1. Multifunctional CNTs nanohybrids decorated with magnetic and fluorescent nanoparticles layer-by-layer.
- Author
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LIU, LI, JIANG, WEI, YAO, LEI, YANG, XI-WEN, CHEN, BIN-HUA, WU, SHI-XI, and LI, FENG-SHENG
- Subjects
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CARBON nanotubes , *MAGNETIC materials , *LUMINESCENCE , *NANOPARTICLES , *TEMPERATURE effect , *CHEMICAL decomposition , *POVIDONE , *NANOCRYSTALS - Abstract
FeO/CNTs nanocomposites, which were prepared by polyol-medium in situ high-temperature decomposition of Fe( acac) 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/FeO/CNTs nanohybrids were characterized by XRD, FT-IR, Raman microscope, TEM, EDS, XPS, VSM and fluorophotometers. Results indicated that magnetic FeO 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 6·795 emu g 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 FeO and CNTs. The superparamagnetic and fluorescent properties of obtained products are promising for potential applications in magnetically guided and fluorescence tracing drug delivery systems. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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