Synthesis and field emission properties of titanium carbide nanowires

Single crystalline TiC nanowires have been synthesized through a chloride-assisted carbothermal reduction process using active carbon, TiO2 and NaCl powders as precursors and carbon-coated cobalt or nickel nanoparticles as a catalyst. The products were characterized by x-ray diffraction, electron mi...

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Published inNanotechnology Vol. 18; no. 14; pp. 145615 - 145615 (6)
Main Authors Huo, Kaifu, Hu, Yemin, Ma, Yanwen, Lü, Yinong, Hu, Zheng, Chen, Yi
Format Journal Article
LanguageEnglish
Published IOP Publishing 11.04.2007
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Summary:Single crystalline TiC nanowires have been synthesized through a chloride-assisted carbothermal reduction process using active carbon, TiO2 and NaCl powders as precursors and carbon-coated cobalt or nickel nanoparticles as a catalyst. The products were characterized by x-ray diffraction, electron microscopy, energy-dispersive x-ray spectroscopy and x-ray photoelectron spectroscopy. The TiC nanowires have a face-centred cubic structure with a typical diameter of 20-50 nm and a length of up to a few microns. The formation of the product could be well correlated with the characteristic core-shell structure of the catalyst used. The field emission of the TiC nanowires follows the conventional Fowler-Nordheim behaviour and shows a low turn-on field of about 7.1 V mum-1 and good emission stability.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/18/14/145615