Self Assembly of Nickel Nanospheres into Nanoplates, Assisted by Hydrazine Hydrate
Nickel nanostructures composed of intercrossed nanoplates have been prepared by a one-pot hydrazine reduction process without use of any surfactant or external magnetic field, in which ionised nickel ions are reduced by hydrazine. XRD analysis indicated that the as-synthesized nanoparticles were pure Ni with face-centered cubic (fcc) crystal structure. Scanning electron microscope (SEM) images show the formation of nickel nanoplates that have a narrow size distribution. Vibrating sample magnetometer (VSM) was also used for the characterization of Ni nanoplates. The assynthesized nickel nanoplates were highly polycrystalline and exhibited large coercivity as compared to bulk nickel. The size of the nanoplates can be changed by altering the hydrazine hydrate concentration. This synthetic protocol may be extended to the preparation of other magnetic nanoparticles.
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Document Type: Research Article
Affiliations: Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai 400076, Mumbai, India
Publication date: August 1, 2017
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