A general route to construct diverse multifunctional Fe3O4/metal hybrid nanostructures.
We have developed a simple, efficient, economical, and general approach to construct diverse multifunctional Fe(3)O(4)/metal hybrid nanostructures displaying magnetization using 3-aminopropyltrimethoxysilane (APTMS) as a linker. High-density Au nanoparticles (NPs) could be supported on the surface of superparamagnetic Fe(3)O(4) spheres and used as seeds to construct Au shell-coated magnetic spheres displaying near-infrared (NIR) absorption, which may make them promising in biosensor and biomedicine applications. High-density flowerlike Au/Pt hybrid NPs could be supported on the surface of Fe(3)O(4) spheres to construct multifunctional hybrid spheres with high catalytic activity towards the electron-transfer reaction between potassium ferricyanide and sodium thiosulfate. High-density Ag or Au/Ag core/shell NPs could also be supported on the surface of Fe(3)O(4) spheres and exhibited pronounced surface-enhanced Raman scattering (SERS), which may possibly be used as an optical probe with magnetic function for application in high-sensitivity bioassays.
Guo
Shaojun
S
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, Jilin, China.
Dong
Shaojun
S
Wang
Erkang
E
D052203:Ferrosoferric Oxide / Q000138:chemical synthesis / Q000737:chemistry*; D006046:Gold / Q000737:chemistry; D008280:Magnetics; D053768:Metal Nanoparticles / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D010984:Platinum / Q000737:chemistry; D011437:Propylamines / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D019265:Spectroscopy, Near-Infrared; D013059:Spectrum Analysis, Raman; D013499:Surface Properties
D011437:Propylamines; D012821:Silanes; C088294:3-aminopropyltrimethoxysilane; D012834:Silver; D010984:Platinum; D006046:Gold; D052203:Ferrosoferric Oxide