Novel Iron-oxide Catalyzed CNT Formation on Semiconductor Silicon Nanowire
An aqueous ferric nitrate nonahydrate (Fe(NO3)3.9H2O) and magnesium oxide (MgO) were mixed and deposited
on silicon nanowires (SiNWs), the carbon nanotubes (CNTs) formed by the concentration of Fe3O4/MgO catalysts
with the mole ratio set at 0.15:9.85 and 600°C had diameter between 15.23 to 90nm with high-density distribution of CNT
while those with the mole ratio set at 0.45:9.55 and 730°C had diameter of 100 to 230nm. The UV/Vis/NIR and FT-IR
spectroscopes clearly confirmed the presence of the silicon-CNTs hybrid structure. UV/Vis/NIR, FT-IR spectra and FESEM
images confirmed the silicon-CNT structure exists with diameters ranging between 15-230nm. Thus, the study demonstrated
cost effective method of silicon-CNT composite nanowire formation via Iron-oxide Catalyze synthesis.
Keywords: High-density, hybrid structure, iron-oxide catalyze, SiNWs, silicon-CNT structure.
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