International Journal of Minerals Metallurgy and Materials
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2025
·Vol. 32
·期 9
·2260-2269
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IF 7.2
Xie Zhipeng,Zhang Da,Peng Haiyang,Lei Yong,Yang Bin,Liang Feng
Nitrogen-doped single-walled carbon nanohorns (N-SWCNHs) can serve as an effective carrier for platinum (Pt) catalysts, which has the potential to improve the electrocatalytic activity of oxygen reduction reaction (ORR) and the operation life of the catalyst. In this work, dahlia-like SWCNHs with N contents ranging from 2.1at% to 4.3at% are controllably synthesized via arc discharge and applied as a carrier of Pt nanoparticles (NPs), denoted as Pt/N-SWCNHs. Pt/N-SWCNHs-2:1 (graphite and melamine with the mass ratio of 2:1) exhibits excellent electrocatalytic activity (onset potential = 0.95 V). The half-wave potential of Pt/N-SWCNHs-2:1 is only reduced by 2 mV after 3000 cyclic voltammetry cycles. This can be attributed to the enhanced dispersion of Pt NPs and the strong electronic interaction between the N-SWCNHs and Pt, facilitated by the optimal nitrogen doping level. The results of this work offer important perspectives on the design and enhancement of Pt-based electrocatalysts for ORR applications, highlighting the critical role of the nitrogen doping level in balancing the electrocatalytic activity and long-term stability.
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Food and Bioprocess Technology
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2025
·
IF 5.8
Liu Chang,Luo Linjie,Lu Xueying,Li Xu,Liu Zhiming
This study presents the development of a novel multifunctional smart packaging film designed to enhance food freshness and possess ammonia-sensing capabilities. The film was fabricated using hydroxypropyl methylcellulose (HPMC) and zinc alginate (ZA), incorporating dragon fruit peel anthocyanins (DE) as pH-sensitive dyes. A hydrophobic layer composed of stearic acid and nano-silica (0.2 g SiO 2 in 1.5 mL solution) was uniformly spin-coated onto the HPMC/ZA/DE film surface and further modified via chemical vapor treatment to improve water resistance. The resulting HPMC/ZA/DE/SiO 2 film demonstrated excellent physical properties, including a high-water contact angle of 116.9°, indicating strong hydrophobicity and effective UV shielding. The film exhibited significant antibacterial activity, achieving 99.99% inhibition rates against Escherichia coli and Staphylococcus aureus . Mechanical tests showed better tensile strength (33.3 MPa) and reduced water vapor permeability (0.33 × 10⁻ 11 g/m·s·Pa) compared to the unmodified control film. In practical application, pork samples wrapped with the smart film were stored at 4 °C for 6 days. A distinct color change from purple to green was observed by day 6, corresponding to elevated pH and TVB-N levels, indicating spoilage. Specifically, on day 9, the packaged pork exhibited a TVB-N value of 49.57 mg/100 g, while the control group reached 51.4 mg/100 g, confirming the film’s spoilage-inhibiting effect. This work offers a promising strategy for developing intelligent active packaging and demonstrates potential for preserving a wide range of perishable foods beyond pork.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Dong Wentao,Zhang Mingguang,Peng Tao,Peng Yangyi,He Zanhua,Yao Daojin
With the rapid development of high-speed railway, real-time monitoring of operation safety becomes more and more crucial. However, power supply for microsensors in railway monitoring systems is still demanding and challenging. Stable energy to onboard sensing devices is essential to ensure the safe operation of rail transit systems. Herein, a hybrid piezoelectric–triboelectric nanogenerator (HPTG) is proposed to harvest the vibration energy on the bogie, which is also used as the self-powered sensing for continuous structural health monitoring (SHM) of train bogie. HPTG is designed and fabricated with polyvinylidene fluoride (PVDF)/zinc oxide (ZnO) composite and polydimethylsiloxane (PDMS) film. The experiment results demonstrate that incorporating ZnO simultaneously enhances piezoelectric and triboelectric outputs while improving the overall output performance of the device, fully realizing the synergistic effect of piezoelectric effect and triboelectric effect. Under the condition of external load, the maximum power of the hybrid output is 3.256 μW with excellent working stability. Through the integration of rectifier circuit and energy storage module, the microthermohygrometer is successfully driven. In addition, the feasibility of vibration energy harvesting of HPTG in the actual operating environment is further verified on the small-scale wheel rolling test bench, which provides a solution for the power supply problem of microelectronic equipment for train bogie monitoring, and can effectively help to develop the self-powered monitoring system of rail transit.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·Vol. 60
·期 34
·15098-15112
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IF 3.9
Zeng Daiwei,Li Zhou,Su Yue,Liu Chen-chen,Li Fang,Chen Jianxing,Lin Tengfei,Lin Cong,Zhao Chunlin,Gao Min,Wu Xiao,Wen Na,Chen Weisheng
As advanced optical storage materials, fluorescent hydrogels still face significant challenges in achieving multi-stimulus responsiveness and broad spectral tunability. This study presents a novel aggregation-induced emission (AIE)-active hydrogel system with dual fluorescence emission characteristics, synthesized via a facile one-pot approach. Through controlled freeze–thaw processing cycles, tetrakis(4-hydroxyphenyl)ethylene (TPE-4OH) and tetrakis(4-aminophenyl)ethylene (TPE-4NH 2 ) were successfully incorporated into the three-dimensional polymer matrix. The developed system demonstrates programmable fluorescence modulation through three distinct stimulus–response mechanisms: solvent composition (DMSO/H 2 O), pH variation (HCl/NaOH), and ion coordination (Fe 3 ⁺/EDTA). Notably, these stimuli enable precise individual or synergistic control over both fluorescence intensity and chromatic characteristics of the hydrogel system. Furthermore, fluorescence modulation precision was enhanced through proportional control of the dual fluorophores, enabling tunable ion recognition sensitivity and a spectral shift from blue to green emission. The integrated multi-stimulus responsiveness and reversible emission characteristics confer dual functionality to this hydrogel system: serving as a patterned substrate fabrication platform while demonstrating promising applicability in multidimensional encryption technologies, analyte-specific sensing probes, and smart optical devices. Graphical abstract Multistimuli-responsive hydrogel system with color changing capabilities.
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JOURNAL OF NANOBIOTECHNOLOGY
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2025
·Vol. 23
·期 1
·1-20
·
IF 12.6
Yang Jinghong,Li Runli,Wang Xiaoshuang,Lu Dongheng,Li Weichang,Wang Yan
Irregular alveolar bone defects pose persistent clinical challenges due to their complex morphology and the lack of biomaterials that simultaneously provide structural integrity, biocompatibility, and dynamic osteoinductive potential. Herein, we report a fiber-reinforced, dual-network hydrogel system (OHADN fiber@Yoda1 hydrogel) engineered to recapitulate mechanobiological cues for enhanced bone regeneration. This injectable hydrogel integrates oxidized hyaluronic acid (OHA) crosslinked with Yoda1-loaded PLGA-collagen fiber fragments and stabilized via catechol-Fe³⁺ coordination, forming a robust and self-healing structure. The fiber network enhances matrix stiffness and sustains Yoda1 release, promoting PIEZO1 activation in stem cells and enabling persistent mechanotransduction. In vitro, this system effectively regulates macrophage polarization, maintains cellular tension homeostasis, and significantly upregulates osteogenic markers via the PIEZO1–ITGα5 axis. Transcriptomic profiling and mechanistic validation revealed that focal adhesion and cytoskeletal signaling pathways are enriched upon hydrogel treatment. In a rat alveolar bone defect model, the OHADN fiber@Yoda1 hydrogel demonstrated superior bone volume restoration and trabecular architecture compared to conventional materials. This work presents a promising paradigm for spatiotemporal control of osteoimmune microenvironments through mechanoresponsive biomaterials.Graphical abstract
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Molecular Horticulture
·
2025
·Vol. 5
·期 1
·1-22
·
IF 8.1
Wang Zhiling,Yuan Yixin,Dong Rui,Zeng Ruihong,Zhao Xin,Xu Yanjie,Gao Junping,Hong Bo,Gu Zhaoyu
Floral fragrance is essential for the attraction of pollinators and responses to biotic and abiotic stresses. It also enhances the quality and economic value of plants. Phytohormones, acting as key signaling molecules, are crucial roles in regulating plant growth and development. However, the molecular mechanisms underlying the biosynthesis of fragrance-related volatiles and their crosstalk with other endogenous signals within plants remain largely unknown. Here, we identified a sesquiterpene synthase gene, CmEβFS , in chrysanthemum, which encodes a catalytic enzyme responsible for synthesizing the key fragrance-related compound ( E )-β-farnesene. We demonstrated that CmEβFS is negatively regulated by CmWRKY1, thereby inhibiting ( E )-β-farnesene biosynthesis. Furthermore, CmWRKY1 interacts with the salicylic acid (SA) receptor CmNPR3 to regulate SA-mediated CmEβFS transcription. Our findings reveal that SA regulates ( E )-β-farnesene biosynthesis by controlling CmEβFS expression via the CmWRKY1-CmNPR3 module during floral development. These findings enhanced our understanding of the mechanisms underlying SA-mediated regulation of volatile organic compounds (VOCs) biosynthesis and provided insights into improving floral fragrance.
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BIOLOGICAL TRACE ELEMENT RESEARCH
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2025
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IF 3.6
Xu Hao,Yang Jingyi,Ye Ruiqi,Cao Mixia,Li Shenghe,Liu Chang,Li Lei
Acute cadmium (Cd) exposure induces hepatic toxicity in murine models, where oxidative stress and subsequent inflammatory responses are recognized as principal contributors to hepatocyte damage. The NLRP3 inflammasome, a pivotal member of the NOD-like receptor family, mediates pyroptotic cell death in diverse hepatic inflammatory pathologies. While murine liver exhibits heightened susceptibility to heavy metal toxicity, the mechanistic basis of Cd-induced hepatocyte injury remains incompletely characterized. This study aims to clarify the cytotoxic effects of Cd on murine hepatocyte line BNL CL.2 and systematically dissect the underlying molecular mechanisms. Via molecular and cellular assays, we evaluated mitochondrial function, reactive oxygen species (ROS) levels, NLRP3 inflammasome activation, and pyroptotic features in BNL CL.2 cells post Cd exposure; intervened with ROS scavengers N-acetylcysteine (NAC) and Mito-TEMPO, and detected transcriptional activity of the antioxidant regulator Nrf2. Experimental data demonstrate that Cd exposure triggers mitochondrial dysfunction coupled with excessive ROS production, concomitant NLRP3 inflammasome activation, and characteristic plasma membrane rupture confirming pyroptosis. Notably, NAC and Mito-TEMPO effectively attenuate these pathological responses, establishing ROS as critical regulators of Cd-induced NLRP3 inflammasome activation; mechanistically, Cd suppresses Nrf2 transcriptional activity and downstream antioxidant gene expression, thereby disrupting redox homeostasis. These findings collectively delineate a pathogenic cascade where Cd impairs mitochondrial integrity and disrupts Nrf2-dependent antioxidant defenses, synergistically driving ROS-mediated NLRP3 inflammasome activation and subsequent hepatocyte pyroptosis. This mechanism provides novel insights into heavy metal hepatotoxicity and identifies potential targets for treating Cd-induced liver injury.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2025
·
IF 3.5
Wang Jing,Li Shuangbao,Ren Lu,Wang Zian,Liu Yanqi,Zhang Dawei
The compounds with an imidazole structure, DHH and DHM, were synthesized using benzoyl, ammonium acetate, 2-hydroxy-5-methylisophthalaldehyde, and 2-(3-aldehyde-4-hydroxyphenyl)- 4-methylthiazole-5-carboxylate as raw materials. The structures of probes DHH and DHM were characterized by FT-IR, 1 H NMR, 13 C NMR, and HR-MS. This study found that DHH and DHM can rapidly and highly selectively recognize Cu 2+ in EtOH-H 2 O (1:1 v/v). The spectral characteristics of DHH and DHM were studied using fluorescence spectroscopy and UV–vis spectroscopy. The results show that the combination of DHH and DHM with Cu 2+ produces a significant fluorescence quenching effect, and the influence of other metal ions can be neglected. Subsequently, through Job’s plot analysis, 1 H NMR titration, and DFT calculations, the binding mechanisms of probes DHH and DHM with Cu 2+ were explored, and it was found that they coordinate in a 2:1 ratio. The experimental study on standard addition recovery showed that probes DHH and DHM could be used for the quantitative detection of Cu 2+ in actual water samples. The probes were also successfully applied to the monitoring of Cu 2+ in living cells. Graphical abstract
The compounds containing imidazole structures in probes DHH and DHM were successfully synthesized and characterized. Test strips made of DHH and DHM were used for rapid “naked-eye” detection of Cu2 + in an aqueous medium. The probes were successfully used to monitor Cu2 + in living cells and real water samples.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Li Lishan,Yin Ruomei,Sheng Zhizhi,Zhang Xuetong
Aerogels, often hailed as the world-changing magic nanoporous material, are traditionally synthesized through reagent-induced sol-gel transitions. However, the uncontrolled random motion of molecular/colloidal precursors poses significant challenges in achieving precise structural control of aerogel. In this study, we present an unprecedented electro-manipulation strategy, easy to be applied in batch-run as well as roll-to-roll processes, to engineer well-defined micro-/macro-structured aerogel films. By leveraging electrophoresis-driven self-assembly and electrochemistry-driven gelation of negatively charged aramid nanofibers in sequence, we demonstrate large-area (50 cm × 50 cm) as well as continuous (up to 20 meters in length) fabrications of aramid colloidal aerogel films with patterned microstructures and programmable nanofiber orientation. These features effectively enhance the performance of the resulting colloidal aerogel films such as mechanical strength, thermal insulation and proton conduction, and show their broad applications in various fields. This work presents an effective strategy for precise aerogel structure regulation through external field manipulation.
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CELLULOSE
·
2025
·
IF 4.8
Sun Yanyan,Natsuki Jun,Zhou Wanyu,Zou Lihua,Wang Zhen,Li Bingbing,Gao Yamin,Chu Changliu,Natsuki Toshiaki
Wearable electronics have gained considerable attention in recent years owing to their softness, flexibility, and compatibility with the human body. However, most conventional multifunctional smart textiles are developed by integrating various fibers or fabrics with single functionalities, facing challenges such as high integration complexity and poor stability, and struggling to meet the demands of wearable electronics. In this study, we present a simple and scalable method involving dip-coating and spray-coating to produce multifunctional, wearable, high-performance MXene/CuS/cotton fabrics. Leveraging the conductive networks formed by synergistic MXene/CuS and the porous structure of the fabrics, these MXene/CuS/cotton fabrics demonstrate impressive electromagnetic interference (EMI) shielding effectiveness (51.1 dB at a thickness of 335 μm) and notable Joule heating performance (approximately 60 °C at a voltage of 6 V). Moreover, when pressure is applied, MXene/CuS/cotton fabrics exhibit negative piezoresistivity, high sensitivity (− 18.2 kPa −1 for 1–4 kPa pressures), rapid response and recovery times (0.4 s), along with exceptional long-term durability and stability (over 2000 cycles). These remarkable properties suggest that MXene/CuS/cotton fabrics are highly promising for future applications in human motion detection, EMI shielding, thermal management, and other applications.
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BIOMEDICAL MICRODEVICES
·
2025
·Vol. 27
·期 3
·1-11
·
IF 3.3
Bashir Muhammad Noman,Wang Miaomiao,Chen Yating,Yuan Yuxuan,Noureen Beenish,Liu Minggao,Liu Yage,Qu Zhan,Du Liping,Wu Chunsheng
The urgent need for adenosine triphosphate (ATP) detection spans various fields, particularly in biology and medicine. Developing a simple, quick, label-free, and highly sensitive biosensor for ATP detection is crucial. In this study, we created a label-free biosensor using a field-effect device, specifically an electrolyte-insulator-semiconductor (EIS) sensor, which was functionalized with aptamer and graphene. We prepared a nanocomplex by combining graphene with bovine serum albumin (BSA) in PBS and subjecting it to ultrasonication. This Graphene/BSA mixture was then combined with 70% glutaraldehyde to form the Graphene/BSA/GA nanocomplex. The successful modification of the EIS biosensor surface with Graphene/BSA/GA and aptamer immobilization was confirmed using atomic force microscopy (AFM), which indicated successful molecule attachment through surface roughness. Electrochemical characterization revealed that the biosensor is sensitive to ATP concentrations ranging from 0.1 nM to 100 nM, with a detection limit as low as 0.32 nM. Statistical analysis demonstrated the biosensor’s high sensitivity and specificity for ATP. Furthermore, the biosensor maintained stable performance for ATP detection over a period of 5 days. This sensing approach effectively detected ATP with outstanding performance, showing significant potential for advancing label-free ATP detection technologies. Graphical abstract
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JOURNAL OF FLUORESCENCE
·
2025
·
IF 3.1
Wang Lubiao,Zhang Weiwei,Wu Linfang,Li Feng,Wang Mengyu
Although Rhodamine 6G (R6G) has previously been considered insensitive to pH and stress, with no established applications in sensing these specific parameters, this article presents a breakthrough by re-evaluating its potential as active materials for temperature, pH, and stress sensing. This breakthrough is achieved by employing “balance center” instead of peak maximum or mean wavelength for characterizing the spectral emission band. To verify the improvement, R6G/resin composite samples were prepared. Then the balance center among all the spectral characteristics ensured the most precise identification of the fluorescence band shifts caused by any environmental changes onto the samples. Sensitivities of the prototype sensors with balance center output were calibrated as 0.0653(3) nm/°C in the range of 20 ~ 60 °C, 0.339(8) nm/pH in the pH range of 5.71 ~ 9.44, and − 0.63(2) nm/MPa (equivalently 18 cm -1 /MPa) in the stress range of 0.07 ~ 1.43 MPa, respectively. Corresponding resolutions of the sensing systems were determined as 0.15 °C, 0.18 pH, and 0.03 MPa. These example sensors can be utilized in cytobiology research, demonstrating the potential for extensive sensing applications with a wide range of other fluorescent dyes.
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