title: Self-Assemblies of Acicular Hollow Fe/C Nanostructures.
abstract: Self-assemblies of acicular hollow Fe/C structures were synthesized using D-glucose monohydrate and ferric chloride as precursors by a simple hydrothermal process followed by carbonization at 800 °C. The self-assembled structures with an overall diameter of 15~20 µm composed of radially formed hollow needles from a central core with an average diameter of ca. 1 µm and a length up to 10 µm. The end of the needles was revealed to be a awl shape with a hollow structure formed during the self-assembly process and the subsequent heat treatment. The hollow structure was probably caused by the Kirkendall effect at 800 °C. The materials exhibit ferromagnetic characteristic with saturation magnetization (Ms), remanent magnetization (Mr), and coercivity (Hc) of 22.2 emu/g, 3 emu/g, and 151.22 Oe, respectively, with Ms much lower than that of Fe3O4.
authors.forename: Wangchang
authors.initials: W
authors.lastname: Li
authors.forename: Xiaojing
authors.initials: X
authors.lastname: Qiao
authors.forename: Mingyu
authors.initials: M
authors.lastname: Li
authors.forename: Qiuyu
authors.initials: Q
authors.lastname: Zheng
authors.forename: Qingguo
authors.initials: Q
authors.lastname: Ren
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Zhu
authors.forename: H X
authors.initials: HX
authors.lastname: Peng