Red-light-emitting polymer composite based on PVDF membranes and Europium phosphor using Buriti Oil as plasticizer

Bispo‐Jr, Airton G.; Oliveira, Nagyla A.; Cardoso, Celso Xavier; Lima, Sergio A. M.; Job, Aldo Eloízo; Osorio-Román, Igor O.; Danna, Caroline Silva; Pires, Ana Maria

doi:10.1016/j.matchemphys.2018.06.057

Cited by 14 publications

(13 citation statements)

References 59 publications

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“…4,23 The peaks at 18.4°a nd 26.7°represent the α PVDF phase and are part of the XRD patterns of the ZIF-8 embedded MMMs. 24 The peak at 22.6°is assigned to the β phase of PVDF. 25 Similar results have been obtained by various researchers as reported in the literature, which shows ZIF-8 nanoparticles with a uniform crystalline structure.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of ZIF-8-based PVDF mixed matrix membranes and application to treat pulp and paper industry wastewater using a membrane bioreactor

Sonawane

Murthy

2022

Environ. Sci.: Water Res. Technol.

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Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of ZIF-8-based PVDF mixed matrix membranes and application to treat pulp and paper industry wastewater using a membrane bioreactor

Sonawane

Murthy

2022

Environ. Sci.: Water Res. Technol.

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“…The XRD spectra of PVDF, ZIF-8/PVDF(#3–6), and PEG@ZIF-8/PVDF#6 membranes are illustrated in Figure a. The peaks at 18.4 and 26.7° are assigned to the α phase of PVDF . The peak at 20.6° is assigned to the β phase of PVDF .…”

Section: Resultsmentioning

confidence: 99%

PEG@ZIF-8/PVDF Nanocomposite Membrane for Efficient Pervaporation Desulfurization via a Layer-by-Layer Technology

Sun

Magnuson

et al. 2020

ACS Appl. Mater. Interfaces

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The desulfurization property of conventional mixed matrix membranes (MMMs) cannot meet the necessary demand due to particles aggregation and interface defects. Here, we put forward a layer-by-layer (LBL) approach to make a novel PEG@ZIF-8/poly(vinylidene difluoride)(PVDF) composite membrane for pervaporation desulfurization. In this way, a ZIF-8 layer is covered on the surface of the PVDF porous membrane via an in situ growth method. Then, a PEG layer is covered on the ZIF-8 layer by a casting method. Compared with pristine PEG membranes, the separation performance of the ZIF-8@PEG/PVDF nanocomposite membrane increased significantly. This can be attributed to the homogeneous ZIF-8 particle layer and better compatibility between the poly(ethylene glycol) (PEG) matrix and ZIF-8 particles. The membrane achieves a maximum total flux of 3.08 kg·m–2·h–1 at the third in situ growth cycles of ZIF-8 particles and a maximum sulfur enrichment factor of 7.6 at the sixth in situ growth cycles of ZIF-8 particles.

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“…When it comes to commercial applications, powdered nanophosphors present a variety of issues which have precluded their use. Powdered nanoparticles suffer from low thermal stability, low photostability, poor mechanical strength, tendency to aggregate, and are prone to water adsorption on their surfaces [22].For application as light emitting devices, selected phosphor powders are first mixed with glues, and then the mixture is used to cover blue emitting semiconducting GaN/InGaN chips [23]. Though, adding the glue presents challenges, the thickness of the emissive layer is hard to control, and as a result, the reproducibility of light emission varies [24].…”

Section: Introductionmentioning

confidence: 99%

“…Though, adding the glue presents challenges, the thickness of the emissive layer is hard to control, and as a result, the reproducibility of light emission varies [24]. This could be tackled by incorporating phosphor particles within a polymer matrix [23,24]. It is also reported that some of the oxide phosphor powders readily get converted into hydroxide on storage [25].…”

Section: Introductionmentioning

confidence: 99%

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Luminescent PVDF nanocomposite films and fibers encapsulated with La2Hf2O7:Eu3+ nanoparticles

et al. 2020

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Luminescent films and fibers are in high demand in display devices and optoelectronics owing to their higher flexibility and mechanical strength compared to powder samples. Keeping that in mind, we have encapsulated La 2 Hf 2 O 7 :Eu 3+ (LHOE) nanoparticles (NPs) synthesized by a molten salt method into polyvinylidene fluoride (PVDF) films and fibers. The LHOE-PVDF nanocomposite fibers were manufactured using a Forcespinning® technology while the counterpart films were fabricated by a drop-casting technique. Their photophysical properties were analyzed and compared. Specifically, the red emission with optimum lifetime, color coordinates, and branching ratio of the LHOE NPs can be reproduced even when incorporated inside the PVDF films and fibers. Our studies demonstrate that the LHOE-PVDF films have better emission output, excited-state lifetime, quantum yield, and color purity than the fibers. This is attributed to lower defect density and better surface texture of the LHOE-PVDF films compared to the fibers. Based on the Judd-Ofelt analysis, we have also elucidated that the Eu-O bond is more polarizable and has a higher degree of covalency in the LHOE-PVDF films compared to that in the fibers. The trend of the Judd-Ofelt parameters suggested that Eu 3+ has a more asymmetric environment in the films compared to the fibers which impart higher red color purity to the former.

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Red-light-emitting polymer composite based on PVDF membranes and Europium phosphor using Buriti Oil as plasticizer

Cited by 14 publications

References 59 publications

Synthesis and characterization of ZIF-8-based PVDF mixed matrix membranes and application to treat pulp and paper industry wastewater using a membrane bioreactor

Synthesis and characterization of ZIF-8-based PVDF mixed matrix membranes and application to treat pulp and paper industry wastewater using a membrane bioreactor

PEG@ZIF-8/PVDF Nanocomposite Membrane for Efficient Pervaporation Desulfurization via a Layer-by-Layer Technology

Luminescent PVDF nanocomposite films and fibers encapsulated with La2Hf2O7:Eu3+ nanoparticles

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