CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Hao Chen,Yucheng Liu,Xiaowen Zhou,Wenyi Zhang,Peihai Ju,Xiaoyu Zhong,Jiuyang Lin,Yinhua Wan,Xuewei Li
The lutetium has been known to be used in medical imaging materials, but its scarcity in the Earth’s crust makes it expensive. In this work, we present a process for efficient lutetium recovery from the lutetium-yttrium oxyorthosilicate crystals (LYSO) waste. The process involves preliminary mechanical activation, followed by rare earth extraction via acid leaching. The key factors for activation and leaching were studied and optimized. The mechanism of mechanical activation promoting rare earth leaching was revealed by employing the characterizations of morphology and crystal structure of LYSO. It was found that the mechanical activation process could destroy the crystal structure of LYSO waste, forming numerous amorphous phases and grain boundaries, which facilitated the breaking of existing bonds and mass transfer of acid. It was also discovered that the formation of silica gel during leaching impedes the leaching of rare earth, and low concentrations of hydrochloric acid, combined with stirring during acid leaching, could reduce the impact of silica gel. Ultimately, following a mechanical activation pretreatment at 300 rpm for 90 min, 98.7 % of lutetium could be leached after 60 min of acid leaching in 3 mol/L hydrochloric acid. This process addresses the problems associated with high energy consumption and excessive usage of acidic and alkaline reagents in conventional recycling techniques. Compared to conventional methods, the mechanical activation-acid leaching method has a minimum economic benefit improvement of 20.8 % in the process of recovery from LYSO waste. It offers an alternative and more energy-efficient and economical recycling route for waste scintillation crystals.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE SCIENCES
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2016
·
IF 2.041
Yinyan Li,Shiqing Xu
Uniform and well-defined Lu 2 O 3 and Lu 2 O 3 :Eu 3+ microarchitectures have been successfully synthesized via a green and facile ionic liquid-based hydrothermal method followed by a subsequent calcination process. Novel 3D micro-rodbundles and 1D microrods of Lu 2 O 3 and Lu 2 O 3 :Eu 3+ were controllably obtained through this method. X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy and photoluminescence spectra were used to characterize the micromaterials. The proposed formation mechanisms have been investigated on the basis of a series of SEM studies of the products obtained at different hydrothermal durations. The results indicated that hydrothermal temperature and the ionic liquid-tetrabutylammonium hydroxide were two key factors for the formation as well as the morphology control of the Lu 2 O 3 and Lu 2 O 3 :Eu 3+ microarchitectures.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2016
·Vol. 45
·期 6
·2974-2980
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IF 1.491
Zheng Yuhui,Hu Jing,Deng Surong,Gao Jinwei,Wang Qianming
High-purity LuVO 4 : Ln 3+ /Bi 3+ (Ln = Eu, Sm, Dy) phosphors with tetragonal zircon structures were successfully synthesized. The reactions have been carried out by multiple irradiations with very high efficiency. Transmission electron microscope images showed that the phosphors had rod-like structures with average lengths of about 200 nm. The host absorption edge of LuVO 4 : Ln 3+ /Bi 3+ (Ln = Eu, Sm) shifted to the longer wavelength side. Furthermore, the red emission of Eu 3+ ion and the orange emission of Sm 3+ ion are remarkably enhanced by encapsulating Bi 3+ in LuVO 4 system, whereas in the case of LuVO 4 : Dy 3+ /Bi 3+ , the host absorption and the yellow emission from dysprosium have been suppressed in the presence of Bi 3+ . These novel findings will facilitate their use in the display field.
研究领域:
材料科学
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光学材料
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发光材料
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无机化学
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纳米材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2015
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IF 2.999
Yuexin Wang,Yanhua Song,Xiuqing Zhou,Keyan Zheng,Ye Sheng,Pingchuan Ma,Bowen Zhang,Meiqi Chang,Haifeng Zou
Uniform Lu 2 (C 4 H 4 O 6 ) 3 ·6H 2 O cauliflower-like microspheres have been synthesized via a direct precipitation method at room temperature, without any templates and catalysts. The solvent-dependent morphological evolution and the formation mechanism of the Lu 2 (C 4 H 4 O 6 ) 3 ·6H 2 O cauliflower-like microspheres were investigated in detail. Furthermore, Eu 3+ /Tb 3+ -doped Lu 2 O 3 inherited their parents' morphology were obtained through a direct annealing process. The Lu 2 (C 4 H 4 O 6 ) 3 ·6H 2 O:Eu 3+ , Lu 2 O 3 :Eu 3+ exhibit strong red emission corresponding to the 5 D 0 - 7 F j transition of the Eu 3+ ions. The Lu 2 (C 4 H 4 O 6 ) 3 ·6H 2 O:Tb 3+ , Lu 2 O 3 :Tb 3+ exhibit strong green emission corresponding to the 5 D 4 - 7 F j transition of the Tb 3+ ions under UV light excitation. The samples may have potential applications in the fields, such as light-emitting phosphors, advanced flat panel displays, or biological labeling.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2021
·Vol. 50
·期 4
·1949-1954
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IF 1.938
Zhang Dunpu,Zhen Yue,Chang Qing,Zhang Hui
Highly crystalline β-NaLuF 4 :Ln 3+ microstructures were successfully prepared via a mixed NaCl-KCl flux cooling approach. The chemical reaction process and the formation mechanism have been carefully investigated by XRD, SEM, TEM and PL characterizations. Interestingly, as the reaction time is prolonged, the crystalline structure of NaLuF 4 changes from α-phase to β-phase, while the granule shape transfers from nanoparticles to solid microsheets then to porous microsheets. By altering the kinds of doped lanthanide ions, upconverting and downconverting luminescence with multi-colour outputs (red, green and blue) can be realized in β-NaLuF 4 :Ln 3+ (Ln = Yb, Er, Tm, Ce, Tb and Eu). This strategy is not only expected to meet the ever-increasing commercial demand, but also offers an alternative in synthesizing rare earth fluorides.
研究领域:
材料科学
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光学
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无机化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-9
·
IF 16.6
Xing Xiangzhuo,Wang Chao,Yu Linchao,Xu Jie,Zhang Chutong,Zhang Mengge,Huang Song,Zhang Xiaoran,Liu Yunxian,Yang Bingchao,Chen Xin,Zhang Yongsheng,Guo Jiangang,Shi Zhixiang,Ma Yanming,Chen Changfeng,Liu Xiaobing
The recent report of near-ambient superconductivity and associated color changes in pressurized nitrogen doped lutetium hydride has triggered worldwide interest and raised major questions about the nature and underlying physics of these latest claims. Here we report synthesis and characterization of high-purity nitrogen doped lutetium hydride LuH 2± x N y . We find that pressure conditions have notable effects on Lu-N and Lu-NH chemical bonding and the color changes likely stem from pressure-induced electron redistribution of nitrogen/vacancies and interaction with the LuH 2 framework. No superconducting transition is found in all the phases at temperatures 1.8-300 K and pressures 0-38 GPa. Instead, we identify a notable temperature-induced resistance anomaly of electronic origin in LuH 2± x N y , which is most pronounced in the pink phase and may have been erroneously interpreted as a sign of superconducting transition. This work establishes key benchmarks for nitrogen doped lutetium hydrides, allowing an in-depth understanding of its novel pressure-induced phase changes.
研究领域:
材料科学
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凝聚态物理
✓ 已验证
DOI
高影响因子
BIOCONJUGATE CHEMISTRY
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2025
·
IF 3.9
Jing Wang,Chengxue He,Rui Guo,Li Wen,Jinping Tao,Huimao Zhang,HaiFeng Huang,Hua Zhu,Zhi Yang,Xianteng Yang
Malignant glioma highly expresses carbonic anhydrase IX (CAIX). This study aimed to develop [177Lu]Lu-XYIMSR-01, a small-molecule therapeutic agent CAIX, to assess its potential for treating malignant glioma. [177Lu]Lu-XYIMSR-01 was synthesized by radiolabeling DOTA-XYIMSR-01 with 177Lu. In vitro assays were conducted to evaluate the affinity for U87MG tumor cells. The probe was injected via the tail vein into subcutaneous and orthotopic U87MG models for micro-SPECT/CT imaging. The survival rates of tumor-bearing mice were assessed after [177Lu]Lu-XYIMSR-01 injection by intratumoral in orthotopic models, including untreated controls and those treated with Temozolomide or combination therapy. After purification, the radiochemical yield of [177Lu]Lu-XYIMSR-01 was 86.47 ± 2.42%, with a radiochemical purity (RCP) of 99%. Its cell uptake in U87MG cells was 3.70 ± 0.57 ‰ AD/105 cells, significantly higher than that in HCT116 cells (0.68 ± 0.16 ‰ AD/105 cells, P = 0.001). In the biodistribution study, [177Lu]Lu-XYIMSR-01 uptake in U87MG tumors was 6.19 ± 1.37%ID/g, with a tumor/muscle ratio of 20.14 ± 3.24. In the orthotopic glioma model, local injection combined with Temozolomide significantly improved survival and inhibited tumor growth. The results indicate that [177Lu]Lu-XYIMSR-01 is a promising therapeutic molecular probe for targeting CAIX, and its combination with Temozolomide significantly enhances treatment outcomes for malignant glioma.
研究领域:
肿瘤学
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分子影像学
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核医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RARE EARTHS
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2024
·
IF 5.2
Feng Zhang,Dazhao Wang,Guanxin Du,Hongwei Li,Dianhao Hou,Yankun Qi,Shichao Lv,Shifeng Zhou
The scintillating photonic glass has the great potential for medicine imaging, nuclear physics, high-energy physics, and national defense. However, the development of the candidate with the high density remains a significant challenge. Herein, the superdense scintillating glasses derived from the Ce 3+ -activated Lu 2 O 3 -SiO 2 binary system were successfully fabricated by the strategy of contactless aerodynamic levitation heating under the N 2 atmosphere. These glasses are colorless, optical homogeneous, and exhibit superdense density from 6.59 to 7.15 g/cm 3 , representing the highest density among the fast decay glass systems. The materials present excellent radiation-blocking ability, suitable emission wavelength, and fast response, indicating the promise for fast-event X-ray detection. The micro radiation probe was fabricated by connecting the scintillating glass and the optical fiber. The practical application in remote radiation detection is demonstrated and it exhibits excellent linear response and high signal-to-noise ratio. The results confirm that the fabricated superdense scintillating glass is promising for application in the field of high-energy radiation detection.
研究领域:
材料科学
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核物理学
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医学成像
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2024
·
IF 5.2
Jiaqi He,Jiao Han,Menghong Li,Mingwei Li,Ju Zhou,Ping Yang,Shiqi Li,Wenhan Qi,Zehui Lin,Gang Wang,Yiming Zeng,Li Chen
A series of Sr 1‒1.5 x Lu x TiO 3 ( x = 0, 0.005, 0.01, 0.015, and 0.02) ceramics was sintered under an air atmosphere through the solid-state reaction method. The results show that doping with Lu 3+ considerably enhances material permittivity. The ceramic with x = 0.01 exhibits a colossal permittivity (CP) of ∼101000 with a tan δ of ∼0.16 at a frequency of 1 kHz, demonstrating enhanced stability over a wide temperature (30 to 300 °C) and frequency (10 2 to 10 6 Hz) range. Based on the analysis of dielectric relaxation, X-ray photoelectron spectroscopy (XPS), and the universal dielectric response law, the CP effect is primarily due to the formation of defect dipoles, which are correlated with the presence of oxygen vacancies, such as Ti 3+ Ti 3+ , , Ti 3+ , and Ti 3+ . These defect dipoles serve to pin electrons, limiting long-range transitions, and enhancing local polarization. Doping with Lu 3+ also induces a secondary Lu 2 Ti 2 O 7 phase, which are characterized by X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS). The results generated in this study can inform the development and application of new CP materials based on SrTiO 3 .
研究领域:
材料科学
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固态化学
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电子材料
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Huan Wang,Cen Shi,Liangliang Yin,Yanqin Ji
To remove lutetium from wastewater, superparamagnetic Fe 3 O 4 @SiO 2 –HOPO nanoparticles were successfully synthesized, containing approximately 460 μmol·g −1 of 3,2-HOPO. The material demonstrated high stability in 0.1 mol·L −1 HNO 3 and retained 97 % of its adsorption capacity after five cycles. The nanoparticles showed strong selectivity for lutetium, with minimal interference from coexisting ions in different matrices. This selective adsorption was primarily due to monodentate or multidentate chelation of 3,2-HOPO on the particle surface with lutetium. Adsorption equilibrium was achieved within 15 min, with a maximum capacity of 29 mg·g −1 , highlighting its potential for large-scale wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhongrui Liu,Fan Yang,Zhongxuan Sun,Qingshan Chi,Yazhu Li
This research reports the first study of selective leaching of ytterbium-lutetium oxides mixture with hydrophobic deep eutectic solvents (DESs), and high-efficiency and simple-prepared were used to separate and beneficiate lutetium. With hydrophobic DESs, which were formed with hydrophobic salicylic acid (SA) or 3,5-dinitrosalicylic acid (DNS) as the hydrogen bond donor (HBD) and hydrophobic tri-n-octyl phosphine oxide (TOPO) as the hydrogen bond acceptor (HBA), powdered eutectic mixtures of ytterbium-lutetium oxides were leached. The separation factor of ytterbium-lutetium was concluded to reached 2.11 with a solid-liquid (S/L) ratio of 1/50 g/ml, a temperature of 90 °C and a 4 h leaching time, and the experimental conditions, such as the S/L ratio, temperature and reaction time, were explored. The formation of intermolecular hydrogen bonds between the HBD and HBA was revealed through multiple methods, such as IR (disappearance of OH characteristic peaks), 1 H NMR (formation of sharp peaks not present for intramolecular hydrogen bonds) and 31 P NMR (shift of P = O peaks to higher fields). The lattice energies of the intermolecular hydrogen bonds and the solid oxide lattice energies, which were calculated with Gaussian 16 software (0.87 eV for SA/TOPO = 1:1 and 0.94 eV for DNA/TOPO = 1:1) and the Born–Haber cycle (12957.56 kJ/Mol for Yb 2 O 3 and 12993.59 kJ/Mol for Lu 2 O 3 ), provided a theoretical illustration of preferential Yb/Lu dissolution leading to separation. The stripping, regeneration and recycling capabilities of the DESs were investigated with stripping and recirculation experiments. Based on these results, the new DES as the leaching agent to separation of ytterbium lutetium oxide is identified as a new efficient mothed with industrialization potential.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2020
·
IF 2.779
Ruofeng Wang,Ying Shi,Jianjun Xie,Fang Lei,Lingcong Fan,Ding Zhou
The thulium and holmium co-doped lutetium aluminum garnet (Tm,Ho:LuAG) ceramics were fabricated by vacuum sintering at 1760 °C for 10 h. The raw powders free of sintering aids were synthesized by co-precipitation method. The phase composition, crystalline behaviors, and morphology of the powders calcined at different temperatures were studied by scanning and transmission electron microscopy . Well-dispersed Tm,Ho:LuAG powders with the primary particle size of 80 nm were obtained by calcinations at 1200 °C for 2 h in the muffle furnace. The influence of agglomeration state of starting powder on densification and microstructure of Tm,Ho:LuAG ceramic was explored. The in-line transmittance of Tm,Ho:LuAG ceramic with the thickness of 1 mm reached 83.0% and the corresponding optical attenuation coefficient was about 0.013 mm −1 at 2500 nm. The average grain size of the Tm,Ho:LuAG ceramic was about 1.7 μm. It is promising that the Tm,Ho:LuAG optical ceramic would be a suitable candidate to realize lasers output at 2.1 μm.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）