액상환원을 통한 백금 나노 입자의 합성과 분산

Abstract

Platinum (Pt) has been widely used such as catalyst of fuel cell and exhausted gas clean system due to high catalytic activity. However, the price of Pt is continuously increasing each year according to low-yield and diversity of application. So, it has been researched to enhancing efficiency of catalytic properties by controlling the size and the shape of particles or developing alternative metal. In this study, we synthesized Pt nano particle by using polyol process which was one of liquid phase reduction method. H2PtCl6∙ 6H2O, used as a precursor, was dissolved in ethylene glycol and synthesized Pt nano particle depending on temperature and time of synthesis. Also, we added polyvinylpyrrolidone (PVP) as capping agent for reducing the size and dispersing the particles. And AgNO3, as a metal salt, was added to control shape of platinum particles. Through polyol process, face centered cubic structured platinum particles of 10~20nm was successfully synthesized.