We present the structural and spectroscopy characterization of carbon nanotubes (CNTs) grown by the spray pyrolysis technique, using ferrocene as catalyzer and cyclohexanol as the carbon source, and synthetized in a temperature range of 750 to 1000°C. The structural morphology was observed using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The spectroscopy response was obtained by UV-Vis and Raman spectroscopy. We observed morphological changes and found that the product yield seems to increase with temperature. The optical characterization corroborated the presence of transitions and Van Hove singularities as result of possible electrical conductivity changes.

中文翻译：

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以环己醇为碳源在不同温度下生长的碳纳米管的显微镜和光谱学表征

我们介绍了使用二茂铁作为催化剂，环己醇作为碳源，通过喷雾热解技术生长的碳纳米管（CNT）的结构和光谱学表征，并在750至1000°C的温度范围内进行了合成。使用扫描电子显微镜（SEM）和透射电子显微镜（TEM）观察结构形态。通过UV-Vis和拉曼光谱获得光谱响应。我们观察了形态变化，发现产物收率似乎随温度增加。光学表征证实了可能的电导率变化导致的跃迁和范霍夫奇异性的存在。