Article (Scientific journals)
Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability.
Lopes horsth, Dienifer Fernanda; Primo, Julia de O; Balaba, Nayara et al.
2023In Beilstein Journal of Nanotechnology, 14, p. 467 - 477
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Keywords :
circular economy; colorimetry; sustainability; Color intensity; Color stability; Colored pigments; Dispersibilities; Hiding power; Metallic aluminum; Mixed oxide; Red iron oxide; Type structures; Materials Science (all); Physics and Astronomy (all); Electrical and Electronic Engineering; General Physics and Astronomy; General Materials Science
Abstract :
[en] Green chromium and red iron oxides are technically important pigments due to their high color intensity, good dispersibility in paints, and superior hiding power. We report on the synthesis of colored pigments of mixed oxides with a corundum-type structure. The pigments are obtained via the addition of coloring ions to boehmite from recycled metallic aluminium. X-ray diffractometry (XRD) and Raman spectroscopy confirmed the crystallographic phase. Additionally, the oxidation state 3+ responsible for the greenish (chromium) and reddish (iron) coloration of the mixed oxides was confirmed by XPS and visible-light absorption measurements. The colorimetric stability of the oxides in acid and alkaline environments was evaluated. After 240 h of exposure to harsh environments, both pigments demonstrated stability and showed no strong color difference.
Disciplines :
Chemistry
Author, co-author :
Lopes horsth, Dienifer Fernanda  ;  Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des Interactions Plasma-Surface ; Chemistry Departament, 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 ; Chemistry Departament, Universidade Estadual do Centro-Oeste, Guarapuava, 85040-167, Brazil
Balaba, Nayara ;  Chemistry Departament, Universidade Estadual do Centro-Oeste, Guarapuava, 85040-167, Brazil
Anaissi, Fauze J ;  Chemistry Departament, 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 :
Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability.
Publication date :
25 April 2023
Journal title :
Beilstein Journal of Nanotechnology
ISSN :
2190-4286
Publisher :
Beilstein-Institut Zur Forderung der Chemischen Wissenschaften, Germany
Volume :
14
Pages :
467 - 477
Peer reviewed :
Peer Reviewed verified by ORBi
Development Goals :
12. Responsible consumption and production
Research unit :
S882 - Chimie des Interactions Plasma-Surface
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Funding text :
D. F. L. H, J. d. O. P., and N. B. appreciate the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil (CAPES) – Finance Code 001 for a graduate scholarship, D. F. L. H. thanks UMONS for the PhD grant, J. d. O. P. thanks the FNRS for mobility grant (2021/V6/5/003–JG/MF–726). C. B. is a Research Associate of the FRS-FNRS, Belgium. C. B. and J. P. thank the Belgian Fund for Scientific Research under the FRFC contract EQP 40002995 (PHOTOFUN). F. J. A. is thankful for a CNPq Productivity grant (308625/2019-6) and the grants CNPq–427127/2018-1 and Fundação Araucária–CBPA-001/ 2016 project NARROWW (CONFAP-WBI).
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