Sonochemical Synthesis of Metal Nanoparticles

  • Kenji OkitsuEmail author


In this chapter, sonochemical synthesis of nanometer sized metal particles is described and consists of sonochemical reduction of the corresponding metal ions in aqueous solutions. The reduction mechanism is suggested to be due to the reactions with reducing species formed from the sonolysis of organic additives and water. The rate of reduction of metal ions can be changed by changing the types and concentration of organic additives. In addition, various parameters such as ultrasound intensity, ultrasound frequency, dissolved gas, position of reaction vessel, etc. also affect the rate of reduction of metal ions. It is important to control the rate of reduction of metal ions, because the size of the formed metal particles is dramatically affected by the rate of reduction. It is recognized that smaller metal particles are obtained when the rate of reduction is higher. Bimetallic nanoparticles with core/shell structures can be also prepared by the sonochemical reduction of the corresponding metal ions. In addition, the immobilization of metal nanoparticles on metal oxides and the shape control of metal nanoparticles by the sonochemical reduction are described.


Metal Nanoparticles Cavitation Bubble Ultrasonic Irradiation Gold Nanorods Bimetallic Nanoparticles 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.Graduate School of EngineeringOsaka Prefecture UniversityOsakaJapan

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