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激光蒸凝法制备氧化铜纳米粒子

郭广生; 李强; 王志华; 杨福明; 郭洪猷   

  1. 北京化工大学可控化学反应科学与技术基础教育部重点实验室, 北京 100029
  • 收稿日期:2001-03-12 修回日期:2001-05-07 出版日期:2002-03-20 网络出版日期:2002-03-20

Preparation of CuO Nanoparticles by Laser Heating Gas-Evaporation Method

GUO Guang-Sheng; LI Qiang; WANG Zhi-Hua; YANG Fu-Ming; GUO Hong-You   

  1. Key Lab; for Science and Technology of Controllable Chemical Reactions; Education Ministry; Beijing University of Chemical Technology; Beijing 100029; China
  • Received:2001-03-12 Revised:2001-05-07 Published:2002-03-20 Online:2002-03-20

摘要: 以150W CW CO激光器为光源,Cu(AC)·HO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CuO,粒径为10~30nm;在氧气气氛下,产物主要是Cu、CuO和CuO的混合物,粒径为10~50nm.

关键词: 氧化铜, 纳米粒子, 激光化学

Abstract: CuO nanoparticles were prepared by a laser heating gas-evaporation method, with 150W CW CO2 laser as the light source and Cu(Ac)2·2H2O 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.

Key words: CuO, nanoparticles, laser chemistry

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