乙二醇溶剂中纳米铜镍复合粉的制备及表征

Synthesis and Characterization of Cu-Ni Composite Nanoparticles in Ethylene Glycol

以聚乙烯吡咯烷酮(PVP)作为高分子保护剂,乙二醇为溶剂,在60℃恒温水浴中,用水合肼还原二价铜、镍盐,合成了铜镍纳米复合粉末。研究了铜镍前驱体浓度比对产物组成的影响,PVP加入量对合成铜镍复合颗粒尺寸的影响。对制得的样品用XRD,TEM进行了表征。结果表明:产物中的铜镍比随着反应物中铜镍比的增加而增加,铜镍复合纳米颗粒的粒度随着PVP浓度的增大而减小。因此,可以通过改变溶液中的Cu2+和Ni2+的比例以及PVP用量得到不同组成和粒度的铜镍复合纳米粉。

Cu Ni composite nanoparticles were successfully prepared by chemical reduction with hydrazine hydrate in ethylene glycol. XRD, TEM, EDS were employed to characterize the Cu Ni composite powders. Effects of molar ratio of Cu2＋ to Ni2＋ on the composition of the product and the mass concentration of PVP on the size of the Cu-Ni composite particles were studied. The molar ratio Cu to Ni of the product increased with the increasing of that of Cu2＋ to Ni2＋ of the reactant, and the size of the Cu-Ni composite nanoparticles decreased with the increasing of the PVP. Experiment results indicated that the composition and the size of the Cu-Ni nanoparticles could be easily controlled by changing the molar ratio of Cu2＋ to Ni2＋ and the mass concentration of PVP.