Preparation of Silver Nanoshells on Silica Particles by a Simple Two-step Process
A simple two-step method was developed to prepare silver nanoshells coated on silica paticles.The method involves two steps: concentration of reaction precursor (AgNO3) on particle surfaces and subsequent reduction by formaldehyde.The obtained composite particles were characterized by TEM, ED, and SEM-EDS measurements.The results show that the silver nanoshell is coated on silica particle surface in the form of a polycrystalline (cubic structure) layer with average thickness of 20 nm and weight percentage of 19%.
作 者： Yu ZHANG Ming MA Ning GU LING Xu Kun Ji CHEN 作者单位： Yu ZHANG(Key Laboratory of Molecular and Biomolecular Electronics, Ministry of Education,Southeast University,Nanjing,210096;National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing,210093)Ming MA,Ning GU(Key Laboratory of Molecular and Biomolecular Electronics, Ministry of Education,Southeast University,Nanjing,210096)
LING Xu,Kun Ji CHEN(National Laboratory of Solid State Microstructures and Department of Physics,Nanjing University,Nanjing,210093)
刊 名： 中国化学快报(英文版) ISTIC SCI 英文刊名： CHINESE CHEMICAL LETTERS 年，卷(期)： 2004 15(8) 分类号： 关键词： Silica particles metal nanoshells preparation