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Peapod‐Type Nanocomposites through the In Situ Growth of Gold Nanoparticles within Preformed Hexaniobate Nanoscrolls
Author(s) -
Adireddy Shiva,
Carbo Cecilia E.,
Rostamzadeh Taha,
Vargas Jose M.,
Spinu Leonard,
Wiley John B.
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201310834
Subject(s) - bifunctional , materials science , plasmon , nanotechnology , nanocomposite , nanoparticle , in situ , nanostructure , colloidal gold , metal , template , noble metal , chemical engineering , chemistry , optoelectronics , metallurgy , catalysis , organic chemistry , engineering
A facile in situ method to grow Au nanoparticles (NPs) in hexaniobate nanoscrolls is applied to the formation of plasmonic Au@hexaniobate and bifunctional plasmonic‐magnetic Au‐Fe 3 O 4 @hexaniobate nanopeapods (NPPs). Utilizing a solvothermal treatment, rigid multiwalled hexaniobate nanoscrolls and partially filled Fe 3 O 4 @hexaniobate NPPs were first fabricated. These nanostructures were then used as templates for the controlled in situ growth of Au NPs. The resulting peapod structures exhibited high filling fractions and long‐range uniformity. Optical measurements showed a progressive red shift in plasmonic behavior between Au NPs, Au NPPs, and Au‐Fe 3 O 4 NPPs; magnetic studies found that the addition of gold in the Fe 3 O 4 @hexaniobate NPPs reduced interparticle coupling effects. The development of this approach allows for the routine bulk preparation of noble‐metal‐containing bifunctional nanopeapod materials.