P01 コロイド安定化剤非存在下でのAuナノ粒子生成メカニズムの解析

抄録

Application of Au nanoparticles to various fields has been studied actively because of its unique characteristics different from those of bulk. However, the formation mechanism of Au nanoparticles is still unclear. If the formation mechanism of Au nanoparticles was clarified in more details and the size of Au nanoparticles was controlled more precisely, the application range of Au nanoparticles should be expanded dramatically. The reducing radicals formed in the sonolysis of solution containing Au(III) and 1-propanol, result in the formation of Au seed particles via reduction of Au(III). This sonochemical reduction method is quite different from other methods. The synthesis of Au nanoparticle is possible without using any colloid stabilizers. In this study, Au nanoparticles were synthesized by sonochemical reduction method. The reduction behavior of Au(III) and particle diameter change of synthesized Au nanoparticles were measured by ultraviolet-visible (UV-vis) spectrophotometer to clarify the formation mechanism of Au nanoparticles.