Synthesis and characterization of surface-modified Fe3O4 super-paramagnetic nanoparticles / 华中科技大学学报(医学)(英德文版)
Journal of Huazhong University of Science and Technology (Medical Sciences)
; (6): 270-275, 2014.
Article
en En
| WPRIM
| ID: wpr-351084
Biblioteca responsable:
WPRO
ABSTRACT
Aqueous dispersion and stability of Fe3O4 nanoparticles remain an issue unresolved since aggregation of naked iron nanoparticles in water. In this study, we successfully synthesized different Fe3O4 super-paramagnetic nanoparticles which were modified by three kinds of materials [DSPE-MPEG2000, TiO2 and poly acrylic acid (PAA)] and further detected their characteristics. Transmission electron microscopy (TEM) clearly showed sizes and morphology of the four kinds of nanoparticles. X-ray diffraction (XRD) proved successfully coating of the three kinds of nanoparticles and their structures were maintained. Vibrating sample magnetometer (VSM) verified that their magnetic properties fitted for the super-paramagnetic function. More importantly, the particle size analysis indicated that Fe3O4@PAA had a better size distribution, biocompatibility, stability and dispersion than the other two kinds of nanoparticles. In addition, using CNE2 cells as a model, we found that all nanoparticles were nontoxic. Taken together, our data suggest that Fe3O4@PAA nanoaparticles are superior in the application of biomedical field among the four kinds of Fe3O4 nanoparticles in the future.
Texto completo:
1
Banco de datos:
WPRIM
Asunto principal:
Propiedades de Superficie
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Difracción de Rayos X
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Agua
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Compuestos Férricos
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Química
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Espectroscopía Infrarroja por Transformada de Fourier
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Microscopía Electrónica de Transmisión
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Nanopartículas de Magnetita
Tipo de estudio:
Prognostic_studies
Idioma:
En
Año:
2014
Tipo del documento:
Article