Synthesis of Co 3O 4 nanowire arrays supported on Ni foam for removal of volatile organic compounds

K. N. Hui, Cui Lei Yin, K. S. Hui, J. Y. Lee, M. Li, S. K. Lee, K. L. Tsui, C. Y.H. Chao, C. W. Kwong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


Crystalline Co 3O 4 nanowire arrays freely supported on Ni foam are successfully synthesized using a template-free method. The effects of reaction time, concentration of reactants, and temperature on the morphology of the nanowires are studied. The results indicate that uniform Co 3O 4 nanowires could be synthesized at 90 °C, and a transformation of the samples' morphology from nanoparticles to nanowires to microrods is observed by controlling the concentration of the reactants. The well-ordered nanowires synthesized under the selected reaction conditions are composed of spinel Co 3O 4 with diameters of 500∼580 nm and lengths of 6-8 μm. These nanowires show good catalytic activity for the ozone catalytic oxidation of toluene.

Original languageEnglish
Pages (from-to)3563-3566
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Issue number4
Publication statusPublished - 2012


  • Co O
  • Foam
  • Nanowire
  • Toluene
  • VOCs

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics


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