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Carbon nanofibers have been attracted many attentions for their potential applications in nanocomposites and electromagnetic wave-absorbing materials due to their remarkable mechanical,electrical and other properties.Ethanol as carbon source not only possesses low toxicity,easier storage and transportation,but also does not tend to form amorphous carbon on dissociation.So in our experiments,we use ethanol as carbon source to synthesize carbon nanofibers.In this paper,we report ethanol catalytic chemical vapor deposition (ECCVD) for synthesizing carbon nanofibers.We utilized ferrocene as catalyst precursor to synthesize carbon nanofibers by ethanol chemical vapor deposition.