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Synthesis of Blue Gahnite (ZnAl(2)O(4):Co, Nd): A Cost-Effective Method for Producing Solar-Reflective Pigments for Cool Coatings
Developing strategies for the green synthesis of novel materials, such as pigments for protection from solar radiation, is a fundamental research subject in material science to mitigate the heat island effect. Within this perspective, the current study reports on the synthesis of blue pigments of Zn...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9963338/ https://www.ncbi.nlm.nih.gov/pubmed/36837325 http://dx.doi.org/10.3390/ma16041696 |
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author | Primo, Julia de Oliveira Horsth, Dienifer F. L. Balaba, Nayara Umek, Polona Anaissi, Fauze J. Bittencourt, Carla |
author_facet | Primo, Julia de Oliveira Horsth, Dienifer F. L. Balaba, Nayara Umek, Polona Anaissi, Fauze J. Bittencourt, Carla |
author_sort | Primo, Julia de Oliveira |
collection | PubMed |
description | Developing strategies for the green synthesis of novel materials, such as pigments for protection from solar radiation, is a fundamental research subject in material science to mitigate the heat island effect. Within this perspective, the current study reports on the synthesis of blue pigments of ZnAl(2)O(4):M (M = Co(2+) and Co(2+)/Nd(3+)) using recycled metallic aluminum (discarded can seal) with reflective properties of Near-infrared radiation. The pigments were characterized by XRD, SEM, XPS, UV-Vis, NIR diffuse reflectance spectroscopy, and CIE-1976 L*a*b* color measurements. The wettability of the coatings containing the synthesized pigments was also evaluated. The structural characterization showed that the pigments present the Gahnite crystalline phase. Colorimetric measurements obtained by the CIEL*a*b* method show values correlated to blue pigments attributed to Co(2+) ions in tetrahedral sites. The pigments exhibit high near-infrared solar reflectance (with R% ≥ 60%), with an enhancement of nearly 20% for the pigment-containing neodymium when applied in white paint, indicating that the prepared compounds have the potential to be energy-saving color pigments for coatings. |
format | Online Article Text |
id | pubmed-9963338 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-99633382023-02-26 Synthesis of Blue Gahnite (ZnAl(2)O(4):Co, Nd): A Cost-Effective Method for Producing Solar-Reflective Pigments for Cool Coatings Primo, Julia de Oliveira Horsth, Dienifer F. L. Balaba, Nayara Umek, Polona Anaissi, Fauze J. Bittencourt, Carla Materials (Basel) Article Developing strategies for the green synthesis of novel materials, such as pigments for protection from solar radiation, is a fundamental research subject in material science to mitigate the heat island effect. Within this perspective, the current study reports on the synthesis of blue pigments of ZnAl(2)O(4):M (M = Co(2+) and Co(2+)/Nd(3+)) using recycled metallic aluminum (discarded can seal) with reflective properties of Near-infrared radiation. The pigments were characterized by XRD, SEM, XPS, UV-Vis, NIR diffuse reflectance spectroscopy, and CIE-1976 L*a*b* color measurements. The wettability of the coatings containing the synthesized pigments was also evaluated. The structural characterization showed that the pigments present the Gahnite crystalline phase. Colorimetric measurements obtained by the CIEL*a*b* method show values correlated to blue pigments attributed to Co(2+) ions in tetrahedral sites. The pigments exhibit high near-infrared solar reflectance (with R% ≥ 60%), with an enhancement of nearly 20% for the pigment-containing neodymium when applied in white paint, indicating that the prepared compounds have the potential to be energy-saving color pigments for coatings. MDPI 2023-02-17 /pmc/articles/PMC9963338/ /pubmed/36837325 http://dx.doi.org/10.3390/ma16041696 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Primo, Julia de Oliveira Horsth, Dienifer F. L. Balaba, Nayara Umek, Polona Anaissi, Fauze J. Bittencourt, Carla Synthesis of Blue Gahnite (ZnAl(2)O(4):Co, Nd): A Cost-Effective Method for Producing Solar-Reflective Pigments for Cool Coatings |
title | Synthesis of Blue Gahnite (ZnAl(2)O(4):Co, Nd): A Cost-Effective Method for Producing Solar-Reflective Pigments for Cool Coatings |
title_full | Synthesis of Blue Gahnite (ZnAl(2)O(4):Co, Nd): A Cost-Effective Method for Producing Solar-Reflective Pigments for Cool Coatings |
title_fullStr | Synthesis of Blue Gahnite (ZnAl(2)O(4):Co, Nd): A Cost-Effective Method for Producing Solar-Reflective Pigments for Cool Coatings |
title_full_unstemmed | Synthesis of Blue Gahnite (ZnAl(2)O(4):Co, Nd): A Cost-Effective Method for Producing Solar-Reflective Pigments for Cool Coatings |
title_short | Synthesis of Blue Gahnite (ZnAl(2)O(4):Co, Nd): A Cost-Effective Method for Producing Solar-Reflective Pigments for Cool Coatings |
title_sort | synthesis of blue gahnite (znal(2)o(4):co, nd): a cost-effective method for producing solar-reflective pigments for cool coatings |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9963338/ https://www.ncbi.nlm.nih.gov/pubmed/36837325 http://dx.doi.org/10.3390/ma16041696 |
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