ACS Nano
·
2026
·
IF 16
Hui Cheng,Tong Zeng,Xinghui Cao,Bo Zhang,Jingmei Zhang,Yaru Wang,Liang Zhang,Jianhua Yan,Shouzhu Li
As an emerging class of ceramic materials, high-entropy ceramics (HEC) have captured significant interest. Yet, their inherent brittleness and inelasticity restrict broader engineering applications like thermal protection. Here, we report a carboxylic ligand confinement strategy, integrating sol–gel electrospinning with optimized postcalcination treatment, enabling the scalable fabrication of flexible high-entropy (Y0.2Yb0.2Ho0.2Lu0.2Er0.2)3Al5O12 (RE3Al5O12) single-crystal fiber films. We initiated the process by preparing an aluminum sol and subsequently coordinating it with carboxylate under hydrochloric acid catalysis. The inorganic colloid growth is modulated by the stoichiometric addition of tartaric acid, forming a hybrid inorganic/organic sol. Then, the sol was electrospun into precursor fiber films followed by calcination at 900 °C to form flexible RE3Al5O12 films with a low density of 0.1398 g/cm3 and a low thermal conductivity of 25.1 mW·m–1·K–1. The HEC film maintains phase stability and structural integrity up to 1600 °C or in liquid nitrogen. In addition, aerogels fabricated by stacking these HEC films demonstrate an 80% strain elastic recovery and exhibit great resistance to thermal shock. This work establishes a strategy for synthesizing lightweight HEC garnet fibers poised for extreme-environment thermal protection systems.
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高影响因子
CORROSION SCIENCE
·
2026
·
IF 10.3
Chengyu Wang,Ming Cheng,Haofeng Luo,Tao Jiang,Wentao Zhou,Yafei Wang
Molten salts are widely used in high-temperature nuclear systems, yet their interactions with structural alloys, particularly under the influence of fission product species, are still not fully understood. In this study, the corrosion behaviors of Fe-based 316L stainless steel (316L SS) and Ni-based Inconel 600 alloy were investigated in LiCl-KCl eutectic molten salt at 500 °C, under the influences of thermodynamically active lanthanide and less-active lanthanide/non-lanthanide fission product species. The results reveal that both active and less-active lanthanide species enhance the corrosion of alloys in molten salt, whereas less-active non-lanthanide barely affect the alloy’s corrosion as thermodynamically expected. The unexpected corrosion enhancement caused by less-active lanthanide species (Ce 3 + , La 3+ , Nd 3+ , Sm 3+ , Pr 3+ , Gd 3+ , and Y 3+ ) is attributed to the formation of lanthanide oxychlorides (LnOCl, Ln represents less-active lanthanide species), driven by trace oxygen present in Ar atmosphere. Furthermore, the 316L SS was found to exhibit better corrosion resistance than Inconel 600 alloy in LiCl-KCl molten salt containing fission products, despite Ni-based alloys being widely regarded as more corrosion-resistant than Fe-based alloys in molten salt environments. This study systematically investigates, for the first time, the effects of fission products on both Fe-based and Ni-based alloys in molten salt, providing a comprehensive understanding of the behavior of structural alloys for molten salt applications in the nuclear industry.
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HYDROMETALLURGY
·
2025
·
IF 5.3
Jun Li,Ruihui Wu,Shengjun Tian,Ronghao Liu,Huiying Wei,Yanzhao Yang
The NdFeB magnets are the most widely used permanent magnetic materials in the international arena, and the recovery of Nd(III) from the growing number of waste-NdFeB magnets is becoming increasingly crucial. In this study, a novel synergistic extractant consisting of bis(2,4,4-trimethylpentyl) phosphonic acid (Cyanex 272) and 8-hydroxyquinoline (8-HQ) is proposed for the recovery of Nd(III) from waste-NdFeB magnets. First, the influence of the ratio of the two extractants on the synergistic extraction coefficient was investigated. The coextraction coefficient ratio of the two extractants Cyanex 272 and 8-HQ was 1:1. The extraction behaviors under different conditions, such as the extractant concentration, aqueous phase pH (pH = 5), and oscillation time (1 min), were investigated. Under optimal conditions, the extraction efficiency reached 99.6 %. A chelating extraction mechanism was proposed on the basis of UV–vis spectroscopy, FT-IR spectroscopy, and NMR spectroscopy methods. The excellent extraction efficiency was maintained after five cycles of extraction and stripping, indicating the potential for application in light and heavy rare earth separation processes. Overall, this study aims to provide a new economically viable method for the recovery of Nd(III) from waste-NdFeB magnets.
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高影响因子
Journal of Materials Chemistry B
·
2026
·
IF 5.7
Hao Wang,Jiaxin Wang,Rui Wang,Liang Zhou
Functional 1,8-naphthalimide derivatives are rapidly developing in the field of anticancer research. However, the unpredictable side effects of 1,8-naphthalimide derivatives limit their transition from clinical trials to clinical drugs. To low down the overall cytotoxicity of 1,8-naphthalimide derivatives after coordination with metals, we have synthesized and characterized three new rare earth naphthalene dicarboxylate complexes with the general molecular formula of [Ln(TTA)3NI-Phen], where Ln=Er, Nd, Yb, respectively. In vitro antitumor screening revealed that all three complexes exhibit better inhibitory activities against A549 and H1299 cancer cell lines compared with the commercial anticancer drug cisplatin. Especially, Er(TTA)3NI-Phen exhibited specific cytotoxicity to H1299 cancer cells in micromole magnitude and lower toxicity to normal human cells Beas-2b. Interestingly, Er(TTA)3NI-Phen triggers lung cancer cells apoptosis via a mitochondrial dysfunction pathway, which is caused by dysfunction of mitochondria and cell cycle arrest. Most importantly, Er(TTA)3NI-Phen demonstrates an inhibition rate of up to 84% against H1299 tumors.
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高影响因子
MOLECULES
·
2023
·Vol. 28
·期 7
·3175
·
IF 4.6
Xiaolei Song,Congzhu Xu,Wendong Yao,Jieyun Wen,Qufu Wei,Yonggui Li,Xinqun Feng
Magnetic protective fabrics with fine wearability and great protective properties are highly desirable for aerospace, national defense, and wearable protective applications. The study of the controllable preparation method of Nd3+doped in Fe3O4nanoparticles with supposed magnetic properties remains a challenge. The characterization of the microstructure, elemental composition, and magnetic properties of NdFe2O4nanoparticles was verified. Then, the surface of NdFe2O4was treated with glyceric acid to provide sufficient –OH. Subsequently, the connection of the nanoparticle by the succinimide group was studied and then grafted onto cotton fabrics as its bridging effect. The optimal loading rate of the functional fabrics with nanoparticles of an average size of 230 nm was 1.37% after a 25% alkali pretreatment. The color fatness to rubbing results showed better stability after washing and drying. The corresponding hysteresis loop indicated that the functional fabrics exhibited typical magnetism behavior with a closed “S” shape and a magnetic saturation value of 17.61 emu.g−1with a particle size of 230 nm. However, the magnetic saturation value of the cotton fabric of 90 nm was just 4.89 emu.g−1, exhibiting controllable preparation for the aimed electromagnetic properties and great potential in radiation protective fields. The electrochemical properties of the functional fabrics exhibited extremely weak electrical conductivity caused by the movement of the magnetic dipole derived from the NdFe2O4nanoparticles.Keywords:NdFe2O4nanoparticles;grafting;cotton fabric;magnetic protective
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高影响因子
Advanced Energy and Sustainability Research
·
2023
·Vol. 4
·期 9
·2300023
·
IF 5.8
Shuai Zhang,Mingzi Sun,Leilei Yin,Siyuan Wang,Bolong Huang,Yaping Du,Chun-Hua Yan
The oxygen evolution reaction (OER) is critical for renewable energy conversion and storage devices. However, the rational design of electrocatalysts with suitably high efficiency and stability in strongly acidic electrolytes remains a major challenge. Herein, a solid-phase synthesis strategy is developed for the preparation of Ir-Ln (Ln = La, Ce, Pr, Nd) alloy nanoparticles with uniform particle size on carbon supports as superior acidic OER catalysts. Tailoring by the rare earth (RE) elements, Ir 2 Pr achieves a maximum mass activity of 2.10 A mg −1 Ir at 300 mV overpotential and stability over 200 h at 10 mA cm −2 in 0.5 m H 2 SO 4 , which is 9.5 and 20 times higher to pure Ir nanoparticles. Furthermore, Ir 2 Pr alloy nanoparticles exhibit excellent durability in strongly acidic electrolytes. Theoretical calculations have confirmed that the OER performances are strongly related to the RE elements in the alloy, where the d-band centers show a consistent trend with the overpotential. Moreover, the highest electroactivity of Ir 2 Pr is attributed to the improved electron transfer by 4 f orbitals and the suitable binding strength of intermediates. Herein, a fundamental understanding of the lanthanide–electrochemical performance relationship is provided and will also inspire the rational design of efficient nanoscale RE alloy electrocatalysts.
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高影响因子
RSC Advances
·
2022
·Vol. 12
·期 53
·34715-34723
·
IF 4.036
Jie Chen,Yu Ni,Bohao Mei,Huiyu Jiang,Yunli Wang,Yangyi Chen,Huan Qi
To reuse camellia husk waste and expand the scope of natural dyes, this research proposes pigment extraction from camellia husks and investigates various properties when applied on silk fabrics. Single-factor experiments were used to screen and optimize the dyeing process. The extracted pigments and dyed fibers were analyzed and characterized by LC-MS, FTIR and SEM, respectively. Six metal mordants were compared with each other, and their possible mordanting mechanisms were proposed. Color fastness, UV resistance, and antioxidant and antibacterial properties were evaluated after dyeing. The results showed that the optimal dyeing process was as follows: dyestuff mass 50 g L−1, holding time 45 min, bath pH 3.0, holding temperature 100 °C. LC-MS and FTIR results showed that the pigments in the extracts were mainly dimeric and multimeric procyanidins. Metal ion addition increased the K/S value while the pre-mordanting method had a superior dyeing depth. The rubbing and washing fastness of the dyed fabric were all above grade 4.0. Meanwhile, the dyed sample exhibited favorable UV resistance, and antioxidant and antibacterial properties, including a UPF index of 63.4 and an inhibition rate of 98.74% and 97.39% for S. aureus and E. coli, respectively.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yusheng Yang,Ying Qin,Tuoyao Wang,Yazhu Zhang,Tianyi Shi,Jiayi Li,Haoran Xu,Zhengxiang Xia,He Sun,Zengwu Zhao
Neodymium-iron-boron (NdFeB) magnets are the rare earth products with the largest output, and their recycling is of significance for the sustainable development of rare earth resources. Currently, the recycling technology of NdFeB wastes is more concerned with the recovery of rare-earth elements, while iron is regarded as a low-value by-product. In this work, chemical dealloying method in molten chlorides was proposed to separate neodymium from FeNd alloy and simultaneously to prepare porous iron alloy. The effects of the molar ratio of reactants, dealloying temperature and time on the separation efficiency of neodymium were investigated. The maximum separation efficiency of neodymium from FeNd alloy can reach 96 %. The separation process of neodymium and the formation process of porous iron alloy were estimated based on the ICP, XRD, XPS, SEM-EDS analyses of recycled products. Neodymium was separated from FeNd alloy by the reaction with Nd(III) ions to form Nd(II) ions in molten chlorides, while the porous iron alloy was formed. The formed Nd(II) ions can be transformed into Nd(III) ions and metallic neodymium particles by the disproportionation reaction. In the process, Nd(III) ions can act as a complement to react with FeNd alloy. And neodymium was recovered in the form of metallic neodymium and NdOCl from the chloride melt and the rinsing solution of porous iron alloy, respectively. The formed porous iron alloy had the surface area of unit volume in the range of (2 ∼ 20) × 10 4 cm 2 cm −3 , the pore width around 10 nm and good hardness. The porous iron alloy is a high value-added product.
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高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 24
·4478
·
IF 5.719
Qingyuan Wang,Zhizheng Zhang,Dehui Qiu,Xuanxiang Mao,Zhaoxi Zhou,Tiansong Xia,Jifu Wei,Qiang Ding,Xiaobo Zhang
Just-in-time evaluation of drug resistance in situ will greatly facilitate the achievement of precision cancer therapy. The rapid elevation of reactive oxygen species (ROS) is the key to chemotherapy. Hence, suppressed ROS production is an important marker for chemotherapy drug resistance. Herein, a NIR-II emission smart nanoprobe ([email protected], consisting of a lanthanide-doped nanoparticle (LnNP) core and metal-organic framework shell (ZIF8)) is constructed for drug delivery and in vivo NIR-II ratiometric imaging of ROS for tumor drug resistance evaluation. The drug-loaded nanoprobes release therapeutic substances for chemotherapy in the acidic tumor tissue. As the level of ROS increases, the LnNPs shows responsively descending fluorescence intensity at 1550 nm excited by 980 nm (F1550, 980Ex), while the fluorescence of the LnNPs at 1060 nm excited by 808 nm (F1060, 808Ex) is stable. Due to the ratiometric F1550, 980Ex/F1060, 808Ex value exhibiting a linear relationship with ROS concentration, NIR-II imaging results of ROS change based on this ratio can be an important basis for determining tumor drug resistance. As the chemotherapy and resistance evaluation are explored continuously in situ, the ratiometric imaging identifies drug resistance successfully within 24 h, which can greatly improve the timeliness of accurate treatment.Keywords:lanthanide doped nanoparticle;ZIF8;NIR-II ratiometric imaging;smart drug delivery system;tumor drug resistance evaluation
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Kaibo Hu,Yucheng Liu,Xiaowen Zhou,Shahid Hussain,Ke Li,Qingfeng Chen,Chuanqi Zhang,Weijie Song,Xuewei Li,Yinhua Wan
Recovery of rare earth elements (REEs) from mine wastewater is essential for maintaining rare earth reserves and sustainable application of REEs. In the present study, we prepared a phosphoric acid modified kaolin (P-K) adsorbent by a simple mechanochemical process for the selective recovery of REEs from rare earth wastewater. The impacts of phosphoric acid dosage, milling duration, initial pH, temperature, initial ion concentration, and adsorbent dosage on the selective adsorption of REEs were investigated. The findings demonstrate that the adsorption of REEs by P-K follows pseudo-second-order kinetic model and the Langmuir isotherm model, and is dominated by chemical adsorption, with a maximum adsorption capacity of 19.82 mg/g at 50 ℃. Additionally, in an original mine wastewater, the recovery rate of REEs can reach more than 90%, whereas the adsorption rates of calcium, magnesium and, ammonia nitrogen (whose concentration is 18 times that of REEs) are nearly zero, indicating that P-K has extremely high selectivity for REEs. Furthermore, the feedstock solution containing 40 mg/L of REEs may be concentrated to 3510 mg/L following enrichment treatment, and 99.9% of the REEs are eluted using a low concentration of hydrochloric acid. The findings illustrate that P-K has a wide range of potential applications in the treatment of rare earth industrial effluents.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Xudong Gong,Qiang Tian,Jiebiao Li,Ju Wang,Minhao Yan,Mark J. Henderson
Incorporation of fission products in spent nuclear fuel is of interest in the frame of safe storage of high-level nuclear waste in a deep geological repository. Uranyl oxyhydroxide films were grown on silicon wafer to represent the corrosion product formed on the surfaces of the fuel. Films were obtained by hydrolysis of uranyl ions (9 mM) in mild conditions (≤60 °C) using either Mg(OH) 2 , raw brucite, La(OH) 3 , or NH 4 OH to control the solution pH to ≈ 5.0. To identify the mineral phases we used the grazing-incidence X-ray technique. Atomic force microscopy data indicated that the surfaces of metaschoepite films prepared using either Mg(OH) 2 or brucite at 50 °C for 3 h were self-affine fractal ( D f = 2.5). The concentration (wt.%) of reactant ions detected in a metaschoepite film after reaction at 70 °C for three days as determined by X-ray fluorescence was: La (8.90) > Nd (5.6) > Ce (3.2) > Eu (2.5) > Pb (0.7) > Sr (0.14). Metaschoepite and sodium uranate hydrate were identified in a film formed in Cl-SO 4 -Na type groundwater from the Beishan area (China), the preselected area of a radioactive waste disposal repository.
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高影响因子
Materials
·
2023
·Vol. 16
·期 24
·7585
·
IF 3.4
Xianghua Wang,Lin Zhou,Xudong Zhao,Wenlong Ma,Xinjun Wang
In this study, all-inorganic perovskite quantum dots (QDs) for pure blue emission are explored for full-color displays. We prepared CsPbBr3and Cs3NdCl6QDs via hot injection methods and mixed in various ratios at room temperature for color blending. Nd-doped CsPb(Cl/Br)3QDs showed a blueshift in emission, and the photoluminescence quantum yields (PLQY, ΦPL) were lower in the 460–470 nm range due to surface halogen and Cs vacancies. To address this, we introduced a silane molecule, APTMS, via a ligand exchange process, effectively repairing these vacancies and enhancing Nd doping into the lattice. This modification promotes the PLQY to 94% at 466 nm. Furthermore, combining these QDs with [1]Benzothieno[3,2-b][1]benzothiophene (BTBT), a conjugated small-molecule semiconductor, in a composite film reduced PLQY loss caused by FRET in solid-state QD films. This approach achieved a wide color gamut of 124% National Television System Committee (NTSC), using a UV LED backlight and RGB perovskite QDs in a BTBT-based organic matrix as the color conversion layer. Significantly, the photostability of this composite was enhanced when used as a color conversion layer (CCL) under blue-LED excitation.Keywords:exciton;quantum dots;exciton binding energy;zeta potential;Förster resonance energy transfer;nanostrain;color conversion layer
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高影响因子
危险品化学品经营许可证（带存储）