1 research outputs found
Porous Carbon Protected Magnetite and Silver Hybrid Nanoparticles: Morphological Control, Recyclable Catalysts, and Multicolor Cell Imaging
A simple
and facile synthetic strategy is developed to prepare a new class
of multifunctional hybrid nanoparticles (NPs) that can integrate a
magnetic core with silver nanocrystals embedded in porous carbon shell.
The method involves a one-step solvothermal synthesis of Fe<sub>3</sub>O<sub>4</sub>@C template NPs with Fe<sub>3</sub>O<sub>4</sub>nanocrystals
in the core protected by a porous carbon shell, followed by loading
and in situ reduction of silver ions in the carbon shell in water
at room temperature. The core–satellite and dumbbell-like nanostructures
of the resulted Fe<sub>3</sub>O<sub>4</sub>@C–Ag hybrid NPs
can be readily controlled by loading amount of silver ions. The hybrid
NPs can efficiently catalyze the reduction reaction of organic dyes
in water. The easy magnetic separation and high stability of the catalytically
active silver nanocrystals embedded in the carbon shell enable the
hybrid NPs to be recycled for reuse as catalysts. The hybrid NPs can
also overcome cellular barriers to enter the intracellular region
and light up the mouse melanoma B16F10 cells in multicolor modal,
with no cytotoxicity. Such porous carbon protected Fe<sub>3</sub>O<sub>4</sub>@C–Ag hybrid NPs with controllable nanostructures and
a combination of magnetic and noble metallic components have great
potential for a broad range of applications in the catalytic industry
and biomedical field