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Sustainable Method for the Large‐Scale Preparation of Fe 3 O 4 Nanocrystals
Author(s) -
Lee SungWoo,
Yoon JaeSik,
Kang Sungkyoung,
Kwon Kihyun,
Chang Ki Soo,
Lee SangGap,
Choi SangIl,
Jeong JongRyul,
Lee Gaehang,
Nam Ki Min
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14262
Subject(s) - nanocrystal , materials science , transmission electron microscopy , solvent , chemical engineering , thermal decomposition , characterization (materials science) , crystal structure , powder diffraction , nanotechnology , analytical chemistry (journal) , crystallography , chemistry , organic chemistry , engineering
In this work, a facile synthetic process is reported for the large‐scale synthesis of Fe 3 O 4 nanocrystals. Thermal decomposition of Fe(acac) 3 (100 g) in 1‐hexadecanol produced Fe 3 O 4 nanocrystals with well‐controlled sizes and morphologies. The nanocrystals were spherically shaped with average diameters of 7.8 ± 0.6, 6.5 ± 0.4, and 5.9 ± 0.2 nm when prepared at 300°C, 270°C, and 250°C, respectively. Mechanisms of crystal formation were elucidated on the basis of gas chromatography‐mass spectroscopy analysis, enabling the large‐scale preparation of Fe 3 O 4 nanocrystals. To provide an environmentally benign route, Fe 3 O 4 nanocrystals were prepared with recycled solvent which was recovered from the initial experiment. The resulting porous Fe 3 O 4 nanocrystals had larger average sizes than those of the initial nanocrystals. Structural characterization was performed using transmission electron microscopy and powder X‐ray diffraction.