バイオプロセスによる金属ナノ粒子材料の創製と応用

抄録

Nanoparticles of noble metals can be applied to a wide range of functions such as catalysis, optics and biosensing. Although chemical and physical synthetic routes for the production of noble metal nanoparticles have been extensively developed, another possibility is biological methods in which micro-organisms are used to synthesize noble nanoparticles by reducing soluble metal ions in aqueous solutions. Microbial synthetic route to noble metal nanoparticles is potentially attractive as an environmentally friendly method because biological systems at room temperature and near-neutral pH involve low energy consumption and are environmentally safe. This paper reports the biosynthesis of Pd and Au nanoparticle, analysis of the oxidation states of biogenetic metal nanoparticle, control of particle size and morphology, and application of these biosynthesized metal nanoparticles as a catalyst.