New blue pigments based on Co2+ and La3+ doped hibonite for NIR-reflective coatings

New blue pigments based on Ca1-xLaxAl12-xCoxO19 (x = 0–0.5) were obtained by the combustion method, avoiding the expensive annealing step. The obtained pigments have a specific surface area between 3 and 5 m2/g. The crystallite size of Ca1-xLaxAl12-xCoxO19 pigments decreases from 44 to 26 nm, as the...

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Bibliographic Details
Published in:Materials today chemistry 2023-03, Vol.28, p.101391, Article 101391
Main Authors: Rus, I., Ianoș, R., Lazău, R., Păcurariu, C.
Format: Article
Language:English
Subjects:
Cobalt
Combustion synthesis
Cool pigments
Energy efficiency
Reflective coatings
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Summary:New blue pigments based on Ca1-xLaxAl12-xCoxO19 (x = 0–0.5) were obtained by the combustion method, avoiding the expensive annealing step. The obtained pigments have a specific surface area between 3 and 5 m2/g. The crystallite size of Ca1-xLaxAl12-xCoxO19 pigments decreases from 44 to 26 nm, as the substitution degree, x, increases from 0 to 0.5 apfu. Despite the low Co2+ content (
ISSN:2468-5194
2468-5194
DOI:10.1016/j.mtchem.2023.101391