MATERIALS CHARACTERIZATION
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2026
·
IF 6.2
Ehsan Ghasali,Hamidreza Ghadami Karder,Congya Zhu,Ayesha Sadiqa,Li Jie,Yasin Orooji
Novel Dy₂Ho₂Er₂Tm₂Yb₂O₁₅ high-entropy oxide successfully synthesized via conventional sintering. • Single-phase cubic bixbyite structure (Ia-3) formed across all sintering conditions. • Higher sintering time/temperature promoted grain growth, strain relaxation and homogeneity. • Bandgap narrowed to 4.45 eV due to high-entropy induced lattice distortion. characters). • Promising photoluminescence properties indicating potential photocatalytic activity. A bixbyite-structured rare-earth high-entropy oxide with the composition Yb₂Tm₂Er₂Dy₂Ho₂O₁₅ was synthesized by a conventional compaction–sintering route. The effects of sintering temperature and time on phase formation, microstructure, chemical homogeneity, and optical properties were systematically investigated. XRD confirmed the formation of a cubic bixbyite structure with the space group , while Williamson–Hall analysis indicated improved crystallinity and strain relaxation with increasing sintering severity. SEM/TEM observations and EDS mapping revealed progressive grain growth, densification, and homogeneous distribution of the constituent rare-earth elements. XPS results confirmed the predominance of trivalent rare-earth cations and a stable oxygen environment, with no major chemical-state changes after sintering. UV–Vis analysis showed a band gap of 4.45 eV, which is lower than those of the individual constituent oxides, suggesting that lattice distortion and compositional complexity influence the electronic structure. PL results further indicated reduced electron–hole recombination in the UV region. Overall, the results demonstrate that conventional compaction and sintering can produce chemically homogeneous bixbyite-type rare-earth HEOs with tunable microstructural and optical characteristics.
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Materials
·
2026
·Vol. 19
·期 14
·2977
·
IF 3.7
Anjie Qi,Yunjia Liang,Bingjie Ge,Guodong Jiang,Shanglin Xiang,Dongyu Cai
HighlightsDeveloped a self-catalytic water/castor oil system for PET depolymerization.Achieved spontaneous precipitation of oligoesters without cooling crystallization.Upcycled the oligoesters into polyurethane adhesives with high peel strength.This study presents a green approach for polyethylene terephthalate (PET) upcycling using a biphasic system of subcritical water and castor oil. This system enables efficient conversion without an external catalyst and facilitates product separation. Hydrolysis of castor oil generates fatty acids in situ, which catalyze PET conversion to selectively produce low-molecular-weight oligoesters (Mn ≈ 1500 g/mol). These oligoesters are inherently immiscible with the bio-medium at room temperature, allowing straightforward separation by centrifugation. Orthogonal experiments show that temperature is the dominant factor affecting PET conversion, with the optimal conditions being 200 °C, a water-to-oil mass ratio of 1:5, and a reaction time of 10 h for complete conversion. Under the practical optimum condition, the castor oil phase remained highly effective over five consecutive depolymerization cycles. The functionalized oligoesters were used in polyurethane synthesis. At 6% loading, they gave adhesives with a T-peel strength of 8.09 N/15 mm and tensile strength of 25.14 MPa, and excellent damp-heat stability (only 0.62% loss in T-peel and 0.47% in 180° peel after aging). Thermogravimetric analysis confirmed enhanced thermal stability, with increases of 19.52 °C in T5%and 16.50 °C in T50%compared with the unmodified system. These results demonstrate the practical potential of the obtained oligoesters in high value adhesive applications.
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PubMed
高影响因子
JOURNAL OF LUMINESCENCE
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2026
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IF 3.8
Xiao Cheng,Hao Zhang,Zixu Chen,Haozhuo Dong,Ting Yu,Ruifang Guan
Room-temperature phosphorescent carbon dots (RTP-CDs) exhibit exceptional biocompatibility and tunable luminescence but are limited by short lifetimes and exciton quenching. Herein, we develop a one-step pyrolysis strategy using m-phenylenediamine and boric acid to fabricate boron-doped RTP-CDs (M-CDs) with ultralong green afterglow (16 s) and extended lifetime (37.03 ms). The rigid polycrystalline boron oxide matrix effectively confines molecular motion, isolates quenchers, and stabilizes triplet excitons, while boron doping reduces the singlet-triplet energy gap (ΔE ST = 0.206 eV) to promote intersystem crossing (ISC). Further heavy-atom doping (Cl/Br) enhances spin-orbit coupling, boosting afterglow to 18 s and lifetime to 41.16 ms, whereas iodine disrupts the matrix. Leveraging tunable afterglow dynamics, we demonstrate dynamic information encryption with visible/UV-switchable patterns. This work provides a cost-effective route to high-performance RTP-CDs and clarifies synergistic regulation mechanisms for advanced optoelectronic applications.
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 7
·e70972
·
IF 4.2
Ding-shun She,Shao-rong Bie,Yantao Gong
Laser ablation of diamond involves coupled thermal and chemical processes sensitive to intrinsic defects and ambient environments. Here, the color-dependent ablation behavior of diamonds is systematically investigated under nitrogen, air, and oxygen atmospheres. Ablation efficiency increases from colorless to black diamonds, attributed to enhanced laser absorption and localized thermal accumulation induced by higher defect densities. Meanwhile, atmospheric conditions regulate carbon transformation pathways. Raman results show a decrease in the ID/IG ratio from nitrogen to oxygen, indicating suppressed accumulation of disordered sp 2 carbon in oxidative environments. In contrast, XPS reveals increased C═C bonding and oxygen-containing functional groups with higher oxygen content. This discrepancy arises because Raman and XPS probe structural disorder and chemical composition, respectively. A competitive mechanism is proposed, where graphitization dominates in inert atmospheres, while oxidation removes unstable carbon and promotes surface reconstruction in oxygen-rich environments.
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高影响因子
Carbon Neutralization
·
2026
·Vol. 5
·期 4
·e70190
·
IF 21.5
Qianwang Ye,Hanqing Dai,Zhile Han,Guoqi Zhang,Fei Han,Wanlu Zhang,Ruiqian Guo
We report a bioinspired, transparent green plant-like window that integrates passive cooling, thermal insulation, and solar-driven waste heat recovery to reduce building energy consumption. By mimicking leaf transpiration, the system uses a carbon quantum dot-doped CPPB hydrogel to achieve high visible transmittance (~92%) while blocking UV and NIR radiation. A self-powered water circulation layer repurposes solar heat for domestic water heating. Outdoor field tests and 168-h solar simulator exposure confirm long-term thermal stability and cooling up to 21.9°C. Simulations across 30 global cities show annual cooling energy savings up to 569.1 MJ/m 2 . This scalable, multifunctional window offers a sustainable path toward net-zero energy buildings.
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高影响因子
EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY
·
2026
·Vol. 128
·期 9
·e70142
·
IF 2.4
Yunping Yao,Zehui Zhang,Bingxin Li,Changmo Li
Accurate qualitative and quantitative determination of free radicals during lipid oxidation, which is the core process of edible oil quality deterioration and essentially a free radical chain reaction, is of crucial importance. To overcome this problem, we developed and validated an analytical method for the specific characterization of key radicals in lipid oxidation. These radicals (R•, RO•, and ROO•) were trapped using N-tert -butyl-α-phenylnitrone under iron-mediated conditions, leading to the formation of stable adducts that were subsequently analyzed by LC–MS/MS–IT–TOF. This method offers good sensitivity with low limits of detection (0.06–0.15 µM) and limits of quantification (0.20–0.50 µM). Density functional theory calculations further confirm that the reaction proceeds readily and yields thermodynamically stable products. When applied to the methyl linoleate oxidation system, the method demonstrated that methyl linoleate alkyl radical (L•) predominated during oxidation, with its concentration peaking at 3.74 × 10 −2 mM (accounting for up to 70% of radicals) at 4 h followed by a decline due to chain termination reactions, whereas methyl linoleate peroxyl radicals (LOO•) concentration stabilized as oxidation progressed (1.46 × 10 −2 mM, 27% of radicals), and methyl linoleate alkoxyl radicals (LO•) remained at a consistently low concentration (1.58 × 10 −3 mM) owing to its preferential conversion via the β-scission pathway. These results were consistent with electron spin resonance (ESR) data, thereby validating the method's reliability. Consequently, this method enables the precise monitoring of lipid oxidation processes, serving as a valuable tool for assessing antioxidant efficacy in lipid science. Practical Applications : We present an analytical method integrating N-tert -butyl-α-phenylnitrone (PBN)-based spin trapping with LC–MS/MS–IT–TOF for direct tracking of key lipid radicals (L•, LO•, and LOO•) throughout the lipid oxidation process. This method addresses a long-standing technical gap in lipid oxidation research, providing a robust, practical tool for both high-throughput screening of high-efficacy antioxidants and rational design of stable lipid-containing food formulations. By bridging fundamental analysis and product development, our technique has clear real-world implications for extending the shelf life of lipid-based foods, offering significant value to food chemistry research while delivering substantial economic and sustainability benefits to the global food industry.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Jiehao Qu,Jicheng Li,Guang Yang,Nianzhao Gao,Xiangdong Liu
Poly(methyl methacrylate) (PMMA) possesses high optical transparency but suffers from insufficient mechanical strength. Most toughening methods compromise optical clarity, processability, or industrial scalability. Herein, we present a scalable toughening strategy based on copolymerization of methyl methacrylate (MMA) with 2-hydroxyethyl methacrylate (HEMA), combined with transesterification between their units. The resulting random MMA-co-HEMA copolymers retain excellent visible-light transmittance (above 90.0%, 5 mm) while achieving remarkable mechanical enhancements, including increases of 74% in tensile strength and 22% in impact strength compared with linear PMMA. Further studies reveal that the transesterification between HEMA and MMA units induces a lightly cross-linked network. This approach not only offers advantages in simplicity, cost-effectiveness, and compatibility with industrial processes such as casting molding, but also effectively prevents uncontrollable autoacceleration during bulk polymerization. These findings provide new insights for the designing of high-performance optical thermoplastics with promising potential in structural optical applications.
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高影响因子
COMPOSITES PART B-ENGINEERING
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2026
·
IF 14
Qi Yan,Biao Chen,Jinglun Yang,Qiang Gao,Xinyi Zhou,Jinshan Li,Wen Feng Lu,Wai Sze Yip,Hao Wang,Suet To
Loss of toughness in titanium matrix composites (TMCs) is often inevitable, as strength enhancement typically comes at the expense of ductility, especially for brittle ceramic reinforcements induced by interfacial chemical reaction. To fully exploit the strengthening potential of nanocarbons in TMCs and maintain ductility, it is critical to mitigate the in-situ reactions between nanocarbons and titanium. This study proposes an inspired strategy by reinforcing Ti–6Al–4V (Ti64) matrix with graphene oxide (GO) decorated with Fe 3 O 4 nanocrystals (Fe 3 O 4 @GO/Ti64). This design achieves 41.6% improvement in toughness, with simultaneously enhanced strength and elongation, compared to that of Ti64 alloy. Uniform Fe 3 O 4 coatings ( ∼ 20 nm) were distributed on the GO surface and subsequently consumed during consolidation via reaction with the Ti matrix, thereby preserving GO. Microstructural analysis of plastic deformation revealed that elongation was primarily attributed to the dislocation slip bands, grain boundary sliding and twins, while the in-situ TiC inhibited slip-band motion. The estimated strengthening factors illustrated that solid-solution strengthening dominated the enhanced strength in all composites. Furthermore, the Fe 3 O 4 @GO/Ti64 composites exhibited significantly enhanced load transfer effects compared with GO/Ti64, due to the Fe 3 O 4 modificative coatings. These findings underscore the crucial role of interfacial decoration and solid-solution mechanisms in improving the overall mechanical performance of the TMCs, while also highlighting their economic and environmental potential in lightweight metallic design.
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高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Xuyao Zhou,Yiqin Guo,Zhenyu Chen,Kaitian Yu,Chengyu Yang,Kaixuan Lin,Weiting Chen,Xuan Liu,Penglin Lyu,Tingli Hu,Yuzhi Qin,Yupeng Guo,Wenqi Han,Zuping Lyu,Mingming Rong,Bo Fang,Xiongjian Huang,Jiulin Gan,Qianyi Guo,Zhongmin Yang
Flexible photonic fibers enable precise, interference-free multimodal tactile sensing in wearable interfaces, owing to their intrinsic immunity to electromagnetic interference and cross-modal coupling, together with rapid response. Until now, optical fibers that simultaneously exhibit mechanical robustness, signal decoupling, and environmental stability remain scarce, and system-level integration is even rarer. Inspired by the distributed sensory arrangement of jellyfish tentacles, we propose a photonic skin composed of coaxially structured hydrogel optical fibers, in which pressure and temperature signals are routed through independent photonic and ionic channels for interference-free multimodal sensing. The stretchable, highly reproducible, refractive-index-matched core-cladding photonic fiber was constructed by continuous coaxial spinning with in situ photopolymerization. It resolves the long-standing trade-off between mechanical stretchability, low-loss optical guiding, and temperature/humidity robustness in hydrogel fibers. The assembled sensing skin achieves high pressure and temperature sensitivity with a sub-10-ms response, surpassing existing benchmarks. It integrates with a lightweight, flexible printed circuit and multimodal tactile fusion machine-learning architecture to form a wearable system, enabling wireless control, adaptive gesture recognition (99.21% accuracy), and multimodal object classification (99.22% accuracy). This work presents a fully integrated photonic skin platform bridging material-level signal decoupling and system-level multimodal perception for intelligent tactile interfaces in complex environments.
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高影响因子
Advanced Composites and Hybrid Materials
·
2026
·
IF 15.5
Bai Tian,Qin Xionghai,Wu Zhenguo,Su Junjie,Li Lin,Yao Hang,Niu Zhaoxuan,Yue Chengbin,Wang Dong,Yue Yiying,Cheng Wanli,Zeng Chengjun,Zhao Wei,Han Guangping
Commercial airway stents often slip and deform, leading to severe complications such as mucosal injury, granulation tissue formation, and stent migration, which can cause recurrent airway obstruction and necessitate repeated interventions. Here, we introduce a 3D-printed tracheal stent composed of continuous bamboo fiber reinforced shape memory polylactic acid (BF/SMP). These naturally derived fibers (tensile strength ~ 1.90 GPa, modulus ~ 91.30 GPa) exhibit excellent mechanical resilience. Following an instantaneous thermal treatment, their interfacial compatibility with SMP is notably improved. The 30% BF/SMP stent can undergo over 1,000 three-point bending cycles under a 20 N load, with a bending deflection of 30.85%. In vitro, it promotes bronchial epithelial cell proliferation. Preliminary animal studies suggest that the biomass-based stent provides airway support without causing significant inflammation or organ abnormalities. Overall, this work demonstrates a biomass-reinforced, thermally deployable airway stent concept and provides a foundation for future studies on catheter-compatible delivery and long-term in vivo performance.
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高影响因子
FUEL
·
2026
·
IF 7.8
Jian Wang,Yu Zhao,Tianhua Yang,Xinyong Diao,Yao Tong,Shuang Cui,Bingshuo Li,Rundong Li
Guaiacol, an important lignin-derived compound, presents a central challenge in the efficient upgrading of biomass into sustainable biofuels. Conventional conversion processes are often limited by dependence on corrosive acids, noble metals, or external hydrogen sources, leading to increased costs and safety concerns. In this study, we developed a hydrothermal conversion method that enables guaiacol to catechol transformation without the need for external hydrogen or inorganic acids. This was accomplished using transition-metal-based n Ni– y MoO x /Nb 2 O 5 catalysts capable of cleaving C–O bonds. The results showed that the Ni/MoO x ratio was critical in governing the formation of the NiMoO 4 spinel phase while inducing a strong metal–support interaction (SMSI) that directly affected the surface acidity and oxygen vacancy concentration. Using the 5Ni-5MoO x /Nb 2 O 5 catalyst (Ni/Mo = 1:1) at 300 °C for 2 h, 26.15% guaiacol conversion was achieved, with catechol selectivity 12.9-fold higher than in the noncatalytic system. This superior performance originated from a synergistic effect between the moderate acid strength and the high concentration of defective oxygen vacancies, which collectively drove the selective cleavage of the O–CH 3 bond. The produced catechol serves as a pivotal platform intermediate for synthesizing renewable fuel additives and advanced biofuel components. This study presents a sustainable catalyst design strategy for converting lignin resources into valuable biofuel precursors.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Decheng Peng,Jun Yang,Xinyuan Wang,Shaogui Wu
To achieve highly sensitive and selective detection of ferric ions (Fe 3+ ), a dual-channel fluorescent sensing platform based on carbon dots (BV-CDs) was developed, enabling both quantitative fluorescence analysis and visual recognition. The BV-CDs prepared via a one-step hydrothermal method exhibited excellent optical properties, with a quantum yield of 25.6% in N , N -dimethylformamide (DMF). Fe 3+ can specifically quench the fluorescence of BV-CDs, and the response is not disturbed in the presence of a variety of coexisting metal ions and amino acids. At the same time, the system can realize Fe 3+ visual recognition through color change, and a smart phone sensor platform is constructed. In addition, the fluorescence response of the system is stable in the range of pH 2–11, and the fluorescence is restored at pH 12, forming an ‘on-off-on ‘regulation mode. Quantitative analysis showed a good linear correlation between the fluorescence intensity ratio and Fe 3+ concentration within the range of 0–150 μM, with a detection limit of 0.17 μM. For real water samples, the method achieved recoveries of 93.9–104.3% with relative standard deviations (RSDs) below 2.04%, confirming its accuracy and reliability. This study provides a simple and efficient strategy for rapid and sensitive Fe 3+ detection.
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高影响因子
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