Open AccessPreparation and characterization of α-Fe2O3/Fe3O4 heteroplasmon nanoparticles via the hydrolysis-combustion-calcination process of iron nitrate
Author(s) -
Tao Liu,
Shuting Zhang,
Zhou Wang,
Yueyang Xu
Publication year - 2022
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ac68c6
Subject(s) - calcination , hydrolysis , anhydrous , nanoparticle , materials science , inorganic chemistry , ferric , particle size , combustion , nuclear chemistry , chemical engineering , chemistry , catalysis , nanotechnology , organic chemistry , engineering
In this work, a feasible and facile hydrolysis-combustion-calcination process of ferric nitrate for the preparation of magnetic α -Fe 2 O 3 /Fe 3 O 4 heteroplasmon nanoparticles was represented. The influences of hydrolysis time, hydrolysis temperature, Fe 3+ concentration, anhydrous ethanol volume, calcination time, and calcination temperature on the properties of α -Fe 2 O 3 /Fe 3 O 4 heteroplasmon nanoparticles were investigated. According to a series of characterization analysis, the optimal preparation conditions were confirmed: 0.05 M Fe(NO 3 ) 3 ·9H 2 O was hydrolyzed at 90 °C for 8 h, and then the precursor was calcined at 200 °C for 2 h with 20 ml anhydrous ethanol. While, the morphology of α -Fe 2 O 3 /Fe 3 O 4 heteroplasmon were spherical structures with the average particle size of about 46 nm, and their saturation magnetization was 54 emu g −1 . The α -Fe 2 O 3 /Fe 3 O 4 heteroplasmon nanoparticles possessed controllable magnetic properties and a more stable state, which suggested promising applications.