Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·361
·
IF 38.5
Yan Chenxi,Liu Xing,He Xuanlong,Han Junjie,He Longjun,Tian Na,Wang Yanyi,Li Qiang,Zhao Ning,Zhang Lipeng,Zhang Peixin,Ma Dingtao
In situ electrochemically induced surface oxygen vacancies (OVs) by Li 2 C 4 O 4 decomposition enable dual regulation of cathode electrolyte interphase (CEI) thickness and composition, a novel strategy for tailored CEI engineering in Li ion batteries.
For the first time, 18 O isotope labeling combined with TOF SIMS directly verifies that lattice oxygen of LiCoO 2 (LCO) serves as the predominant oxygen source for Li x PO y F z in CEI, clarifying the long debated LiPF 6 decomposition mechanism at the cathode inte rface.
The OV mediated strategy endows LCO with 71.1% capacity retention after 600 cycles at 1 C (3–4.4 V) (vs. 23.9% for bare LCO) and achieves universal applicability in 4.5 V high voltage systems and NCM811 cathodes, establishing a new design principle for stable high performance cathodes.
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高影响因子
CATALYSIS LETTERS
·
2026
·Vol. 156
·期 6
·155
·
IF 2.5
Hu Xinhui,Quan Yanhong,Li Haidong,Ren Jun
CO 2 activation represents a pivotal step in the CO 2 cycloaddition reaction with propylene oxide (PO) to form propylene carbonate (PC). This study prepared a chlorine-functionalized strongly alkaline polystyrene (CPS) catalyst via copolymerization and a TEAB/SiO 2 catalyst via silane coupling for CO 2 cycloaddition reactions. The CPS catalyst achieves nearly complete PO conversion (99.8%) with high selectivity (99.6%) towards PC and maintains a PC yield > 94% even after 10 reaction cycles. In contrast, the TEAB/SiO 2 exhibits rapid deactivation, with the PC yield declining from 66.8% to 5.1% after three cycles. Dynamically, the CPS catalyst exhibited a marked reduction in activation energy (20.1 kJ·mol −1 ) compared to TEAB/SiO 2 (32.9 kJ·mol −1 ), corroborating CO 2 activation through covalently anchored quaternary ammonium groups, which benefited from the higher alkalinity (2.65 mmol·g −1 ). Moreover, the outstanding stability of the CPS catalyst arises from the robust crosslinked framework of polystyrene and divinylbenzene. This work provides a strategic approach for designing alkaline catalysts and establishes a novel pathway to develop high-performance alternatives to ionic liquids for CO 2 activation in the cycloaddition reaction between CO 2 and PO. Graphical The alternative text for this image may have been generated using AI.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 23
·16510-16522
·
IF 4.4
Hu Zhenwei,Du Pengcheng,Zhang Yong,Wang Yadong
The uncontrollable growth of lithium (Li) dendrites severely hampers the commercialization of lithium metal batteries (LMBs). Herein, a highly integrated PP/SnO 2 /PP sandwich-structured separator was designed and fabricated. Utilizing an innovative solvent-induced bonding and hot-pressing process, lithiophilic SnO 2 nanoparticles were precisely anchored within a dual-layer polypropylene framework. Morphological and chemical characterizations (SEM, XPS, and EDS) confirmed the uniform distribution and intimate interfacial contact of the modification layer. Electrochemical measurements demonstrated that the sandwich separator enables exceptionally high Coulombic efficiency at a current density of 1 mA cm −2 and imparts superior cycling stability to LFP||Li cells. Mechanistic investigations reveal that the SnO 2 interlayer functions not merely as a physical barrier but, more importantly, as a ‘‘electrochemical trap.’’ Upon contact with the interlayer, Li dendrites trigger an in situ ‘‘micro-cell reaction,’’ which proactively eliminates dendrite tips via electrochemical ablation. This strategic shift from ‘‘passive blocking’’ to ‘‘proactive elimination’’ offers a novel perspective for designing high-safety lithium metal batteries. Graphical abstract Schematic diagram of the mechanism for an electrochemical trapping device used to actively eliminate lithium dendrites. The alternative text for this image may have been generated using AI.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 22
·15756-15772
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IF 4.4
Hu Jinming,Gao Yuxin,Jiang Yanfeng,Zhao Xinglong,Liu Lijia,Wang Yudan,Wang Guan,Wang Chao,Zhang Chunhong,Yang Guoxing
Polyhedral oligomeric silsesquioxane (POSS) combines the advantages of inorganic nanoparticles and organic flexible segments, enabling the enhancement of the comprehensive properties of epoxy resins. POSS grafted with organic groups can serve as a good toughening curing agent for epoxy resins. In this paper, D/A (polyetheramine D230/aniline) series and D/B (polyetheramine D230/n-butylamine) series co-grafted POSS toughening curing agents were prepared. A series of epoxy resins cured with different curing agents were further prepared. The influence of the structure of grafted small molecule amine and the ratio of polyetheramine/small molecule amine on the properties of cured epoxy resins was discussed. The research results indicated that cured epoxy resins exhibited excellent properties. The toughening effect of curing agent D/A4/OP is the best. Compared to epoxy resins cured with polyetheramine D230, the impact strength maximum increased from 46.3 to 78.2 kJ m⁻ 2 , an increase of 68.9%; the fracture toughness maximum increased from 15 to 24.8 kPa m 1 / 2 , an increase of 65.3%. The toughening curing agents combine the advantages of rigid POSS and flexible polyetheramine. By regulating the side chain structure, distribution, and grafting amount of grafted POSS, the toughness of epoxy resins has been significantly improved. This is due to the synergistic toughening effect of the three-dimensionally distributed flexible polyether segments and the rigid POSS particle structure within the co-grafted POSS. The epoxy resins cured with the toughening curing agents have great potential and applicability, with broad application prospects. Graphical The alternative text for this image may have been generated using AI.
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Discover Materials
·
2026
·Vol. 6
·期 1
·152
·
IF 5.8
Kumar Ashwini,Gong Yong,Cui Jin,Qiu Fujun,Zhang Yong,Pu Xingyu,Sharma Poorva
A novel biphasic Dy 2 Hf 2 O 7 -HfO 2 composite was synthesized via a solid-state reaction route for potential thermal barrier coating (TBC) applications. X-ray diffraction confirmed that the reaction between Dy 2 O 3 and HfO 2 at 1500 °C yields a dense composite comprising ∼81 wt% cubic pyrochlore Dy 2 Hf 2 O 7 and ∼19 wt% cubic fluorite HfO 2 . Microstructural analysis revealed a hierarchical architecture of nanoscale crystallites (25–34 nm for Dy 2 Hf 2 O 7 and ~ 13 nm for HfO 2 ) agglomerated into faceted microparticles (~ 1.1 μm). Williamson-Hall analysis indicated significant lattice strain within the Dy 2 Hf 2 O 7 phase due to its complex pyrochlore framework and cation-size mismatch, whereas HfO 2 remained nearly strain-free. The thermophysical properties of Dy 2 Hf 2 O 7 –HfO 2 composites were studied from room temperature to 1200 °C. The thermal expansion coefficient increased from 7.6 × 10 − 6 K − 1 to 9.2 × 10 − 6 K − 1 between room temperature and 1200 °C, while thermal diffusivity and conductivity decreased due to enhanced phonon–phonon scattering and interfacial disorder. The specific heat capacity rose from 0.35 to 0.50 Jg −1 K − 1 , consistent with Debye behavior approaching the Dulong-Petit limit. The composite’s low thermal conductivity (~ 1.3 W/mK at 1200 °C) and moderate thermal expansion, indicating its excellent thermal stability and suitability for high-temperature insulation and thermal barrier coating applications.
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Journal of Food Measurement and Characterization
·
2026
·
IF 3.6
Wan Jiahao,Wang Yanbin,Deng Wenhui,Liu Caijun,Liu Menglong,Luo Denglin,Zhang Kangyi,Gao Haiyan,Bai Zhouya
Fluorescent labeling of long-chain inulin (FXL) is essential for tracking its spatiotemporal dynamics in gastrointestinal systems, yet conventional methods risk altering its native properties. This study systematically compared three labeling strategies: FITC-DB (dibutyltin dilaurate-catalyzed hydroxyl conjugation), FITC-RA (reductive amination), and FA (fluoresceinamine coupling). Multimodal characterization revealed that FITC-DB achieved the highest substitution degree (DS = 0.42 at 50 mg FITC), though fluorescence quenching occurred at elevated loadings. FITC-RA induced significant aggregation (peak size at 50 mg), while FA labeling exhibited minimal structural perturbation but low efficiency (DS < 0.20). Spectroscopic analyses confirmed covalent thiourea bond formation (1720 cm⁻¹ FTIR peak) and aggregation-dependent optical shifts. Crucially, FITC-DB at 50 mg balanced optimal labeling efficiency, colloidal stability (highest zeta potential), and preserved macromolecular architecture. These findings establish design principles for high-fidelity FXL probes in biological tracking applications.
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高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2026
·
IF 4.6
Shi Xiao-Jiao,Zhang Yu-Bin,Li Na,Qiao Yu-Xuan,Liang Ya,Yu Gong-Kuo,Su Ai-Hong,Song Ze-Cheng,Song Dan-Dan,Jiao Ti-Feng,Qin Zhi-Hui
The rapid advancement of wearable sensors necessitates ionically conductive hydrogels that simultaneously exhibit high stretchability, damage tolerance, and reliable adhesion. However, achieving these properties in a single material remains a significant challenge. Herein, we report an ionically conductive polyoxometalate (POM)-based hydrogel (PAA/L-arg@SIW) fabricated by incorporating L-arginine (L-arg)-modified silicotungstic acid nanocomplexes (L-arg@SIW) into a poly(acrylic acid) (PAA) network as a multifunctional dynamic crosslinker. Strong electrostatic interactions and hydrogen bonding between rigid L-arg@SIW nanoclusters and flexible PAA chains generate a three-dimensional hard-soft synergistic network, in which dynamic crosslinks preferentially rupture and re-form under mechanical loading, thereby dissipating energy and suppressing crack propagation. Consequently, the hydrogel exhibits exceptional stretchability (fracture strain >1500%), high toughness (1483 kJ/m 3 ), outstanding crack resistance (fracture energy up to 6.82 kJ/m 2 ), and high ionic conductivity (0.15 S/m), along with robust adhesion to diverse substrates. Hydrogel-based sensors demonstrate high strain sensitivity (gauge factor (GF)=8.06), fast response, and excellent cyclic stability, enabling reliable monitoring of human motion and high-fidelity acquisition of electrocardiogram (ECG) and electromyogram (EMG) signals. This study presents an effective strategy for constructing high-performance ionically conductive hydrogels for wearable sensing applications. The alternative text for this image may have been generated using AI.
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Cancer Nanotechnology
·
2026
·
IF 5.8
Ren Jinxiao,Li Shiping,Shen Juping
Ferroptosis is an iron-dependent form of regulated cell death driven by excessive lipid peroxidation and reactive oxygen species (ROS) accumulation. Herein, we report a novel metal-coordinated nanoparticle system (OFe-NPs) fabricated via a one-pot self-assembly between orlistat and FeCl 3 ·6 H₂O for ferroptosis-based tumor therapy. The optimized OFe-NPs exhibited uniform nanoscale size and good colloidal stability under physiological conditions. In MCF-7 breast cancer cells, OFe-NPs showed significantly enhanced cytotoxicity compared with free orlistat, which was attributed to glutathione (GSH)-responsive disassembly and intracellular release of Fe ions and orlistat. Mechanistic investigations revealed that OFe-NPs effectively induced ferroptosis, as evidenced by increased lipid peroxidation, intracellular Fe 2+ accumulation, glutathione depletion, malondialdehyde elevation, and marked downregulation of GPX4. In an MCF-7 xenograft mouse model, OFe-NPs treatment significantly suppressed tumor growth, achieving a tumor inhibition rate of 76.76% with no evident systemic toxicity. These findings demonstrate that metal-coordinated orlistat–Fe(III) nanoparticles synergistically amplify ferroptosis via simultaneous iron-mediated oxidative stress and GPX4 suppression, offering a promising strategy for cancer therapy.
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高影响因子
POLYMER BULLETIN
·
2026
·Vol. 83
·期 7
·368
·
IF 4.2
Yang Zhenghui,Guo Haiquan
The rapid development of cover sheets and backplanes in flexible active matrix organic light emitting diode (AMOLED) displays has intensified the demand for colorless polyimide (CPI) films with superior optical transparency, remarkable dimensional stability and great thermal resistance. In this study, three semi-alicyclic dianhydride monomers (HAMDA, HIMDA, TCDA) were successfully fabricated, followed by the separate polymerization with 2,2’-bis(trifluoromethyl)benzidine (TFDB) and trans-1,4-diaminocyclohexane (t-CHDA) to afford a series of colorless polyimide films. In terms of overall performance, TCDA/t-CHDA outperformed all other as-synthesized CPI films, featuring an excellent optical transmittance of 88% at 550 nm, a low haze value of 0.98 and a modest yellowness index at 2.95, alongside a reduced CTE of 17.7 ppm K − 1 and an elevated T g value of 334 ℃. Besides, TCDA/t-CHDA exhibited a robust tensile strength of 109 MPa and a remarkable elongation at break of 24%. The best overall performance of TCDA/t-CHDA was primarily attributed to the incorporation of the linear and rigid alicyclic structure as well as the formation of hydrogen bond originating from amide groups. The findings in this study provide valuable guidance for the design and fabrication of advanced colorless polyimide films targeting high-end applications.
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高影响因子
Food and Bioprocess Technology
·
2026
·Vol. 19
·期 6
·299
·
IF 5.6
Li Huina,Wang Guangxian,Wang Songlei,Xia Hongqiang,Lu Yuzhe,Tian Tian,Luo Yulong,Zheng Hao-Bo
This study describes the development of a biodegradable colorimetric membrane by co-pigmenting Lycium ruthenicum anthocyanins (LRA) with catechins, and loading the stabilised complex onto MIL-88B(Fe) dispersed in a chitosan/polyvinyl alcohol (PVA) matrix. Molecular docking simulations revealed favorable non-covalent interactions, primarily hydrogen bonding and π-π stacking, between the anthocyanin and the MIL-88B framework, particularly in proximity to its iron-based coordination nodes. The LRA complex exhibited the highest binding affinity and conformational stability. Density functional theory (DFT) calculations revealed interfacial electron transfer between the LRA and Fe centers, Bader charge analysis indicated electron transfer, with the Fe center losing ~ 0.927 e upon adsorption, providing a possible electronic-level explanation for the enhanced photothermal stability observed in thermogravimetric analysis (TGA) and color retention tests. The optimized film (containing LRA 3% + MIL-88B) exhibits enhanced tensile strength, increased water contact angle to 89.9°, indicating reduced surface hydrophilicity, and significant antioxidant activity, with ABTS radical scavenging rates exceeding 80%. The films exhibited rapid (< 5 min) pH responsiveness over a wide pH range (pH 2–13), demonstrating the potential to reflect the spoilage of beef, lamb, and shrimp through visible colour changes. Soil burial experiments confirmed that the film degraded by approximately 70% within 30 days. This MOF-assisted strategy significantly improved the inherent instability of anthocyanins and provides a sustainable functionalisation solution for smart food packaging systems.
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高影响因子
Nature Communications
·
2026
·
IF 18.1
Li Yuzhen,Ding Yafei,Li Yongji,Zhang Xuetong
Wearable chemical microreactors are highly desirable for life-sustaining processes such as on-demand oxygen-generation, but their development has been hindered by the lack of materials that combine dynamic robustness, textile integrability, and ultra-efficient fluid transport. Herein, we show a wearable microreactor based on armored aramid aerogel hollow fibers. Reinforcing these fibers with heat-shrink tubing yields textile-compliant elasticity while preserving their nanoporous structure. Subsequently, infusing a low-surface-energy liquid into the mesopores of aerogel walls creates a nanoconfined lubricant layer that reduces microfluidic drag by up to 68.1% compared to solid-walled channels. Finally, a O 2 -generated wearable microreactor prototype (268 g) achieves high space-time yield, 100% oxygen purity, and maintaining oxygen-supply under physical stress. In vivo trials at 4998 meters altitude demonstrate rapid blood oxygen saturation recovery, effectively alleviating acute hypoxia. This work establishes a materials paradigm that overcomes the trade-off between wearability and continuous-flow microreactor in on-body chemical synthesis.
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高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2026
·
IF 1.7
Wu Hao,Tanaka Mai,Osawa Naoki,Kubota Masahiko,Kim Seong-Yun
In this work, a silica-based adsorbent incorporating two types of extractants was synthesized through vacuum-assisted impregnation. The synergistic adsorption behaviors of the prepared (TEHTDGA + TAMIA-EH)/SiO 2 –P composite toward 14 types of representative metal ions in simulated high-level liquid waste were systematically investigated under different contact durations, nitric acid concentrations, and solution temperatures, revealing the strong affinity of the (TEHTDGA + TAMIA-EH)/SiO 2 –P composite toward Pd(II), Ru(III), Re(VII), Mo(VI), and Zr(IV). Particularly, Pd(II) rapidly adsorbed on the composite, reaching equilibrium within 2h, with a removal efficiency exceeding 95%. Notably, the adsorption performance of the (TEHTDGA + TAMIA-EH)/SiO 2 –P composite toward Pd(II) remained stable across broad ranges of nitric acid concentration (0.1–5M) and temperature (288–323K), indicating its strong acid tolerance and thermal stability. Furthermore, the adsorbed Pd(II) was effectively eluted using 0.01M thiourea ([HNO 3 ] = 1M) in chromatographic experiments.
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