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Título:
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From spent alkaline batteries to Zn_xMn_3__xO_4 by_xO4 bya hydrometallurgical route: synthesis and characterization
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Autores:
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Alcaraz Romo, Lorena ;
Lopez Fernandez, Ana ;
García Díaz, Irene ;
Fernández Sánchez, Paloma ;
Urbieta Quiroga, Ana Irene ;
López, Félix A.
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Tipo de documento:
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texto impreso
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Editorial:
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Royal Society of Chemistry, 2018-09-28
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Dimensiones:
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application/pdf
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Nota general:
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cc_by
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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Tipo = Artículo
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Resumen:
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A series of Zn/Mn binary oxides with different molar ratios (1.4-11) were synthesized via co-precipitation from a solution obtained through the acidic (HCl) leaching of a black mass originating from the mechanical recycling of spent alkaline and Zn-C batteries. The oxides obtained were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Magnetic properties of the samples were also investigated. The Raman spectroscopy results showed all the binary metallic oxides belong to the ZnxMn3-xO4 (0.25 = 1.75) type. All showed a spinel crystalline structure. The saturation magnetization decreases with the Zn_xMn_3_xO_4 (0.25 # x $ 1.75) type. All showed a spinel crystalline structure. The saturation magnetization decreases with the Zn/Mn molar ratio; a maximum of 13.19 emu g__1 was found for the molar ratio of 11 at the Curie temperature (25.5 K). XPS showed that all the synthesized compounds contained Mn_2_+, Mn_3_+ and Mn4+. Mn_2_+ was the most prominent at a molar ratio of 11, Mn_3_+ was most common at a molar ratio of 2, and Mn_4_+ at 1.4.
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En línea:
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https://eprints.ucm.es/50436/1/FS%C3%A1nchez%20P%2005%20LIBRE%2BCC.pdf
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