| Title |
Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability |
| ID_Doc |
22842 |
| Authors |
Horsth, DFL; Primo, JD; Balaba, N; Anaissi, FJ; Bittencourt, C |
| Title |
Mixed oxides with corundum-type structure obtained from recycling can seals as paint pigments: color stability |
| Year |
2023 |
| Published |
|
| DOI |
10.3762/bjnano.14.37 |
| Abstract |
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 mea-surements. 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. |
| Author Keywords |
circular economy; colorimetry; sustainability |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000967822700001 |
| WoS Category |
Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied |
| Research Area |
Science & Technology - Other Topics; Materials Science; Physics |
| PDF |
https://www.beilstein-journals.org/bjnano/content/pdf/2190-4286-14-37.pdf
|