INTERNATIONAL OPHTHALMOLOGY
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2026
·Vol. 46
·期 1
·80
·
IF 1.4
Hang Zhongci,Li Yingxian,Ren Weijie,Du Hongwu
Purpose Human umbilical cord mesenchymal stem cell lysates (UCML) have crucial bioactivities, including tissue regeneration, wound healing, and immune regulation, showing great potential for treating eye diseases. This study investigates the therapeutic efficacy of UCML loaded in artificial tears (AT@UCML) on dry eye syndrome (DES) and retinal injury. Methods This study first evaluated the safety, antioxidant properties, and tissue-repairing effects of AT@UCML in disease-relevant ocular cells. Then, we treated DES and ischemia/reperfusion (I/R) retinal injury mouse models by AT@UCML. To assess the effects in DES mice, we measured tear secretion, corneal damage, and goblet cell numbers. For I/R mice, we examined retinal ganglion cell numbers and retinal thickness. Results Experiments showed that AT@UCML reduced oxidative stress and protected ocular cells. In DES mice, it increased tear secretion, repaired corneal damage, and restored goblet cell counts. In I/R mice, it reduced retinal ganglion cell loss and restored retinal thickness. Conclusions AT@UCML effectively treated DES and I/R injuries by protecting key ocular cells. This study expands the application of stem cell therapy in ophthalmology and provides a basis for developing related treatments.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 3
·239
·
IF 2.8
Gao Chang,Huang Lijuan,Liu Qi,Wu Shize,Xu Zedong,Zhao Chunlin,Wu Xiao,Gao Min,Lin Cong
Lead-based multilayer thin film capacitors with excellent energy storage performances have great application potential. However, the effect of stacking patterns on the dielectric behaviors has not been well investigated, especially for the multilayer thin films prepared by chemical solution methods. Here, the relaxor ferroelectric (RFE) (Pb 0.92 La 0.08 )(Zr 0.65 Ti 0.35 )O 3 and antiferroelectric (AFE) (Pb 0.98 La 0.02 )(Zr 0.95 Ti 0.05 )O 3 were chosen to construct diverse multilayer thin film capacitors with different RFE/AFE stacking patterns. Based on their crystal structure, dielectric features, and energy storage behaviors, the effect of stacking orders and AFE phase thicknesses on the capacitor performances were discussed from the perspectives of the positive and negative interface contribution. A superior recoverable energy density of 26.28 J cm −3 was achieved at a breakdown strength of 3.19 MV cm −1 , accompanied with thermal stability up to 170 °C, frequency stability up to 2 kHz, and fatigue endurance after 10 6 charging-discharging cycles. The experimental results and related discussion will support the research and the industrialization of multilayer thin film capacitors.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Chen Chen,Guo Yan,He Leilei,Liang Ying,Zhang Mingxin,Wang Wenmin,Chen Yuliang,Wu Yuliang,Meng Rui,Huang Weiwei,Yang Fei,Cheng Jun,Yi Xuesong
The development of efficient and cost-effective catalytic systems for antibiotic degradation remains a significant challenge in environmental remediation. Herein, a novel Co/CuFe 2 O 4 composite was synthesized via a sol–gel combustion method to construct a multi-metal synergistic photocatalytic-Fenton-like system for the degradation of oxytetracycline (OTC). Density functional theory (DFT) calculations indicate that the incorporation of Co leads to a more negative material formation energy, suggesting that Co/CuFe 2 O 4 has a more stable electronic structure. This optimized electronic structure enhances the redox cycle (Fe 3+ /Fe 2+ , Cu 2+ /Cu + , and Co 2+ /Co 3+ ), thereby improving the activation efficiency at low concentrations of H 2 O 2 (0.1–6 mmol/L). Under optimal conditions (pH 3, 35 °C, 4 mmol/L H 2 O 2 ), the 13% Co/CuFe 2 O 4 catalyst achieved complete OTC degradation within 60 min, with an 0.1 mmol/L H 2 O 2 utilization rate of 17.81% at neutral pH. Moreover, the catalyst exhibited excellent stability, retaining 87.5% degradation efficiency after five cycles. Radical quenching experiments confirmed that ·OH, h + , and ·O 2 − were the dominant reactive species, while the synergistic effect of multiple metal redox pairs facilitated efficient electron transfer and H 2 O 2 activation. This work provides a promising strategy for designing high-performance Fenton-like catalysts with broad pH adaptability and low oxidant consumption, offering significant potential for the treatment of antibiotic-contaminated wastewater. Graphical
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Nature Communications
·
2023
·Vol. 14
·期 1
·1-12
·
IF 16.6
Chen Jianjun,Xiong Shangchao,Liu Haiyan,Shi Jianqiang,Mi Jinxing,Liu Hao,Gong Zhengjun,Oliviero Laetitia,Maugé Françoise,Li Junhua
The spillover of oxygen species is fundamentally important in redox reactions, but the spillover mechanism has been less understood compared to that of hydrogen spillover. Herein Sn is doped into TiO 2 to activate low-temperature (<100 °C) reverse oxygen spillover in Pt/TiO 2 catalyst, leading to CO oxidation activity much higher than that of most oxide-supported Pt catalysts. A combination of near-ambient-pressure X-ray photoelectron spectroscopy, in situ Raman/Infrared spectroscopies, and ab initio molecular dynamics simulations reveal that the reverse oxygen spillover is triggered by CO adsorption at Pt 2+ sites, followed by bond cleavage of Ti-O-Sn moieties nearby and the appearance of Pt 4+ species. The O in the catalytically indispensable Pt-O species is energetically more favourable to be originated from Ti-O-Sn. This work clearly depicts the interfacial chemistry of reverse oxygen spillover that is triggered by CO adsorption, and the understanding is helpful for the design of platinum/titania catalysts suitable for reactions of various reactants.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·96
·
IF 36.3
Fang Wenhan,Xu Kailong,Wang Xinlei,Zhu Yuanhang,Li Xiuting,Liu Hui,Li Danlei,Wu Jun
A universal synthetic strategy was proposed to construct heteroatom axially coordinated Fe–N 4 single-atom seawater catalyst materials (Cl–Fe–N 4 and S–Fe–N 4 ).
The Cl–Fe–N 4 catalyst achieves a limiting current density of 5.8 mA cm −2 and a half-wave potential of 0.931 V vs. RHE in alkaline synthetic seawater, outperforming commercial Pt/C (40 wt%).
The seawater-based zinc-air battery fabricated with Cl–Fe–N 4 demonstrates a power density of 187.7 mW cm −2 at 245.1 mA cm −2 and maintains stable cycling performance for 200 h.
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Journal of Analysis and Testing
·
2026
·
IF 7
Lu Heng,Chen Jingru,Zhang Maosheng,Guo Liangqia
Microplastics (MPs) are emerging pollutants, considered one of the most serious threats to the ecosystem and human health. Nile Red (NR) is the most widely used dye for visualizing MPs. However, NR staining is affected by natural organic materials and shows weak fluorescence for certain types of MPs, such as polyamide (PA) and polyvinyl chloride (PVC), as well as MPs with fiber morphology. Herein, a rapid, universal staining method for visualizing MPs was proposed, using CsPbBr 3 perovskite nanocrystals (NCs) as a fluorescent dye synthesized by natural deep eutectic solvents (NADESs) as solvents and surface ligands (CsPbBr 3 @NADESs NCs). The staining method proved to be highly effective for common MPs, including PA and PVC MPs. Moreover, natural organic substances, such as cellulose, lignin, mussel shell, chitin, clam shell, shrimp shell, humic acid, and sand grains, could not be stained by CsPbBr 3 @NADESs NCs, which allowed MPs to stand out for visual detection even that the environmental samples were incompletely pre-treated. This study demonstrated CsPbBr 3 @NADESs NCs as a promising fluorescent dye for visual detection of MPs in environmental samples.
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Biomass Conversion and Biorefinery
·
2026
·Vol. 16
·期 1
·13
·
IF 4.1
Chen Yunyi,Li Yingchao,Jiang Guiping,Liu Hanqi,Yin Xiaofei,Lu Zhaoxia,Ju Peng
To address the ecological problem caused by the accumulation of green tide Enteromorpha prolifera and the challenge of remediating organic pollutants in water bodies, this study utilized Enteromorpha prolifera as raw materials to synthesize a novel nitrogen-doped biochar (NBPBC) catalyst through ball-milling and pyrolysis. The resulting catalyst was applied to activate peroxymonosulfate (PMS) for antibiotic tetracycline (TC) degradation. The optimized NBPBC exhibited a large specific surface area (62.0022 m 2 /g) and a high content of graphitic nitrogen. Experimental results showed that the NBPBC/PMS system achieved 100% removal efficiency towards TC within 60 min with a rate constant k = 0.06629 min − 1 , significantly outperforming systems without ball-milling or nitrogen doping. Additionally, NBPBC maintained good a catalytic activity and stability after six cycles, with the TC degradation efficiency remaining above 80%. Mechanistic studies revealed that the catalytic mechanism was dominated by ∙O 2 − , with synergistic contributions from ∙OH, 1 O 2 and SO 4 ∙ − . This work achieves the high-value utilization of Enteromorpha prolifera waste and provides an efficient strategy for aquatic organic pollutant remediation, offering a dual-win solution to ecological and environmental challenges. Graphical abstract A novel N-doped biochar catalyst based on Enteromorpha prolifera was synthesized through a ball-milling and single-step pyrolysis method, which can effectively activate PMS to realize the rapid degradation of organic pollutants and the high-value utilization of Enteromorpha prolifera .
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·93
·
IF 36.3
Ma Jiaxin,Shao Cong,Wang Yirong,Niu Guosheng,Yang Kaiyi,Zhao Yao,Wang Fuyi,Nie Zongxiu,Wang Jizheng
An all-in-one modification strategy was developed by introducing a multifunctional complex ammonia borane (BNH 6 ) into the buried and upper interfaces simultaneously.
BNH 6 uniquely realizes dual-interfacial defect passivation and iodide oxidation suppression by interacting with SnO 2 through hydrolysis, coordinating with Pb 2+ and inhibiting the oxidation of I − .
The optimized perovskite solar cells achieve a champion efficiency of 26.43% (certified, 25.98%) with negligible current density–voltage hysteresis and significantly improved thermal and light stability.
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IONICS
·
2020
·Vol. 26
·期 9
·4401-4411
·
IF 2.394
Mao Gui-Cai,Yu Hai-Tao,Guo Chen-Feng,Xie Ying,Yi Ting-Feng
Layered Li 2 MoO 3 (LMS) is a promising building block for constructing high capacity positive electrode materials for lithium-ion battery applications. But the samples without a well-controlled morphology restrict the improvement of the performance. By using the MoO 2 microsphere as a self-template, Li 2 MoO 3 materials with a hierarchical micro-spherical morphology were prepared successfully. The structural details were analyzed by XRD, SEM, TEM, and EDS techniques, while N 2 adsorption and desorption isotherm confirmed that Li 2 MoO 3 microspheres have a mesoporous structure with a surface area ~ 7.4 times larger than bulk Li 2 MoO 3 . Therefore, LMO microsphere exhibits an excellent electrochemical performance. It can deliver the capacities of 246.91, 184.75, 160.10, 127.57, 99.61, and 75.63 mA h g −1 at the current densities of 34, 100, 170, 340, 680, and 1000 mA g −1 , which are larger than the values of the bulk samples at the same rates. Our experiments also confirmed that the special morphology is helpful for the reduction of the charge transfer resistance and the improvement of the reaction activity and reversibility of the materials.
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PHOTOSYNTHETICA
·
2015
·Vol. 52
·期 3
·341-350
·
IF 1.409
Yang W.,Yin Y.,Jiang W.,Peng D.,Yang D.,Cui Y.,Wang Z.
Wheat ( Triticum aestivum L.) cv. Jimai22 was used to evaluate the effect of ethylene evolution rate (EER) and 1-aminocyclopropane-1-carboxylic acid (ACC) and their relations with photosynthesis and photochemical efficiency in plants well-watered (WW) and under a severe water deficit (SWD). SWD caused a noticeable reduction in the grain mass. The marked increases in both EER and the ACC concentration were observed under SWD; it was reversed effectively by exogenous spermidine (Spd) or amino-ethoxyvinylglycine (AVG). Thermal images indicated that SWD increased obviously the temperature of flag leaves, mainly due to the decrease in transpiration rate under SWD. Exogenous Spd or AVG decreased to some extent the temperature of the flag leaves. The strong decline in photosynthetic rate ( P
N ) and stomatal conductance as well as the photodamage of PSII were also observed under SWD after 14 and 21 days after anthesis (DAA). Intercellular CO 2 concentration was reduced at 7 DAA, but slightly increased at 14 and 21 DAA under SWD, indicating that the decreased P
N at 7 DAA might result from stomatal limitations, while the decline after 14 and 21 DAA might be attributed to nonstomatal limitations. Correlation analysis suggested that EER and ACC showed negative relations to photosynthesis and photochemical efficiency. Data obtained suggested that the effects of SWD were mediated predominantly by the increase in EER and ACC concentration, which greatly decreased the leaf photosynthesis and photochemical efficiency, and, therefore, reduced the grain mass. Application of Spd or AVG reduced the EER and ACC, and thus positively influenced photosynthesis and photochemical efficiency under SWD.
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MRS BULLETIN
·
2024
·Vol. 50
·期 2
·101-114
·
IF 4.1
Cheng Danpeng,Sha Wuxin,Guo Yaqing,Tang Shun,Zhong Jun,Du Jinqiao,Tian Jie,Cao Yuan-Cheng
The crystal structure evolution of LiNi x Co y Mn 1− x−y O 2 (NCM) lithium-ion batteries has a significant impact on battery performance. Using the crystal structure observed by advanced scanning transmission electron microscopy (STEM) equipment as input for simulation calculations, rather than theoretical atomic configurations, can improve simulation accuracy. The rise of deep learning models has enhanced the analytical efficiency of STEM images and brought dawn to battery research. However, there are still very few atomic detection models that can be generalized to different crystal structures, such as the layered phase and rock-salt phase of NCM. We propose a novel AtomSeg model that enables one-stage, real-time atomic detection in STEM images, significantly enhancing segmentation accuracy. Additionally, we introduce a framework that combines AI-driven segmentation results with simulation calculations, leveraging real atomic coordinates to more accurately reflect the actual atomic states. AtomSeg is only trained on simulated STEM images of rock-salt phases while it can be implemented in real STEM images of different scales and phases. Compared to previous deep learning methods, AtomSeg has improved the accuracy of identifying the positions and types of atoms and defects. Subsequently, AtomSeg was used to segment instances of STEM images from NCM, and the segmented localization information was used to reconstruct a three-dimensional atomic model, which was then used for simulation calculations of lithium migration properties. This research paradigm can improve the utilization of STEM data and the accuracy of simulation calculations, effectively promoting the integration of deep learning with material experimental characterization and simulation calculations. Impact statement The groundbreaking advancements in understanding the crystal structure evolution of LiNi x Co y Mn 1− x−y O 2 (NCM) lithium-ion batteries, as detailed in our research, have profound implications for energy-storage devices. By leveraging advanced scanning transmission electron microscopy (STEM) technology and integrating it seamlessly with simulation calculations, we have paved a new path toward more precise and predictive battery design. The emergence of deep learning has further accelerated materials research progress, revolutionizing the way STEM images are analyzed. However, the scarcity of generalized atomic detection models for diverse crystal structures still hinders the applications of deep learning analytical tools. Our proposed AtomSeg model can identify atomic positions and types with unprecedented accuracy in real STEM images, demonstrating the feasibility of real-time atomic detection across different scales and phases. Moreover, the utilization of AtomSeg-segmented STEM images to reconstruct three-dimensional atomic models has opened up new avenues for simulating lithium migration properties. This achievement underscores the power of deep learning in bridging the gap between experimental characterization and computational modeling. In summary, this research paradigm represents a paradigm shift in battery research, demonstrating how advanced computational techniques can be harnessed to unlock the full potential of experimental data. The central innovation lies in our approach of utilizing experimentally observed crystal structures as input for simulation models, as opposed to relying solely on theoretical atomic configurations. This shift has significantly boosted the accuracy of simulations. We believe it will establish a new framework for materials research and development. Graphical abstract
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CELLULOSE
·
2024
·Vol. 31
·期 9
·5725-5745
·
IF 4.9
Chen Ling,Zhang Jianwei,Meng Derong,Cao Xiang,Wang Binbin,Nan Fengqiang,Chen Feiyun,Du Ping,Liao Xin,He Weidong
In energetic materials, high-energy propellants always encounter poor mechanical properties. Herein, a novel energetic binder nitrate glycerol ether cellulose (NGEC)/hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) composite was prepared by a facile, safe water suspension and freeze-drying technology, and integrated in gun propellant (GP) through semi-solvent manufacturing. A series of characterizations and tests were conducted to characterize the NGEC/RDX-GP. The findings revealed that the mechanical properties in terms of the impact strength of NGEC/RDX-GPs with different content of NGEC was improved by 15.3% ~ 117.1%, 3.9% ~ 34.6%, 6.9% ~ 31.1% under conditions of -40 °C, 20 °C and 50 °C; the compression strength was improved by 2.5% ~ 23.1%, 10.7% ~ 27.9%, 7.3% ~ 28.5%, while the tensile strength was improved by 15.4% ~ 35.0%, 10.4% ~ 33.0%, 11.8% ~ 35.5%, respectively. Besides, the thermal decomposition dynamics and thermodynamics were also investigated to probe the thermal properties of NGEC/RDX-GP. Moreover, the impact and electrostatic spark sensitivity have also been tested and present excepted results compared with neat propellant. In addition, the improved gunpowder impetus of NGEC/RDX-GP indicated that the energetic performance of propellant was further enhanced, and maintained stable combustion behavior. Finally, the enhancement mechanism of the propellant was discussed and proposed. Therefore, this construction strategy and application of NGEC/RDX composites in propellants can provide reliable fundamental theory and data support for the development of high performances propellant. Graphical abstract
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