以Fe/SiO2粉状物作催化剂用化学沉积法裂解乙炔制备出无序多壁碳纳米管,用TEM、XRD和DSC-TGA分析了反应温度对碳纳米管的影响.实验结果表明,反应温度分别为600、700和800℃时,制备出碳纳米管的直径相应为12～20、15～25和33～66nm,即碳纳米管的直径随着反应温度的升高而增大.同时随着反应温度的提高碳纳米管的石墨化程度也有明显的提高.因此碳纳米管的直径、石墨化程度等结构特性可以用反应温度来加以控制.
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