INTEQUI 20941
INSTITUTO DE INVESTIGACIONES EN TECNOLOGIA QUIMICA
Unidad Ejecutora - UE
artículos
Título:
Effect of pH value and calcination temperature on synthesis and characteristics of Cu−Ni nano-alloys
Autor/es:
MARÍA DE LOS A. CANGIANO; MANUEL W. OJEDA; MARÍA DEL C. RUIZ
Revista:
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2015 vol. 25 p. 3664 - 3677
ISSN:
1003-6326
Resumen:
Cu−Ni nano-alloys were prepared using precursors synthesized by the citrate-gel method. The effects of initial solution pHvalue and calcination temperature on the composition, crystalline structure, purity, morphology, homogeneity and grain size ofCu−Ni nanoparticles were investigated. Both the parameters significantly affect the crystalline structure, composition and grain size.Cu−Ni alloys prepared at pH value of 1 do not contain impurities, and their compositions are Cu0.42Ni0.58, Cu0.45Ni0.55 and Cu0.52Ni0.48reduced at 300, 400 and 500 °C, respectively. The grain size grows with the increase of calcination temperature for the precursorprepared at pH values of 1.6 and 3. The Ni content of the alloys gradually increases with the increase of calcination temperature atpH value of 3.
