Surface Science and Technology
·
2026
·Vol. 4
·期 1
·40
·
IF 7
Chen Liyang,Yang Yumeng,Jiang Xinyi,Zhang Ping,Zhang Yang,Ye Hanxue,Zhu Benfeng,Liu Jiao,Jiang Li,Wei Guoying
Electrophoretic paints, by virtue of their low cost, straightforward processing and excellent resistance to weathering and pollution, have found extensive application across a wide range of industries. However, their applications are limited by poor thermal stability. To address these issues, this study investigated the preparation and properties of electrophoretic paint/CeO 2 composite coatings fabricated through a one-step electrophoretic deposition method, focusing on the impact of cerium acetate concentration and different cerium compounds (cerium acetate versus CeO 2 nanoparticles) on coating performance. Results revealed that, relative to neat electrophoretic coatings, the addition of cerium compounds markedly improved thermal stability, corrosion resistance and autonomous self-healing capability. The optimal concentration of cerium acetate was determined to be between 0.001 and 0.01 M, within which the coatings exhibited uniform and dense surfaces. Higher concentrations led to particle agglomeration and surface defects. The addition of cerium acetate increased the char yield from 36.13% to 55.54% at 800 °C and reduced the corrosion current density by a factor of ten. Additionally, the coatings demonstrated self-healing capabilities, with cracks healing following thermal treatment at 200 °C. Flame retardancy was also improved, demonstrated by a reduction in the peak heat release rate from 340.9 W/g to 240.6 W/g. In summary, cerium acetate was found to be more effective than CeO 2 nanoparticles in enhancing coating performance. These enhancements make electrophoretic paint/CeO 2 composite coatings highly suitable for high-temperature applications.
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Science China-Materials
·
2026
·
IF 7.7
Xu Hui,Liu Chunbao,Zhang Hao,Yang Konghua,Luo Yuchao,Ren Lei,Ma Suqian,Liang Yunhong
Ionic-polymer metal composites (IPMCs) actuators are smart materials that have garnered increasing attention in the field of soft robotics due to their large bending deformation and rapid response to low operating voltages. However, conventional fabrication methods, such as solution-casting, have inherent limitations, including long fabrication times, simple geometries, and a single deformation mode. This study develops a polylactic acid (PLA)-reinforced perfluorosulfonic acid resin (PFSR) composite filament for fabricating IPMC actuators with programmable deformation via fused filament fabrication (FFF) 3D printing. Incorporating PLA into soft PFSR filaments improves printability and allows the printed parts to be reshaped into desired geometries that are difficult to print directly. The 3D-printed actuator exhibits superior actuation performance, with a bending angle of 169° (5.72% bending strain) under a DC voltage of 3 V and a swing speed of 56° s −1 at 3 V, 1.0 Hz sinusoidal voltage. Interestingly, its shape morphing can also be pre-programmed to switch between bending and helical deformation by controlling printing parameters. These deformations can be predicted by the proposed finite element numerical method. As proof-of-concept demonstrations, various intriguing applications, including a U-shaped structure, a spiral structure, a bionic flower, and a microarchitecture for robotic metamaterials, are fabricated, revealing the potential of the 3D printing method in the realms of stimuli-responsive materials, robotic applications, biomimetic devices, and beyond.
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Science China-Materials
·
2026
·Vol. 69
·期 2
·1104-1112
·
IF 7.7
Sun Guifang,Jin Yuefan,Sun Zhouquan,Lu Haifeng,Li Linpeng
Sutures, as necessary medical devices for postoperative treatment, are no longer merely supportive but are required to have advanced functions to promote repair. Here, we report an absorbable self-powered electrical stimulation suture. The suture is composed entirely of absorbable materials (magnesium, polylactic acid, and polycaprolactone) and can be used in vivo for incision closure and repair. The suture has the capacity to generate spontaneous electrical stimulation in response to body movement, allowing for accelerated tissue reconstruction. An in vivo muscle incision repair model demonstrated that the wound healing rate under treatment with this suture was 1.6 times faster than that of commercial sutures, proving its postoperative therapeutic capability.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2026
·
IF 3.3
Chen Ziang,Liu Yanbing,Zhou Ting,Shi Yu,Tao Yuanyuan,Jiang Wei,Gu Binxian,Hu Qingsong
Developing green and efficient photocatalysts is crucial in addressing the energy crisis and environmental remediation. In this study, we synthesized novel S, N co-doped graphene quantum dots (S, N-GQDs) anchored PbBiO 2 I nanospheres employing a reactive ionic liquid-assisted facile one-step solvothermal approach. We prepared a variety of S, N-GQDs/PbBiO 2 I nanocomposite with different loading amounts of S, N-GQDs and investigated their photocatalytic performance. Among these, S, N-GQDs/PbBiO 2 I-2 exhibits the highest degradation efficiency for antibiotic removal. The incorporation of S, N-GQDs significantly broadens the visible-light absorption range and accelerates the migration of photoinduced carriers, thereby enhancing photocatalytic activities. Various characterization techniques and experimental analyses were employed to explore the charge carrier transfer pathway in this system. Notably, the developed photocatalyst demonstrates two exceptional advantages: a broad-spectral response capability and environmentally-friendly properties, which are of significant relevance for practical applications. This study provides insights for the rational design of high-performance, wide-spectral-light-driven, and environmentally-friendly photocatalysts in the field of environmental remediation.
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Bulletin of Engineering Geology and the Environment
·
2026
·Vol. 85
·期 6
·377
·
IF 4.9
Ling Sixiang,Zhang Xuening,Camaiti Mara,Cao Yijian
The weathering issues in Nankan Grottoes has significantly impaired the appreciation of its historic and artistic values. Yet, there is a lack of appropriate protective materials. This work aimed to evaluate the effectiveness, compatibility and durability of four protective products (MTES, OT-40, Acrylic, and nano-SiO 2 ) for three sandstones (yellow, cyan, and gray) presented in Nankan Grottoes. The hydrophobic effect, mechanical property, microscopic observation, chromatic alteration, and weathering resistance of the treated samples were systematically evaluated. MTES and OT-40 were the most effective in hydrophobic effect. Nano-SiO 2 contributed least to hardness improvement due to its lowest application amounts. Overall chromatic changes in the treated samples were below the detection limit of the naked human eye (ΔE * <3), except for the yellow sandstone treated with OT-40 and cyan sandstone treated with MTES. Microscopic observations revealed that the four agents provided better protection for grey sandstone, due to the smallest grain size and porosity of the gray sandstone. The four agents improved the salt weathering resistance of the three sandstones, except for the yellow sandstone treated with nano-SiO 2 , whose salt weathering resistance was reduced. Therefore, hydrophobic nano-SiO 2 may severely damage porous sandstone during salt weathering, due to the huge interfacial stress produced at the interaction between the hydrophobic superficial layer and the hydrophilic rock substrate. The anti-UV ageing stability relied mainly on the porosity and grain size of the substrates. Our research has advanced the fundamental understanding of the performance of novel protective materials, also paved the way for the conservation of sandstone heritages.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Jiao Yang,Wu Pei,Cheng Li,Yao Cheng
Given the flammability of epoxy resin (EP), enhancing its fire safety is crucial. Therefore, designing an additive flame retardant with highly effective flame-retardant properties is particularly important. This experiment designed three metal-modified P-N synergistic flame retardants (A–M–Mg, A–M–Cu, A–M–Zn), which were incorporated into EP at a fixed proportion (20 wt%) to prepare composite flame-retardant systems. After adding three different metal-modified flame retardants, the limiting oxygen index (LOI) of the EP increased from 21.0 to 29.6%, 28.8 and 27.2%. UL-94 flammability ratings achieved V-0, V-1 and V-2 classifications. This demonstrates that flame retardants modified with magnesium exhibit superior flame retardancy compared to those modified with copper and zinc. Compared to pure EP, testing with a cone calorimeter revealed reductions of 70.3, 72.7 and 67.2% in total heat release, peak heat release rate and total smoke volume. The reduction of pyrolysis products during combustion, combined with the selective catalytic effect of metallic magnesium and P-N synergistic flame retardancy, collectively promotes the formation of a dense and stable char layer. This significantly enhances the flame retardancy and safety of EP. Additionally, A–M–Mg exhibits good compatibility and strong interfacial interactions with EP, but its particle size and distribution adversely affect the mechanical properties of EP. In summary, this study provides a simple and effective strategy for preparing EP composites with outstanding flame-retardant properties, aiming to address fire safety concerns across various industrial sectors. Graphical abstract The alternative text for this image may have been generated using AI.
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Nature Communications
·
2026
·
IF 18.1
Li Xinwei,Zhang Xin,Zhan Changhong,Gan Tao,Wang Yuchao,Ma Shangyi,Huang Xiaoqing,Han Ali,Liu Gang
Sub-nanoclusters (sub-NCs) hold promise for the alkaline hydrogen oxidation reaction yet struggle with precise atomic dispersion and structural stability. Here, we report an ammonia-mediated electrostatic adsorption strategy that enables the synthesis of tunable paired metal-metal oxide sub-NCs, exemplified by Pt SA RuRh-MO x (SA represents single-atom sites, M = Cr, Mo, V, Ti, Ta, Zr). Electrostatic interactions between cationic PtRuRh δ+ and oxo-/fluoro-anions (e.g., CrO 4 2− , MoO 4 2- , VO 3 − , TiF 6 2- , TaF 7 2− and ZrF 6 2− ) control phase pairing during pyrolysis. The optimized Pt SA RuRh-CrO x demonstrates competitive mass activity (13.81 A mg −1 , 58-fold that of commercial Pt/C) and delivers a peak power density of 1.43 W cm −2 in an alkaline membrane fuel cell, with stable operation exceeding 200 h. In situ spectroscopy and simulations reveal that the synergistic Ru/Rh sites, electronically modulated by the paired CrO x , collectively optimize H*/OH* adsorption and weaken CO* binding. This work establishes a generalizable synthetic route for the precise construction of paired sub-NCs for advanced energy conversion applications.
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PubMed
高影响因子
NAUNYN-SCHMIEDEBERGS ARCHIVES OF PHARMACOLOGY
·
2026
·
IF 4
Morsy Wafaa A.,Heibashy Dina M. I.,Eissa Shimaa M.,Elshafiey Sara H.
Pulmonary fibrosis is a progressive and fatal lung disease characterized by excessive extracellular matrix deposition. Bleomycin (BLM)-induced pulmonary fibrosis is a widely used experimental model that replicates key pathological features of the human disease. Berberine (Brb), a natural phytochemical, exhibits anti-inflammatory and immunomodulatory properties. However, its clinical application is restricted by poor bioavailability. Nano-formulation of Brb (Nano-Brb) may enhance its therapeutic potential. Therefore, this study aimed to evaluate the protective effects of Nano-Brb against BLM-induced pulmonary fibrosis in rats and to elucidate the underlying biochemical, histopathological, immunohistochemical, and molecular mechanisms. Thirty adult male albino rats were randomly assigned into six groups: control, Brb-treated (100 mg/kg body weight), Nano-Brb-treated (100 mg/kg body weight), BLM-treated (single intratracheal dose of 5 mg/kg body weight), BLM + Brb, and BLM + Nano-Brb. Nano-Brb significantly attenuated BLM-induced pulmonary fibrosis, as evidenced by reduced pro-inflammatory cytokines, including interleukin-1β (IL-1β), interleukin-4 (IL-4), interleukin-13 (IL-13), and tumor necrosis factor-alpha (TNF-α), as well as decreased matrix metalloproteinases (MMPs). It also modulated nuclear factor kappa B (NF-κB) and transforming growth factor-beta (TGF-β) signaling and reduced collagen type I (Col-I) and collagen type III (Col-III), connective tissue growth factor (CTGF), and neutrophil elastase (NE). Histopathological, histochemical, and immunohistochemical investigations confirmed marked improvement in lung architecture. Furthermore, Nano-Brb reduced transforming growth factor-beta 1 (TGF-β1) expression and upregulated pulmonary sirtuin 3 (SIRT3) gene expression. The present results suggest that Nano-Brb enhanced the lung’s architecture and functional performance by modulating inflammatory cytokines, oxidative stress, gene expression, and histopathological damage. Graphical Created in https://BioRender.com . Schematic representation of the experimental design: rats were administered bleomycin to induce pulmonary fibrosis, followed by treatment with berberine or nano-berberine. The study assessed oxidative stress markers, inflammatory cytokines, histopathological and immunohistochemical changes, and gene expression related to fibrosis and inflammation. The nano-formulation demonstrated superior therapeutic efficacy.
The alternative text for this image may have been generated using AI.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 27
·19522-19536
·
IF 4.4
Zhang Xi-Hao,Liu Jie,Chen Lan,Zhou Zhigang,Deng Tian-Song
Combining gold nanostructures with cuprous oxide semiconductors can integrate the plasmon resonance effects of noble metals with the visible-light-responsive properties of semiconductors, offering a novel approach to enhancing photocatalytic performance. In this study, we employed Au nanocup as the core component—a nanomaterial featuring a three-dimensional asymmetric structure that exhibits remarkable localized surface plasmon resonance and high specific surface area. By varying the amount of copper precursor, we successfully synthesized a series of Au nanocup@Cu 2 O core–shell composites with different Cu 2 O shell thicknesses. The influence of shell thickness on the optical properties and photocatalytic performance was systematically investigated. In the photocatalytic degradation of methyl orange under visible-light irradiation, the optimized composite demonstrated significantly enhanced activity, with the degradation efficiency being more than 12 times higher than that of pure Au nanocup or pure Cu 2 O. The performance improvement is attributed to two main factors: the efficient transfer of plasmon resonance energy from the Au nanocup to the Cu 2 O shell, which promotes charge generation and separation, and the formation of a heterojunction interface that facilitates charge transport. This study provides new insights for designing efficient photocatalysts and shows promising potential for environmental remediation applications.
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Reaction Kinetics Mechanisms and Catalysis
·
2026
·
IF 2.1
Li Junlang,Yin Shaofeng,Chen Lixin,Chen Lei,Chen Yang,Xie TianTian,Wang Yingjie,Deng Xiaoting
This study aimed to investigate the regulatory mechanism of spinning solution composition on the structure and drug sustained-release behavior of inorganic–organic drug-loaded nanofiber membranes fabricated via emulsion electrospinning. By adjusting water content (0, 1, 1.5 g) and zeolite loading, nanofiber membranes with different porous structures were prepared. Results indicated that fiber morphology and release kinetics were significantly influenced by the spinning solution composition: Systems containing water (W 1 -Zeo@DS NFs, W 1.5 -Zeo@DS NFs) formed shallow surface pores due to the emulsion template effect, resulting in finer fiber diameters. The system without water (Zeo@DS NFs) formed deeper internal channels via solvent-induced phase separation, leading to larger fiber diameters. Based on comprehensive release profiles and cumulative release rates, W 1 -Zeo@DS NFs demonstrated the optimal sustained-release performance and the highest drug utilization efficiency (56.85%). This study demonstrates that synergistic regulation of water content and zeolite loading can effectively optimize the multi-level pore structure of fibers, enabling precise control over drug release behavior, thereby providing a reference for designing efficient composite sustained-release drug delivery systems.
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PLANT MOLECULAR BIOLOGY REPORTER
·
2026
·Vol. 44
·期 3
·99
·
IF 2
Tian Ge,Nan Lili,Yao Yuheng
Sainfoin ( Onobrychis viciaefolia ) is a native grass species in northwest China. Soil salinization is a significant factor that limits nutrient absorption, growth, and development. In this study, the new strain P1 (“1994” × “Gansu sainfoin”) and the salt-sensitive material “10,295” (SSM) were selected. The CK group and salt stress group (0.8% NaCl) were established to investigate the differences in related physiological indicators and metabolomics. The key enzyme activities and the contents of endogenous hormones in the leaves were determined using different methods. Metabolomic analysis was performed using liquid chromatography–mass spectrometry (LC-MS). The results demonstrated that salt stress significantly inhibited the growth and development of sainfoin. Four comparison pairs—“P1-NaCl vs P1-CK,” “SSM-NaCl vs SSM-CK,” “P1-CK vs SSM-CK,” and “P1-NaCl vs SSM-NaCl”—screened 94, 205, 71, and 105 metabolites under salt stress, respectively. The primary metabolites included organic acids and their derivatives, as well as organic oxygen compounds. After 6 days of salt stress treatment, the activities of phenylalanine ammonia-lyase (PAL), cinnamic 4-hydroxylase (C4H), and 4-coumarate coenzyme A ligase (4CL) in both sainfoin varieties increased significantly. In contrast, the contents of auxin (IAA), gibberellin (GA 3 ), and zeatin (ZT) decreased significantly, while abscisic acid (ABA) content increased significantly. Notably, the activities of PAL, C4H, and 4CL, along with the levels of IAA, GA 3 , ZT, and ABA, in “P1” were significantly higher than those in “SSM.” The results of this study provide a theoretical basis for the breeding and promotion of new salt-tolerant varieties of sainfoin.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 15
·1211
·
IF 3.2
Wang Zhiquan,Dong Chengang,Wang Xin
Resistive switching (RS) in oxide-based memristive devices is strongly affected by the stochastic formation and rupture of oxygen vacancies ( V o ) conductive filaments, which limits device-to-device uniformity, cycle-to-cycle stability, and overall reliability. To mitigate such randomness, HfO 2 thin films were prepared via a sol–gel route at different post-annealing temperatures, and Pt point defects or interlayer defects were further introduced. The synergistic effects of annealing temperature and Pt-related defects on RS characteristics were systematically evaluated. Electrical measurements reveal that HfO 2 films annealed at 500 °C exhibit the most desirable RS behavior and overall performance. At lower annealing temperatures, excessive organic residues and insufficient film densification suppress the formation of stable conductive filaments, resulting in weak switching behavior. In contrast, excessively high temperatures induce grain coarsening and grain boundary reduction, and may simultaneously generate excess V o , leading to degraded insulation (i.e., reduced high-resistance state (HRS)) and thus weakened RS performance. Furthermore, a moderate density of Pt point defects induces local electric-field distortion, which is believed to promote directional V o migration, and enhance filament formation reproducibility, thereby contributing to improved switching stability. However, when the defect density becomes too high (strong Pt aggregation or layer-like Pt intercalation), the film insulation is compromised, HRS resistance decreases, and RS performance deteriorates. In this study, the sample with 20 s Pt sputtering exhibited the optimal RS performance. Overall, rational design of artificial defect structures combined with appropriate thermal treatment can help suppress the stochastic nature of filament evolution and consequently improve switching stability and device reliability. These findings provide experimental guidance and mechanistic insight into defect-engineering strategies for highly stable RS memory devices.
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