Decorating Mg/Fe oxide nanotubes with nitrogen-doped carbon nanotubes

作者：Cao Yong^*; Jiao Qingze; Zhao Yun; Dong Yingchao

来源：Journal of Alloys and Compounds, 2011, 509(38): 9372-9376.

DOI：10.1016/j.jallcom.2011.07.039

• Oxide nanotubes
• Nitrogen-doped carbon nanotubes
• Magnetic property

Mg/Fe oxide nanotubes decorated with nitrogen-doped carbon nanotubes (CN(x)) were fabricated by catalytic chemical vapor deposition of ethylenediamine on the outer surface of oxide nanotubes. Mg/Fe oxide nanotubes were prepared using a 3: 1 molar precursor solution of Mg(NO(3))(2) and Fe(NO(3))(3) and anodic aluminum oxide as the substrate. The obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and vibrating sample magnetometer (VSM). The XRD pattern shows that the oxide nanotubes are made up of MgO and Fe(2)O(3). TEM and SEM observations indicate the oxide nanotubes are arrayed roughly parallel to each other, and the outer surface of oxide nanotubes are decorated with CN(x). XPS results show the nitrogen-doped level in CN(x) is about 7.3 at.%. Magnetic measurements with VSM demonstrate the saturated magnetization, remanence and coercivity of oxide nanotubes are obvious improved after being decorated with CN(x).

• 出版日期2011-9-22
• 单位北京理工大学; 华北水利水电大学