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Título

Development of Magnetic Nanostructured Silica-Based Materials as Potential Vectors for Drug-Delivery Applications

AutorArruebo, Manuel; Galán, Marta; Navascués, Nuria; Téllez, Carlos; Marquina, Clara; Ibarra, M. Ricardo; Santamaría, Jesús
Fecha de publicación2006
EditorAmerican Chemical Society
CitaciónChemistry of Materials 18(7): 1911–1919 (2006)
ResumenMetallic 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.
Descripción9 pages, 11 figures, 2 tables.
Versión del editorhttp://dx.doi.org/10.1021/cm051646z
URIhttp://hdl.handle.net/10261/19306
DOI10.1021/cm051646z
ISSN1520-5126
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