ABSTRACT The growth of carbon nanofibers (CNFs) using C60, graphite-carbon and boron powders via ... more ABSTRACT The growth of carbon nanofibers (CNFs) using C60, graphite-carbon and boron powders via the ultrasonic spray pyrolysis method of ethanol is reported. CNFs of various morphologies were observed with different powders. Kinked CNFs of about 100nm were produced while using a mixture of C60 particles and ethanol as precursors, whereas straight CNFs were obtained using graphite-carbon and boron powders as catalysts. Element analysis measurement of the as-produced CNFs shows that the CNFs synthesized using C60 and graphite powder have the carbon particles on the tip. When boron powders were added in ethanol, boron related materials were examined at the tip of the CNFs. The present study indicates that the clusters composed of carbon and boron related materials act as nucleating sites for CNF formation.
We synthesized the core-shell Si/carbon nanofibers with diameters of 200–300 nm using ultrasonic ... more We synthesized the core-shell Si/carbon nanofibers with diameters of 200–300 nm using ultrasonic spray pyrolysis with a phosphorus/ethanol mixture. High-resolution transmission electron microscopy (HRTEM) and energy-dispersive spectroscopy (EDS) investigations confirmed the core-shell structure, which consisted of a core of Si and a shell of amorphous carbon. The phosphorus atoms corroded the entire silicon substrate surface, and the Si-P liquid-catalyzed the solid-liquid-solid mechanism is proposed to explain the growth of the core-shell Si/carbon nanofibers.
2008 International Conference on Electrical and Computer Engineering, 2008
In the present work we have synthesized low density aligned carbon nanotubes using ethanol as a p... more In the present work we have synthesized low density aligned carbon nanotubes using ethanol as a precursor and ferrocene as a catalyst by simple thermal chemical vapor deposition (CVD) method on silicon substrates. The synthesis involves the pyrolysis of ethanol/ ferrocene solutions. Mist of the hydrocarbon/catalyst is produced by medical nebulizer and nitrogen gas is used as the carrier to
ABSTRACT The growth of carbon nanofibers (CNFs) using C60, graphite-carbon and boron powders via ... more ABSTRACT The growth of carbon nanofibers (CNFs) using C60, graphite-carbon and boron powders via the ultrasonic spray pyrolysis method of ethanol is reported. CNFs of various morphologies were observed with different powders. Kinked CNFs of about 100nm were produced while using a mixture of C60 particles and ethanol as precursors, whereas straight CNFs were obtained using graphite-carbon and boron powders as catalysts. Element analysis measurement of the as-produced CNFs shows that the CNFs synthesized using C60 and graphite powder have the carbon particles on the tip. When boron powders were added in ethanol, boron related materials were examined at the tip of the CNFs. The present study indicates that the clusters composed of carbon and boron related materials act as nucleating sites for CNF formation.
We synthesized the core-shell Si/carbon nanofibers with diameters of 200–300 nm using ultrasonic ... more We synthesized the core-shell Si/carbon nanofibers with diameters of 200–300 nm using ultrasonic spray pyrolysis with a phosphorus/ethanol mixture. High-resolution transmission electron microscopy (HRTEM) and energy-dispersive spectroscopy (EDS) investigations confirmed the core-shell structure, which consisted of a core of Si and a shell of amorphous carbon. The phosphorus atoms corroded the entire silicon substrate surface, and the Si-P liquid-catalyzed the solid-liquid-solid mechanism is proposed to explain the growth of the core-shell Si/carbon nanofibers.
2008 International Conference on Electrical and Computer Engineering, 2008
In the present work we have synthesized low density aligned carbon nanotubes using ethanol as a p... more In the present work we have synthesized low density aligned carbon nanotubes using ethanol as a precursor and ferrocene as a catalyst by simple thermal chemical vapor deposition (CVD) method on silicon substrates. The synthesis involves the pyrolysis of ethanol/ ferrocene solutions. Mist of the hydrocarbon/catalyst is produced by medical nebulizer and nitrogen gas is used as the carrier to
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Papers by Jianhui Zhang