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采用微波辅助多元醇还原法一步制备了纳米镍和包覆镍的多壁碳纳米管.利用拉曼光谱仪、透射电子显微镜、X射线衍射仪和振动样品磁强计等测试手段对产物的拉曼光谱、形貌、物相和磁性进行分析.结果表明,当有黑色悬浮物镍出现,继续反应,由于镍金属的微波涡流效应产生的电火花,可合成碳纳米管.研究发现,所制备的碳纳米管是多壁的,管径约为18～20nm.该镍/碳纳米管核壳结构的磁滞回线有别于单一的纳米镍.
The nano-nickel and multi-walled carbon nanotubes coated with nickel were prepared by microwave-assisted polyol reduction method.The Raman spectra of the products were obtained by Raman spectroscopy, transmission electron microscopy, X-ray diffraction and vibrating sample magnetometer Spectrum, morphology, phase and magnetic properties were analyzed.The results show that when there is a black suspension of nickel appeared to continue the reaction, because of nickel eddy current eddy current effect can produce carbon nanotubes can be synthesized.It was found that the prepared The carbon nanotubes are multi-walled and have a diameter of about 18 to 20 nm. The hysteresis loop of the nickel / carbon nanotube core-shell structure is different from that of a single nano-nickel.