A Study on the Preparation of CuO Nanoparticles by Microwave

• Main Authors: Chia-Ting Lin, 林嘉鼎
• Other Authors: 蔡德華
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/2pj3sm

碩士 === 國立臺北科技大學 === 化學工程所 === 94 === In recent years, nanoparticles of transition metal oxides become an important class of semiconductors, which have applications in magnetic storage media, solar energy transformation and catalysis, etc… Among the oxides of transition metals, CuO nanopaticles has attracted much attention because it is have higher-TC. CuO is a semiconducting compound with a narrow band gap and used for photoconductive and photothermal applications. Microwaves are electromagnetic waves containing electric and magnetic field components. It is well known that the interaction of dielectric materials, liquids or solids. But the applications of microwave in the preparation of nanoparticles have been reported until recent years. In this research uses microwave heating method to prepare CuO nanoparticles. Join CuAc2 or CuCl2 of right amount concentration in NaOH of different concentration, then added a small amount of PEG 20000 to make sure the particles not agglomerated. Final put it into the microwave heating system for producing the CuO nanoparticles. In the experiment, we produce the nanoparticles by control different concentration of reactant, different adding amount of dispersant, different heating time and power of heating, use DLS to measure the size of particles. And infer the best condition that produces CuO nanoparticles by the experimental result. After the experiment , we can find that when NaOH and CuAc2 concentration are 0.4M and 0.3M respectively； NaOH and CuCl2 thickness are 0.5M and 0.1M respectively; The adding amount of PEG dispersant is 0.1g; Microwave is heated time and power is 10 hours and 100W will produce the minimum average particle size, it is probably 190nm. Use SEM and XRD to observe the surface and composition afterwards.