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Unusual Magnetic Properties of Size‐Controlled Iron Oxide Nanoparticles Grown in a Nanoporous Matrix with Tunable Pores
Author(s) -
Alam Sher,
Anand Chokkalingam,
Ariga Katsuhiko,
Mori Toshiyuki,
Vinu Ajayan
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200901570
Subject(s) - nanoparticle , nanoporous , mesoporous material , materials science , nanotechnology , matrix (chemical analysis) , magnetic nanoparticles , oxide , simple (philosophy) , iron oxide , computer science , chemical engineering , chemistry , organic chemistry , composite material , catalysis , philosophy , epistemology , engineering , metallurgy
Fully loaded : A facile nanosieve approach for the preparation of Fe 2 O 3 nanoparticles that have uniform and tunable sizes and are highly dispersed over a mesoporous support is achieved by the simple adjustment of the pore diameter of the template matrix (see picture). The nanoparticles are very small (6.5–9.0 nm) and show superior magnetic properties compared to pure Fe 2 O 3 nanoparticles prepared without using a support.