TY - JOUR
T1 - Hydrothermal synthesis of magnetite particles with uncommon crystal facets
AU - Sato, Junki
AU - Kobayashi, Makoto
AU - Kato, Hideki
AU - Miyazaki, Takamichi
AU - Kakihana, Masato
PY - 2014/9
Y1 - 2014/9
N2 - Hydrothermal synthesis of Fe 3 O 4 (magnetite) particles was carried out using organic compounds as morphology control agents to obtain magnetite crystals with uncommon facets. It was established that the morphology of Fe 3 O 4 crystals obtained by hydrothermal treatment of an aqueous solution containing Fe 2+ and organic compounds depended on the organic compound used. The shape of the Fe 3 O 4 particles obtained when no additives were used was quasi-octahedral. In contrast, the addition of picolinic acid, citric acid or pyridine resulted in the formation of polyhedral crystals, indicating the presence of not only {111}, {100} and {110} facets but also high-index facets including at least {311} and {331}. When citric acid was used as an additive, octahedral crystals with {111} facets also appeared, and their size decreased as the amount of citric acid was increased. Thus, control of Fe 3 O 4 particle morphology was achieved by a simple hydrothermal treatment using additives.
AB - Hydrothermal synthesis of Fe 3 O 4 (magnetite) particles was carried out using organic compounds as morphology control agents to obtain magnetite crystals with uncommon facets. It was established that the morphology of Fe 3 O 4 crystals obtained by hydrothermal treatment of an aqueous solution containing Fe 2+ and organic compounds depended on the organic compound used. The shape of the Fe 3 O 4 particles obtained when no additives were used was quasi-octahedral. In contrast, the addition of picolinic acid, citric acid or pyridine resulted in the formation of polyhedral crystals, indicating the presence of not only {111}, {100} and {110} facets but also high-index facets including at least {311} and {331}. When citric acid was used as an additive, octahedral crystals with {111} facets also appeared, and their size decreased as the amount of citric acid was increased. Thus, control of Fe 3 O 4 particle morphology was achieved by a simple hydrothermal treatment using additives.
KW - High-index facets
KW - Hydrothermal method
KW - Magnetite
KW - Morphology control
UR - http://www.scopus.com/inward/record.url?scp=85016740786&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85016740786&partnerID=8YFLogxK
U2 - 10.1016/j.jascer.2014.05.008
DO - 10.1016/j.jascer.2014.05.008
M3 - Article
AN - SCOPUS:85016740786
VL - 2
SP - 258
EP - 262
JO - Journal of Asian Ceramic Societies
JF - Journal of Asian Ceramic Societies
SN - 2187-0764
IS - 3
ER -