JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Huaixin Hao,Qiang Zheng,Yanli Zhang,Qiange He,Xiaogui Feng,Zhipeng Wang,Jing Chen
The implementation of actinide (An) and lanthanide (Ln) group separation is one of the most critical tasks for the GANEX process to adapt nuclear fuel cycle in the Generation IV nuclear energy system. In this work, we proposed a biphasic cooperative extraction system to fulfill this aim, achieving selective extraction of hexavalent An to the organic phase by a hydrophobic extractant, N,N -di-(2-ethylhexyl)butylamide (D2EHBA), while masking trivalent or tetravalent Ln in the aqueous phase by a hydrophilic ligand, N,N,N’,N’ -tetraethyldiglycolamide (TEDGA). Efficient group separation of actinides from lanthanides was achieved with remarkable single-stage An/Ln separation factors over 10 2 . Moreover, the mechanism of An(VI)/Ln(III/IV) selectivity was analyzed by UV–Vis, FT-IR and MALDI-TOF-MS spectroscopic analyses, indicating more hydrophobic nature of An(VI)-D2EHBA complex than Ln(III/IV)-D2EHBA complex as well as much stronger masking effect of Ln(III/IV) than An(VI) by TEDGA contributing striking An/Ln separation.
研究领域:
核化学
·
放射化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jiyuan Guo,Yihang Li,Bingbing Bao,Zishan Zhang,Rong Zhang,Hui Dan,Yi Ding
Developing new matrices capable of simultaneous immobilization of lanthanides and actinides are challenging. Herein, this paper reported the ZrSiO 4 -based borosilicate glass-ceramics with excellent immobilization capabilities of lanthanides and actinides. The phase evolution and microstructure transformation affected by the (Nd, Ce)-co-doping content were investigated systematically. The results indicated that the solubility limits of Nd and Ce in the obtained glass-ceramics decreased with increasing temperature, which were up to 18, 16 and 10 at% at 1400 °C, 1450 °C and 1500 °C, respectively. The formation rate of ZrSiO 4 increased with the increase of the (Nd, Ce)-co-doping content and temperature, which reached the highest value of 96.43 wt% with Nd and Ce content of 10 at% at 1500 °C. The densification of the obtained glass-ceramics also increased with the increase of the content of Nd and Ce. In addition, it was found that the immobilization mechanism of the resulting glass-ceramics was the synergistic immobilization effect of the ceramic crystal and glass network. This work indicated that the ZrSiO 4 -based borosilicate glass-ceramics might be promising matrices for immobilizing high-level radioactive wastes containing lanthanides and actinides.
研究领域:
材料科学
·
核废料管理
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Yaoming Deng,Tianxing Kang,Zhen Ma,Xinxin Tan,Xiaona Song,Zheng Wang,Peipei Pang,Dong Shu,Xiaoxi Zuo,Junmin Nan
Under the abusive conditions, it is demonstrated that the thermal stability of LiCoO 2 and the safety of LiCoO 2 /graphite batteries are improved by doping and coating Al and Ti elements into the bulk structure and surface of LiCoO 2 . The trickle charge and the differential scanning calorimeter (DSC) results show that after coating Al and Ti oxides on the doped LiCoO 2 with 2000 ppm Al, the exothermic peak shifts to a higher temperature and the exotherm decreases, resulting in the increase of the thermal stability of LiCoO 2 . In addition, compared to the LiCoO 2 without Al doping, it is also indicated that the thermal stability of LiCoO 2 can be enhanced by doping Al, the exothermic peak of the LiCoO 2 with Al doping amount of 10000 ppm is up to 250 °C. Under the abusive testing conditions including thermal shock and overcharge, the safety evaluation results of pouch polymer LiCoO 2 /graphite batteries are in good agreement with the trickle charge and DSC results. These results reveal that the thermal stability of LiCoO 2 can be used as an indicator to evaluate the safety characteristics of LiCoO 2 /graphite batteries, and especially the introduction of Al and Ti into LiCoO 2 can effectively improve the safety of LiCoO 2 /graphite batteries under the abusive conditions.
研究领域:
材料科学
·
电池安全
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Guiquan Liu,Shiyu Li,Rumisa Baikeri,Guorong Wang,Zhiliang Jin
Metal-organic skeleton (MOF) with adjustable pore skeleton and finely reaction sites has been widely accepted in the application of high-performance supercapacitors. Here, the Se-Co-MOF-1 nano-particles obtained by modified doped Se element to Co-MOF and the CoV 3 -MOF nano-sheets obtained by in-situ doped V element in Co-MOF. As a result, Se-Co-MOF-1 and CoV 3 -MOF electrode materials have more electrochemical reactivity, better conductivity and better stability. At a certain current density, Se-Co-MOF-1 and CoV 3 -MOF electrode materials have better mass-specific capacitance and better rate performance than Co-MOF. Furthermore, the Se-Co-MOF-1//AC ASC and CoV 3 -MOF//AC ASC are also assembled, which show relatively excellent power density and energy density compared to similar work reported. The Se-Co-MOF-1//AC ASC and CoV 3 -MOF//AC ASC after 10,000 cycles, their mass-specific capacitance retention rate are still 70.00 %, which further shows the reliable stability of Se-Co-MOF-1 and CoV 3 -MOF electrode materials. This result proves that the synthetic schemes of MOF nano-sheets/nano-particles can be selected as the source of the strategy for preparing excellent electrode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xilin Gao,Anting Ding,Yuxin Li,Chuanying Liu,Chengliang Xiao
Efficient utilization of uranium resources and minimization of nuclear waste are critical challenges for the sustainable development of nuclear energy. The separation of actinides (An) from lanthanides (Ln) is essential to reduce the impact of neutron poisons and enhance the efficiency of Partitioning & Transmutation (P&T) processes. In this study, we propose the use of a concentrated AlCl 3 solution as a selective leaching agent to separate Ln from An in spent nuclear fuel (SNF). At a mass ratio of 1:15, the AlCl 3 solution effectively dissolves nearly 100 % of lanthanide oxides from simulated SNF at 75 °C, while the coexisting actinide oxides remain largely insoluble. The high separation factors between Ln 2 O 3 and AnO 2 (average of 1630 for Ln/U and 490 for Ln/Th) provide a novel and efficient approach for the selective separation of lanthanides from SNF. The lanthanides are subsequently recovered through oxalic acid precipitation and calcination to produce Ln 2 O 3 . Based on our characterization results, the primary driving force for the dissolution of Ln 2 O 3 is the acidity of the H 2 O-AlCl 3 system, with the lattice energies of oxides identified as the key factor affecting the differential dissolution of Ln(III) and U/Th with higher valent under identical conditions. This selective dissolution and separation process using AlCl 3 solution presents a highly efficient method for the removal of lanthanides from SNF and improves the utilization of nuclear fission products. With its mild operating conditions and reduced environmental impact, this method offers a promising approach for the recovery of rare earth elements from nuclear waste and other secondary resources.
研究领域:
核化学与放射化学
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环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2025
·
IF 10.3
Yarui Li,Huangjie Lu,Yingzhe Du,Jie Qiu,Peng Lin,Jian Lin
Partitioning of actinides from lanthanides is pivotal for advancing nuclear waste management and sustaining nuclear energy development, yet it remains a formidable challenge due to the intricate chemical behaviors of these f-block elements. In this study, we introduce 3,6-di-2-pyridyl-1,2,4,5-tetrazine (L1), whose hydrolysis product of pyridine-2-carbox-aldehyde (pyridine-2-carbonyl)-hydrazone (L2) can fractionally crystallize U(VI) ions over Ln(III) cations with high selectivity and efficiency. Through hydrolysis-induced C–N bond cleavage, L2 acts as a tetradentate ligand, coordinating with two UO 2 2+ ions in a planar arrangement to form a zero-dimensional cluster, [(UO 2 ) 2 ( μ 3 -O)(L2)(CH 3 COO)]·DMF (U-L2), while lanthanide ions (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Yb, and Lu) remain in solution due to their inability to achieve similar coordination. This selective crystallization strategy yields exceptional separation factors (SFs) between U(VI) and Ln(III), with a value of 756276 between U(VI) and Sm(III), the highest reported to date. Furthermore, this fractional crystallization separation process can be achieved under mild ambient conditions with high SFs, enabling the development of a rapid, safe and energy-efficient strategy for once-through separation of high oxidation state actinides from lanthanides.
研究领域:
核化学与化工
·
放射化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2025
·Vol. 150
·期 4
·750-759
·
IF 3.3
QiKe Wang,JieMiao Yu,ZhaoXiang Zhong,Cai Hui,Yi Zhang,Huizhou liu,LiangRong Yang
Sensitive and rapid detection methods for rare earth elements (REEs), including lanthanides (Lns), will facilitate the mining and recovery of these elements. Here, we innovated a rapid, highly selective and sensitive fluorescence detection method for Lns, based on Hans-Lanmodulin, a newly discovered protein with high selectivity and binding affinity for rare earth elements. By labelling the fluorescein moiety FITC onto Hans-Lanmodulin, named as FITC-Hans-LanM. When rare earth ions are present in solution, FITC-Hans-LanM will specifically bind rare earth ions undergoing a conformational change from a disordered state to a dimer, in which the FITC molecules come close to each other, resulting in decreasing fluorescence intensity or even quenching. The assay was responsive to light, medium and heavy rare earth ions. The fluorescence signal has a good linear relationship with Nd3+ concentration in the range of 1–20 nM. The detection limit of the method was 0.512 nM, within 1 min. This method could become a useful technique for the detection and quantification of rare earth elements in environmental and industrial samples.
研究领域:
生物化学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Yimin Cai,Seraj A. Ansari,Kuirong Fu,Beichen Zhu,Haoyang Ma,Lixi Chen,Steven D. Conradson,Song Qin,Haiying Fu,Prasanta K. Mohapatra,Lihua Yuan,Wen Feng
Selective extraction of highly radiotoxic actinides(III) is an important and challenging task in nuclear wastewater treatment . Many proposed ligands containing S or P atoms have drawbacks including high reagent consumption and possible secondary pollution after incineration. The present work reports five novel pillar[5]arene-based extractants that are anchored with picolinamide substituents of different electronic nature by varying spacer. These ligands reveal highly efficient separation of actinides(III) over lanthanides(III). Specifically, almost all of these ligands could extract Am(III) over Eu(III) selectively at around pH 3.0 (SF Am/Eu > 11) with fast extraction kinetics. Variation of the pyridine nitrogen basicity via changing para-substitution leads to an increase in the distribution ratios by a factor of over 300 times for Am(III) with an electron-withdrawing group compared to those with an electron donating group. Investigation of complexation mechanism by slope analysis, NMR, IR, EXAFS , and DFT techniques indicates that each ligand binds two metal ions by pyridine nitrogen and amide oxygen. Finally, these ligands do not show obvious decrease in both extraction and separation ability after being exposed to 250 kGy absorbed gamma radiation . These results demonstrate the potential application of pillar[5]arene-picolinamides for actinide(III) separation.
研究领域:
化学
·
核废料处理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 48
·45556
·
IF 1.86
Hongqiang Yan,Li Zhao,Zhengping Fang,Hao Wang
Complex multilayer coatings composed of α-zirconium phosphate (ZrP), polyethylenimine (PEI), and ammonium polyphosphate (APP) were constructed via layer-by-layer assembly method for flame retardant ramie fabric. Bicomponent PEI/ZrP layers served as insulating barrier coating, and bicomponent PEI/APP layers served as intumescent coating. The flame retardancy of the coated ramie fabric was strongly dependent on the nature of the coatings and the layer-by-layer assembly patterns. The coated ramie fabric with inside PEI/ZrP layers and outside PEI/APP layers possessed the most uniform and consistent coating surface morphology, as well as the highest content of N and P elements, resulting in an excellent improvement in flame retardancy of ramie fabrics. When this kind of coated ramie fabric was heated, the inner PEI/ZrP layer effectively prevent oxygen and heat from penetrating into the substrate, and the outer PEI/APP layer exposed to air with good expansion during combustion. The synergistic effect was formed during the combustion process and could impart ramie fabrics with high flame retardancy. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45556.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
Kuwait Journal of Science
·
2023
·
IF 1.4
Sewgil Saaduldeen Anwer
The current study aimed to determine the major and minor elements in different algal species using energy dispersive x-ray fluorescence (EDXRF). Eight microalgae were isolated, and the dry powder of biomass was pressed for EDXRF. The results showed all chemical compositions in each of the isolates. The major elements were detected as Ca, K, Cl, Si, Mg, and Mn, respectively, with high concentrations in percentages for most algal species including Chara hispida, Chara spp , Chlorella vulgaris, Chlorella spp , Chlorella spp , and Spirogyra turfosa. The minor elements with low percentages were detected as Mn, S, Fe, Al, P and Sr. Whereas the major elements for Spirulina platensis and Nostoc punctiforme were detected as Fe, K, S, the minor elements were seen to include Ca, Cl, Si, Mg, and Mn. There are very few studies that determine the elements in microalgae with EDXRF, which is a rapid, easy method to determine what components and in what quantities they are contained to be used (no chemical pre-treatments are required). Algae contain elements like iron, and calcium, which are vital microelements for dietary intake and metabolism in humans. Algae could be useful if further studies are done on the efficiency of microalgae for calcium and iron absorption in human subjects.
研究领域:
生物学
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Dong Wang,Junshuang Zhou,Junkai Li,Yuanzhe Wang,Li Hou,Faming Gao
Because of its high density, a carbon microsphere is a good candidate for ultrahigh volumetric capacity electrode materials. We find that the synergistic effects of nitrogen and iodine element can tremendously improve the carbon electrode capacity. Here, we present a high volumetric capacity anode consisting of iodine and nitrogen codoping carbon microspheres synthesized by a low-temperature solvothermal route. A reversible capacity of 1418 mAh cm–3, which is much larger than that of commercial graphitic carbon anode, is achieved at a current density of 0.05 mA cm–2 by using these carbon microspheres as anode material. After 100 charge–discharge cycles at 0.1 mA cm–2 and 500 charge–discharge cycles at 1 mA cm–2, carbon microspheres retained volumetric capacities of 1335 and 1090 mAh cm–3, respectively
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Jie Ding,Siqun Tang,Xiao Chen,Mu Ding,Jinyang Kang,Rulei Wu,Zhihai Fu,Yongdong Jin,Laicai Li,Xiaojie Feng,Ruibing Wang,Chuanqin Xia
The removal of actinide (An) and lanthanide (Ln) elements from aqueous solution is a significant strategy for the safe disposal of radioactive wastes. Herein we presented a 5-methylbenzotriazole modified graphene oxide (MBTA-GO) as a novel adsorbent, in which benzotriazole group was used as targeted sorption site bearing strong affinity toward An-Ln (An and Ln) ions for the first time. MBTA-GO was characterized by Fourier transformed infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). The effect of pH and initial concentration on combined adsorption of An-Ln were examined, and the results showed that the adsorption of metal ions on MBTA-GO was strongly dependent on pH in multi-cation solution, and MBTA-GO exhibited excellent An-Ln selectivity (selectivity coefficients are more than 99%), overwhelming majority of other reported adsorbents. The cycle experiments revealed that the MBTA-GO exhibited good reusability and structural stability. By density functional theory (DFT) calculation, the binding energy of Cation-MBTA-GO followed the order of Th(IV) > U(VI) > Eu(III) > La(III) > Sr(II) > Cs(I), suggesting that the benzotriazole groups were preferentially responsible for An-Ln ions on MBTA-GO, which is in well agreement with the experimental results. Finally, the mechanism of selective coadsorption was revealed, which is the synergistic effect of chemical complexation and electrostatic interaction.
研究领域:
环境科学
·
材料科学
·
放射化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）