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Microwave-assisted combustion synthesis of nano iron oxide/iron-coated activated carbon, anthracite, cellulose fiber, and silica, with arsenic adsorption studies
Citation:
NADAGOUDA, M. N. AND D. A. LYTLE. Microwave-assisted combustion synthesis of nano iron oxide/iron-coated activated carbon, anthracite, cellulose fiber, and silica, with arsenic adsorption studies. Journal of Nanotechnology. Hindawi Publishing Corporation, New York, NY, 2011(ID 972486):8 p, (2011).
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To inform the public.
Description:
Combustion synthesis of iron oxide/iron coated carbons such as activated carbon, anthracite, cellulose fiber and silica is described. The reactions were carried out in alumina crucibles using a Panasonic kitchen microwave with inverter technology, and the reaction process was completed within a few minutes. The method used no additional fuel and nitrate, which is present in the precursor itself, to drive the reaction. The obtained samples were then characterized with X-ray mapping, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS), selected area diffraction pattern (SAED), transmission electron microscopy (TEM), X-ray diffraction (XRD), and inductively coupled plasma (ICP) spectroscopy. The size of the iron oxide/iron nanoparticle-coated activated carbon, anthracite, cellulose fiber and silica samples were found to be in the nano range (50-400 nm). The iron oxide/iron nanoparticles mostly crystallized into cubic symmetry which was confirmed by SAED. The XRD pattern indicated that iron oxide/iron nano particles existed in four major phases. i.e. -Fe2O3 -Fe2O3, Fe3O4 and Fe. These iron-coated activated carbon, anthracite, cellulose fiber and silica samples were tested for arsenic adsorption through batch experiments, revealing that few samples had significant arsenic adsorption.
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MICROWAVE-ASSISTED COMBUSTION SYNTHESIS OF NANO IRON OXIDE/IRON-COATED ACTIVATED CARBON, ANTHRACITE, CELLULOSE FIBER, AND SILICA, WITH ARSENIC ADSORPTION STUDIES
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