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Título : Development of Magnetic Nanostructured Silica-Based Materials as Potential Vectors for Drug-Delivery Applications
Autor : Arruebo, Manuel, Galán, Marta, Navascués, Nuria, Téllez, Carlos, Marquina, Clara, Ibarra, M. Ricardo, Santamaría, J.
Fecha de publicación : 2006
Editor: American Chemical Society
Citación : Chemistry of Materials 18(7): 1911–1919 (2006)
Resumen: Metallic iron nanoparticles were synthesized within micron-sized mesoporous molecular sieves (with 2.9-nm pores) and hollow silica microcapsules (pores of 2.7 and 15 nm) using several cycles of wet impregnation under vacuum, followed by drying, oxidation, and reduction steps. For iron-loaded MCM-48, SQUID measurements revealed ferromagnetic behavior at room temperature with a magnetic moment as high as 3.40 emu/g (measured at 2 T) after four deposition cycles. Iron-loaded hollow silica microcapsules (250-nm wall thickness) showed a magnetic moment of 2.40 emu/g (at 2 T) after three deposition cycles and a coercivity as low as 12.9 Oe.
Descripción : 9 pages, 11 figures, 2 tables.
Versión del editor:
ISSN: 1520-5126
DOI: 10.1021/cm051646z
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