본문 바로가기
  • Home

Preparation of nanosized NiO powders by mixing acid and base nickel salts and their reduction behavior

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2010, 20(6), pp.283-288
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

Chang-Sam Kim 1 윤동훈 1 전성운 1 권혁보 2 Park, Sang Whan 1

1한국과학기술연구원
2경남대학교

Accredited

ABSTRACT

Nanosized NiO powder was prepared by mixing an acid nickel salt and a base nickel salt and their reduction behavior was studied. Ni formate was employed as an acid salt and nickel hydroxide and basic nickel carbonate as base salts. One equivalent acid salt was mixed with 9 equivalent base salt. The mixture of the formate and the carbonate produced ~100 nm spherical NiO powder by heat treatment at 750oC/2 h, but the mixture of the formate and the hydroxide gave rise to ~100 nm pseudo spherical NiO powder by heat treatment at 600oC/2 h and grew fast to give pseudo cubic crystals of 100~600 nm by heat treatment at 750oC/2 h. Reduction by hydrogen gas proceeded much faster for the one with the hydroxide than that with the carbonate to give porous body with well grown necks. Their behavior was studied by analysis of TG/DSC, XRD, and SEM.

Citation status

* References for papers published after 2023 are currently being built.