Open AccessSynthesis of superparamagnetic iron oxide nanoparticles in carbon reduction method
Author(s) -
Zhang Qiang,
Li Junyang,
Chou Xiujian,
Gao Libo,
Hai Zhenyin,
Xue Chenyang
Publication year - 2013
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.2013.0364
Subject(s) - superparamagnetism , nanoparticle , carbon fibers , reduction (mathematics) , iron oxide nanoparticles , materials science , magnetic nanoparticles , carbon nanoparticles , iron oxide , oxide , nanotechnology , chemical engineering , inorganic chemistry , chemistry , metallurgy , engineering , magnetization , mathematics , physics , quantum mechanics , composite number , magnetic field , composite material , geometry
Owing to the superparamagnetic iron oxide nanoparticles’ wide applications, a new approach in the synthesis of mainly superparamagnetic iron oxide nanoparticles is reported. The Fe 3 O 4 nanoparticles (∼500 nm) were synthesised through the carbon reduction method, which is a brand new method. The best parameters of synthesis of the nanoparticles are fixed through characterising by transmission electron microscope (TEM), X‐ray diffraction and a vibrating sample magnetometer of the Fe 3 O 4 nanoparticles obtained under different experimental conditions. The TEM characterisation results show that the best ratio of the carbon and ferric chloride is 3:1 and the most suitable heating time is 3 h. The nanoparticles, which were obtained with furnace cooling under vacuum condition after 3 h heating, have the best magnetic properties and most stable crystal from. The characterisations of SiO 2 protected nanoparticles demonstrate that the component of the nanoparticles is Fe 3 O 4 . The UV–vis absorption spectrum of the Fe 3 O 4 nanoparticles demonstrates wide‐range light absorption of the Fe 3 O 4 nanoparticles. Moreover, quantitative analysis of this new method is conducted to confirm repeatability. The actual qualities of the Fe 3 O 4 nanoparticles are always consistent with the theoretical ones, which indicate that the repeatability of this method is excellent.