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- Title
A Novel One-Pot Combustion Synthesis and Opto-magnetic Properties of Magnetically Separable Spinel MnMgFe O(0.0 ≤ x ≤ 0.5) Nanophotocatalysts.
- Authors
Manikandan, A.; Durka, M.; Seevakan, K.; Antony, S.
- Abstract
Magnetically separable spinel MnMgFeO (0.0 ≤ x ≤ 0.5) nano-photocatalysts was synthesized by a facile microwave-assisted combustion method. The formation of single-phase cubic spinel structure was confirmed by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR), and energy dispersive X-ray (EDX) analyses. The morphology of the samples consists of sphere-like nanoparticles (NPs) structure, which was confirmed by high-resolution scanning electron microscopy (HR-SEM) and high-resolution transmission electron microscopy (HR-TEM) analyses. The energy band gap of the samples was confirmed by UV-Visible diffuse reflectance spectroscopy (UV-Vis DRS) study and the band gap of pure MgFeO sample is 2.02 eV, and it is increased with increasing the amount of Mn dopant, due to the decrease of particle size. The magnetic measurements (VSM) showed ferromagnetic behavior for all compositions. The present study leads to enhance the photocatalytic activity of spinel MnMgFeO NPs with the addition of TiO catalyst using the photo-decomposition of 4-chloro phenol (4-CP) under visible light. It was found that the combined nanocomposite (NCs) MnMgFeO-TiOphotocatalysts exhibit excellent photocatalytic activity than that of pure TiO or MnMgFeO. The enhanced photocatalytic ability of MnMgFeO-TiO NCs could be attributed to the interconnected heterojunction of spinel MnMgFeO and TiO catalysts.
- Subjects
SELF-propagating high-temperature synthesis; NANOPARTICLE synthesis; SPINEL; MANGANESE compounds; CHEMICAL synthesis; MAGNETIC properties of manganese compounds; PHOTOCATALYSTS
- Publication
Journal of Superconductivity & Novel Magnetism, 2015, Vol 28, Issue 4, p1405
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-014-2864-x