Masking Phosphate with Rare-Earth Elements Enables Selective Detection
We also demonstrated that the rare-earth masking strategy is a versatile method to suppress the interference of Dpa-Zn II complex-based chemosensor by Pi and allow for specific arsenate detection ...
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Rare-earth Activated Glass and Glass-Ceramic for Neutron Detection
Neutron detection scintillators based on rare-earth activated transparent glass and glass-ceramics are reported. Ce 3+ doped gadolinium halides in 6 LiF modified aluminosilicate glass matrices were synthesized by a melt-quench method followed by annealing. Their optical properties and alpha, neutron scintillation performance were …
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Rare earth elements: A review of applications
Rare earth elements (REE) include the lanthanide series elements (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) plus Sc and Y. Currently these metals have become very critical to several modern technologies ranging from cell phones and …
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The Potential of Reflectance and Laser Induced …
New energy, transport, computer and telecommunication technologies require an increasing supply of rare earth elements (REEs). As a consequence, adequate and robust detection methods become essential for the exploration and discovery of new deposits, the improved characterization of existing deposits and the future recycling of today's high-tech …
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Sensitive determination of rare earth elements in liquid …
A LIBS method for analyzing rare earth elements in liquid samples was developed and tested.. Adoption of groove constraint liquid–solid conversion preprocessing to improve signal stability and reproducibility. • Spatial confinement assisted surface-enhanced laser-induced breakdown spectroscopy (SC-SE-LIBS) was used in the study …
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Cerium-doped mixed-alkali rare-earth double-phosphate …
Our previous work [3], [4] demonstrated the ability to synthesize transparent, highly luminescent, fast scintillators for X-ray and gamma-ray detection. Previously synthesized cerium-activated mixed-alkali rare-earth lutetium-double-phosphate scintillators have been characterized using photoluminescence (PL) techniques, alpha particle …
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LIBS Detection of Rare‐Earth Elements and …
Summary. This chapter discusses rare-earth (RE) elements, their importance, and laser-induced breakdown spectroscopy (LIBS) analysis. It provides …
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Special Issue: Rare earth luminescent materials
Trivalent rare earth ions (Ln 3+) have the unique electronic configurations [Xe]4f n ( n = 0–14) and numerous energy levels, which endow rare earth luminescent …
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Minerals | Free Full-Text | Detection of Rare Earth …
Detection of Rare Earth Elements in Minerals and Soils by Laser-Induced Breakdown Spectroscopy (LIBS) Using Interval PLS. by. Nina Rethfeldt. 1, Pia Brinkmann. 1, Daniel Riebe. 1, Toralf Beitz. 1,*, …
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Minerals | Free Full-Text | Detection of Rare Earth …
The numerous applications of rare earth elements (REE) has lead to a growing global demand and to the search for new REE deposits. One promising technique for exploration of these deposits is laser …
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Identification of rare earth-containing wastes and detection of rare
To develop an effective recovery process of rare earth metals from Dy containing Nd2Fe14B magnets (NdFeB-Dy), the release behavior of rare earth metals (Nd and Dy) and coexisting elements (Fe, B ...
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Rare-Earth hydroxide nanosheets based ratio fluorescence …
As a result, Ln 3+ - sensitized fluorescence method has been a useful tool for DPA detection. In recent years, layered rare-earth hydroxide (LRH), has been widely investigated and applied in various fields such as catalysts, adsorbents and luminescence [26], [27], [28]. Delamination is one kind of the important properties of LRH.
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Functionalization of 1D In2O3 nanotubes with abundant
For gas sensing, rare-earth doping can improve the response and selectivity of In 2 O 3-based gas sensors in the detection of ethanol. In particular, among all tested RE-doped In 2 O 3 NTs, the Tb-doped In 2 O 3 gas sensor exhibited the highest response to various gases and especially to ethanol.
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Rare-earth elements detection using diatomic molecular …
The detection of Rare-Earth-Elements by LIBS by their atomic and ionic emission in many cases is difficult due to significant spectral interferences from other members of this group and ...
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Research progress on rare earth up-conversion and near …
Rare earth up-conversion materials have rich emissions in different color regions, which is instrumental to fluorescence detection under different physical and chemical conditions. Furthermore, they still maintain good chemical stability under most acid, alkali conditions, and wide temperature range without pollution.
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Development of a Rare Earth Nanoprobe Enables In Vivo …
Rare earth-based nanomaterials especially (vs. existing fluorescence probes) have distinct physical and chemical properties, including extensive spectral tunable range, low photobleaching, low cytotoxicity, and narrow emission bandwidths . Such properties are of probable use for highly sensitive, noninvasive detection of SLN …
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Paper-based LRET sensor for the detection of total heavy rare-earth …
Rare-earth ions detection in water samples. Aliquots (3 μL) of tap water samples with total heavy rare-earth ions (Equal ratios of Gd 3+, Tb 3+, and Dy 3+ ions) at different concentrations (10, 15, and 50 μmol L −1) were dropped freely …
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Rare-earth based materials: an effective toolbox for brain …
Fluorescence imaging. Fluorescence imaging possesses the advantages of non-radiotoxicity, non-invasive, rapid detection, high sensitivity and superior imaging resolution 50,51,52.Over the past few ...
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Detection of REEs with lightweight UAV-based …
Rare earth elements (REEs) supply is important to ensure the energy transition, e-mobility and ultimately to achieve the sustainable development goals of the …
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Rare-earth-doped upconversion nanocrystals embedded mesoporous silica
Simultaneous detection of multiple types of microRNA (miRNA) is of great significance in early cancer diagnosis. In this study, rare-earth-doped CaF 2 upconversion nanocrystals (CaF 2: RE 3+, namely Ho 3+ or Tm 3+ and Yb 3+) are formed within the mesopores of silica nanoparticles (CaF 2: RE 3+ @MSN), in an in-situ manner, by …
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Portable Mining & Exploration Solutions
Low detection limits allow you to measure concentrations at or below the averages naturally found in the earth's crust – detecting even the most subtle geochemical anomalies. ... Rare Earth Elements (REE) are defined as the 15 lanthanides plus scandium (Sc) and yttrium (Y). Due to their unique optical and magnetic properties, REEs are ...
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Development of a Rare Earth Nanoprobe Enables In Vivo …
Detection of SLN metastasis largely hinges on examination of frozen sections or paraffin-embedded tissues post-SLN biopsy. To improve detection of SLN metastasis, we developed a second near-infrared (NIR-II) in vivo fluorescence imaging system, pairing erbium-based rare-earth nanoparticles (ErNP) with bright down …
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Fluorescence-Recovered Wearable Hydrogel Patch for In Vitro Detection …
Rare-earth nanoparticles (RENP … The physiological state of the human body can be indicated by analyzing the composition of sweat. In this research, a fluorescence-recovered wearable hydrogel patch has been designed and realized which can noninvasively monitor the glucose concentration in human sweat.
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What Are Rare Earth Metals? What Are They Used For?
Rare earths are also used as a refiner in gas used to fuel internal combustion engines. Rare earth magnets, like that of Neodymium-iron-boron, are used in sensors, and even ferrite magnets contain small amounts of rare earths and minor metals like Lanthanum and Cobalt to improve magnet performance by as much as 25%.
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Materials for the photoluminescent sensing of rare earth …
Rare earth elements (REEs) are widely used in high-performance technologies including wind turbine magnets, electric vehicle batteries, lighting displays, circuitry, and national defense systems. ... for REE luminescence-based detection, including organic compounds, biomolecules, polymers, metal complexes, nanoparticles, and metal–organic ...
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New Sensor Can Detect Valuable Rare Earth Element in
A new luminescent sensor can detect terbium, a valuable rare earth element, from complex environmental samples like acid mine waste. The sensor, developed by researchers at Penn State, takes advantage of a protein that very specifically binds to rare earth elements and could be harnessed to help develop a domestic supply of these …
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Materials for the photoluminescent sensing of rare …
A general overview of REE optoelectronic properties and luminescent sensing protocols is first presented, followed by analyses of material …
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Simple and efficient method for detection of traces of rare earth
A simple and efficient method for the detection of traces of rare earth elements in minerals by Raman spectroscopy was proposed in ref. [36]. It has a lower detection limits for the rare earth ...
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Double-Emission Ratiometric Fluorescent …
In this paper, ZnS QDs are doped with the rare-earth element Ce to form a low-toxicity double-emission ratiometric fluorescent sensor, ZnS:Ce, for Hg 2+ detection. The results of transmission electron microscopy (TEM), X …
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Sensitive determination of rare earth elements in liquid …
1. Introduction. Rare earth elements (REEs), known as modern industrial vitamins, are irreplaceable resources for the development of modern industry and advanced technology, which are widely used in various fields, such as metallurgy, catalysis, electronics, chemical industry and green energy [1].In nature, REEs are rather dispersed …
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