Journal
BULLETIN OF MATERIALS SCIENCE
Volume 36, Issue 3, Pages 373-383Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/s12034-013-0490-z
Keywords
Magnetic materials; multilayers; luminescence; magnetic properties
Categories
Funding
- National Natural Science Foundation of China [50602024, 50972060]
- NUST [2010ZDJH06]
- scientific research fund from Jiangsu province of China [BK2007214]
- Jiangsu Applied Chemistry and Materials Graduate Centre for innovation and academic communication foundation [2010ACMC07]
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Fe3O4/CNTs nanocomposites, which were prepared by polyol-medium in situ high-temperature decomposition of Fe(acac)(3) using PVP as stabilizing agent and modified with SDS, were further decorated with high-quality ZnS nanocrystal via a wet technique in glycol solution. The obtained ZnS/Fe3O4/CNTs nanohybrids were characterized by XRD, FT-IR, Raman microscope, TEM, EDS, XPS, VSM and fluorophotometers. Results indicated that magnetic Fe3O4 nanoparticles and fluorescent ZnS nanocrystal were uniformly dispersed on the surface of CNTs layer-by-layer with PVP and SDS as stabilizing agent and ion-capture agent, respectively. The novel multi-functional nanohybrids exhibit super-paramagnetic properties with a saturation magnetization about 6 center dot 795 emu g (-aEuro parts per thousand 1) at room temperature and show a strong emission band at 367 nm with a broad shoulder around 342-483 nm due to the interactions and/or background emissions of Fe3O4 and CNTs. The superparamagnetic and fluorescent properties of obtained products are promising for potential applications in magnetically guided and fluorescence tracing drug delivery systems.
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