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Título:
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Synthesis and microstructural properties of zinc oxide nanoparticles prepared by selective leaching of zinc from spent alkaline batteries using ammoniacal ammonium carbonate
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Autores:
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López, Félix A. ;
Cebriano Ramírez, Teresa ;
García Díaz, Irene ;
Fernández Sánchez, Paloma ;
Rodríguez, Olga ;
Lopez Fernandez, Ana
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Ltd., 2017-04-01
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Dimensiones:
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application/pdf
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Nota general:
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cc_by_nc_nd
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Tipo = Artículo
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Resumen:
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Two different precursors of zinc oxide were prepared via the ammoniacal ammonium carbonate leaching of the black mass obtained during the recycling of alkaline batteries. For a concentration of 0.1 mol/L of ammonium in the leaching solution, zinc basic carbonate, was obtained, while for higher ammonium concentrations (0.5 and 1 mol/L), zinc ammonium carbonate was the final product. These precursors were characterised by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FFIR), Thermogravimetric analysis (TGA/DTG) and Scanning electron microscopy (SEM), and calcined to obtain ZnO. Raman spectroscopy, X-ray diffraction and Transmission electron microscopy (TEM) analysis of the resulting zinc oxide samples indicated a wurtzite hexagonal lattice with a parameter values ranging from 3.23 angstrom to 3.30 angstrom, and c parameter values from 5.18 angstrom to 5.21 angstrom (values close to typical). The room temperature photoluminescence spectra of the zinc oxide samples showed two main bands: a high energy UV-blue band centred at either 412 or 382 nm (depending on the NH3 concentration of the leaching solution used), and a green band centred at 527 nm. These emission bands are comparable to those reported for pure zinc oxide.
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En línea:
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https://eprints.ucm.es/42581/1/Fsanchez%20P%2004%20POSTPRINT%2BEMB%2001_04_2019%2BCC.pdf
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