Ni nanoparticles: Study of particles formation and agglomeration

• Main Authors: Azizan, A. (Author), Nik Roselina, N.R (Author)
• Format: Article
• Language: English
• Published: Elsevier Ltd 2012
• Subjects: Agglomeration; Hydrazine; Nanoparticles; Nanoscale materials; Nickel; Polyol
• Online Access: View Fulltext in Publisher; View in Scopus

 We report the synthesis of nikel (Ni) nanoparticles produced by modified polyol method using N2H4.6H2O and ethylene glycol (EG) without any protective agent. The synthesis was conducted in 1 hour of heating at 60©C. Transmission Electron Microscopy (TEM), X-ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FE-SEM) have been used to characterize the Ni nanoparticles. TEM results showed that as-resulted Ni nanoparticles were almost spherical with size between 2 nm to 600 nm. XRD analysis indicated that the as-synthesized nanoparticles were Ni nanoparticles of face-centered cubic 〈fcc〉 crystal structure. Reaction rate increased as molar ratio of N2H4/Ni2+ increased with different degree of agglomeration. Particles produced at the highest molar ratio showed the highest degree of agglomeration as compared to other lower molar ratios. Also, we speculate the reduction of Ni2+ and formation of by product though colour changes of the reaction. © 2012 The Authors.