Synthesis and Characterization of Magneto-Luminescent ZnS/Fe3O4 Composites
Magneto-luminescent ZnS/Fe3O4 composites were synthesized successfully by combining the hydrothermal and solvothermal methods together. The results showed that the composites were composed of cubic ZnS microspheres, which were made up of ZnS particles, and Fe3O4 nanoparticles attached to the surfaces of ZnS microspheres. The photoluminescence (PL) spectroscopy of the ZnS/Fe3O4 composites suggested the existence of Fe3O4 nanoparticles on the surface of ZnS microspheres could lead to fluorescence quenching effect to some degree, making the fluorescence intensity of ZnS/Fe3O4 composites decrease. The red shift of the PL spectra of ZnS/Fe3O4 composites might be attributed to the shallow-trap radiative recombination facilitated by the Fe3O4 nanoparticles. Furthermore, the as-prepared ZnS/Fe3O4 microspheres exhibited magnetic responses hence it could be separated from the solution with the assistance of a magnet force.
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Document Type: Research Article
Publication date: February 1, 2015
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