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Citation: YANG Li-Ping, TU Wei-Xia. Studies on Au Colloidal Nanoparticles Synthesized by Microwave Irradiation[J]. Acta Physico-Chimica Sinica, ;2006, 22(04): 513-516. doi: 10.3866/PKU.WHXB20060424 shu

Studies on Au Colloidal Nanoparticles Synthesized by Microwave Irradiation

YANG Li-Ping ,
TU Wei-Xia

1.
Key Laboratory for Nanomaterials of Ministry of Education, Division of Moleoular and Materials Simulation, Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China

Received Date: 19 September 2005
Available Online: 10 April 2006

Polymer-stabilized Au colloidal nanoparticles were prepared by microwave irradiation. Size of the Au particles varied from 5 nm to 120 nm along with different reactive conditions. Effects of the alcohol reducing agent and NaOH on particle size and shape were investigated. The prepared Au nanoparticles were characterized by transmission electron microscope (TEM) and ultraviolet-visible (UV-Vis) spectrophotometer. The Au nanoparticles prepared by microware irradiation have small particle size and od size distribution. The nanoparticle size and shape are highly dependent on the nature of the reducing agent and concentration of NaOH. Using UV-Vis spectra, it was found that the velocity of the formation of the Au nanoparticles in the reactive system with adding of NaOH was obviously faster and easier to form spherical particles than that without NaOH.
- Microwave irradiation:Nanoparticle;Au colloid:Poly(1-vinylpyrrolidone)
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