固相反应制备纳米氧化铜

Solid-state chemical preparation of the nano copper oxide

以CuCl2·2H2O、Cu(NO3)2·3H2O与NaOH为反应物,在室温下通过固相化学反应合成CuO纳米粉体的两个反应体系,用透射电镜(TEM)和X射线衍射(XRD)对产物的组成、大小及形貌进行表征.结果表明:经室温固相化学反应所制得的CuO为单斜晶纳米CuO.另外,还从研磨方式、反应配比、反应体系、分散时间、及表面活性剂用量等方面对影响产物粒径大小及分散性的因素进行了探讨以下为所得结论的简要介绍:①反应速度是影响粒径大小的主要因素;②反应配比对产物的均匀程度及分散性有影响;③超声波分散可改变颗粒的分散程度;④表面活性剂的加入对改变颗粒的分散性有明显作用,其用量对粒径大小的影响存在最佳值.

Nanopowder Cuo was synthesized by solid state reaction of NaOH with CuCl2·2H2O and Cu(NO3)2·3H2O at room temperature. The products were character rized by XRD and TEM. It is shown that all the products prepared from solid state reaction of Cu salts with NaOH are in monociline structure with nanosize. Moreover, the effect of grinding styly, ratio of reactants, reaction system, scatter time and the quantities of surfactant on the particle size anddispersion have been studied. The following is the synopsis introduction of the conclusion. ① Reaction speed is a main factor of affecting particle size. ② Ratio of reactants affects even defree and dispersion of the products. ③ Ultrasonic dispersion can change dispersion of particle. ④ Surfactant brings clear function on particle dispersion and the optimum quantities of surfactant influencing the diameter of the particle exist.