Ji;Yueting Li;Fang Hou;Haocui Zhang;Xiangwen Zhang;Li Wang;Guozhu Li
通过简便的水热法成功合成了掺杂各种金属（Zr、Zn 和 Tb）的氧化铈纳米棒。采用TG/DTG、XRD、氮气吸附-解吸、SEM、TEM/HRTEM、Raman、XPS 对合成材料进行表征。获得了尺寸均匀、氧空位不同的各种金属掺杂二氧化铈纳米棒。 XRD 和 HRTEM 的结果表明，掺杂剂物质很好地融入了二氧化铈的晶格中。通过氮气吸附-解吸测定了这些纳米棒中介孔的存在。拉曼和XPS表征表明，金属掺杂剂的种类和数量可以极大地影响氧空位的数量。振动样品磁力计装置用于说明这些材料的铁磁特性。提出了氧空位与磁性能之间的关系。结果表明，各种氧化铈纳米棒的氧空位量和饱和磁化强度（Ms）值之间存在良好的校正。
Ceria nanorods doped by various metals (Zr, Zn and Tb) have been successfully synthesized by a facile hydrothermal method. TG/DTG, XRD, nitrogen adsorption-desorption, SEM, TEM/HRTEM, Raman, XPS are employed to characterize the as-synthesized materials. Various metal-doped ceria nanorods with uniform sizes and different oxygen vacancies have been obtained. The results of XRD and HRTEM indicate that dopant species are well incorporated into the lattice of ceria. The presence of mesoporous in these nanorods has been determined by nitrogen adsorption-desorption. Raman and XPS characterizations show that the species and amount of metal dopant can greatly affect the amount of oxygen vacancies. Vibrating sample magnetometer device is used to illustrate ferromagnetic properties of these materials. The relationship between oxygen vacancies and magnetic properties has been presented. Results show that there is a good correction between the amount of oxygen vacancies and the saturation magnetization (Ms) value for various ceria nanorods.