引用本文:
张宏晔, 嵇天浩, 李玲龙, 齐兴义, 刘奕帆, 蔡建旺, 杜海燕, 孙家跃. 室温铁磁性Ni2+掺杂TiO2纳米带的制备与表征[J]. 物理化学学报,
2008, 24(04): 607-611.
doi:
10.1016/S1872-1508(08)60027-3
Citation: ZHANG Hong-Ye, JI Tian-Hao, LI Ling-Long, QI Xing-Yi, LIU Yi-Fan, CAI Jian-Wang, DU Hai-Yan, SUN Jia-Yue. Preparation and Characterization of Room-temperature Ferromagnetic Ni-doped TiO2 Nanobelts[J]. Acta Physico-Chimica Sinica, 2008, 24(04): 607-611. doi: 10.1016/S1872-1508(08)60027-3
Citation: ZHANG Hong-Ye, JI Tian-Hao, LI Ling-Long, QI Xing-Yi, LIU Yi-Fan, CAI Jian-Wang, DU Hai-Yan, SUN Jia-Yue. Preparation and Characterization of Room-temperature Ferromagnetic Ni-doped TiO2 Nanobelts[J]. Acta Physico-Chimica Sinica, 2008, 24(04): 607-611. doi: 10.1016/S1872-1508(08)60027-3
室温铁磁性Ni2+掺杂TiO2纳米带的制备与表征
摘要:
通过水热离子交换方法, 制得不同含量的过渡金属离子Ni2+掺杂的、锐钛矿型的TiO2纳米带. 使用X射线衍射(XRD), 扫描电子显微镜(SEM), 透射电子显微镜(TEM), 高分辨透射电子显微镜(HRTEM), X射线光电子能谱(XPS), 傅立叶变换红外(FTIR)光谱和磁性测试等手段对样品进行了详尽的表征. 结果表明, 经过离子交换, Ni2+离子进入到了TiO2纳米带的晶格中, 其中并没有形成金属Ni团簇或纳米颗粒. 此外, 磁性测试的结果表明, 实验制备的Ni-TiO2样品具有室温铁磁性和磁滞回线特性, 并且, 由于TiO2纳米带中Ni2+离子有较好的分散性, 在相同的外磁场条件下, 样品的磁化强度随着掺杂Ni2+含量的增加而增大.
English
Preparation and Characterization of Room-temperature Ferromagnetic Ni-doped TiO2 Nanobelts
Abstract:
Ni-doped anatase TiO2 nanobelts (NBs) with different Ni2+ contents were simply prepared by combining ion-exchange with hydrothermal treatment. They were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR), and magnetic measurement techniques. The results showed that Ni2+ cations doped into the TiO2 lattice and no metallic nickel clusters or nanoparticles could be found. The magnetic results demonstrated that the prepared Ni-doped TiO2 samples had complex magnetic mechanism including room-temperature ferromagnetic and paramagnetic behaviors, and with the increase of Ni2+ content, the magnetization also increased under the same applied field owing to uniform distribution of Ni2+ ions in TiO2 nanobelts.
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