Preparation and characterization of gold coated-Fe2O3 nanoparticles
(0) Fe3O4 nanoparticles (NPs) were prepared by traditional chemical coprecipitation method, γ-Fe2O3 NPs were then obtained after baking at a high temperature. Thiol-modified γ-Fe2O3 NPs were obtained after modification by use of 3-mercaptopropyltriethoxysilane (MPTS). A layer of colloid gold was formed on the surface of the functionalized γ-Fe2O3 NPs by reduction of Au3+ using Au-S bond, allowing the nanoparticles more stable and functional. The structure and morphology of products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and diameter distribution measurement. Gold coated γ-Fe2O3 nanoparticles obtained under appropriate conditions possess a very good crystal structure and their average diameter is about 36 nm.
γ-Fe2O3 nanoparticles MPTS gold synthesis characterization
Liu Li-Shang Liu Hong-Na Li Song He Nong-Yue
Hunan Key Laboratory of Green Packaging and Application of Biological Nanotechnology, Hunan Universi State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southe Hunan Key Laboratory of Green Packaging and Application of Biological Nanotechnology, Hunan Universi
国际会议
International Symposium on Medical and Pharmaceutical Biotechnology(医药生物技术国际研讨会)
南京
英文
130-132
2009-04-27（万方平台首次上网日期，不代表论文的发表时间）