Abstract
A novel solid-state reaction involving [Ni6(N2H4)6(SO4)4(OH)2(H2O)8](SO4)(H2O)10 has been used to prepare nickel nanoparticles. The reaction of [Ni6(N2H4)6(SO4)4(OH)2(H2O)8](SO4)(H2O)10 via NaOH, KOH, and/or Na2CO3 as a reactant was carried out in the solid state. The complex undergoes an intramolecular two-electron oxidation–reduction reaction at room temperature, producing metallic nickel nanoparticles (Ni1, Ni2 and Ni3). The aforementioned complex contains nickel(II) that is an oxidizing agent and also hydrazine ligand as a reducing agent. Other products produced include sodium azide and ammonia gas. The nickel metal nanoparticles were characterized using X-ray powder diffraction, scanning electron microscopy, and vibrating sample magnetometer. The synthesized nickel nanoparticles have similar morphologies; however, their particle size distributions are different.
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The authors are grateful to University of Kashan for supporting this work by Grant No. 256736/6.
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Kahani, S.A., Khedmati, M. The preparation of nickel nanoparticles through a novel solid-state intramolecular reaction of polynuclear nickel(II) complex. J Nanopart Res 16, 2544 (2014). https://doi.org/10.1007/s11051-014-2544-6
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DOI: https://doi.org/10.1007/s11051-014-2544-6