RT Journal Article
T1 From spent alkaline batteries to Zn_xMn_3__xO_4 by_xO4 bya hydrometallurgical route: synthesis and characterization
A1 Alcaraz Romo, Lorena
A1 Lopez Fernandez, Ana
A1 García Díaz, Irene
A1 Fernández Sánchez, Paloma
A1 Urbieta Quiroga, Ana Irene
A1 López, Félix A.
AB 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 <= x >= 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.
PB Royal Society of Chemistry
SN 2046-2069
YR 2018
FD 2018-09-28
LK https://hdl.handle.net/20.500.14352/12946
UL https://hdl.handle.net/20.500.14352/12946
LA eng
NO © The Royal Society of Chemistry 2018.Lorena Alcaraz was funded by the Comunidad de Madrid vía a Postdoctoral Grant (Ref. PEJD-2016/AMN-2314) contract co-nanced by the European Social Fund. Ana López Fernández was funded by the Comunidad de Madrid vía a Junior Technical Grant (Ref. PEJ15/AMB/Al-0049) contract co-financed by the European Social Fund. This work has been partially supported by MINECO/FEDER (MAT2015-65274-R).
NO Ministerio de Economía y Competitividad (MINECO)/FEDER
NO Comunidad de Madrid - European Social Fund
NO Comunidad de Madrid via a Junior Technical Grant - European Social Fund
DS Docta Complutense
RD 28 abr 2024