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Synthesis and Thermochromic Properties of Cr-Doped Al(2)O(3) for a Reversible Thermochromic Sensor
An inorganic thermochromic material based on Cr-doped Al(2)O(3) is synthesized using a solid-state method. The crystal structure, chemical composition, and morphology of the synthesized material are analyzed using X-ray diffraction, scanning electron microscopy coupled with an energy-dispersive X-ra...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459022/ https://www.ncbi.nlm.nih.gov/pubmed/28772834 http://dx.doi.org/10.3390/ma10050476 |
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author | Nguyen, Duy Khiem Lee, Heesoo Kim, In-Tae |
author_facet | Nguyen, Duy Khiem Lee, Heesoo Kim, In-Tae |
author_sort | Nguyen, Duy Khiem |
collection | PubMed |
description | An inorganic thermochromic material based on Cr-doped Al(2)O(3) is synthesized using a solid-state method. The crystal structure, chemical composition, and morphology of the synthesized material are analyzed using X-ray diffraction, scanning electron microscopy coupled with an energy-dispersive X-ray spectrometer, and Fourier transform infrared (FT-IR) spectroscopy. The color performances of the synthesized material are analyzed using a UV-VIS spectrometer. Finally, the thermochromism exhibited by the powdered samples at high temperatures is investigated. The material exhibits exceptional thermochromic property, transitioning from pink to gray or green in a temperature range of 25–600 °C. The change in color is reversible and is dependent on the surrounding temperature and chromium concentration; however, it is independent of the exposure time. This novel property of Cr-doped Al(2)O(3) can be potentially employed in reversible thermochromic sensors that could be used not only for warning users of damage due to overheating when the environmental temperature exceeds certain limits, but also for detecting and monitoring the temperature of various devices, such as aeronautical engine components, hotplates, and furnaces. |
format | Online Article Text |
id | pubmed-5459022 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54590222017-07-28 Synthesis and Thermochromic Properties of Cr-Doped Al(2)O(3) for a Reversible Thermochromic Sensor Nguyen, Duy Khiem Lee, Heesoo Kim, In-Tae Materials (Basel) Article An inorganic thermochromic material based on Cr-doped Al(2)O(3) is synthesized using a solid-state method. The crystal structure, chemical composition, and morphology of the synthesized material are analyzed using X-ray diffraction, scanning electron microscopy coupled with an energy-dispersive X-ray spectrometer, and Fourier transform infrared (FT-IR) spectroscopy. The color performances of the synthesized material are analyzed using a UV-VIS spectrometer. Finally, the thermochromism exhibited by the powdered samples at high temperatures is investigated. The material exhibits exceptional thermochromic property, transitioning from pink to gray or green in a temperature range of 25–600 °C. The change in color is reversible and is dependent on the surrounding temperature and chromium concentration; however, it is independent of the exposure time. This novel property of Cr-doped Al(2)O(3) can be potentially employed in reversible thermochromic sensors that could be used not only for warning users of damage due to overheating when the environmental temperature exceeds certain limits, but also for detecting and monitoring the temperature of various devices, such as aeronautical engine components, hotplates, and furnaces. MDPI 2017-04-28 /pmc/articles/PMC5459022/ /pubmed/28772834 http://dx.doi.org/10.3390/ma10050476 Text en © 2017 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nguyen, Duy Khiem Lee, Heesoo Kim, In-Tae Synthesis and Thermochromic Properties of Cr-Doped Al(2)O(3) for a Reversible Thermochromic Sensor |
title | Synthesis and Thermochromic Properties of Cr-Doped Al(2)O(3) for a Reversible Thermochromic Sensor |
title_full | Synthesis and Thermochromic Properties of Cr-Doped Al(2)O(3) for a Reversible Thermochromic Sensor |
title_fullStr | Synthesis and Thermochromic Properties of Cr-Doped Al(2)O(3) for a Reversible Thermochromic Sensor |
title_full_unstemmed | Synthesis and Thermochromic Properties of Cr-Doped Al(2)O(3) for a Reversible Thermochromic Sensor |
title_short | Synthesis and Thermochromic Properties of Cr-Doped Al(2)O(3) for a Reversible Thermochromic Sensor |
title_sort | synthesis and thermochromic properties of cr-doped al(2)o(3) for a reversible thermochromic sensor |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459022/ https://www.ncbi.nlm.nih.gov/pubmed/28772834 http://dx.doi.org/10.3390/ma10050476 |
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