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Synthesis and characterization of novel yellow-green Al-doped Y3Fe5O12 nano-pigments with high NIR reflectance.
- Source :
-
Journal of Alloys & Compounds . Mar2022, Vol. 896, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • Novel yellow-green Al-doped Y 3 Fe 5 O 12 nano-pigments are effectively synthesized via solution combustion method. • The Y 3 Fe 4 AlO 12 nano-pigments demonstrate the high NIR reflectance of 87.66% and great acid/alkali resistance. • Compared with the similar commercial pigment, 7.6 °C can be reduced by Y 3 Fe 4 AlO 12 pigment. • The synthetic pigments have potential to be used in cool coatings and to mitigate the urban heat island effect. The pigments with high near-infrared (NIR) reflectance hold great promise toward both fundamental types of researches and applications for the realization of comfortable indoor-temperature by mitigating urban heat island effect. However, the facile yet simple method for the NIR reflective pigments with bright color and non-toxic feature remains a huge challenge, limiting their practical application. Herein, we proposed a mild and universal method of solution combustion for constructing the non-toxic and NIR reflective yellow-green pigments of Al-doped Y 3 Fe 5 O 12. The Y 3 Fe 4 AlO 12 pigment presented a high NIR reflectance of 87.66%, and an outstanding acid/alkali resistance. Moreover, the pigment had an impressive color performance (L* = 78.72, a* = − 4.05, b* = 40.04). Besides, the practical near-infrared reflection performance revealed that the transient surface temperature of the Y 3 Fe 4 AlO 12 pigment was 7.6 °C lower than that of the pigment with similar color on the market. This research supplied high NIR reflecting pigments of Y 3 Fe 5−x Al x O 12 as promising coatings for roofs and exterior walls of buildings, acting as a favorable solution for urban heat island effect. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PIGMENTS
*URBAN heat islands
*EXTERIOR walls
*REFLECTANCE
*SURFACE temperature
Subjects
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 896
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 154452278
- Full Text :
- https://doi.org/10.1016/j.jallcom.2021.162883