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Double‐Walled SnO 2 Nano‐Cocoons with Movable Magnetic Cores
Author(s) -
Lou X. W.,
Yuan C.,
Archer L. A.
Publication year - 2007
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200700357
Subject(s) - shell (structure) , materials science , hydrothermal circulation , nano , crystallite , nanotechnology , porosity , core (optical fiber) , deposition (geology) , chemical engineering , composite material , metallurgy , engineering , sediment , biology , paleontology
Double‐walled SnO 2 nano‐cocoons with movable α‐Fe 2 O 3 cores have been prepared by hydrothermal shell‐by‐shell deposition of polycrystalline SnO 2 on ellipsoidal α‐Fe 2 O 3 /SiO 2 core/shell nanotemplates followed by removal of SiO 2 . The present templating approach also leads to two other nano‐architectures, namely single‐walled and porous double‐shelled nano‐cocoons. The α‐Fe 2 O 3 cores can be reduced to magnetic Fe 3 O 4 post‐synthesis.