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Hierarchically Nanostructured Magnetic Hollow Spheres of Fe3O4 and γ-Fe2O3: Preparation and Potential Application in Drug Delivery

Cao, Shao-Wen, Zhu, Ying-Jie, Ma, Ming-Yan, Li, Liang, Zhang, Ling·2008·The Journal of Physical Chemistry C

Abstract

We report for the first time a novel precursor-templated conversion method for the controlled synthesis of hierarchically nanostructured magnetic hollow spheres assembled by Fe 3 O 4 or γ-Fe 2 O 3 nanosheets with a relatively high saturation magnetization. We synthesized hierarchically nanostructured hollow spheres organized by nanosheets of a layer-structured ferrous precursor by a microwave-assisted hydrothermal method in ethylene glycol (EG). Ferric chloride (FeCl 3 ·6H 2 O) was used as the iron source, and EG acted as both a solvent and a reductant to reduce ferric salt to ferrous precursor in the presence of sodium hydroxide (NaOH) and sodium dodecyl benzene sulfonate (SDBS). The precursor was heated to prepare hierarchically nanostructured magnetic hollow spheres assembled by Fe 3 O 4 or γ-Fe 2 O 3 nanosheets, which were surface-modified with poly(ethylene glycol) (PEG). The surface-modified hierarchically nanostructured magnetic hollow spheres were explored as drug carriers. A typical anti-inflammatory drug, ibuprofen, was used for drug loading, and the release behaviors of ibuprofen in a simulated body fluid (SBF) were studied. The results indicate that these hierarchically nanostructured magnetic hollow spheres of Fe 3 O 4 or γ-Fe 2 O 3 have a high drug loading capacity and favorable release property for ibuprofen; thus, they are very promising for application in drug delivery. The samples were characterized by XRD, TEM, SEM, TG/DSC, BET, PPMS, FTIR, and UV−vis.

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Metadata

Authors
Cao, S.-W., Zhu, Y.-J., Ma, M.-Y., Li, L., & Zhang, L.
Venue
The Journal of Physical Chemistry C
Published
2008-01-23
Volume
112
Issue
6
Pages
1851-1856
ISSN
  • 1932-7447 (ISSN-L)
  • 1932-7455
OpenAlex
W1968295556
Cited by
342
References
29
FWCI
10.37
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Hierarchically Nanostructured Magnetic Hollow Spheres of Fe3O4 and γ-Fe2O3: Preparation and Potential Application in Drug Delivery. https://app.cochat.ai/papers/10.1021/jp077468+
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Cao, S.-W., Zhu, Y.-J., Ma, M.-Y., Li, L., & Zhang, L. (2008). Hierarchically Nanostructured Magnetic Hollow Spheres of Fe3O4 and γ-Fe2O3: Preparation and Potential Application in Drug Delivery. The Journal of Physical Chemistry C. https://doi.org/10.1021/jp077468%2B

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