CHEMICAL ENGINEERING JOURNAL
·
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
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2019
·Vol. 102
·期 12
·7491-7499
·
IF 3.094
Ziyu Liu,Guido Toci,Angela Pirri,Barbara Patrizi,Jinbang Li,Zewang Hu,Jiabei Wei,Hongming Pan,Tengfei Xie,Matteo Vannini,Jiang Li
In this article, 5 at.% Yb:Lu 2 O 3 transparent ceramics were fabricated by vacuum sintering combined with hot isostatic pressing (HIP) posttreatment using co-precipitated nano-powders. The influence of precipitant molar ratio, ammonium hydrogen carbonate, to metal ions (AHC/M 3+ , R value) on the properties of Yb:Lu 2 O 3 precursors and calcined powders was investigated systematically. It was found that the powders with different R value calcined at 1100°C for 4 hours were pure cubic Lu 2 O 3 but the morphologies of precursors and powders behaved differently. The opaque samples pre-sintered at 1500°C for 2 hours grew into transparent ceramics after HIP posttreatment at 1750°C for 1 hour. The final ceramic with R = 4.8 showed the best optical quality with the in-line transmittance of 79.7% at 1100 nm. The quasi-CW laser operation was performed at 1034 nm and 1080 nm with a maximum output power up to 8.15 W as well as a corresponding slope efficiency of 58.4%.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Xiaojian Zhang,Zhiqin Zhang,Yamin Feng,Honglei Yuan,Gaoliang Wang
Bi 3+ activated Ba 3 Lu 2 B 6 O 15 phosphors were synthesized by sintering at 910 °C for 24 h under air in a muffle furnace. The phase, luminescence properties and potential applications in LED devices were investigated. X-ray diffraction results indicate the successful doping of Bi 3+ ions in Ba 3 Lu 2 B 6 O 15 host. The diffuse reflectance and excitation spectra demonstrate the excitability on UV light. Upon the excitation at 365 nm, the Bi 3+ activated Ba 3 Lu 2 B 6 O 15 phosphors show narrowband blue emission with the peak at 417 nm. The highest emission intensity with the quantum yield of 85.7% and ΔE a value of 0.215 eV is generated by the Ba 3 Lu 1.90 Bi 0.10 B 6 O 15 phosphor. The light characteristics of the UV-pumped LED devices containing the Ba 3 Lu 1.90 Bi 0.10 B 6 O 15 phosphor demonstrate the potential application of Bi 3+ activated Ba 3 Lu 2 B 6 O 15 phosphors in the lighting field.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Quanzhang Sun,Ming Gong,Ji Wang,Lifeng Chen,Wenlong Li,Yuezhou Wei
ABSRACT To extract lutetium (Lu) from LiCl-KCl fused salt, the electrode reaction mechanisms of Lu on W and liquid Zn electrodes were systematically investigated using a series of electrochemical methods such as cycle voltammetry (CV), square wave voltammetry (SWV), reverse chronopotentiometry (RCP), etc. The diffusion coefficient and diffusion activation energy of Lu(III) in LiCl-KCl fused salt were measured by CV. The results of CV, SWV and open circuit chronopotentiometry (OCP) confirmed that seven Lu-Zn intermetallic compounds were formed when Lu was deposited on Zn film electrode. Kinetic data of Lu(III)/Lu on W and liquid Zn electrodes, i.e., exchange current density, charge transfer resistance and reaction activation energy, were determined and compared by linear polarization (LP) at 773-848 K. Furthermore, the thermodynamic date such as equilibrium potential and formation Gibbs free energy of Lu-Zn alloys were also calculated and analyzed according to the OCP. The results demonstrate that the liquid Zn electrode is conducive to extract Lu from LiCl-KCl fused salt. Thus, constant potential electrolysis (CPE) was conducted at -1.58 V for 9 h on liquid Zn cathode to extract Lu from fused salt. The electrolytic product was composed of Zn and LuZn12 phases checked by XRD and SEM-EDS. The extraction rate of Lu is reached up to 98.37% based on the concentration change of Lu(III) in fused salt, which confirmed the feasibility to extract Lu employing liquid Zn electrode.
研究领域:
冶金学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yitan Wang,Li Chen,Yongsheng Yan,Ji Chen,Jiangdong Dai,Xiaohui Dai
Adjacent rare earth separation has always been one of the hardest separation tasks around world. In this article, a task-specific ionic liquid Cyphos IL 104 embedded polymer inclusion membrane (PIM) was fabricated to realize the adsorption and separation of adjacent heavy rare earth elements Lutetium (III) and Ytterbium (III). Chemical composition of the PIM was verified by attenuated total reflectance Fourier transformed infrared spectroscopy and X-ray photoelectron spectroscopy. And results confirmed only P O and P–O groups participated in the formation of Rare Earth (III)-Cyphos IL 104 complex. A typical thumb-like asymmetric structure was observed by scanning electron microscopy. And the addition of Cyphos IL 104 promoted the hydrophilicity of the PIM as the water contact angle became smaller. Static adsorption and dynamic transport performances were studied in details to get the optimum separation condition. The permeability coefficients of Yb(III) and Lu(III) were 156 μm s −1 and 114.82 μm s −1 , respectively; And the initial membrane fluxes were 90.17 μm m −2 s −1 and 65.61 μm m −2 s −1 , respectively. The separation factor between Yb(III) and Lu(III) was calculated as 1.37 under the optimized transport condition. All these would provide promising developments of adjacent heavy rare earth separation with an efficient and practical membrane strategy.
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
SOLID STATE SCIENCES
·
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
·
2016
·Vol. 45
·期 6
·2974-2980
·
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
·
光学材料
·
发光材料
·
无机化学
·
纳米材料
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
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
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2021
·Vol. 50
·期 4
·1949-1954
·
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
·
光学
·
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
·
凝聚态物理
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Hongmin Cui,Jinsong Shi,Yanlin Liu,Nanfu Yan,Chao Zhang,Shengyong You,Guihua Chen
As the consumption of rare earth elements (REEs) for many clean energy and consumer electronic sectors continues to grow, recycling REEs is essential due to the limited resources and high economic importance of high-value rare earth (RE). Herein, we describe the development of a novel alkali fusion, acid leaching, and liquid–liquid extraction process for the separation of lutetium from (Lu, Y) 2 SiO 5 (LYSO) scrap using diglycolamide-based task-specific ionic liquids (DGA-TSILs). The comprehensive disintegration of LYSO through alkaline fusion is discussed and subsequently optimized parameters were employed to extract REEs from LYSO under low acidity conditions during hydrochloric acid leaching. Two DGA-TSILs were used for the extraction of Lu(III) and Y(III) from chloride system. McCabe-Thiele diagram was constructed to determine the number of stages needed for the separation of Lu(III) from LYSO leachate, and stripping of Lu(III) from the loaded organic phase was achieved with 0.01 mol/L HCl solution. These results provide a green alternative to conventional methods of strategically important REEs recycling from LYSO scrap.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
BIOCONJUGATE CHEMISTRY
·
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
·
分子影像学
·
核医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）