Open AccessPreparation of hydrophobic magnetite by a simple solvothermal method using oleylamine as reducing and surface modification agent
Author(s) -
Sun Xiaoning,
Sun Kangning,
Wang Song,
Zhang Shupin,
Liu Zhaojun,
Wang Yaping
Publication year - 2016
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.2015.0502
Subject(s) - oleylamine , materials science , scanning electron microscope , magnetite , chemical engineering , surface modification , transmission electron microscopy , nanoparticle , ferric , reducing agent , x ray photoelectron spectroscopy , nanotechnology , analytical chemistry (journal) , chemistry , organic chemistry , composite material , metallurgy , engineering
Hydrophobic magnetite (Fe 3 O 4 ) nanoparticles were prepared by a one‐step solvothermal processing, in which ferric chloride (FeCl 3 ·6H 2 O) was used as the iron source. A systematic characterisation of the obtained samples was performed by X‐ray diffraction, X‐ray photoelectron spectrometry, transmission electron microscope, scanning electron microscope and vibrating sample magnetometer. The experimental results demonstrated that oleylamine not only plays a role as the reducing agent, but also as the surface modification agent. Hydrophobicity of the Fe 3 O 4 nanoparticles therefore, which are covered with oleylamine and long‐chain alkanes, is achieved without any surface modification subsequently. With increasing aging time to 9 h, the average particle size of the product obtained is about 80 nm and its saturation magnetisation can reach a higher value, 89 emu/g.