Preparation and photochromic behavior of borosilicate aluminate glass for smart window and curtain wall applications |
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Affiliation: | 1. Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming, 650093, People''s Republic of China;2. College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, People''s Republic of China;1. Yantai University, Yantai, 264005, Shandong, China;2. Department of Physics and Astronomy, KU Leuven, 3001, Leuven, Belgium;3. School of Materials Science and Engineering, University of Jinan, Jinan, 250022, China;4. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China;5. School of Materials Science and Physics, China University of Mining and Technology, Xuzhou, 221116, China |
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Abstract: | Sunlight-induced photochromic glass exhibits attractive application prospects in the field of architecture materials. In this work, a series of borosilicate aluminate photochromic glasses containing AgCl nanocrystals were prepared. The photochromic property and mechanisms were systematically investigated. The color of the glass turned from transparent to black (or dark grey) under the irradiation of 365 nm ultraviolet light (or sunlight). Placing in a dark environment, the color of photochromic glass gradually restores to its initial state. From the results of in situ TEM and XPS measurement, it is found that the photochromic and self-bleaching behavior of borosilicate aluminate glass originated from the formation and decomposition of silver nanoparticles. Utilizing the photochromic and self-bleaching properties of the glass, the transmittance of the glass could be reversibly modulated. The cycle measurement shows excellent repeatability, demonstrating the potential application of AgCl-contained borosilicate aluminate photochromic glass in the fields of smart building windows and curtain walls. |
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Keywords: | Glass Photochromism Sunlight irradiation Smart materials |
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