激光蒸凝法制备氧化铜纳米粒子

Preparation of CuO Nanoparticles by Laser Heating Gas-Evaporation Method

以１５０Ｗ ＣＷ ＣＯ２激光器为光源，Ｃｕ（ＡＣ）２·Ｈ２Ｏ为靶材，采用激光蒸凝法制备出了氧化铜纳米粒子．初步研究了反应参数对纳米粒子性能的影响，并用Ｘ射线衍射、电子衍射、透射电镜等技术对纳米粒子的性能进行了表征，同时对纳米粒子的形成机理进行了初步的探讨．实验结果表明；激光功率密度、反应压力、载气种类及流量等工艺参数对产品的粒度、晶型等性能均有影响．在惰性气氛下，产物主要是Ｃｕ和Ｃｕ２Ｏ，粒径为１０～３０ｎｍ；在氧气气氛下，产物主要是Ｃｕ、Ｃｕ２Ｏ和ＣｕＯ的混合物，粒径为１０～５０ｎｍ．

CuO nanoparticles were prepared by a laser heating gas-evaporation method, with 150 CW CO laser as the light source and Cu(AC)(2).2H(2)O as the target. The effects of process parameters on nanoparticles were studied. XRD, ED and TEM were used to characterize the samples. The formation mechanism of Cu/O nanoparticles was preliminarily discussed. The experimental results show that the process parameters such as laser power density, reaction pressure, the sorts and rate of airflow etc, effect the sizes and crystal system of nanoparticles. In inert gases, the products are Cu and Cu2O, the diameter of nanoparticles is between 10 and 30nm; In oxygen, the products are Cu Cu2O and CuO, the diameter of nanoparticles is between 10 and 50nm.