Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides

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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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Autor principal: Jobbágy, M.
Otros Autores: Soler-Illia, G.J.D.A.A, Regazzoni, A.E, Blesa, M.A
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: American Chemical Society 1998
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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040 |a Scopus  |b spa  |c AR-BaUEN  |d AR-BaUEN 
030 |a CMATE 
100 1 |a Jobbágy, M. 
245 1 0 |a Synthesis of Copper(II)-Containing Nickel(II) Hydroxide Particles as Precursors of Copper(II)-Substituted Nickel(II) Oxides 
260 |b American Chemical Society  |c 1998 
270 1 0 |m Regazzoni, A.E.; Unidad de Actividad Química, Comn. Nac. de Ener. Atómica, Avenida del Libertador 8250, (1429) Buenos Aires, Argentina 
506 |2 openaire  |e Política editorial 
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520 3 |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.  |l eng 
593 |a INQUIMAE, Fac. de Ciencias Exactas y Naturales, Ciudad Universitaria, (1428) Buenos Aires, Argentina 
593 |a Unidad de Actividad Química, Comn. Nac. de Ener. Atómica, Avenida del Libertador 8250, (1429) Buenos Aires, Argentina 
700 1 |a Soler-Illia, G.J.D.A.A. 
700 1 |a Regazzoni, A.E. 
700 1 |a Blesa, M.A. 
773 0 |d American Chemical Society, 1998  |g v. 10  |h pp. 1632-1637  |k n. 6  |p Chem. Mater.  |x 08974756  |w (AR-BaUEN)CENRE-5532  |t Chemistry of Materials 
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856 4 0 |u https://doi.org/10.1021/cm970820j  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_08974756_v10_n6_p1632_Jobbagy  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08974756_v10_n6_p1632_Jobbagy  |y Registro en la Biblioteca Digital 
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962 |a info:eu-repo/semantics/article  |a info:ar-repo/semantics/artículo  |b info:eu-repo/semantics/publishedVersion 
999 |c 63885 

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