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: Contribution to journalArticlepeer-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 - 1 Apr 2012


  • Co O
  • Foam
  • Nanowire
  • Toluene
  • VOCs

Cite this