Open AccessControlled synthesis of monodisperse core–shell γ‐Fe 2 O 3 @SiO 2 nanoparticles with well‐dispersed γ‐Fe 2 O 3 seeds
Author(s) -
Li Keran,
Yan Jiahe,
Luo Lang,
He Zhiheng,
Zhou Lingling,
Gao Feng
Publication year - 2020
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0626
Subject(s) - tetramethylammonium hydroxide , dispersity , nanoparticle , transmission electron microscopy , aqueous solution , materials science , raman spectroscopy , tetramethylammonium , chemical engineering , morphology (biology) , hydroxide , nanotechnology , analytical chemistry (journal) , inorganic chemistry , chemistry , polymer chemistry , organic chemistry , ion , physics , engineering , biology , optics , genetics
Fe 2 O 3 @SiO 2 nanoparticles with well‐dispersed γ‐Fe 2 O 3 seeds were prepared in aqueous solution using a simple one‐step method. Transmission electron microscopy, X‐ray diffraction analysis, and Raman spectrum were used to characterise the morphology and structure of γ‐Fe 2 O 3 and γ‐Fe 2 O 3 @SiO 2 nanoparticles. The concentration of tetramethylammonium hydroxide (TMAOH) was found to be very influential in the control of the morphology of γ‐Fe 2 O 3 @SiO 2 nanoparticles. Water‐soluble monodisperse γ‐Fe 2 O 3 @SiO 2 nanoparticles with well‐dispersed γ‐Fe 2 O 3 seeds were successfully synthesised when the concentration of TMAOH is 0.015 M.