Synthesis of superfine ethanol-soluble CoO nanoparticles via discharge plasma in liquid

Qiang Chen, Toshiro Kaneko, Rikizo Hatakeyama

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Superfine cobaltous oxide nanoparticles (CoONPs) of ~2.5nm diameter were synthesized at high rate via discharge plasma operated in an aqueous solution of Co(II) acetate. Two potential routes are proposed for the CoONP formation: one is the plasma-induced electrolysis of the aqueous solution of Co(II) acetate, and the other is the oxidization of neutral Co, which is formed by the plasma-induced reduction of Co(II). In addition, the resultant CoONPs are soluble in ethanol but insoluble in water, which is attributed to the surface conjugation of functional groups of CH 3- produced by the plasma-induced electrolysis of an aqueous solution of Co(II) acetate.

Original languageEnglish
Article number096201
JournalApplied Physics Express
Volume5
Issue number9
DOIs
Publication statusPublished - 2012 Sep

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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