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以含钴介孔分子筛为催化剂、乙醇为碳源,采用CVD法制备碳纳米管(CNTs)。通过原位合成法制备一系列不同碳纳米管含量的碳纳米管/羟基磷灰石(CNTs/HA)复合材料。分别采用XRD、FTIR、TEM、N2吸附-脱附和Raman光谱等分析手段,对所合成CNTs/HA复合材料的晶相、结构、形貌和比表面积等进行了表征。同时研究了碳纳米管的添加量对所合成CNTs/HA复合材料形貌的影响。XRD与Raman结果表明,所得CNTs/HA复合粉体中仅有CNTs与HA两种物相,纯度较高,结晶度较好;TEM结果显示,CNTs/HA复合材料中CNTs表面均匀包裹着一层纳米级的针状HA晶粒,两者形成了较强的界面结合,且当CNTs与HA的质量比为3∶17时,CNTs与HA形成最佳结合状态;N2吸附-脱附表征结果表明,与HA的比表面积相比,CNTs/HA复合材料具有较高比表面积。
Using cobalt-containing mesoporous molecular sieve as catalyst and ethanol as carbon source, carbon nanotubes (CNTs) were prepared by CVD method. A series of CNTs / hydroxyapatite (CNTs / HA) composites with different content of carbon nanotubes were prepared by in situ synthesis. The crystal phase, structure, morphology and specific surface area of the synthesized CNTs / HA composites were characterized by means of XRD, FTIR, TEM, N2 adsorption-desorption and Raman spectroscopy. At the same time, the effect of the amount of carbon nanotubes on the morphology of the synthesized CNTs / HA composites was also studied. The results of XRD and Raman show that CNTs / HA composite powders have only two phases of CNTs and HA, which have high purity and good crystallinity. The TEM results show that the CNTs / HA composites are uniformly coated with a layer of CNTs The nano-sized needle-shaped HA grains formed strong interfacial bonding. CNTs and HA formed the best bonding state when the mass ratio of CNTs to HA was 3:17. The result of N2 adsorption-desorption showed that , CNTs / HA composites have higher specific surface area than the specific surface area of HA.