Cetyltrimethylammonium Bromide (CTAB) Surfactant-Assisted Synthesis of BiFeO{sub 3} Nanoparticles by Sol-Gel Auto-Combustion Method
- Iran University of Science and Technology (IUST), School of Metallurgy and Materials Engineering (Iran, Islamic Republic of)
In this research, BiFeO{sub 3} nanoparticles were synthesized by sol-gel auto-combustion method with and without the addition of cetyltrimethylammonium bromide (CTAB) surfactant. The effect of different amounts of CTAB addition (0, 1.5, 3, and 6 wt.%) on phase constituents, microstructure, and magnetic properties of the synthesized samples were evaluated using X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), and vibration sample magnetometer (VSM). Also, BiFeO{sub 3} nanoparticles were used for the degradation of methylene blue (MB) as a typical dye pollutant under UV irradiation. XRD results showed the formation of BiFeO{sub 3} mainly with some minute impurity phases such as Bi{sub 2}O{sub 3} and γ-Fe{sub 2}O{sub 3}. Proper amounts of CTAB addition (1.5 wt.%) considerably eliminates Bi{sub 2}O{sub 3} and γ-Fe{sub 2}O{sub 3} residuals in the combustion product. FESEM micrographs show particle size reduction and also more uniform particle size distribution when using 0.75 wt.% of CTAB addition. In the presence of the BiFeO{sub 3}, the UV irradiation for 120 min resulted in 26% degradation of MB, in a sample with 0.75 wt.% CTAB. The synthesized nanoparticles of BiFeO{sub 3} in the sample with 0.75 wt.% CTAB after calcination at 650 {sup ∘}C showed a weak ferromagnetism behavior with saturation magnetization of 0.54 emu/g. {sub i}H{sub C} values of the samples are in the range of 200 to 238 Oe, depending on the crystallite size and phase constituents of the samples.
- OSTI ID:
- 22773721
- Journal Information:
- Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 10; Other Information: Copyright (c) 2018 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
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH OXIDES
BROMIDES
CALCINATION
COMBUSTION PRODUCTS
FERRITES
FERROMAGNETISM
IMPURITIES
IRON OXIDES
MAGNETIC PROPERTIES
MAGNETIZATION
METHYLENE BLUE
MICROSTRUCTURE
NANOPARTICLES
PARTICLE SIZE
SCANNING ELECTRON MICROSCOPY
SOL-GEL PROCESS
SYNTHESIS
ULTRAVIOLET RADIATION
VIBRATING SAMPLE MAGNETOMETERS
X-RAY DIFFRACTION