Solvothermal Synthesis of Mesoporous Fe{sub 3}O{sub 4} Nanoparticles in Mixed Solvent of Ethylene Glycol and Water: Structure and Magnetic Properties

Journal Article · Fri Mar 15 04:00:00 EDT 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-018-4766-9· OSTI ID:22919558

Zhang, Yajing; Li, Chunyan; Liu, Lidong; Wang, Kangjun; Zhu, Yuan; Ben, Jiaqi; Wu, Jing ^[1]

---

1. Shenyang University of Chemical Technology, College of Chemical Engineering (China)

Mesoporous Fe{sub 3}O{sub 4} nanoparticles were synthesized by a solvothermal method, via a mixed solvent of ethylene glycol (EG) and deionized water, using iron chloride and urea as the precursors. The phase, morphology, and pore structure are investigated by the characterization of X-ray diffraction (XRD), transmission electron microscopy (TEM), and N{sub 2} isotherm adsorption–desorption. The results show that the amount of water in the mixed solvent plays vital role in controlling the size of Fe{sub 3}O{sub 4} nanoparticles, specific surface area, and pore size. Additionally, solid Fe{sub 3}O{sub 4} nanospheres were prepared using only EG as solvent, while α-Fe{sub 2}O{sub 3} nanosized polyhedrals were obtained with only water as solvent. The mesoporous Fe{sub 3}O{sub 4} nanoparticles show a ferromagnetic behavior, with saturation magnetizations (Ms) of 78–82 emu g{sup − 1} and coercivities (Hc) ranging from 13–58 Oe. The α-Fe{sub 2}O{sub 3} nanoparticles also exhibit a weak-ferrimagnetic character, with a remanent magnetization (Mr) of 0.24 emu g{sup − 1}, and Hc of 558 Oe.

• OSTI ID: 22919558
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 3 Vol. 32; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ADSORPTION
DESORPTION
ETHYLENE GLYCOLS
IRON CHLORIDES
IRON OXIDES
ISOTHERMS
MAGNETIC PROPERTIES
MAGNETIZATION
MIXED SOLVENTS
NANOPARTICLES
NANOSTRUCTURES
PORE STRUCTURE
SATURATION
SOLIDS
SPECIFIC SURFACE AREA
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
WATER
X-RAY DIFFRACTION