利用化学气相沉积法,以乙醇为碳源,二茂铁为催化剂前驱物,对二氯苯为添加剂,制备了Fe/Fe3C纳米线填充的碳纳米管复合材料,并通过SEM、XRD、HRTEM等分析方法对产物的形貌和微结构进行了研究。实验结果表明对二氯苯对碳纳米管的填充起决定作用,产物中Fe/Fe3C纳米线填充率可达33%;使用该复合材料制备的吸波涂层在厚度为2mm、频率为4.5GHz时有强吸收峰,厚度增加时吸收峰往低频方向移动,表明此材料有望在低频段实现对电磁波的有效吸收。
Fe/Fe3C-filled carbon nanotubes were prepared by a chemical vapor deposition process in which ethanol was used as carbon source,ferrocene was used as the catalyst precursor and dichlorobenzene was used as the additive.The morphology and microstructure of the synthesized products were examined using SEM,XRD,HRTEM,and so on.The results show that dichlorobenzene is critical for the filling of CNTs,and the filling ratio of Fe/Fe3C nanowires is as high as 33%.When the thickness of the CNTs absorber is 2mm,there is a peak of reflection loss at 4.5GHz.The peak of the reflection loss shifts to lower frequency when the thickness increases,showing that the as-grown CNTs is promising as an effective absorber in low frequency.
参考文献
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| [2] | Wenxiang Wang;Kunlin Wang;Ruitao Lv .Synthesis of Fe-filled thin-walled carbon nanotubes with high filling ratio by using dichlorobenzene as precursor[J].Carbon: An International Journal Sponsored by the American Carbon Society,2007(5):1127-1129. |
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