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Nano Lett. 2008 Nov;8(11):3651-5. doi: 10.1021/nl801635b. Epub 2008 Oct 9.

Synthesis and characterization of selenium-carbon nanocables.

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Area de Ciencias Naturais e Tecnologicas, Centro Universitário Franciscano-UNIFRA, 97010-032 Santa Maria, RS, Brazil.


In this letter, we report the synthesis and characterization of a novel Se-C hybrid nanostructure. X-ray diffraction data indicates a high degree of crystallinity for the nanostructured Se shell. High resolution transmission electron microscopy images show that the Se-C nanostructures consist of coaxial nanocables made of single wall carbon nanotubes, as the core, surrounded by a trigonal Selenium shell. Resonance Raman spectroscopy was used to access the properties of both the carbon nanotubes and selenium. The behavior of the radial breathing mode and the G-band indicates that the Se shell primarily covers semiconducting nanotubes. X-ray photoelectron spectroscopy show that the nanocables have a thin coverage of selenium oxide. We envisage that this system could be used in the fabrication of photonic devices as an interface between electronic and photonic materials.


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