Small
·
2025
·Vol. 21
·期 33
·2500838
·
IF 12.1
Hang Wang,Tianyu Wang,Yongjia Zheng,Shanhe Xue,Abid,Yige Zheng,Qingyun Lin,Afzal Khan,Qi Zhang,Rong Xiang
The recent development of 1D van der Waals (vdW) crystals enables the exploration of new physics and new designs in photonic and electronic devices. However, because of the large variation in the material library, synthesizing and understanding these 1D vdW crystals are still in an early stage compared to their 2D counterparts. Here, a chemical vapor transport (CVT) synthesis route is proposed to produce 1D WTe 2 vdW crystals with controlled small diameters ranging from 2 to 20 nm. These 1D crystals exhibit high crystallinity, high phase purity and strong anisotropic optical responses. We also systematically studied the stability of these materials in the ambient environment and observed that 1D WTe 2 vdW crystals undergo rapid oxidation within 10 min. The ambient-generated oxide layer on a 1D WTe 2 formed a natural WTe 2 /O-WTe 2 heterojunction, which gave rise to a negative photoconductive effect, resulting in two different transport properties in the temperature range of 40–300K. These findings shed light on the suppression of photoexcitation conductivity and offered a framework for studying other 1D vdW materials, particularly these interesting but less explored Te-group crystals.
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PubMed
高影响因子
Biomaterials Advances
·
2025
·
IF 6
Jianfei Bai,Chunyu Han,Yuqi Gao,Dezhou Wang,Shuang Yang,Guanliang Liu,Huichao Sun,Shengrui Gao,Wanzhong Yin,Wenzhi Song
Objectives This study developed a near-infrared (NIR) light-responsive shape-memory plant-based resin bone scaffold via ultraviolet-assisted direct ink writing (UV-DIW) to address limitations in existing acrylated epoxidized soybean oil (AESO) scaffolds, including mismatched glass transition temperature (Tg) with physiological conditions and reliance on external heat sources. Methods Polydopamine-modified hydroxyapatite (HA@PDA) particles were blended into liquid AESO to prepare four composite inks with HA@PDA mass fractions of 0 % (AESO), 5 % (A5), 10 % (A10), and 15 % (A15). Bone scaffolds were fabricated using UV-DIW technology at 0 °C. The scaffolds implanted in bone defects could achieve remote temperature regulation via NIR irradiation to induce deformation. Mechanical properties, thermal transitions, photothermal performance, shape-memory behavior, and osteogenic activity were systematically investigated. Results Increasing HA@PDA content significantly improved the scaffolds' printing accuracy, surface hydrophilicity , photothermal performance, shape-memory properties, and biocompatibility. A15 exhibited uncured resin during tensile tests and was excluded from subsequent analyses. The Tg values of AESO, A5, and A10 approached body temperature. A10 demonstrated optimal performance , achieving 40 °C within 4 min under 1 W/cm 2 NIR irradiation and a shape recovery rate of 97 % within 16 s. Significance A10 scaffold exhibited NIR-responsive shape memory properties, enabling minimally invasive implantation through compressed miniaturized configurations and precise shape recovery under targeted NIR irradiation, while retaining post-implantation dynamic reconfiguration capabilities through non-invasive NIR stimulation. The integrated design methodology combines patient-specific design with minimally invasive delivery and remote postoperative control, addressing the limitations of rigid static implants by enabling adaptable bone scaffolds for personalized tissue regeneration .
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CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 24
·41304-41311
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IF 5.6
Chunran Wu,Wei Li,Shijie Hao,Wen Dai,Lingni Yang,Jiawei She,Qing Zhang,Fenglin Wang,Xingyu Chen,Haijun Mao,Weijun Zhang,Hu Ye,Yujiu Zhou,Zhuofeng Liu
Polymer nanocomposites with high energy density hold great promise for the future miniaturization of dielectric capacitors in modern electronics. However, their performance is limited by the poor dispersion of inorganic fillers and severe interfacial electric field distortion. To address the above challenges, ultrathin two-dimensional (2D) BiOCl nanosheets are employed as the nanofiller for the first time, achieving excellent energy storage performance for the PMMA-based nanocomposites. Remarkably, the nanocomposite film with 0.5 wt% 2D BiOCl exhibits an outstanding energy storage density of 13.28 J/cm 3 and charge-discharge efficiency of 86.11 %, which is 108 % and 13.4 % higher than that of the pristine PMMA . Furthermore, the underlying enhancement mechanism is elucidated by finite element simulations. This work highlights the exceptional potential of 2D BiOCl as a novel nanofiller for designing high-performance polymer nanocomposites.
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Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 30
·24610-24618
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IF 9.5
Jia Chen,Yafei Liu,Chaoyan Ma,Hao Sun,Yaxin Wei,Ruifeng Wu,Aimin Chang,Bo Zhang
The structural stability and electrical stability of thermosensitive ceramics are critical to their use under high-temperature conditions. Nevertheless, achieving concurrent stabilization of crystallographic configurations and electrical characteristics at elevated temperatures remains a persistent challenge for rare earth tantalite thermosensitive ceramics. Herein, we propose a high-entropy strategy to design “localized alternating tension strain” by introducing a large number of different kinds of [REO8] in combination with the original distortion [TaO6] to stabilize the electrical properties of the rare earth tantalite material. The obtained (HoErTmYbLu)0.2TaO4 material demonstrates an intriguing self-compensation mechanism wherein the lattice distortion induced by the high-entropy configuration effectively counteracts inherent structural distortions arising from interconnected [TaO6] octahedral units. This synergistic distortion compensation engenders exceptional stability, as evidenced by a remarkably low relative standard deviation (RSD) of 0.0311 in resistance during 180 s continuous measurements. The material exhibits high temperature measurement sensitivity (B = 12 851 K) and superior thermoresistive consistency across an ultra-wide temperature range (673–1773 K), with resistivity–temperature dependence closely adhering to the Arrhenius equation (Pearson's r = 0.99819). After aging for 50 h, the aging coefficient begins to stabilize and only fluctuates within 3%. This investigation establishes a paradigm for developing high-performance thermosensitive ceramics through entropy-mediated structural stabilization.
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Materials Today Communications
·
2025
·
IF 4.5
Peilin Cao,Jiahua He,Cong Wang,Dejin Yan,Nai Lin,Ji’an Duan
The joint strength of ceramic/metal interfaces has become one of the major technical difficulties in the development of solid oxide fuel cells. Hence, a method to fabricate 3D cone structure arrays on the surface of yttria-stabilized zirconia (YSZ) and stainless steel (Crofer 22 APU) by femtosecond laser machining technique is proposed to improve its shear strength. Compared to the shear strength of flat substrate (5 MPa), the optimized strength (23.4 MPa) is 4.7 times that of the original strength. Increasing the sintering temperature from 200 °C to 350 °C enhances the mobility and sintering of Ag nanoparticles, leading to a denser Ag layer and consequently improving the interfacial connection strength. Cross-sectional analysis of the sintered joint reveals that the 3D cone structure forms a mechanical interlock with the Ag layer, enhancing the interfacial shear strength. A finite element analysis model is also established for revealing the shear stress distribution in the Ag layer with microstructure.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Chenglin An,Ting Xie,Guangxu Li,Jiangtao Wu,Xiaochun Wu,Wentao Jiang
While non-contact magnetic fields have been widely employed as stimuli for modulating magnetic, electric, and catalytic properties , their direct influence on gas sensing processes remains unexplored. The renaissance of multiferroics , whose surface electric polarization can be magnetically controlled via intrinsic magnetoelectric coupling effect, offers the possibility to manipulate gas sensing properties through magnetic field. Here, we investigated the effect of the external magnetic field on gas sensing performance using the most representative multiferroic material. Our experimental results demonstrate that the Bi 0.92 Dy 0.08 FeO 3 sensors exhibit a non-linear magnetic field-controlled acetone sensing performance. When the Bi 0.92 Dy 0.08 FeO 3 sensor is exposed to a 140 mT magnetic field, its gas response towards 100 ppm acetone rises from 12.7 to 20.3, reaching a 60 % increase. The response time decreases from 53 to 41 s, corresponding to a 113 % increase in reaction rate constant. These improvements are attributed to the magnetoelectric coupling effect, which induces surface uncompensated polarization and enhances domain conductivity, thereby promoting surface oxygen chemisorption and charge carrier transport. Our findings not only advance the fundamental understanding of magnetically tunable gas sensors but also broaden the potential applications of multiferroic materials.
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JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Jingyu Shan,Bingyu Tian,Yingying Yao,Mengyao Liu,Gaolu Fan,Weiwei Qi,Ping Wen,Rui Dong,Mingjin Fan
High-performance lubricants have always been an urgent need for high-end equipment lubrication and service stability. In this work, citric acid-based ester oils with different alkyl chain lengths were synthesized, and their physicochemical properties and tribological performance were compared with commercial ester oils (5750). The synthesized ester oil behaves the characteristics of green source, further also show strong adsorption and ultra-short running-in period during friction, as well as long-term lubrication stability in harsh environments. Structurally speaking, the longer carbon chains is more conducive to the improvement of lubricity, which may be related to the molecular orientation and interaction of ester oil molecules at the sliding asperity. In term of mechanism, the efficient adsorption of ester oil molecules, molecular self-assembly behavior and the formation of carbon layer are the key to the film formation on the metal sliding asperity, of course, which also shows a certain positive correlation with the molecular chain length. This work provides guidance for the molecular design strategy of high-performance ester oils.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Hui Yan,Weiwei Wang,Yue Ma,Yong Shang,Lingxiu Shu,Yun Wang,Yue Xu,Bo Wu,Xingang Ren,Xianliang Wu,Gang Wang
Thermally stable x Ba 5 Si 8 O 21 - (1- x ) Ba 2 Si 3 O 8 and x Ba 5 Si 8 O 21 - (1- x ) Ba 2 Si 3 O 8 - z wt% LiF ceramics were successfully synthesized via a conventional solid-state reaction method. In the x Ba 5 Si 8 O 21 - (1- x ) Ba 2 Si 3 O 8 (0.1 ≤ x ≤ 0.8) ceramics, only Ba 5 Si 8 O 21 and Ba 2 Si 3 O 8 phases coexisted, with their phase contents confirmed by the Rietveld refinements. The 0.4Ba 5 Si 8 O 21 -0.6Ba 2 Si 3 O 8 ceramic, composed of 40.98 wt% Ba 5 Si 8 O 21 and 59.02 wt% Ba 2 Si 3 O 8 phases, exhibited near-zero τ f and moderate Q × f values. The phase composition controlled the τ f and Q × f values of x Ba 5 Si 8 O 21 - (1- x ) Ba 2 Si 3 O 8 (0.1 ≤ x ≤ 0.8) ceramics. Moreover, the addition of 3 wt% LiF as a sintering aid reduced the sintering temperature of the 0.4Ba 5 Si 8 O 21 -0.6Ba 2 Si 3 O 8 ceramic to 875 °C, while no other secondary phases were detected in the 0.4Ba 5 Si 8 O 21 -0.6Ba 2 Si 3 O 8 - z wt% LiF ceramics. The 0.4Ba 5 Si 8 O 21 -0.6Ba 2 Si 3 O 8 -3 wt% LiF ceramic demonstrated a dense microstructure and favorable microwave dielectric properties ( ε r = 7.44, Q × f = 8293 GHz and τ f = 2.37 ppm/°C), highlighting its potential for low-temperature co-fired ceramic (LTCC) applications.
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Haitang Liao,Zhimin Li,Chuang Yu,Yuan Wang
The advent of solid-state lithium-ion batteries has made it possible to achieve high energy density and enhanced safety in energy storage systems. However, commercialization has been hindered by interfacial contact deterioration between lithium metal and the solid-state electrolyte, coupled with electron leakage issues. Interfacial issues fundamentally govern the battery's capability for stable and sustained energy conversion, while also determining the likelihood of lithium dendrite propagation and growth. Consequently, a lithiophilic-lithiophobic dual-functional SEI layer (LiF/AlF 3 ) is constructed from an AlF 3 -PVDF-HFP organic-inorganic composite interlayer in this research (named CPEA3). The LiF generated via in situ reaction between AlF 3 and metallic lithium, characterized by high electron insulation property and high interfacial energy toward lithium, effectively suppresses the nucleation and growth of lithium dendrites. Simultaneously, leveraging the high adhesion energy of AlF 3 to lithium effectively stabilizes interfacial contact during lithium stripping processes, thereby preventing delamination-induced interfacial polarization. Therefore, the improved Li symmetric cells demonstrate an ultrahigh critical current density (3.0 mA cm −2 ) and remarkable cycling stability exceeding 2,800 hours at 0.1 mA cm −2 . Notably, the Li|CPEA3/LLZGO/CPEA3|LiFePO 4 configuration demonstrates substantial long-term cycling stability with 95.1% capacity retention after 600 cycles at 0.5 C. This work provides an effect stagy to suppress side reactions at the electrode/electrolyte interface and impede lithium dendrite in solid-state battery penetration through the construction of an intermediate passivation layer.
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CARBON
·
2025
·
IF 11.6
Haonan Cui,Deyu Yang,Razium Ali Soomro,Peng Zhang,Bin Xu
Two-dimensional MXenes exhibit metallic conductivity, pseudo-capacitive mechanism, and robust film-forming capability, recognizing them as promising electrode materials for flexible energy storage devices. However, the use of MXene films in flexible devices is limited by their restricted ionic kinetics, incomplete active site exposure and mechanical strength. Herein, a MXene film electrode with remarkable flexibility, high mechanical strength, and enlarged interlayer spacing is constructed via Kevlar nanofibers intercalation. Systematic coupling allows Kevlar to operate as a bridge and intercalator between MXene flakes, considerably improving mechanical robustness while preventing restacking and increasing interlayer separation. Consequently, being used as electrode for supercapacitors, the MXene/Kevlar film with optimal 30 wt.% Kevlar exhibits high capacitances of 437.8 and 86.5 F g −1 at 1 and 1000 A g −1 in H 2 SO 4 electrolyte, respectively, along with stable cycle performance, retaining a capacity retention of 99.3 % after 10,000 cycles at 10 A g −1 . Moreover, the flexible quasi-solid-state symmetric supercapacitor delivers a maximum energy density of 10.7 Wh kg −1 at a power density of 39.5 W kg −1 , highlighting its potential for application in flexible energy storage devices.
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Journal of Energy Chemistry
·
2025
·
IF 14.9
Guomin Li,Lei Lei,Yanyi Wang,Hongwei Mi,Chuanxin He,Ning Zhao,Peixin Zhang,Dingtao Ma
To advance the application of layered oxide cathodes in fast-charging sodium-ion batteries, it is crucial to not only suppress irreversible phase transitions but also improve the rate capability of cathode materials and optimize Na + diffusion kinetics to ensure high capacity output at various charge-discharge rates. In this research, the targeted F-substitution with a heavy ratio in oxygen anion layer optimizes the Na + diffusion path and electronic conductivity of the material, thereby decreasing the Na + diffusion barrier and imparting high-rate performance. At a 20 C rate, the cathode achieves a capacity of over 80 mAh g −1 with stable cycling performance. Additionally, the dual rivet effect between the transition metal layer and oxygen layer prevents significant phase transitions during charge/discharge within the 2–4.2 V range for the modified cathode. As a result, the F-substituted oxygen anion layer improved Na + diffusion, electronic conductivity, and crystal plane structure stability, which led to the development of a high-performance, fast-charging sodium-ion battery (SIB), opening new avenues for commercial applications.
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JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
·
2025
·
IF 3.3
Li Junjie,Liu Kunyi,Kang Kaijie,Zhao Lina,Zhang Banglei,Li Lang,Huang Hai,Jiang Liwen
Fermented salt-free bamboo shoots, a traditional fermented vegetable product, are esteemed in southern China for their unique flavor and aroma. The distinctive taste of these shoots is attributed to the volatile organic compounds (VOCs) and organic acids produced during fermentation. This study explored how organic acids and VOCs change over a 60-day fermentation period. The findings revealed notable variations in pH, total sugars, and organic acids throughout the process. Utilizing GC-IMS (gas chromatography-mass spectrometry) analysis, 65 volatile organic compounds (VOCs) were detected, which comprised alcohols, aldehydes, esters, ketones, and aromatic compounds. The concentration and composition of VOCs changed significantly during the fermentation process. Esters and aldehydes were the predominant VOCs. The changes in organic acids levels were correlated with the production of specific VOCs, indicating complex interactions between organic acids and VOCs during the fermentation process. Employing correlation analysis and OPLS-DA (orthogonal partial least squares discriminant analysis), we identified 14 pivotal volatile organic compounds (VOCs) and organic acids that exert the most significant influence on the flavor profile of fermented salt-free bamboo shoots. This study provides invaluable insights for enhancing both the processing and economic potential of bamboo shoots.
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危险品化学品经营许可证（带存储）