Hydrothermal synthesis of magnetite: investigation of influence of aging time and mechanism

Author

Xiaoning Sun ; Kangning Sun ; Yanjie Liang

Author_Institution

Key Lab. for Liquid-Solid Struct. Evolution & Process. of Mater. (Minist. of Educ.), Shandong Univ., Jinan, China

Volume

10

Issue

2

fYear

2015

fDate

2 2015

Firstpage

99

Lastpage

104

Abstract

Magnetite (Fe₃O₄) 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. Fe₃O₄ 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.

Keywords

ageing; crystal growth from solution; ferromagnetic materials; iron compounds; magnetic particles; magnetisation; particle size; powders; surface morphology; Fe₃O₄; aging time; ethylene glycol solvent; hydrothermal synthesis; iron hydroxide powders; magnetite; mechanism research; morphology; particle size; specific saturation magnetisation; spherical shapes; time 1 h to 10 h;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2014.0344

Filename

7051334