Cyclic Microwave-Assisted Metathetic Synthesis of SPION/ Ca3V2O8:Er~(3+),Yb~(3+) Nanocomposites and Their Optical Properties

摘要

Er~(3+)/Yb~(3+) co-doped Ca3V2O8(Ca3V2O8:Er~(3+)/Yb~(3+)) nanocomposites with superparamagnetic iron oxide nanoparticles (SPIONs) have been successfully synthesized by a cyclic microwave-assisted metathetic method followed by heat-treatment. The microstructure exhibited well-defined and homogeneous morphology with the Ca3V2O8:Er~(3+)/Yb~(3+) particle size of 1-2 μm and Fe3O4 particle size of 100-500 nm. The Fe3O4 nonoparticles were self-preferentially crystallized and immobilized on the surface of Ca3V2O8:Er~(3+)/Yb~(3+) particles. The synthesized SPION/Ca3V2O8:Er~(3+)/Yb~(3+) nanocomposites were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy. Other optical properties were also examined using photoluminescence emission measurements and Raman spectroscopy.