Open AccessHydrothermal synthesis of magnetite: investigation of influence of aging time and mechanism
Author(s) -
Sun Xiaoning,
Sun Kangning,
Liang Yanjie
Publication year - 2015
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.2014.0344
Subject(s) - magnetite , hydrothermal circulation , mechanism (biology) , materials science , hydrothermal synthesis , chemical engineering , nanotechnology , metallurgy , engineering , physics , quantum mechanics
Magnetite (Fe 3 O 4 ) particles are prepared by a hydrothermal method using ethylene glycol as the solvent. Aging time is a very important factor in the reaction process. The properties and morphology of the products with different aging times are investigated. In the initial stage of the reaction (1 and 2 h), the main powders were iron hydroxides. Fe 3 O 4 particles generated (3 h) and grew into spherical shapes (4–10 h) with the extended aging time. The particle size and the specific saturation magnetisation also varied with aging time. By analysing the powders and the liquids during the reaction, a probable mechanism is studied.