CuO纳米晶的一步超声室温固相合成及表征

Solid synthesis and characterization of Nanocrystalline CuO in one-step under ambient temperature and ultrasonication

在室温条件和超声波作用下,通过固相化学反应一步合成了CuO纳米晶,用粉末X射线衍射(XRD)及电子衍射法(ED)分析了固相产物的物相,用透射电镜(TEM)观测粒子的大小、形貌、粒径及粒径分布.结果表明,产物为颗粒大小均匀、晶粒形貌为近似球形粒状,平均粒径约为20 nm的纳米晶,产率为93.1%.改变反应物、反应物配比、掺入惰性物质、加入微量溶剂或表面活性剂、研磨不同的时间等固相反应条件对合成CuO纳米晶的晶粒形貌、粒度和粒径分布有一定影响.

Under ambient temperature and ultrasonication, the CuO nanocrystallite is synthesized in one-step by solid-state reaction. The solid phase is characterized by powder X-ray diffraction （XRD） and electron diffraction （ED）. The particle size, its distribution, and morphology of the prepared nanocrystallite are observed by transmission electron microscopy （TEM）. The resulting particle sizes are relatively uniform, the morphology of the crystal is spherical, and the average particle diameter is about 20 nm, and the yield rate of nanocrystalline CuO is approximately 93.1%. Furthermore, during the synthesis of nanocrystalline CuO varying the solid-state reaction conditions such as the types of reactants, matching proportion of reactants, additions of inert substance, addition of trace solvents or surfactants and porphyrization time may influence the morphology, particle size and size distribution of the final products.