Nature Communications
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2026
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IF 18.1
Qiu Pengpeng,Zhou Yi,Zhu Yuqi,Li Barun,Gao Beibei,Bao Weichao,Xu Fangfang,Fan Yuchi,Wang Lianjun,Jiang Wan,Luo Wei
Bulk silicon carbide (SiC) ceramics are important for extreme-environment applications, but conventional synthesis demands densification temperature above 2100 °C or additives. This work introduces a straightforward strategy utilizing hollow mesoporous powder, achieving nearly full densification (99.2 ± 0.49% relative density) at 1750 °C through spark plasma sintering. The hollow structure induces intense stress accumulation around mesopores, causing instantaneous structural collapse into nanofragments (~6 nm) that greatly accelerate the densification kinetics. The resulting SiC ceramics feature fine grains (200–300 nm), clean grain boundaries, and coexisting 2H, 4H, and 3 C polytypes. These structural characteristics yield good mechanical properties: nanoindentation hardness > 35.0 GPa, Vickers hardness of 31.8 ± 1.6 GPa, and flexural strength of 625.32 ± 22.3 MPa—all exceeding conventional pure SiC. Theoretical and experimental analysis demonstrate that high-density stacking faults, nano-twins, and polytypic boundaries create substantial lattice distortions and atomic strain fields, effectively pinning dislocations and suppressing plastic deformation.
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Nature Communications
·
2026
·
IF 18.1
Cai Jianhua,Xiao Hui,Wang Qian,Fu Junyao,Yang Pengli,Zhu Jiaxuan,Tian Kaige,Fu Donglong,Pei Chunlei,Zhao Zhi-Jian,Ma Xinbin,Chen Sai,Gong Jinlong
Bifunctional catalysis is pivotal to industrial heterogeneous catalytic processes, yet its performance is limited by the kinetic entanglement among different elementary steps. In the conversion of light alkanes to aromatics, a promising non-naphtha route to produce benzene, toluene and xylene (BTX) that examples this challenging, this paper describes a process-separated cascade catalysis (PSCC) for efficient BTX synthesis, prioritizing kinetic decoupling over spatial intimacy of active sites in bifunctional systems. We employ a spatially decoupled metal-zeolite catalyst, achieving >95% propane conversion and 82.3% aromatic selectivity with near-exclusive BTX formation at 550 °C during continuous reaction-regeneration cycles. In situ spectroscopies and kinetics analysis reveal that PSCC decouples kinetics of alkane dehydrogenation to olefine intermediates (ethene, propene) in the first stage and synchronizes this process with oligomerization and aromatization reactions in the second stage. This synchronization affords the rate matching of two stage, thus minimizes cracking by-products and enhances BTX production substantially. Combined with high catalytic stability and technoeconomic assessment, this PSCC strategy represents a robust pathway in alkane (C 2 –C 4 )-to-BTX conversion and beyond bifunctional catalysis processes.
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NATURE
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2026
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IF 56.1
Pan Deng,Liang Kaiwen,Xin Chen,Zhong Lei,Jiang Shaojun,Zhang Chenchu,Yang Liang,Wang Zhiqiang,Lao Zhaoxin,Ni Jincheng,Wang Chaowei,Li Jiawen,Zhen Shenglai,Yu Benli,Huang Zhixiang,Sun Fang-Wen,Chu Jiaru,Hu Yanlei,Zhang Li,Wu Dong
Optical tweezers offer precise, non-contact control, but operate in a limited force regime and impose strict requirements on the characteristics of the targets as well as the environmental conditions 1 , 2 , 3 , 4 . Millimetre-scale mechanical tweezers can offer higher gripping force but are not suitable for precise manipulations 5 , 6 , 7 , 8 , 9 , 10 , 11 . Integrating microgrippers directly at the optical fibres provides a new approach for precise micromanipulation. However, existing fibre-integrated tweezers still face challenges in achieving high-performance manipulation of micro-objects (for example, single cells) within narrow spaces, mainly due to simplified architectures, constrained designs and millimetre-scale footprints 12 , 13 , 14 . Here we report a three-dimensional (3D) optical fibre gripper (OFG), which is fabricated by two-step, two-photon polymerization. The OFG consists of rigid photoresist microclaws and soft thermoresponsive hydrogel muscle doped with silver nanoparticles, and its size is only 38 × 38 × 61 μm 3 . The OFG exhibits a force-to-mass ratio of about 340 μN mg −1 , outperforming previously reported fibre-integrated tweezers by one to two orders of magnitude. The OFG can manipulate opaque particles, irregular micromechanical components and diverse single-cell types. We further demonstrated its potential in 3D microassembly of complex microdevices (bearings, shafts and gearboxes) and biomimetic sampling in the narrow environment (<300 μm). These results position the OFG as a compact fibre-tip manipulator for 3D micromanipulation, offering reversible and tunable gripping in an intermediate force regime between optical field trapping and millimetre-scale mechanical tweezers.
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Nature Communications
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2026
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IF 18.1
Wu Yutong,Chang Bohong,Tong Xichuang,Yu Chufan,Liu Zhen,Ma Shiao,Li Chao,Chen Yan,Yin Longwei
Roughness and fragility of bottom-up interfaces in perovskite solar cells accelerate device degradation and increase maintenance costs, while conventional interface engineering often fails to address issues at multiple interfaces simultaneously. Here, trimethyl(cyanomethyl)ammonium iodide is employed for a dual-interface self-regulation. Solution containing this molecule selectively desorbs non-covalently bonded self-assembled molecules, facilitating deprotonation of P−OH groups on self-assembled molecules. The resulting −PO − headgroups undergo secondary homogeneous assembly, converting weakly adsorbed self-assembled molecules into stable bonded P−O−metal species and reducing potential barriers in the bottom depletion region. Simultaneously, trimethyl(cyanomethyl)ammonium iodide is extracted to the perovskite surface, spontaneously forming a one-dimensional n-type capping layer with a robust edge-sharing skeleton and enhancing quasi-Fermi level splitting at the interface. This coupled interfacial reinforcement leads to a high efficiency of 27.05% (certified 26.61%) and maintains over 95% of the initial efficiency after 2,100 hours of continuous operation at 65 °C.
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高影响因子
JOURNAL OF SOILS AND SEDIMENTS
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2026
·Vol. 26
·期 6
·190
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IF 3.3
Lv Jingyi,Zheng Dongmei,Ma Zhirong
Objective To optimize the structure and stability of rice husk biochar through vermiculite modification for improving soil carbon sequestration effects in farmland soils. Materials and methods This study prepared pristine rice husk biochar (RBC) and vermiculite-modified rice husk biochar (V-RBC) using a tube furnace pyrolysis method. Systematic characterization was conducted to investigate the improvement of physicochemical properties of rice husk biochar by vermiculite modification. Subsequently, a 35-day pot experiment was carried out to investigate the impact of vermiculite-modified rice husk biochar on soil carbon sequestration performance. Results and Discussion Vermiculite modification significantly optimized biochar properties, increasing specific surface area by 16.6%, enhancing thermal stability (R 50 =92.43%), and reducing DOC content by 31.26%. The pot experiment demonstrated that based on a comprehensive analysis of soil fertility, soil aggregate stability, soil organic carbon content, soil enzyme activities, plant growth status, plant photosynthetic carbon sequestration, and soil microbial biomass carbon, 3% vermiculite-modified rice husk biochar (V-RBC) exhibited a significantly better effect on enhancing the overall soil carbon sequestration under dryland maize cultivation compared with unmodified biochar. Conclusion Vermiculite modification significantly improves the soil carbon sequestration performance of rice husk biochar in a dose-dependent manner. The improvement is more obvious under maize dryland conditions, which is a combined result of moisture, crop, and biochar. This study provides theoretical and practical support for agricultural waste utilization and farmland carbon sequestration.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
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IF 4.1
Zhang Ming,Li Yao,Li Xinrong,Tian Kunyan,Meng Zihui,Xue Min
The increasing global prevalence of pollen-induced respiratory allergy highlights the need for precise and accessible methods of allergen identification. In this study, we developed a sensing platform based on carbon dots (CDs) for the detection of Art v1, the primary allergen in mugwort ( Artemisia ) pollen. Biomass-derived CDs were synthesized from Xanthii Fructus using a microwave-assisted hydrothermal method. The synthesis process was carefully designed to retain the specific bioactive components from the plant precursor, which endowed the CDs with inherent molecular recognition toward Art v1. The correlation between the retained component content and the recognition capability of the CDs was established through FTIR and XPS analyses. Subsequently, a ratiometric fluorescent probe was constructed by integrating the CDs with a Ru(bpy) 3 Cl 2 ·6H 2 O reference signal into a portable test strip sensor. This probe allows visual assessment through distinct color shifts under UV light. Furthermore, when coupled with a smartphone-based colorimetric readout system, the platform facilitates accurate and highly selective identification and quantification of Art v1 within 5 min. The detection range was 0.5–80 nM, with a limit of detection of 0.186 nM. The sensor demonstrated robust on-site detection capability in complex biological and environmental matrices, with recovery rates ranging from 90.5% to 104.5%. This work not only presents a cost-effective, user-friendly strategy for allergen detection but also illustrates a pathway to confer targeted molecular recognition to sensing materials through rational biomass precursor selection and process design. Graphical abstract
The alternative text for this image may have been generated using AI.
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Journal of Ovarian Research
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2026
·Vol. 19
·期 1
·157
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IF 5.3
Wang Mei,Chen Hongling,Lin Shaozi,Meng Zuyu,Zhang Yiyao,Liu Fang,Li Menghan,Sun Chengjin,Guan Minxi,Song Lingliang,Zhao Guoping,Zhang Di,Qin Jiajia
Background Premature ovarian insufficiency (POI) is characterized by complex etiologies and currently lacks effective treatments, posing significant threats to women’s physical and psychological health. Quercetin (QUE), a bioactive flavonoid inherent in traditional herbs such as Flos Sophorae and Cuscuta chinensis, demonstrates potent redox-modulating and anti-senescence capacities. This investigation validates its therapeutic efficacy against POI, specifically elucidating granulosa cell-centric mechanisms. Methods POI mouse models and injury models of the KGN (human ovarian granulosa cell line) were induced through the administration of cyclophosphamide (CTX). Subsequently, these models were treated with drugs such as QUE. Morphological changes in the ovaries of the mice were observed, and vaginal smears were conducted to monitor the estrus cycles and patterns of the mice. ELISA was employed to detect sex hormone levels in various mouse groups, while Hematoxylin-eosin (H&E) staining was utilized to assess the status of ovarian follicles at different stages. Moving forward, immunohistochemical analysis and Western blot were conducted to detect the expression levels of Sirtuin 1 (SIRT1), Hypoxia-Inducible Factor 1 Alpha (HIF-1α), and other apoptosis-related proteins. Ultimately, methods such as Terminal deoxynucleotidyl transferase dUTP Nick-End Labeling (TUNEL) assay, β -galactosidase staining, flow cytometry for apoptosis detection, and 5-Ethynyl-2′-deoxyuridine (EdU) assay were utilized to evaluate the apoptosis, senescence, and proliferation of mouse ovarian tissues and human ovarian granulosa cells KGN. Results QUE alleviated CTX-induced ovarian atrophy and follicular atresia by upregulating SIRT1 expression. Furthermore, QUE partially restored estrous cyclicity, normalized sex hormone levels, and improved follicular counts through SIRT1/HIF-1α modulation. Concurrently, QUE suppressed apoptosis in both murine and human granulosa cells via the SIRT1/HIF-1α pathway. Conclusion Our findings demonstrate that QUE enhances ovarian reserve by inhibiting granulosa cells apoptosis via SIRT1/HIF-1α signaling, highlighting its therapeutic potential for POI management. Graphical The alternative text for this image may have been generated using AI.
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IRANIAN POLYMER JOURNAL
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2026
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IF 2.9
Li Chaojie,Zhang Yao,Liu Xiaoyu,Wang Long,Li Xue,Xia Zi-ang,Sun Yunqiang,Xu Baoming,Zhang Heng
The growing interest in environmentally friendly and biodegradable packaging materials has driven the development of bio-based films with improved functional properties. In this work, cellulose (CMC)/chitosan (CS) composite films incorporated with four phenolic acids—gallic acid (GA), salicylic acid (SA), protocatechuic acid (PCA), and p-hydroxybenzoic acid (HA)—were fabricated and systematically evaluated. The addition of phenolic acids was expected to enhance intermolecular interactions within the polymer matrix, thereby improving the mechanical strength and antimicrobial functionality of the films. Structural characterization using scanning electron microscopy confirmed that the modified films displayed compact, uniform, and defect-free morphologies, suggesting good compatibility between CMC, CS, and the phenolic acid additives. Mechanical testing demonstrated that the CMC-CS-GA film exhibited the most significant reinforcement, achieving a tensile strength of 32 MPa and an elongation-at-break of 25%, values comparable to those required for commercial PVDC packaging materials. Antibacterial analyses showed that phenolic acid incorporation greatly boosted the films’ inhibition efficiency, reaching 91.2% against Escherichia coli and 97.1% against Staphylococcus aureus . These enhanced antimicrobial effects are attributed to the phenolic hydroxyl groups, which can disrupt bacterial cell membranes. Overall, the study reveals that CMC-CS composite films functionalized with phenolic acids combine biodegradability, mechanical robustness, and excellent antimicrobial performance, highlighting their strong potential as active and sustainable food-packaging materials for extending the shelf life of perishable products. Graphical abstract The alternative text for this image may have been generated using AI.
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CATALYSIS LETTERS
·
2026
·Vol. 156
·期 6
·160
·
IF 2.5
Wu Yuchen,Luo Xue,Deng Zeyu,Zhou Hualan,Wang Shengkang,Wang Xuesong
Conventional fossil fuels represent non-renewable energy resources that contribute significantly to environmental pollution, primarily through the emission of black carbon (BC). Given the urgent need to develop sustainable energy alternatives and utilize waste resources, this study reports the synthesis of a defective yet stable sponge-like catalyst through the anchoring of ruthenium (Ru) nanoparticles on a hybrid substrate composed of BC and carbonized Metal-Organic Framework-303 (MOF-303). Systematic optimization of the BC/MOF-303 mass ratio and sintering temperature yielded a catalyst exhibiting exceptional performance in the heterogeneous phase hydrodeoxygenation (HDO) of vanillin (VAN) to 2-methoxy-4-methylphenol (MMP) under mild conditions (1 MPa H 2 , 220 °C, 1.5 h). The optimized catalyst achieved complete VAN conversion with an MMP selectivity of 92%. Furthermore, the catalyst demonstrated remarkable reusability, maintaining high activity over five consecutive reaction cycles, and exhibited broad applicability to various lignin-derived compounds as well as raw lignin. Structural characterization revealed that the integration of BC and MOF-303 formed a defective substrate characterized by a well-developed porous architecture and abundant active sites. Notably, the nitrogen-containing moieties within MOF-303 facilitated the formation of Ru-N chelates, which enhanced the adsorption and polarization of C = O bonds, thereby promoting the HDO reaction pathway. This work not only provides a viable strategy for designing sustainable and efficient lignin conversion catalysts but also advances the valorization of industrial waste materials. Graphical The alternative text for this image may have been generated using AI.
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IONICS
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2026
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IF 3.4
Da Qianhong,Dang Zhengze,Liu Dan,Kang Ziyi,Zhang Yunbo,Yang Peizhi
Zinc metal anode plays a vital role in aqueous zinc-ion batteries, while the continuous formation of zinc dendrites and the resultant detached dead zinc hinder the real use. Herein, a dead zinc reuse strategy is proposed by utilizing the reaction of redox mediator 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO). The shuttle reaction of TEMPO during the cycling processes enables the continuous reaction of dead zinc into active zinc ions. With the addition of TEMPO, Zn-Cu batteries demonstrate an average Coulomb efficiency of 99.5%. The Zn-MnO 2 full cell also exhibits remarkable cycle stability over 1500 cycles by adding TEMPO. This new approach proposed here to reactivate dead zinc promotes the advancement of the research of the long-life zinc metal batteries.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
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IF 4.1
Liu Limei,Sun Taimin,Sun Yunyu,Feng Xuyang,Xue Enbo,Wang Binghao
Surface-enhanced Raman spectroscopy (SERS) provides ultrasensitive molecular fingerprinting, but conventional static SERS substrates are often limited by inefficient analyte capture and poor spatial controllability. Herein, we report a light-driven micromotor SERS detector based on silver-coated polystyrene microspheres (Ag@PS) for active, localized, and rapid biochemical sensing. The Ag@PS micromotors were fabricated through an electroless silver-plating strategy, forming a dense nanoparticle-like silver shell that provides abundant plasmonic hotspots for SERS enhancement. Under light irradiation, the micromotors exhibited reversible “on–off” locomotion, positive phototaxis, and pronounced light-induced clustering. The micromotors reached an average velocity of approximately 6 μm s⁻ 1 under 1.2 mW cm⁻ 2 irradiation and could be remotely guided toward target regions by moving the light spot. Benefiting from light-directed accumulation and intimate probe–analyte contact, the Ag@PS micromotor clusters enabled sensitive SERS detection of rhodamine 6G down to 10⁻⁸ M with good signal reproducibility. Furthermore, the platform achieved label-free in situ Raman detection of diverse microorganisms, including Paramecium , Spirogyra , Euglena , and Marimo , using handheld Raman systems. This work demonstrates a simple and programmable light-responsive micromotor SERS probe for active target enrichment and on-site biological analysis, offering a promising strategy for portable, real-time, and spatially controlled SERS detection. Graphical abstract
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npj Science of Food
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2026
·Vol. 10
·期 1
·276
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IF 9.7
Hou Xin,Zhou Zhilei,Shi Peiqin,Wang Yan,Liu Shuangping,Ji Zhongwei,Zhang Dachuan,Mao Jian
Odor detection threshold (ODT) quantifies the perceptual potency of volatile compounds and is a key parameter in flavor chemistry. It is widely used to identify key food odorants, calculate odor activity values, and evaluate the contribution of volatiles to overall aroma perception. However, reliable ODT data remain sparse and inconsistent, and are unavailable for many volatiles detected in metabolomics analyses, complicating the identification of key food odorants and the quantitative interpretation of aroma contributions. Here we developed a machine learning framework to predict aqueous ODTs using a curated dataset of 1003 compounds, achieving a test-set R ² of 0.83. External validation with 177 independently measured compounds supported the model’s predictive utility, with 87.0% of predictions falling within a 10-fold deviation and 97.7% within a 100-fold deviation. Structural analysis suggested that aliphatic acids and nitrogen-containing compounds exhibit relatively high ODTs, whereas acyclic sulfur compounds, methoxypyrazines, haloanisoles, and exocyclic esters display low ODTs. Model-guided screening prioritized candidate high-potency odorants, and human sensory evaluation of 12 representative compounds provided preliminary prospective support for the prioritization workflow. These results provide a computational framework for prioritizing potent food odorants and offer data-driven insights into molecular features associated with odor potency in food aroma chemistry.
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危险品化学品经营许可证（带存储）