Long-lasting CaAl2O4:Eu2+,Nd3+ phosphor-coupled g-C3N4 QDs composites for the round-the-clock photocatalytic methyl orange degradation

Zhou, Changshun; Zhan, Peimin; Zhao, Jun; Tang, Xufang; Liu, Wenlin; Jin, Min; Wang, Xinxing

doi:10.1016/j.ceramint.2020.08.136

Cited by 50 publications

(18 citation statements)

References 62 publications

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“…[3] Strontium aluminates that are activated by rare earth elements have been used in some applications, including emergency signs, safety textiles, and photochromic ink. [4] Several phosphorescent pigments have been described for their ability to develop a wide range of products with various emission colours, such as the greenish emission from SrAl 2 O 4 :Eu 2+ ,Dy 3+ , [5] bluish emission from CaAl 2 O 4 :Eu 2+ ,Nd 3+ , [6] and red emission from Y 2 O 2 S: Eu 3+ ,Mg 2+ ,Ti 4+ . [7] As a result of its high quantum efficiency, high recyclability, nonradioactivity, and good thermal, chemical, and photostability, LSAO has long been considered a key long-lasting phosphor.…”

Section: Introductionmentioning

confidence: 99%

Development of functional glow‐in‐the‐dark photoluminescence linen fabrics with ultraviolet sensing and shielding

et al. 2022

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Linen fibres were coated with a glow‐in‐the‐dark photoluminescence, flame‐retarding, and hydrophobic smart nanocomposite using the pad‐dry‐curing process. Ecologically friendly ammonium polyphosphate and lanthanide‐activated strontium aluminium oxide (LSAO) nanoparticles were immobilized into linen fabric using eco‐friendly room‐temperature‐vulcanizing silicone rubber. Different analytical techniques were used to examine the morphological characteristics and elemental compositions of LSAO nanoparticles and treated linen textiles. The self‐extinguishing properties of the treated linen textiles were tested for their fire resistance. After 24 washing cycles, the coated linen samples retained their flame‐retarding properties. The treated linen's superhydrophobicity rose in direct proportion to the LSAO concentration. After being excited at 365 nm, the colourless luminescent film that was coated on linen surface gave out an emission wavelength of 519 nm. The photoluminescent linen was monitored to create a range of different colours, including off‐white in daytime light and green under ultraviolet (UV) light radiation, according to the Commission Internationale de l'éclairage laboratory colorimetric coordinates and photoluminescence spectra. Emission, excitation, and lifetime spectral analysis of the treated linen revealed persistent phosphorescence. For mechanical and comfort evaluation, the coated linen textiles' bending length and air permeability were assessed. Good UV light shielding and enhanced antibacterial activity were detected in the treated linens.

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Section: Introductionmentioning

confidence: 99%

Development of functional glow‐in‐the‐dark photoluminescence linen fabrics with ultraviolet sensing and shielding

et al. 2022

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“…These captured light photons eventually release out of the traps. For example, strontium aluminates activated with rare earths have been used for phosphorescence in many applications including emergency signs, protective textiles, and luminescent inks. − The potential to produce numerous products with varying emission colors has long been associated with phosphorescent pigments, such as the greenish emissive SrAl 2 O 4 :Eu 2+ ,Dy 3+ ; the bluish emissive CaAl 2 O 4 :Eu 2+ ,Nd 3+ ; and the reddish Y 2 O 2 S:Mg 2+ ,Ti 4+ ; RESAO has long been recognized as important long-lasting phosphors because of their high quantum efficiency, high recyclability, nonradioactivity; as well as strong thermal, chemical, and photostabilities …”

Section: Introductionmentioning

confidence: 99%

Simple Preparation of Multifunctional Luminescent Textile for Smart Packaging

et al. 2022

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Linen has been a significant material for textile packaging. Thus, the application of the simple spray-coating method to coat linen fibers with a flame-retardant, antimicrobial, hydrophobic, and anticounterfeiting luminescent nanocomposite is an innovative technique. In this new approach, the ecologically benign room-temperature vulcanizing (RTV) silicone rubber was employed to immobilize the environmentally friendly Exolit AP 422 (Ex) and lanthanide-doped strontium aluminum oxide (RESAO) nanoscale particles onto the linen fibrous surface. Both morphological properties and elemental compositions of RESAO and treated fabrics were examined by transmission electron microscopy (TEM), scanning electron microscopy (SEM), wavelength-dispersive X-ray fluorescence (WD-XRF), Fourier transform infrared (FTIR) spectroscopy, and energy-dispersive X-ray spectroscopy (EDX). In the fire resistance test, the treated linen fabrics produced a char layer, giving them the property of self-extinguishing. Furthermore, the coated linen samples’ fire-retardant efficacy remained intact after 35 washing cycles. As the concentration of RESAO increased, so did the treated linen superhydrophobicity. Upon excitation at 366 nm, an emission band of 519 nm was generated from a colorless luminescent film deposited onto the linen surface. The coated linen displayed a luminescent activity by changing color from off-white beneath daylight to green beneath UV source, which was proved by CIE Lab parameters and photoluminescence spectral analysis. The photoluminescence effect was identified in the treated linen as reported by emission, excitation, and decay time spectral analysis. The comfort properties of coated linen fabrics were measured to assess their mechanical and comfort features. The treated linen exhibited excellent UV shielding and improved antimicrobial performance. The current simple strategy could be useful for large-scale production of multifunctional smart textiles such as packaging textiles.

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“…They do not suffer molecular structure-switching steric effects because their emission relies on electronic excitation and relaxation activities. This results in very stable and durable photochromism with efficient quantum yields. − Lanthanide-doped long-persistent photoluminescent nanomaterials have been reported as attractive photochromic compounds, such as CaAl 2 O 4 :Eu 2+ ,Nd 3+ and SrAl 2 O 4 :Eu 2+ ,Dy 3+ . , Recently, numerous lanthanide-doped phosphors of different colors have been reported, such as SrAl 2 O 4 :Eu 2+ ,Dy 3+ (green emitter), CaAl 2 O 4 :Eu 2+ ,Nd 3+ (blue emitter), and CaS:Eu 2+ ,Tm 3+ ,Ce 3+ (red emitter) . Luminescent inorganic pigments like lanthanide-doped strontium aluminates (LSAs) have displayed a critical role in the preparation of photochromic materials due to their rapid responsiveness and photostability .…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Transparent Photoluminescent Self-Healable Smart Ink for a Dual-Mode Security Authentication

Alkhamis

Alessa

Mogharbel

et al. 2022

Ind. Eng. Chem. Res.

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Ultraviolet-induced photochromism has been an attractive dual-mode security encoding approach to enhance the anticounterfeiting performance of commercial products. However, photochromic inks have recently reported major drawbacks, including high cost, low efficacy, and poor durability. Herein, we report the development of self-healing security ink using poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPS) immobilized with rare-earth-activated aluminate nanoparticles for advanced anticounterfeiting applications. Remarkably, self-healable security inks can ensure durability and photostability. The self-healing composite ink demonstrated ultraviolet-induced photochromism with high reversibility and photostability. Various self-healing composite inks of diverse emission properties were developed using various concentrations of rare-earth-activated aluminate nanoparticles. Homogeneous films were printed onto paper sheets, demonstrating a colorless appearance that changed to green under ultraviolet rays as proved by the CIE Lab. The morphological properties of the phosphor were examined, demonstrating a particle diameter of 4–9 nm. Various analytical methods were used to investigate the morphology and chemical composition of the prepared photochromic films. Both the rheological and mechanical properties of the ink solution and the ink-printed paper sheets were measured. The luminescent films had an excitation wavelength of 365 nm (colorless) and an emission peak at 520 nm (green). Various industries can benefit greatly from the current smart ink as an efficient strategy for the development of anticounterfeiting commercial products.

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Long-lasting CaAl2O4:Eu2+,Nd3+ phosphor-coupled g-C3N4 QDs composites for the round-the-clock photocatalytic methyl orange degradation

Cited by 50 publications

References 62 publications

Development of functional glow‐in‐the‐dark photoluminescence linen fabrics with ultraviolet sensing and shielding

Development of functional glow‐in‐the‐dark photoluminescence linen fabrics with ultraviolet sensing and shielding

Simple Preparation of Multifunctional Luminescent Textile for Smart Packaging

Preparation of a Transparent Photoluminescent Self-Healable Smart Ink for a Dual-Mode Security Authentication

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