A5 超音波反応場を用いた白金/ポリピロールナノ複合微粒子の合成と水素添加反応への応用

抄録

Nanocomposites are a special class of materials originating from suitable combinations of two nanoparticles or nanosized objects in some suitable technique, resulting in materials having unique physical propaties and wide application potential in diverse areas. Meanwhile, ultrasound can generate acoustic cavitations in a liquid. The collapse of the cavities generates the energy for chemical and mechanical effects. Ultrasonic irradiation dissociates water molecules into primary hydrogen radicals (H-) and hydroxyl radicals (OH-) in cavitation bubble. Since these active species can drive reduction of metal ions and oxidative polymerization of monomers, respectively, one-pot synthesis of metal nanoparticles and polymer in the form of composite can be possible in aqueous solution using ultrasonic irradiation. In this work, we report a successful one-pot synthesis of Pt/polypyrrole nanocomposite by using ultrasonic irradiation. Moreover, we have demonstrated the application of this nanocomposite to size-selective nanocatalyst.