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- Title
CoFe2O4 Nanomaterials: Effect of Annealing Temperature on Characterization, Magnetic, Photocatalytic, and Photo-Fenton Properties.
- Authors
To Loan, Nguyen Thi; Hien Lan, Nguyen Thi; Thuy Hang, Nguyen Thi; Quang Hai, Nguyen; Tu Anh, Duong Thi; Thi Hau, Vu; Van Tan, Lam; Van Tran, Thuan
- Abstract
In this research, structural, magnetic properties and photocatalytic activity of cobalt ferrite spinel (CoFe2O4) nanoparticles were studied. The samples were characterized by X-ray powder diffraction (XRD), energy dispersive X-ray (EDX), scanning electron microscopy (SEM), transmission electronic microscopy (TEM), Brunauer–Emmett–Teller (BET), Fourier transform infrared spectroscopy (FTIR), and UV-visible diffused reflectance spectroscopy (DRS) analysis. The XRD analysis revealed the formation of the single-phase CoFe2O4 with a cubic structure that is annealed at 500–700 °C in 3 h. The optical band gap energy for CoFe2O4 was determined to be in the range of 1.57–2.03 eV. The effect on the magnetic properties of cobalt ferrites was analyzed by using a vibrating sample magnetometer (VSM). The particle size and the saturation magnetization of cobalt ferrite nanoparticles increased with increasing annealing temperature. The photocatalytic activity of CoFe2O4 nanoparticles was investigated by using rhodamine B dye under visible light. The decomposition of rhodamine B reached 90.6% after 270 min lighting with the presence of H2O2 and CF500 sample.
- Subjects
FERRITES; COBALT; NANOSTRUCTURED materials; FOURIER transform infrared spectroscopy; MAGNETIC properties; TEMPERATURE effect; X-ray powder diffraction
- Publication
Processes, 2019, Vol 7, Issue 12, p885
- ISSN
2227-9717
- Publication type
Article
- DOI
10.3390/pr7120885