Solution Combustion Synthesis of Fe{sub 3}O{sub 4} Powders Using Mixture of CTAB and Citric Acid Fuels

Journal Article · Fri Feb 15 00:00:00 EST 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-018-4685-9· OSTI ID:22919624

Hadadian, S.; Alamolhoda, S. ^[1]

---

1. Iran University of Science and Technology (IUST), School of Metallurgy and Materials Engineering (Iran, Islamic Republic of)

Magnetite (Fe{sub 3}O{sub 4}) powders were synthesized by solution combustion method using a mixture of cetyltrimethylammonium bromide (CTAB) and citric acid fuels at various fuel to oxidant ratios (ϕ = 0.5, 1, 1.5, and 2). Phase evolution investigated by x-ray diffraction method showed single-phase Fe{sub 3}O{sub 4} powders were only formed at ϕ = 1 using mixture of fuels, while impurity α-Fe{sub 2}O{sub 3} phase together with magnetite phase was completely disappeared at ϕ = 2 for CTAB fuel alone. The specific surface area and porous structures of the as-combusted Fe{sub 3}O{sub 4} powders were characterized by N{sub 2} adsorption-desorption isotherms and scanning electron microscopy techniques, respectively. The specific surface area using the mixture of fuels (37 m{sup 2}/g) was higher than that of CTAB fuel alone (32 m{sup 2}/g). Magnetic properties of the as-combusted powders were studied by vibration sample magnetometry method. The highest saturation magnetization of 83 emu/g was achieved by mixture of fuels at ϕ = 1, due to the high purity and large particle size.

• OSTI ID: 22919624
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 32, Issue 2; Other Information: Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ADSORPTION
CITRIC ACID
COMBUSTION
DESORPTION
DIFFRACTION METHODS
IRON OXIDES
IRON-ALPHA
ISOTHERMS
MAGNETIC PROPERTIES
MAGNETITE
MAGNETIZATION
PARTICLE SIZE
POROUS MATERIALS
SATURATION
SCANNING ELECTRON MICROSCOPY
SPECIFIC SURFACE AREA
SYNTHESIS
X-RAY DIFFRACTION