NDLI: Facile synthesis of porous bifunctional Fe3O4@Y2O3:Ln nanocomposites using carbonized ferrocene as templates

Content Provider	Royal Society of Chemistry (RSC)
Author	Su, Wankui He, Mingyue Li, Zhengquan Xing, Jun Zhong, Yijun
Copyright Year	2013
Abstract	Porous magnetic-luminescent Fe3O4@Y2O3:Ln (Ln = Eu, Yb/Er) nanoparticles (NPs) have been fabricated using carbonized ferrocene as templates. Through hydrothermal carbonization of ferrocene, carbon-coated Fe3O4 NPs were obtained, providing both a magnetic core and a good depositing surface to establish a uniform layer of Ln(OH)CO3:Ln. After annealing the pre-synthesized Fe3O4@C@Y(OH)CO3:Ln NPs in air, core–shell Fe3O4@Y2O3:Ln NPs with a porous morphology were synthesized. The as-synthesized NPs are uniform in size with a core diameter of 140 nm and a shell thickness of 20 nm. N2 adsorption–desorption isotherms reveal that these porous NPs possess a large surface area of 32 m2 g−1. After being doped with different lanthanide ions, these NPs can exhibit various down- and up-conversion emissions. Magnetic measurements also indicate that these NPs display superparamagnetic behavior and high magnetization at room temperature.
Starting Page	25970
Ending Page	25975
Page Count	6
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	3
Issue Number	48
Journal	RSC Advances
DOI	10.1039/c3ra44986f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Lanthanide Hydrothermal carbonization Magnetic core Superparamagnetism Ferrocene Nucleic acid thermodynamics
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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Facile synthesis of porous bifunctional Fe₃O₄@Y₂O₃:Ln nanocomposites using carbonized ferrocene as templates