Multifunctional Composite Nanoparticles Au nanorod@silica-M

• Main Author: 徐國華
• Other Authors: 王崇人
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/79716481759703616444

碩士 === 國立中正大學 === 化學研究所 === 91 === Abstrate To targeting an interesting issue related to the catalytical properties, we have fabricated a new type of nanocomposite materials combining 1D and 0D nanoparticles: Au nanorod@ thiolated silica-M, where M = Pt, Pd, and Au. Au nanorods are synthesized by electrochemical methods with an aid of co-surfactants. An thiolated silica shell layer is coated on each Au nanorod and it serves as a substrate for immobilizing foreign 0D nanoparticles. The sol-gel process is employed to prepare the nanometer thick “glue” layer with the precursors of 3-mercaptopropyl- trimethoxy silane (MPTMS). The thickness of the shell can be controlled easily. The embedded 0D nanoparticles are synthesized by first adsorbing Mn+ ions into the thiolated silica layer within the solution phase and then followed by reduction and growth to form immobilized nanoparticles. The particle dimensions, compositions, and crystallinity of the fabricated nanomaterials have been well characterized.