A new method for chemical vapor deposition ofβ-SiC nanowires on granular active carbon loaded with iron nanoparticles inside the pores is developed.In this process,mesoporous active carbon was used as both a carbon s...A new method for chemical vapor deposition ofβ-SiC nanowires on granular active carbon loaded with iron nanoparticles inside the pores is developed.In this process,mesoporous active carbon was used as both a carbon source material and a template to generate nanometer-diameter catalyst particles that define the size of wires produced by vapor-liquid-solid(VLS)growth.Transmission electron microscopy reveals that the products are nanowires with several microns in length and about 10nm in diameter.Selected area electron-diffraction and energy-dispersed x-ray spectra confirm that the productor isβ-SiC.The observation of spherical nanoparticles containing iron at the end of the nanowires clearly indicates that the nanowires grow by the VLS mechanism.展开更多
基金supported by the Climbing Progam of the State Comitte of Science and Technolongy of China,Key Projet of National Fundamental Research.
文摘A new method for chemical vapor deposition ofβ-SiC nanowires on granular active carbon loaded with iron nanoparticles inside the pores is developed.In this process,mesoporous active carbon was used as both a carbon source material and a template to generate nanometer-diameter catalyst particles that define the size of wires produced by vapor-liquid-solid(VLS)growth.Transmission electron microscopy reveals that the products are nanowires with several microns in length and about 10nm in diameter.Selected area electron-diffraction and energy-dispersed x-ray spectra confirm that the productor isβ-SiC.The observation of spherical nanoparticles containing iron at the end of the nanowires clearly indicates that the nanowires grow by the VLS mechanism.
