[en] Aluminates have been used as synthetic inorganic pigments due to their structural stability. In this context, we report on the synthesis of blue aluminates obtained from the boehmite combination with Co2+ and Ni2+ ions and calcination at 1000 °C. The boehmite was obtained from recycling aluminum metal from can seals. The aluminates were characterized by X-ray diffractometry (XRD) and Raman spectroscopy. The oxidation state of the ions responsible for the color was evaluated by XPS and UV-vis, suggesting the presence of divalent Co and Ni ions. Colorimetry confirmed the blue coloration and different shades. The colorimetric stability of the blue aluminates in harsh environments for pigments was evaluated. Both pigments were stable after 240 hours of exposure, showing no strong color difference.
Disciplines :
Chemistry
Author, co-author :
Horsth, Dienifer F. L. ; Chimie des Interactions Plasma-Surface (ChIPS), Research Institute for Materials Science and Engineering, University of Mons, 7000 Mons, Belgium ; Departamento de Química, Universidade Estadual do Centro-Oeste, Guarapuava, 85040-167, Brazil
Primo, Julia de O.; Chimie des Interactions Plasma-Surface (ChIPS), Research Institute for Materials Science and Engineering, University of Mons, 7000 Mons, Belgium ; Departamento de Química, Universidade Estadual do Centro-Oeste, Guarapuava, 85040-167, Brazil
Balaba, Nayara; Departamento de Química, Universidade Estadual do Centro-Oeste, Guarapuava, 85040-167, Brazil
Anaissi, Fauze J. ; Departamento de Química, Universidade Estadual do Centro-Oeste, Guarapuava, 85040-167, Brazil
BITTENCOURT, Carla ; Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des Interactions Plasma-Surface
Language :
English
Title :
Color stability of blue aluminates obtained from recycling and applied as pigments
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Funders :
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Fonds De La Recherche Scientifique – FNRS Conselho Nacional de Desenvolvimento Científico e Tecnológico
