Carbon nanofibers are synthesised via chemical vapour deposition of acetylene as carbon source through using water soluble catalysts. The new water soluble catalyst is prepared by supporting the copper on sodium chloride salt. Copper acetate and copper nitrate salts are used for preparing catalysts through impregnation method. The yield of carbon deposits using the catalyst prepared by copper acetate is almost twenty times higher than the one prepared by copper nitrate precursor. The X-ray diffraction pattern and field emission scanning electron microscopy (FESEM) images confirm the formation of CuO in the catalyst after calcination process. The growth time for carbon material is 15 min. The FESEM images show the growth of helical and straight carbon nanofibers on the catalysts with metal loading of 5 wt% at 600, 650 and 680 °C. The results showed that the morphology of the carbon deposited on the catalyst depends on both the amount of metal loaded on the catalyst and reaction temperature, while there is a significant interaction between them. However, fishbone carbon nanofibers with diameters less than 100 nm are deposited on the catalysts with metal loading of 1 wt% at 650 °C.

中文翻译：

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水溶性氯化钠负载型催化剂上螺旋和直碳纳米纤维的合成

碳纳米纤维是通过使用水溶性催化剂通过乙炔的化学气相沉积作为碳源而合成的。通过将铜负载在氯化钠盐上制备新的水溶性催化剂。乙酸铜和硝酸铜盐用于通过浸渍法制备催化剂。使用由乙酸铜制备的催化剂的碳沉积的产率几乎是由硝酸铜前体制备的碳的产率的二十倍。X射线衍射图和场发射扫描电子显微镜（FESEM）图像证实了煅烧过程后催化剂中CuO的形成。碳材料的生长时间为15分钟。FESEM图像显示，在600、650和680°C下，金属负载量为5 wt％时，螺旋形和直碳纳米纤维在催化剂上的生长。结果表明，沉积在催化剂上的碳的形态取决于负载在催化剂上的金属量和反应温度，而它们之间存在显着的相互作用。但是，直径小于100 nm的鱼骨碳纳米纤维在650°C的金属负载量为1 wt％的情况下沉积在催化剂上。