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Fe3O4/TiO2 core/shell nanocubes: Single-batch surfactantless synthesis, characterization and efficient catalysts for methylene blue degradation

Title
Fe3O4/TiO2 core/shell nanocubes: Single-batch surfactantless synthesis, characterization and efficient catalysts for methylene blue degradation
Authors
Abbas, M[Abbas, Mohamed]Rao, BP[Rao, B. Parvatheeswara]Reddy, V[Reddy, Venu]Kim, C[Kim, CheolGi]
DGIST Authors
Abbas, M[Abbas, Mohamed]; Reddy, V[Reddy, Venu]; Kim, C[Kim, CheolGi]
Issue Date
2014-08
Citation
Ceramics International, 40(7), 11177-11186
Type
Article
Article Type
Article
Keywords
Aromatic CompoundsCatalystCatalystsCatalytic ApplicationsCrystal StructureEfficiencyElemental CompositionsEnergy Dispersive SpectroscopyFe3O4/TiO2 NanocubesFourier Transform Infrared SpectroscopyHydrolysis and CondensationMagnetiteMethylene BlueMethylene Blue DegradationsNanocubesRecycleRecyclingSonochemistrySynthesis (Chemical)Titanium DioxideTransmission Electron MicroscopyUltraviolet IrradiationsVibrating Sample MagnetometerX Ray Diffraction Analysis
ISSN
0272-8842
Abstract
Amorphous titania coated magnetite (Fe3O4/TiO 2) nanocubes were successfully synthesized through hydrolysis and condensation of titanium isopropoxide and iron sulfate heptahydrate using single reaction sonochemical process for catalytic applications. X-ray diffractometry, transmission electron microscopy, energy dispersive spectroscopy and Fourier transform infrared spectroscopy were used to characterize the crystal structure, size and morphology, elemental composition, metal-metal and metal-oxygen bonds of the core/shell nanocubes. Magnetic properties of the samples were measured by a vibrating sample magnetometer at room temperature. Catalytic measurements on the samples showed an excellent efficiency for the degradation of methylene blue, and this efficiency was further promoted remarkably by addition of hydrogen peroxide (H2O2) within only 5 min of reaction time in the absence of ultraviolet irradiation. Even after recycling the sample for six times, the introduced catalyst was found to retain as much as 90% initial efficiency. A possible reaction mechanism for the sonochemical deposition of titania on the surface of magnetite nanocubes and also for the degradation process of methylene blue by the introduced catalyst was discussed. © 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/3066
DOI
10.1016/j.ceramint.2014.03.148
Publisher
Elsevier Ltd
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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