Optical properties of composites based on polyethylene and monoclinic Y2O3:Eu3+ nanoparticles

Kostyukov, Anton I.; Panchenko, Valentina N.; Рахманова, М. И.; Nashivochnikov, Aleksandr A.; Matsko, Mikhail A.; Супрун, Е. А.

doi:10.1016/j.matchemphys.2021.125140

Cited by 15 publications

(6 citation statements)

References 32 publications

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“…Moreover, the as-synthesized Eu 3+ -doped yttrium compounds are selected as examples to investigate their quantum efficiencies. The photoluminescence quantum yields (PLQY) for the Y 2 O 3 :Eu 3+ , YBO 3 :Eu 3+ , and YVO 4 :Eu 3+ samples are determined to be 32.7, 48.7, and 57.1%, which are comparable to those of the as-reported Eu 3+ -doped yttrium compounds. − The result indicates that the as-obtained yttrium compounds with hollow structures are suitable for application as luminescent matrixes for lanthanide activator ions. The UC luminescence mechanism associated with Er 3+ and Ho 3+ ions involves a two-photon process (Figure k,l), which is similar to that of the as-synthesized Y 2 O 3 - and YBO 3 -based UC phosphors.…”

Section: Resultsmentioning

confidence: 71%

Controllable Synthesis, Formation Process, and Luminescence Performances of Diverse Yttrium Compounds with Hollow Structures

et al. 2022

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Hollow spherical Y 2 O 3 and YBO 3 have been prepared by a facile template-directed strategy using phenol-formaldehyde (PF) resin spheres as templates. The PF@Y(OH)CO 3 precursor can be fabricated by a simple precipitation route. The Y 2 O 3 hollow spheres are obtained via a direct annealing process, and the hollow spherical YBO 3 are fabricated via a hydrothermal route followed by an annealing process at the expense of the same PF@Y(OH)CO 3 precursor. The whole synthesis procedure is performed in aqueous solution without any surfactant or catalyst. Moreover, YVO 4 quasioctahedral microcrystals with spherical holes are obtained. The formation mechanisms of the yttrium compounds with different morphologies have been discussed. By incorporating proper rare earth activator ions into the Y 2 O 3 , YBO 3 , and YVO 4 hosts, the as-synthesized luminescent materials can exhibit eminent performances with both down-conversion and up-conversion luminescence. Furthermore, the as-fabricated light-emitting diode (LED) devices can emit dazzling characteristic emission light, which reveals that the phosphors have application potential in lighting and displays. This simple synthesis strategy may provide a new idea for the fabrication of inorganic compounds with perfect hollow structures and excellent properties.

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Section: Resultsmentioning

confidence: 71%

Controllable Synthesis, Formation Process, and Luminescence Performances of Diverse Yttrium Compounds with Hollow Structures

et al. 2022

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“…The synthesis of PE/TiO 2 composites was performed by in situ ethylene polymerization according to a previously published technique [14,15]. In the first step, the catalytic system TMC(P25) was prepared on the surface of a TiO 2 photocatalyst by sequential deposition of an organomagnesium compound, MgBu 2 , and TiCl 4 , onto TiO 2 (P25).…”

Section: Synthesis Of Pe/tio 2 (P25) By In Situ Ethylene Polymerizationmentioning

confidence: 99%

“…Previously, we showed that PE/nano-Al 2 O 3 and PE/Y 2 O 3 (Eu) composites can be obtained by using in situ ethylene polymerization [14,15]. To this end, a titanium-magnesium catalyst for ethylene polymerization was formed by the sequential deposition of a magnesium-aluminum complex (MAC) and TiCl 4 on a nano-Y 2 O 3 (Eu) surface.…”

Section: Introductionmentioning

confidence: 99%

Polymeric Floating Photocatalysts Based on PE/TiO2 Composites for the Removal of Organic Pollutants in Water

et al. 2023

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Polymeric floating photocatalysts based on polyethylene (PE)/TiO2 compositions were synthesized by in situ ethylene polymerization in the presence of a titanium–magnesium catalyst synthesized by the sequential deposition of a magnesium–aluminum complex and TiCl4 on commercial TiO2 P25. The optical band gap of the synthesized PE/TiO2 composites was shown to be 3.1–3.3 eV, which allowed for their use as photocatalysts for the utilization of solar light. The photocatalytic activity of the PE/TiO2 composites was studied for the degradation of methyl orange (MO) under irradiation with UV light (λmax = 384 nm). The composites containing 20–50 wt.% of PE were found to have an optimum combination between floatability and photocatalytic activity. The maximum photodegradation rate was observed at an MO concentration below 5 ppm. The polymeric PE/TiO2 floating photocatalysts could be used repeatedly, but the long-term exposure of the composites to UV radiation was accompanied by oxidation of the polymer.

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“…In the absence of lighting has obvious indication effect and beautification effect, which indicates a very high commercial value. 6…”

Section: Introductionmentioning

confidence: 99%

“…In the absence of lighting has obvious indication effect and beautification effect, which indicates a very high commercial value. 6 Y 2 O 3 has been widely studied in rare-earth-doped luminescent materials, which is itself an advanced ceramic material. Owing to its excellent physical and chemical stabilities, Y 2 O 3 is often used as a matrix material for rareearth-doped luminescent materials.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and surface hydrophobic modification of Y₂O₃:Eu³⁺phosphors

et al. 2023

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Optical properties of composites based on polyethylene and monoclinic Y2O3:Eu3+ nanoparticles

Cited by 15 publications

References 32 publications

Controllable Synthesis, Formation Process, and Luminescence Performances of Diverse Yttrium Compounds with Hollow Structures

Controllable Synthesis, Formation Process, and Luminescence Performances of Diverse Yttrium Compounds with Hollow Structures

Polymeric Floating Photocatalysts Based on PE/TiO2 Composites for the Removal of Organic Pollutants in Water

Fabrication and surface hydrophobic modification of Y₂O₃:Eu³⁺phosphors

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Optical properties of composites based on polyethylene and monoclinic Y2O3:Eu3+ nanoparticles

Cited by 15 publications

References 32 publications

Controllable Synthesis, Formation Process, and Luminescence Performances of Diverse Yttrium Compounds with Hollow Structures

Controllable Synthesis, Formation Process, and Luminescence Performances of Diverse Yttrium Compounds with Hollow Structures

Polymeric Floating Photocatalysts Based on PE/TiO2 Composites for the Removal of Organic Pollutants in Water

Fabrication and surface hydrophobic modification of Y2O3:Eu3+phosphors

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Fabrication and surface hydrophobic modification of Y₂O₃:Eu³⁺phosphors