Preparation of photoluminescent and anticorrosive epoxy paints immobilized with nanoscale graphene from sugarcane bagasse agricultural waste

Al‐nami, Samar Y.; Al‐Qahtani, Salhah D.; Snari, Razan M.; Ibarhiam, Saham F.; Alfi, Alia Abdulaziz; Aldawsari, Afrah M.; El‐Metwaly, Nashwa M.

doi:10.1007/s11356-022-20111-6

Cited by 14 publications

(8 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pure SrAl 2 O 4 's monoclinic phase (JCPDS ID: 74‐0794) was found to match with the phosphor diffraction data (Khattab et al, 2021; Mokhtar et al, 2021). This also proved high purity of the phosphor nanoparticles and the presence of Eu 2+ and Dy 3+ at extremely low contents demonstrating nearly no effects on the crystal lattice of SrAl 2 O 4 (Al‐Nami et al, 2022; Atta, 2021). The absence of other diffraction signals proved low temperature monoclinic phase.…”

Section: Resultsmentioning

confidence: 82%

Development of photoluminescent artificial nacre‐like nanocomposite from polyester resin and graphene oxide

Hameed

Snari

Alaysuy

et al. 2022

Microscopy Res & Technique

Self Cite

View full text Add to dashboard Cite

Long-lasting phosphorescent nacre-like material was simply prepared from a nanocomposite of inorganic and organic materials. Low molecular weight unsaturated polyester (PET), graphene oxide (GO), and nanoparticles of rare-earth activated aluminate pigment were used in the preparation process of an organic/inorganic hybrid nanocomposite. Using methylethylketone peroxide (MEKP) as a hardener, we were able to develop a fluid solution that hardens within minutes at room temperature.Covalent and hydrogen bonds were introduced between the polyester resin and graphene oxide nanosheets. The interface interactions of those bonds resulted in toughness, excellent tensile strength, and high durability. The produced nacre substrates demonstrated long-persistent and reversible luminescence. The excitation of the produced nacre substrates at 365 nm resulted in a 524 nm emission. After being exposed to UV light, the photoluminescent nacre substrates became green. The increased superhydrophobic activity of the produced nacre substrates was achieved without affecting their physico-mechanical properties. Highlights• Colorless photoluminescent smart nacre-like nanocomposites were prepared.• Graphene oxide and polyester were mixed with phosphor nanoparticles at 25 C.• Photostable long-persistent phosphorescence lighting was observed in the dark.• Photochromic change to green emission was detected under ultraviolet light.• The nacre-like composites exhibit improved hardness and hydrophobicity.

show abstract

Section: Resultsmentioning

confidence: 82%

Development of photoluminescent artificial nacre‐like nanocomposite from polyester resin and graphene oxide

Hameed

Snari

Alaysuy

et al. 2022

Microscopy Res & Technique

Self Cite

View full text Add to dashboard Cite

show abstract

“…The LANPs usually provide two emission bands of blue (shorter wavelength) and green (longer wavelength) color emissions that originate from two different strontium locations in the SrAl 2 O 4 crystal. However, the ambient thermal quenching considerably reduces the intensity of the blue peak [ 56 ]. As a result, we could only see emissions in a greenish color.…”

Section: Resultsmentioning

confidence: 99%

Development of Photoluminescent and Photochromic Polyester Nanocomposite Reinforced with Electrospun Glass Nanofibers

2023

View full text Add to dashboard Cite

A polyester resin was strengthened with electrospun glass nanofibers to create long-lasting photochromic and photoluminescent products, such as smart windows and concrete, as well as anti-counterfeiting patterns. A transparent glass@polyester (GLS@PET) sheet was created by physically immobilizing lanthanide-doped aluminate (LA) nanoparticles (NPs). The spectral analysis using the CIE Lab and luminescence revealed that the transparent GLS@PET samples turned green under ultraviolet light and greenish-yellow in the dark. The detected photochromism can be quickly reversed in the photoluminescent GLS@PET hybrids at low concentrations of LANPs. Conversely, the GLS@PET substrates with the highest phosphor concentrations exhibited sustained luminosity with slow reversibility. Transmission electron microscopic analysis (TEM) and scanning electron microscopy (SEM) were utilized to examine the morphological features of lanthanide-doped aluminate nanoparticles (LANPs) and glass nanofibers to display diameters of 7–15 nm and 90–140 nm, respectively. SEM, energy-dispersive X-ray spectroscopy (EDXA), and X-ray fluorescence (XRF) were used to analyze the luminous GLS@PET substrates for their morphology and elemental composition. The glass nanofibers were reinforced into the polyester resin as a roughening agent to improve its mechanical properties. Scratch resistance was found to be significantly increased in the created photoluminescent GLS@PET substrates when compared with the LANPs-free substrate. When excited at 368 nm, the observed photoluminescence spectra showed an emission peak at 518 nm. The results demonstrated improved hydrophobicity and UV blocking properties in the luminescent colorless GLS@PET hybrids.

show abstract

“…In comparison to PNPs powder (519 nm), all emissive fingerprinted sheets emitted 517 nm, which is almost identical. Using an off‐white paper sheet as a backdrop for the photochromic effect, the fluorescent fingerprinted paper sheets exhibited an increase in the ability of the naked eye to recognize the color change to green (Al‐Nami et al, 2022). The fluorescent fingerprinted paper sheets showed photochromism to green underneath UV light, greenish‐yellow in a darkened box, and off‐white identical to FM‐0 under visible daylight (Figure 8).…”

Section: Resultsmentioning

confidence: 99%

“…Figure 9 shows a prominent UV absorbance band at 366 nm. Since the emission of Eu 2+ was identified at 517 nm, it was shown that Eu 3+ had completely exchanged to Eu 2+ (Al‐Nami et al, 2022; Mokhtar et al, 2021). The 4f 6 5D 1 ↔ 4f 7 transition of Eu 2+ is allocated to the emission spectra (El‐Newehy et al, 2022; Khattab et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Preparation of photoluminescent nanocomposite ink for detection and mapping of fingermarks

Snari

Pashameah

Alatawi

et al. 2022

Microscopy Res & Technique

Self Cite

View full text Add to dashboard Cite

Simple and efficient detection and mapping method based on a strong turn‐on fluorescent pigment was developed for fingerprint analysis. We present a phosphor powder characterized by strong emission which is useful to achieve better fingerprint detection on multicolored or photoluminescent surfaces, such as currency notes characterized by optically changeable inks and highly fluorescent positions, because it offers better contrast and reduce the difficulty of background interference. Novel photochromic ink was prepared to establish a fingerprinted colorless film onto cellulose documents with green emission for anticounterfeiting applications as illustrated by photoluminescence spectra. Inorganic/organic nanoscale composite ink was prepared from rare‐earth doped aluminate phosphor nanoparticles (PNPs; 27–49 nm) dispersed in a polyacrylic acid binding agent. PNPs were dispersed efficiently in polyacrylic acid to generate a colorless mark. The produced photochromic inks were spray‐coated onto off‐white paper sheets enclosing invisible fingermarks, and then exposed to thermofixation. Photochromic film was detected on paper surface presenting a transparent appearance under visible daylight and switchable to green under UV light. The CIE Lab parameters and photoluminescence spectra were studied under visible light and ultraviolet irradiation. The fingerprinted sheets showed fluorescence band at 517 nm upon excitation at 366 nm, showing a bathochromic shift and reversible photochromism without fatigue. The morphologies of pigment phosphor particles and fingerprinted sheets were inspected. The rheological properties of ink and mechanical behavior of the fingerprinted paper samples were explored. Highlights Novel smart ink with alkaline‐earth aluminate and polyacrylic acid was developed. Dual‐mode fluorescent photochromism was presented for latent fingerprint analysis. Off‐white fingerprinted films under daylight showed color change to green under UV. Fluorescence band monitored at 517 nm upon excitation at 366 nm. Fluorescent fingermark on paper sheets demonstrated good photostability.

show abstract

Preparation of photoluminescent and anticorrosive epoxy paints immobilized with nanoscale graphene from sugarcane bagasse agricultural waste

Cited by 14 publications

References 59 publications

Development of photoluminescent artificial nacre‐like nanocomposite from polyester resin and graphene oxide

Development of photoluminescent artificial nacre‐like nanocomposite from polyester resin and graphene oxide

Development of Photoluminescent and Photochromic Polyester Nanocomposite Reinforced with Electrospun Glass Nanofibers

Preparation of photoluminescent nanocomposite ink for detection and mapping of fingermarks

Contact Info

Product

Resources

About