Open Access Nano Express

Template-free Synthesis of One-dimensional Cobalt Nanostructures by Hydrazine Reduction Route

Liying Zhang1, Tianmin Lan2, Jian Wang12, Liangmin Wei1, Zhi Yang1 and Yafei Zhang1*

Author Affiliations

1 National Key Laboratory of Nano/Micro Fabrication Technology, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Institute of Micro and Nano Science and Technology, Shanghai Jiao Tong University, 200240, Shanghai, China

2 School of Materials Science and Engineering, Shanghai Jiao Tong University, 200240, Shanghai, China

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Nanoscale Res Lett 2011, 6:58  doi:10.1007/s11671-010-9807-7

Published: 1 October 2010

Abstract

One-dimensional cobalt nanostructures with large aspect ratio up to 450 have been prepared via a template-free hydrazine reduction route under external magnetic field assistance. The morphology and properties of cobalt nanostructures were characterized by scanning electron microscopy, X-ray diffractometer, and vibrating sample magnetometer. The roles of the reaction conditions such as temperature, concentration, and pH value on morphology and magnetic properties of fabricated Co nanostructures were investigated. This work presents a simple, low-cost, environment-friendly, and large-scale production approach to fabricate one-dimensional magnetic Co materials. The resulting materials may have potential applications in nanodevice, catalytic agent, and magnetic recording.

Keywords:
Cobalt nanowires; Magnetic field assistance; Hydration hydrazine reduction