The pH-dependent reactions in the sonochemical synthesis of luminescent fluorides: The quest for the formation of KY3F10 crystal phases
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Other documents of the author: Serna-Gallén, Pablo; Beltrán Mir, Héctor; Cordoncillo, Eloisa
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comunitat-uji-handle3:10234/8639
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Title
The pH-dependent reactions in the sonochemical synthesis of luminescent fluorides: The quest for the formation of KY3F10 crystal phasesDate
2022-06Publisher
ElsevierISSN
1350-4177Bibliographic citation
Serna-Gallén P, Beltrán-Mir H, Cordoncillo E. The pH-dependent reactions in the sonochemical synthesis of luminescent fluorides: The quest for the formation of KY3F10 crystal phases. Ultrason Sonochem. 2022 Jun;87:106059. doi: 10.1016/j.ultsonch.2022.106059. Epub 2022 Jun 6. PMID: 35691111; PMCID: PMC9190047.Type
info:eu-repo/semantics/articlePublisher version
https://pubmed.ncbi.nlm.nih.gov/35691111/Version
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Abstract
In this study Eu3+-doped yttrium fluorides were designed by ultrasound-assisted processes at different pH values (4.0-9.0). This novel strategy has enabled to obtain materials with intriguing morphologies and modulated ... [+]
In this study Eu3+-doped yttrium fluorides were designed by ultrasound-assisted processes at different pH values (4.0-9.0). This novel strategy has enabled to obtain materials with intriguing morphologies and modulated crystal structures: α-KY3F10, δ-KY3F10·xH2O, and Y(OH)3-xFx. To date, the literature has primarily focused only on the α-phase of KY3F10. Yet, explaining the formation of the mostly uncharted δ-phase of KY3F10 remains a challenge. Thus, this paper offers the key to synthesizing both the α and the δ-phases of KY3F10 and also reports the first ultrasound-assisted process for the preparation of yttrium hydroxyfluorides. It is also unraveled the connection between the different pH-dependent reactions and the formation mechanisms of the compounds. In addition to this, the unique features of the Eu3+ ion have allowed to conduct a thorough study of the different materials and have endowed the compounds with photoluminescent properties. The results underscore a highly tunable optical response, with a wide gamut of color emissions (from orangish to red hues), lifetimes (from 7.9 ms to 1.1 ms) and quantum efficiencies (98-28%). The study unveils the importance of sonochemistry in obtaining luminescent fluorides with controlled crystal structures that can open up new avenues in the synthesis and design of inorganic materials. [-]
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Ultrason Sonochem. vol. 87, jun (2022)Funder Name
Ministerio de Ciencia e Innovación | Universitat Jaume I
Project code
PID2020-116149 GB-I00 | UJI-B2019-41
Project title or grant
Propiedades avanzadas en materiales fotónicos y electrocerámicos basados en pirocloros | Electrocerámicas avanzadas, una apuesta tecnológica de futuro
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info:eu-repo/semantics/openAccess
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