Infrared absorption property of silicon carbide-silica nanocables synthesized by ethanol pyrolysis
Abstract
A controllable synthesis method for SiC-SiO2 nanocables has been proposed. The diameter of SiC core and thickness of SiO2 shell were changed by adjusting the flow ratio between Ar dilution gas and ethanol precursor. With increasing the flow, the enhancement of 1137cm-1 peak was observed from fourier transform infrared spectroscopy (FTIR) spectra. This peak is considered to be originated from a highly disordered surface structure of SiO2 shell which was enhanced with increasing the flow. The FTIR spectra show the 910cm-1 peak which is attributed to surface phonon resonance in the nanostructure of SiC exited by p-polarized field component.
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