NDLI: Room Temperature Ferromagnetism of Magnetically Recyclable Photocatalyst of Cu$_{1−x }$Mn$_{ x }$Fe$_{2}$O$_{4}$-TiO$

Content Provider	Springer Nature Link
Author	Manikandan, A. Hema, E. Durka, M. Seevakan, K. Alagesan, T. Arul Antony, S.
Copyright Year	2015
Abstract	Magnetically recyclable spinel Cu$_{1−x}$Mn$_{x}$Fe$_{2}$O$_{4}$ (0.0 ≤ x ≤ 0.5) ferrite nanophotocatalysts were synthesized by a simple one-pot microwave combustion method using glycine as the fuel. The synthesis process only took a few minutes to obtain CuFe$_{2}$O$_{4}$ nanopowders. The formation of nanocrystalline single-phase cubic spinel structure was confirmed by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR), energy dispersive X-ray (EDX) and selected area electron diffraction pattern (SAED) analyses. The surface morphology of the samples consists of nearly spherical shaped nanoparticles (NPs) with agglomeration, which was confirmed by high-resolution scanning electron microscopy (HR-SEM) and high resolution transmission electron microscope (HR-TEM) analyses. The optical band gap energy (E $_{g}$) was confirmed by UV-Vis diffuse reflectance spectrum (DRS) study, and the E $_{g}$ of undoped CuFe$_{2}$O$_{4}$ sample is 2.39 eV and it is increased from 2.51–2.81 eV with increasing the amount of Mn$^{2+}$ content (x = 0.1–0.5), due to the decrease of particle size. The magnetic hysteresis (M– H) curve showed ferromagnetic behavior for all compositions. The magnetization (M $_{s}$) of the samples monotonically increased with increasing Mn content x = 0.0–0.5. Smaller values of coercivity showed soft magnetic nature of Cu$_{1−x}$Mn$_{x}$Fe$_{2}$O$_{4}$ NPs. The photocatalytic degradation (PCD) of 4-chlorophenol (4-CP) under visible light using the spinel CuFe$_{2}$O$_{4}$ catalysts shows poor activity. Therefore, the present study leads to enhance the photocatalytic (PC) activity of spinel Cu$_{1−x}$Mn$_{x}$Fe$_{2}$O$_{4}$ NPs with the addition of TiO$_{2}$ catalyst using the PCD of 4-CP under visible light. It was found that the coupled Cu$_{1−x}$Mn$_{x}$Fe$_{2}$O$_{4}$-TiO$_{2}$ nanocomposite (NCs) photocatalysts exhibit excellent PC activity than that of Cu$_{1−x}$Mn$_{x}$Fe$_{2}$O$_{4}$ and TiO$_{2}$ catalysts. The sample Cu$_{0.5}$Mn$_{0.5}$Fe$_{2}$O$_{4}$-TiO$_{2}$ NCs showed greater performance than the other NCs. The enhanced PC ability of Cu$_{1−x}$Mn$_{x}$Fe$_{2}$O$_{4}$-TiO$_{2}$ NCs could be ascribed to the interconnected heterojunction of spinel Cu$_{1−x}$Mn$_{x}$Fe$_{2}$O$_{4}$ and TiO$_{2}$ catalysts.
Starting Page	1783
Ending Page	1795
Page Count	13
File Format	PDF
ISSN	15571939
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	28
Issue Number	6
e-ISSN	15571947
Language	English
Publisher	Springer US
Publisher Date	2015-01-13
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanoparticles Recyclable photocatalyst TiO$_{2}$ Optical properties Magnetic properties Strongly Correlated Systems, Superconductivity Magnetism, Magnetic Materials Condensed Matter Physics Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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