Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides
Copperd(II)-containing nickel(II) hydroxide particles, i.e., α-Ni1-xCux(OH)2 (0 < x ≤ 0.4), have been prepared by aging 0.5 mol dm-3 urea, Ni(NO3)2, and Cu(NO3)2 solutions at 363 K. After 3 h, coprecipitation is almost complete. The formed solids, characterized by powder X-ray diffraction, sc...
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todo:paper_08974756_v10_n6_p1632_Jobbagy2023-10-03T15:43:49Z Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides Jobbágy, M. Soler-Illia, G.J.D.A.A. Regazzoni, A.E. Blesa, M.A. Copperd(II)-containing nickel(II) hydroxide particles, i.e., α-Ni1-xCux(OH)2 (0 < x ≤ 0.4), have been prepared by aging 0.5 mol dm-3 urea, Ni(NO3)2, and Cu(NO3)2 solutions at 363 K. After 3 h, coprecipitation is almost complete. The formed solids, characterized by powder X-ray diffraction, scanning electron microscopy, energy dispersion X-ray spectroscopy, and Fourier transform infrared spectroscopy, preserve the typical characteristics of α-Ni(OH)2. Still, their chemical composition, i.e., the copper-to-nickel ratio, is nearly that of the initial solutions. The analysis of the processes that take place during the formation of α-Ni1-xCux(OH)2 indicates that, although Cu(II) and Ni(II) precipitation are separate events, the simultaneity of am-Cu(OH)2 (amorphous copper(II) hydroxide) redissolution and α-Ni(OH)2 growth provides the appropriate conditions for the intercalation of aqueous Cu(II) species within the interlayer space of the growing α-Ni(OH)2 particles. Upon mild thermal treatment, i.e., T ≥ 523 K, α-Ni1-xCux(OH)2 powders are readily converted in Ni1-xCuxO (bunsenite), provided x ≤ 0.33; when x is larger than 0.33, the thermodynamically expected segregation of tenorite is realized. The ease of Ni1-xCuxO (bunsenite) formation is rationalized in terms of the topotatic relationship between the layered structure of the precursors and the rock salt structure of the mixed oxide. Fil:Jobbágy, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Soler-Illia, G.J.D.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08974756_v10_n6_p1632_Jobbagy |
| institution |
Universidad de Buenos Aires |
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I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
Copperd(II)-containing nickel(II) hydroxide particles, i.e., α-Ni1-xCux(OH)2 (0 < x ≤ 0.4), have been prepared by aging 0.5 mol dm-3 urea, Ni(NO3)2, and Cu(NO3)2 solutions at 363 K. After 3 h, coprecipitation is almost complete. The formed solids, characterized by powder X-ray diffraction, scanning electron microscopy, energy dispersion X-ray spectroscopy, and Fourier transform infrared spectroscopy, preserve the typical characteristics of α-Ni(OH)2. Still, their chemical composition, i.e., the copper-to-nickel ratio, is nearly that of the initial solutions. The analysis of the processes that take place during the formation of α-Ni1-xCux(OH)2 indicates that, although Cu(II) and Ni(II) precipitation are separate events, the simultaneity of am-Cu(OH)2 (amorphous copper(II) hydroxide) redissolution and α-Ni(OH)2 growth provides the appropriate conditions for the intercalation of aqueous Cu(II) species within the interlayer space of the growing α-Ni(OH)2 particles. Upon mild thermal treatment, i.e., T ≥ 523 K, α-Ni1-xCux(OH)2 powders are readily converted in Ni1-xCuxO (bunsenite), provided x ≤ 0.33; when x is larger than 0.33, the thermodynamically expected segregation of tenorite is realized. The ease of Ni1-xCuxO (bunsenite) formation is rationalized in terms of the topotatic relationship between the layered structure of the precursors and the rock salt structure of the mixed oxide. |
| format |
JOUR |
| author |
Jobbágy, M. Soler-Illia, G.J.D.A.A. Regazzoni, A.E. Blesa, M.A. |
| spellingShingle |
Jobbágy, M. Soler-Illia, G.J.D.A.A. Regazzoni, A.E. Blesa, M.A. Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides |
| author_facet |
Jobbágy, M. Soler-Illia, G.J.D.A.A. Regazzoni, A.E. Blesa, M.A. |
| author_sort |
Jobbágy, M. |
| title |
Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides |
| title_short |
Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides |
| title_full |
Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides |
| title_fullStr |
Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides |
| title_full_unstemmed |
Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides |
| title_sort |
synthesis of copper(ii)-containing nickel(ii) hydroxide particles as precursors of copper(ii)-substituted nickel(ii) oxides |
| url |
http://hdl.handle.net/20.500.12110/paper_08974756_v10_n6_p1632_Jobbagy |
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