Nanotube arrays of Zn/Co/Fe composite oxides assembled in porous anodic alumina and their magnetic properties

作者：Wu Hong Yu; Zhao Yun; Jiao Qing Ze^*

来源：Journal of Alloys and Compounds, 2009, 487(1-2): 591-594.

DOI：10.1016/j.jallcom.2009.08.018

• Nanotubes
• Anodic aluminum oxide template
• Composite oxide
• Magnetic property

Zn/Co/Fe composite oxide nanotubes were successfully synthesized using a 1:2:1 molar precursor solution of Zn(NO(3))(2), Co(NO(3))(2) and Fe(NO(3))(3) and anodic aluminum oxide as the substrate. To obtain the arrays of Zn/Co/Fe oxide nanotubes inside the anodic aluminum oxide templates, the precursor with template was treated in a muffle at 500 C for 1 h. Characterization of the nanotubes using scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM) indicated that they are about 10 mu m in length, with an outer diameter of about 200 nm and a wall thickness of about 30 nm. The grains that formed the nanotubes were about 10-20 nm in diameter. The products were also characterised by X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). Magnetization measurement was carried out using a vibrating sample magnetometer (VSM) at room temperature and showed that the coercivity of Zn/Co/Fe oxide nanotubes was small, similar to 30 Oe. Therefore, Zn/Co/Fe oxide nanotubes could be easily prepared using this method and might be applied as catalysts, magnetic materials and microwave absorbers.

• 出版日期2009-11-13
• 单位北京理工大学