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A-G) Comparison performance of LFP sweat pores by different labeling agents: (A) sky blue WBP 55G, (B) green BP 40G, (C) commercial ZnO powder, (D) Rhodamine 6G with day light, (E) Eu(III)-CPLx and (F) Fluorescent Eu(III)-CPLx/Dex composite under the UV light irradiation at 365 nm, (G) Calculate summarizing sweat pore.
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A europium salt-Na[Eu(5,5′-DMBP)(phen)3].Cl3 (Eu(III)-CPLx) was prepared by using various precursors such as 5,5′-Dimethyl-2,2′-bipyridyl (5, 5′-DMBP), 1,10-phenanthroline (phen) and europium chloride hexahydrate (EuCl3·6H2O) by a complexation method. The red emission fluorescent Na[Eu(5,5′-DMBP)(phen)3].Cl3/D-Dextrose (Eu(III)-CPLx/D-Dex) composit...
Citations
... In other words, 90 Y can be a radiopharmaceutical drug, making it relevant to study yttrium adsorption/ desorption cycles and their separation from matrix elements [4]. Yttrium studies are important for nuclear forensics, as 90 Y is a part of the 90 Sr-90 Zr decay chain [5][6][7]. In addition, the development of artificial intelligence (AI) necessitates the creation of recovery cycles for the production-use of elements of the YREE group, which also includes yttrium. ...
The adsorption of yttrium cations from an aqueous solution of YCl3 by sodium-modified titanium dioxide (Na-TiO2) was investigated. The Na-TiO2 was obtained by impregnating Na+ cations into the surface layer of TiO2 nanoparticles. The synthesis of nanoparticle TiO2 was performed by a liquid-phase sol-gel method, using the aqua complex of [Ti(OH2)6]3+‧3Cl- as a precursor. Nanoheterostructured Na-TiO2 is an anatase modification of TiO2. The amount of incorporated sodium cations on the TiO2 surface is about 6%. The surface area of Na-TiO2 is 239 m2‧g-1; the volume of mesopores is 0.098 cm3‧g-1; that of micropores is 0.054 cm3‧g-1. Yttrium ion adsorption was investigated under batch conditions. Complexometric titration and mas-spectrometric analysis determined the initial and equilibrium concentration of yttrium. The radiation resistance of Na-TiO2 to the influence of beta irradiation was investigated as well. For this purpose, the radiation of β--particles of the 90Sr-90Y source “Sirius” was used. The flux of β- - particles was 2.1‧108 electrons/sm2‧s; the maximal energy of incident electrons was 2.28 MeV. It was shown that the investigated adsorbent has a high adsorption capacity toward yttrium cations. The maximum adsorption is about 259 mg/g. The adsorption kinetic is fit well with the kinetic model based on the pseudo-second-order equation. The equilibrium adsorption of yttrium cations is described by Freundlich's theory with high reliability. The adsorbent is resistant to the influence of β- - irradiation. This is manifested in the invariance of its adsorption capacity toward yttrium cations after irradiation. Na-TiO2 is a promising material for the adsorption of yttrium and Rare Earth elements and can be used as the basis for the 90Y isotopic generator.
... In other words, 90 Y can be a radiopharmaceutical drug, making it relevant to study yttrium adsorption/ desorption cycles and their separation from matrix elements [4]. Yttrium studies are important for nuclear forensics, as 90 Y is a part of the 90 Sr-90 Zr decay chain [5][6][7]. In addition, the development of artificial intelligence (AI) necessitates the creation of recovery cycles for the production-use of elements of the YREE group, which also includes yttrium. ...
... Preliminary/Pilot studies -Several compounds were presented as new dusting powders: AIE-active composites or molecules [277][278][279][280][281], algal biomass [282], anti-perovskite phosphors [283], azo-dyes [284], β-cyclodextrin-berberine complexes [285], benzazole derivatives [286], bisamide analogues [287], cadmium-doped silica microspheres [288], chitosan-tripolyphosphate-lysine conjugates [289], coumarin-pyridone conjugates [290], crushed eggshells and clamshells [291], crushed gambir [292], curcumin analogues [293], doped montmorillonite [278,294,295], doped starch microspheres [296][297][298], europium-dextrose composites [299], iron oxide/zinc sulphide hybrid [300], metal-organic frameworks [301], organic NIR emitters [302,303], perylenetetracarboxylate compounds [304], phenylthiazoles [305], phosphor-cellulose hybrids [306], pyrazoles [307], pyrene-tagged imidazolium salts [308], pyridine and pyrimidine derivatives [309,310], rare-earth-doped phosphors [311][312][313][314][315][316][317][318][319], reduced graphene oxides [320], resveratrol powder [321], rhodamine B-doped diatomaceous earth [322], Schiff base complexes [323][324][325], talcum powder [326], triazine-based phosphors [327]. Two papers proposed alternatives to the use of a brush to apply powder: cabinet equipped with fans [328] and low-pressure sandblaster combined with fluorescent starch powder [329]. ...
... For the study, three dyes, [4-phenyl-2,6-bis(2-pyridyl)pyridine]tris [4,4,4-trifluoro-1-(4-nitrophenyl)butane-1, 3-dione]europium(III) (Eu1), 7-diethylamino-4-methylcoumarin (Coumarin 1), and B-1 4,4-difluoro1,3,5,7,8-pentamethyl-4-bora-3a,4adiaza-s-indecene (BODIPY), were investigated. The addition of these dyes was dictated by the fact that these dyes exhibit strong fluorescence [48][49][50] and safety in application [51][52][53]. These dyes are widely used in biology, e.g., BODIPY is applied in biochemical labelling [54] and europium complex and coumarin are employed in live cell imaging applications [55,56]. ...
Three-dimensional printing in SLA (stereolithography) and DLP (digital light processing) technologies has recently been experiencing a period of extremely rapid development. This is due to the fact that researchers recognise the many advantages of 3D printing, such as the high resolution and speed of the modelling and printing processes. However, there is still a search for new resin formulations dedicated to specific 3D printers allowing for high-resolution prints. Therefore, in the following paper, the effects of dyes such as BODIPY, europium complex, and Coumarin 1 added to light-cured compositions polymerised according to the radical mechanism on the photopolymerisation process speed, polymerisation shrinkage, and the final properties of the printouts were investigated. The kinetics of the photopolymerisation of light-cured materials using real-time FT-IR methods, as well as printouts that tangibly demonstrate the potential application of 3D printing technology in Industry 4.0, were examined. These studies showed that the addition of dyes has an effect on obtaining fluorescent prints with good resolution.
... The fluorescent dust is one of the materials being studied for the detection of latent fingerprints 10 . Due to the fluorescence of the material, the fingerprint is cleared and improving the proving procedure 11 However, various research studies involving the synthesis of fluorescent dust remain limited in many areas, such as the complexity of synthesis 11 . Toxicity of raw materials and dust powder with high price 12,13 for that reason, it hinders its practical use. ...
... The fluorescent dust is one of the materials being studied for the detection of latent fingerprints 10 . Due to the fluorescence of the material, the fingerprint is cleared and improving the proving procedure 11 However, various research studies involving the synthesis of fluorescent dust remain limited in many areas, such as the complexity of synthesis 11 . Toxicity of raw materials and dust powder with high price 12,13 for that reason, it hinders its practical use. ...
This research was to study the preparation of fluorescent dust powder to enhance the detection of ultra-bright latent fingerprints using natural plant extract associated with adsorption on silica gel particles by a simple and cheap method environmentally friendly. To study the physical and chemical properties of the fluorescent powder, various factors affecting the latent fingerprints detection including different surface characteristics, temperature, time, and overlapping passive fingerprints were investigated. From the results, it was found that the fingerprints on the surface of different materials could be performed, and gave good inspection trace,which can be seen with naked eye and appear brightly under UV light at a wavelength of 366 nm. For the persistence study of the latent fingerprints, it was also found that when kept it in a dark place at room temperature for 30 days, the fingerprints were still visible to the naked eye and glow clearly under UV light.In addition, the overlapping fingerprints can be clearly identified. Therefore, the study of the fluorescent silica gel dust powder demonstrates good performance,and it is a potential use to detect latent fingerprints as a witness in forensic processes.
Activated trivalent lanthanide (Eu³⁺) inorganic nanoparticles were regarded as the best possible alternative to conventional molecular bio probes and highly appropriate for use as sensitive time-resolved PL bio probes for bio-detection. Because of their strong photochemical stability, unique crisp emission lines, and high quantum efficiencies, rare-earth-based nanomaterials are the most utilized luminous materials. Furthermore, the coupling of vibrational modes of other molecules over the surface of the rare earth nanoparticles and other surface imperfections causes emission quenching. One potential strategy for preventing or minimizing these effects is to use a passivation agent that interacts with the surface of the nanoparticles. This study focuses on the passivation of tri-octyl phosphine oxide (TOPO) with europium oxide to form in-situ hydrophobic TOPO shell europium oxide nanoparticles for improving the physical, chemical, and optical properties of Eu³⁺ ions. The Eu:TOPO ratio of the nanoparticle was optimized for effective photoluminescence and particle crystallinity by photoluminescence spectroscopy and XRD analysis. The controlled size and shape of the material were analyzed by FESEM and EDS studies. Further, the XPS, Raman spectroscopy, and ¹H-NMR studies examined the incorporation of TOPO with europium oxide nanoparticles. The optical properties of the TOPO-capped europium oxide nanoparticles were evaluated by UV-Vis DRS and time-resolved fluorescence spectroscopy. Thus, this study is based on the efficiency of varied TOPO capping ratios with synthesized europium oxide nanoparticles in generating a size-regulated, highly stable, and effective luminous material with a higher quantum yield than europium oxide.
This work highlights a novel method for the synthesis of carbon nanosheets coated on zirconium oxide nanoplate (CNS/ZrO2NPs) nanocomposite that is used as an adsorbent for Zn2+ ions removal from water. CNS/ZrO2NPs nanocomposite was prepared using CNS and ZrO2NPs by a hydrothermal method. This nanocomposite proved to be a good adsorbent for Zn2+ ion uptake at maximum pH of 8 and dosage of 20 mg. The Temkin isotherm model represented the adsorption process followed by the Langmuir isotherm with a maximum adsorption capacity of 606.06 mg g−1, above other adsorbents that have been reported for the removal of zinc ions. The adsorption kinetic process was best described by the pseudo-second-order kinetics, and it was found that the adsorption followed a chemisorption process. The thermodynamic parameters, such as enthalpy (ΔH), Gibbs free energy (ΔG), and entropy (ΔS), revealed that the adsorption was exothermic, spontaneous, and not random during the process. This metal-loaded adsorbent Zn2+-CNS/ZrO2NPs nanocomposite furthermore was reused in latent fingerprint detection and did demonstrate good selectivity and sensitivity on different surfaces by two donors. Therefore, Zn2+-CNS/ZrO2NPs nanocomposite may be reutilized as a good fingerprint marking agent in latent fingerprint (LFP) identification to circumvent secondary environmental pollution by the release of a spent adsorbent.
