Epoxide synthesis of binary rare earth oxide aerogels with high molar ratios (1:1) of Eu, Gd, and Yb

Kameneva, Svetlana V.; Yorov, Kh. E.; Kamilov, Rustam Kh.; Kottsov, Sergey Yu.; Теплоногова, М. А.; Хамова, Т. В.; Popkov, M. A.; Tronev, I. V.; Baranchikov, А. Е.; Иванов, В. К.

doi:10.1007/s10971-023-06149-z

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…Inorganic silicate materials containing Eu 3+ and Tb 3+ are already known from a number of publications with a theoretical and applied focus [6][7][8][9][10][11]. Moreover, binary lanthanide aerogels are prepared during the search for porous materials with suitable optical and catalytic activities [12]. The mixed binary and ternary lanthanide oxide phases are also well-known examples of high-entropy materials [13].…”

Section: Introductionmentioning

confidence: 99%

Luminescence of Binary-Doped Silica Aerogel Powders: A Two-Step Sol-Gel Approach

Shandurkov,

Danchova,

Spassov

et al. 2024

Gels

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In this study, we report a novel synthesis of hydrophobic silica aerogel powder composites, functionalized and binary-doped with [Tb(phen)2](NO3)3 and [Eu(phen)2](NO3)3 nanocrystals, employing a two-step sol-gel methodology. The investigation delves into the structural elucidation, optical properties and thermal conductivity of these functionalized Tb(III)-Eu(III) composites. Our analysis includes diffuse reflectance spectra and excitation and luminescence spectra, highlighting the quantum yields of composites with varying chemical compositions. Remarkably, these samples exhibit a strong luminescence, with distinct hues of red or green based on the specific doping type and level. The detailed examination of excitation spectra and quantum yields establishes robust energy-transfer mechanisms from the 1,10-phenanthroline molecule to the lanthanide ions. Notably, our study uncovers a Tb3⁺→Eu3⁺ energy-transfer phenomenon within the binary functionalized samples, providing compelling evidence for a structural formation process occurring within the mesoporous framework of the aerogel powders.

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Section: Introductionmentioning

confidence: 99%

Luminescence of Binary-Doped Silica Aerogel Powders: A Two-Step Sol-Gel Approach

Shandurkov,

Danchova,

Spassov

et al. 2024

Gels

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show abstract

Section: Introductionmentioning

confidence: 99%

Luminescence of Binary Doped Silica Aerogel Powders: A Two-Step Sol-Gel Approach

Shandurkov,

Danchova,

Spassov

et al. 2023

Preprint

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In this study, we report a novel synthesis of hydrophobic silica aerogel powder composites, functionalized and binary-doped with [Tb(phen)₂](NO₃)₃ and [Eu(phen)₂](NO₃)₃ nanocrystals, employing a two-step sol-gel methodology. The investigation delves into the structural elucidation, optical properties and thermal conductivity of these functionalized Tb(III)-Eu(III) composites. Our analysis encompasses diffuse reflectance spectra, along with excitation and luminescence spectra, highlighting the quantum yields of composites with varying chemical composition. Remarkably, these samples exhibit a strong luminescence, with distinct hues of red or green color upon the specific doping type and level. The detailed examination of excitation spectra and quantum yields unequivocally establishes robust energy transfer mechanisms from the 1,10-phenanthroline molecule to the lanthanide ions. Notably, our study uncovers a Tb³⁺→Eu³⁺ energy transfer phenomenon within the binary functionalized samples, providing compelling evidence for a structural formation process occurring within the mesoporous framework of the aerogel powders.

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Epoxide-Mediated Synthesis of Two-Component Al2O3–TiO2 Aerogels and Their UV-Protective Characteristics

Polevoi,

Kolesnik,

Kopitsa

et al. 2023

Russ. J. Inorg. Chem.

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Epoxide synthesis of binary rare earth oxide aerogels with high molar ratios (1:1) of Eu, Gd, and Yb

Cited by 6 publications

References 45 publications

Luminescence of Binary-Doped Silica Aerogel Powders: A Two-Step Sol-Gel Approach

Luminescence of Binary-Doped Silica Aerogel Powders: A Two-Step Sol-Gel Approach

Luminescence of Binary Doped Silica Aerogel Powders: A Two-Step Sol-Gel Approach

Epoxide-Mediated Synthesis of Two-Component Al2O3–TiO2 Aerogels and Their UV-Protective Characteristics

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