Preparation of Core-Shell Nanocomposites by Electroless Plating

• Main Authors: Tzu-Yu Wu, 吳梓渝
• Other Authors: Chien-Jung Huang
• Format: Others
• Language: en_US
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/77673556551153454338

碩士 === 國立高雄大學 === 應用物理學系碩士班 === 99 === The controlled organization of metal nanosized particles into ordered structures has the unique optical, electrical, magnetic, and catalytic properties, which were important for various fields. For the core-shell nanocomposites synthesis technology in current literatures, most of disadvantages are too loose on metal shell structure and are complicated synthetic steps, resulting in affecting its nature and application.In this study, we present an electroless method for the fabrication of core-shell silica-silver nanocomposite spheres. The technique for electroless metal plating is based on the use of a chemical reducing reaction that permits the reduction of the metal silver ions from solution on the surface of the core silica. For this process, the surface does not need electronically conducting, while the kinetics of electron transfer should be slow enough to avoid the reduction of the metal ions and nucleation in solution. The surface is ensured that reduction only takes place on the surface, so that the metal remains attached. Then, we can search influence parameter on coating thickness of silver shell via experiment. Further, we can obtain the optimum result from various parameters.