Fabrication and Applications of Nano-Metal Particle Composites by Ultrasonic Eco-Process

Yamato Hayashi; Hirotsugu Takizawa; Yoshitaka Saijo; Tohru Sekino; Katsuaki Suganuma; Koichi Niihara

doi:10.4028/www.scientific.net/KEM.317-318.231

Paper Titles

Formation Mechanism of Nano AlN Powder by Gas-Reduction-Nitridation
p.215

Synthesis of Metal Oxide Hollow Nanoparticles by Chemical Vapor Condensation Process
p.219

Microwave-Assisted Synthesis of MWO₄ and MMoO₄ (M = Ca, Ni) Nano-Powders Using Citrate Complex Precursor
p.223

Synthesis and Microstructure of TiO₂-SiO₂ Nanoparticles by a Reverse Micelle and Sol-Gel Processing
p.227

Fabrication and Applications of Nano-Metal Particle Composites by Ultrasonic Eco-Process
p.231

Fabrication and Estimation of Au Coated γ-Fe₂O₃ Nanoparticles for Separation and Purification of Biomolecules
p.235

Nano-Structured High Purity Copper Processed by Accumulative Roll-Bonding
p.239

Direct Hydrothermal Processing of Long Titanate Nanofibers from Natural Rutile
p.243

Synthesis of Nanotubular Titanate from Titanium Using Hydrothermal Treatment
p.247

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Fabrication and Applications of Nano-Metal Particle Composites by Ultrasonic Eco-Process

Abstract:

Nano-sized metal particles have recently attracted considerable interest owing to their application potential. Such particles can be synthesized using physical and chemical methods. In this study, nano-sized noble metals were synthesized through the reaction of metal oxides by ultrasonic. This means that the chemical reactions which take place under conventional conditions can be accelerated by ultrasonic cavitations. In general, the chemical effects of ultrasonic irradiation fall into three areas: homogeneous sonochemical efffects of liquids, heterogeneous sonochemical effects of liquid-liquid or liquid-solid systems, and sonocatalytic effects. It has been proposed that liquid-liquid systems are used for the fabrication of nano-metal particles in the past. In this study, the fabrication of nano-metal particles and supported composites was investigated for the liquid-solid system from a viewpoint of economy and ecology. By choosing suitable conditions, it is reasonable to expect that these simple ultrasonic processes can be extended to obtain nano-sized metal particles. Thus applications by using these reactions were investigated to prepare the nano-sized metal particle supported materials, and mechanisms were investigated.