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在有机相中,表面活性剂聚乙烯吡咯烷酮(PVP)存在下,采用联氨还原氯化钴的化学方法制备得到钴纳米棒,并用XRD、TEM、XPS和TG-DTA对样品的组成和形貌进行表征和分析。结果表明,用该法制得的钴纳米棒直径约为50~80nm,长度约为300~500nm,具有hcp相。表面活性剂PVP在钴纳米棒的形成过程中起到软模板的作用,使钴纳米粒子沿着一定的方向生长成纳米棒。
Cobalt nanorods were prepared by hydrazine reduction of cobalt chloride in the presence of polyvinylpyrrolidone (PVP) in the organic phase. The composition and morphology of the samples were characterized by XRD, TEM, XPS and TG-DTA Characterization and analysis. The results show that the cobalt nanorods prepared by this method have a diameter of about 50-80 nm and a length of about 300-500 nm, with an hcp phase. The surfactant PVP plays a role of soft template in the formation of cobalt nanorods, so that the cobalt nanoparticles grow into nanorods in a certain direction.