微波辅助加热法在泡沫镍表面生长纳米碳管

以酸处理过的泡沫镍为催化剂前驱体及辅热材料,以菲为碳源,使用微波辅助加热法,短时间内在泡沫镍表面及内孔生长管径分布均匀、长径比较大的纳米碳管(CNTs)。使用扫描电子显微镜(SEM),X射线衍射仪(XRD)对所得产物的微观形貌和结构进行表征,并研究泡沫镍的结构、前处理用酸浓度、微波加热时间等对制备的CNTs的影响,最后提出了CNTs的生长机理。结果表明:酸浓度为6mol·L~(-1),微波时间为30s时,所得碳纳米管管径约为30nm,长度可达微米级。

Microwave-assisted Heating Method for Grow th of Carbon Nanotubes on Nickel Foam

Carbon nanotubes (CNTs ) with uniform diameters and big length-diameter ratio were formed both on the surface and the inner pores of nickel foam by microwave-assisted heating method , using nickel foam treated with HCl as catalyst precursor and auxiliary heating material ,phenanthrene as the carbon source .The micro morphology and microstructure were characterized by SEM and XRD methods .Effect of the structure of nickel foam ,concentration of HCl and micro-assisted heating time on the preparation of CNTs was studied ,the mechanism for CNTs growth was also recommended . The results show that ,when the concentration of HCl is 6mol · L -1 ,microwave-assisted heating time is 30s ,the diameter of CNTs is around 30nm ,the length is up to micrometer .