Structural and optical characterization of MnFe2O4 nanoparticles

Abstract

Manganese ferrite nanoparticles with chemical formula MnFe 2 O 4 have been synthesized by low temperature chemical coprecipitation method. The structural and optical properties of the nanoparticles were studied by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), fourier transform infra-red spectroscopy (FTIR) and UV-visible absorption spectroscopy. XRD confirm pure spinel phase formation of the prepared sample. All the observed peaks correspond to the standard diffraction pattern of manganese ferrite having JCPDS card number 74-2403. From the XRD data, the average crystallite size was calculated and found to be 27.40 nm. The FTIR spectrum shows the characteristic bands of the spinel ferrite. Morphology of the nanoferrites was given by SEM image revealing that the particles are approximately spherical in shape. The elemental composition along with their relative ratios was given by EDAX and was found to be in agreement with their initial calculated values. UV-visible absorption spectrum of the prepared sample shows characteristic absorption in visible range and from the UV-visible absorption data the band gap of the prepared sample was determined. MnFe 2 O 4 nanoparticles were found to possess a narrow band gap of 1.4 eV which may find applications in photocatalytic degradation of pollutants. The simple co-precipitation method proves to be an effective method for synthesis of pure phase manganese ferrite nanoparticles.

Manganese spinel ferrites‐composite nanotubes impregnated thermally endured cellulose acetate membranes for superior desalination application

“…Generally, in the infrared spectra, the vibrational peaks of metal oxides appear below 1000 cm −1 . Moreover, the bands below 700 cm −1 in the spectrum represent the spinel structural arrangement of ferrites 51–53 . Figure 6b is indicating another important peak at 539 cm −1 in MSF composite spectrum as well as at 534 cm −1 in loaded membrane (MSF14).…”

“…This noteworthy band position represents the intrinsic stretching vibrational mode of tetrahedral coordinated metal‐oxygen in the spinel structure. The band ensures the spinel structure of attached ferrites 35,53 …”

Structural formation of multifunctional NiMoO4 nanorods for thermoelectric applications

“…The absorption coefficient was quantified using the Beer–Lambert relationwhere A is the absorbance, and t is the thickness of the cubit equal to 1 cm (eqn (7)). 19 From this plot, NMO is optically active in the UV and visible regions as shown by the absorption wavelength of 310 nm to 450 nm.…”

Synergetic Effect of Calcium Doping on Catalytic Activity of Manganese Ferrite: DFT Study and Oxidation of Hydrocarbon

“…In recent decades, ferrite has gained extensive attention due to its high degree of specific resistivity, high dielectric constant, magnetic coactivity (soft/hard ferrites) and crystal structure (spinel/hexagonal) [1][2][3][4][5][6][7][8][9]. Similarly, doped ferrites are of great interest due to their frequent use in many scientific and technological areas, including catalysis [1][2][3][4][5][6][7][8][9][10]. Metal doping alters the electronic and magnetic properties; therefore, high-quality magnetic nanoparticles with excellent catalytic properties can be prepared by doping metals on ferrites because it increases magnetic saturation [9][10][11][12].…”