• Reduction mechanism of Ni2+ into Ni nanoparticles prepared from different precursors: Magnetic studies

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/072/03/0577-0586

    • Keywords

       

      Ni nanoparticles; ethylene glycol; cyclic voltmetery; reducing agent; complex.

    • Abstract

       

      The reduction mechanism of Ni2+ into Ni particles using different precursors such as NiCl2 solution, NiO powder and Ni[(NH3)6]Cl2 complex has been established. Different particle sizes can be designed from these precursors. The smallest crystallite size (12 nm) can be obtained from Ni[(NH3)6]Cl2 complex in the presence of the stabilizing ligand (oleic acid). The field-cooled (FC) and zero-field-cooled (ZFC) magnetization of Ni particles obtained from Ni[(NH3)6]Cl2 complex in the temperature range 5–300 K established the ferromagnetic interaction up to 300 K. The magnetization values at three different temperatures 5, 70 and 300 K are 50.2, 49.5 and 45.5 Oe respectively at $3 \times 10^{4}$ Oe applied field and such values are less than that of the bulk value. The Curie temperature $(T_{c})$ decreases slightly with the decrease of particle size. This study will provide guidance in the preparation of metal nanoparticles from different precursors.

    • Author Affiliations

       

      R S Ningthoujam1 N S Gajbhiye2 Sachil Sharma2

      1. Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
      2. Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India
    • Dates

       
  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.