Study of effect of temperature on the synthesis of carbon nanotubes by floating catalyst method
Keywords:
Carbon nanotubes, Floating catalyst method, Double stage CVD, Effect of temperatureAbstract
Carbon nanotubes (CNTs) were grown by floating catalyst method using acetylene as carbon precursor and ferrocene as catalyst precursor. The CNTs were grown in the temperature range of 700 - 1150°C. The prepared CNTs were purified by acid treatment and air oxidation methods. The purified CNTs were characterized by scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. The purity of CNTs was determined by thermal analysis and X-ray diffraction method. The yield, diameter and length of grown CNTs were same at all temperatures. The crystalline perfection of CNTs increases as the temperature increases. Our results indicated that the synthesis temperature could affect the degree of graphitization of CNTs.Downloads
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