Synthesis and characterization of superparamagnetic Fe3O4@ Au core-shell nanoparticles

摘要：

Superparamagnetic Fe3O4@ Au core-shell nanoparticles have been prepared successfully by the reduction of Au3+ onto the surfaces of superparamagnetic magnetite nanoparticles. The core-shell nanoparticles were characterized by Transmission electron microsco py (TEM),X-ray powder diffraction patterns (XRD) ,Uv-vis spectrophotometer and surface enhanced Raman scattering (SERS). The results revealed that the prepared core-shell nanoparticles were covered by Au shell.SERS activities of these magnetic nanoparticles were studied by using Thiolphenol (TP) as a probe molecule after a magnet was used to concentrate the colloid.It was found that the SERS in tensity depends on the Au shell thickness of the core-shell nanoparticles and strengthens with the increasing shell thickness.

关键词： superparamagnetic Fe3O4@ Au nanoparticles surface enhanced Raman scattering (SERS) Thiolphenol (TP)

作者: SHEN Hongxia XIE Luchuan YAO Jianlin GU Renao

作者单位: Department of Biology and Chemical Engineering,Jiaxing University,Jiaxing 314001,China College of Ch Department of Biology and Chemical Engineering,Jiaxing University,Jiaxing 314001,China College of Chemistry,Chemical Engineering and Materials Science,Suzhou University,Suzhou 215123,Chin

会议类型: 国际会议

会议名称: The 10th China-Russia System on Advanced Materials and Technologies(第十届中俄新材料新工艺研讨会)

会议地点: 浙江嘉兴

会议语种:英文

页码: 667-670

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）