DESALINATION
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2026
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IF 9.9
Linkai He,Xingqiang Wu,Yun Tian,Yixin Pan,Faquan Wu
The release and dispersion of uranium during mining activities and fuel/waste management processes in nuclear power plants pose serious environmental risks, particularly in aqueous systems. In such environments, uranium exhibits high solubility and strong mobility, leading to severe radioactive contamination of groundwater, soil, and ecosystems. Therefore, remediating uranium-contaminated environments remains a significant scientific and technological challenge. To address this issue, the present study exploits the high specific surface area and tunable pore architectures/functional sites of metal-organic frameworks (MOFs). Using a controlled synthesis strategy, a core-shell (Fe-Ni) galvanic cell structure was constructed and integrated with MIL-100(Fe) to fabricate the Ni-Fe-MIL-100(Fe) composite, enabling highly efficient and synergistic removal of U(VI) via an “adsorption-reduction-complexation” mechanism. Experimental results demonstrate that the maximum uranium uptake capacity reached 3038.19 mg·g −1 at 303 K and pH = 5, with a significantly enhanced removal efficiency. The kinetic analysis indicates that the uranium adsorption process is well described by the pseudo-second-order model. Combined with density functional theory (DFT) calculations, the electronic transfer channels of the structure were elucidated, revealing that they drive the reduction of U(VI) and facilitate its coordination and immobilization at multi-metal and oxygen-containing sites. These findings confirm that U(VI) removal by the composite material proceeds via a coupled chemical reduction and complexation process, thereby clarifying the underlying adsorption mechanism. Moreover, in mixed-ion solutions and real seawater, the composite maintains high adsorption capacity and excellent selectivity, demonstrating strong potential for uranium immobilization and recovery in the remediation of radioactive wastewater.
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Journal of Food Measurement and Characterization
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2026
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IF 3.6
Yang Fang,Lei Sichao,Ma Renyi,Zhang Wen,Luo Minhui,Xie Chenyang
To develop a novel intelligent packaging material capable of real-time food freshness monitoring and preservation, this study prepared a pH-responsive bioactive film (KCNB) by incorporating blueberry anthocyanins (BA) and nano‑zinc oxide (NanoZnO) into a konjac glucomannan/chitosan (KGM/CS) matrix. The resulting KCNB film was structurally characterized and functionally evaluated and results confirmed the successful dispersion of NanoZnO and BA within the matrix. The film exhibited excellent UV‑blocking capacity, significantly enhanced antioxidant activity (DPPH radical scavenging rate increased to 77.57%), and effective antibacterial efficacy against E. coli and S. aureus , which collectively help prevent light‑induced deterioration, chemical oxidation, and microbial spoilage. Crucially, the film displayed a reversible color transition from red to green across the pH range of 2–12, providing a basis for its function as a visual freshness indicator. When applied to chicken breast preservation, the KCNB film, through the synergistic action of these multiple functions, effectively slowed down spoilage, maintained a lower total volatile basic nitrogen (TVB‑N) level, and thereby extended the shelf life by approximately 4 days compared with the control group. This study demonstrates that the developed multifunctional film holds high potential for application in intelligent bioactive packaging of meat products.
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FOOD CHEMISTRY
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2026
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IF 10.4
Chenyang Wang,Cuiyu Huang,Licheng Yu,Xiwen He,Langxing Chen,Yukui Zhang
In this work, a fluorescent sensor based on dual-emissive RhB/COF@ZIF-90 composite was fabricated for ratiometric detection of tetracycline (TC) residues in foods. To mitigate the aggregation-caused quenching (ACQ) effect of TAPB-DMTA COF, ZIF-90 on TAPB-DMTA COF composite was fabricated by an in situ growth strategy. Rhodamine B (RhB) was subsequently encapsulated within the ZIF-90 framework to construct a dual-emission fluorescent probe. When TC was present, the fluorescence signal at 460, 525 and 570 nm increased linearly with the amount of TC. The I 570 /I 460 and I 525 /I 570 ratio signals were demonstrated in the two linear ranges of 5–100 nM and 0.1–20 μM concentrations of TC, respectively. This multi-signal sensor exhibited a low detection limit of 0.29 nM, enabling highly sensitive detection of TC. Furthermore, this work paves the way for developing other MOF/COF hybrids as multi-emission fluorescent sensors for application in antibiotic sensing in foods.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
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IF 4.1
Hu Jiale,Li Wei,Luo Pei,Nan Yihong,Liu Yimin,Yang Yashi,Zou Jianmei,He Huijun,Zhang Yun
In this work, an innovative Tyndall-effect-based (TE-based) colorimetric strategy was developed to detect the activity of alkaline phosphatase (ALP) via enzyme-triggered degradation of MnO₂ nanosheets (MnO₂ NSs), and it was further extended to construct a TE-based colorimetric enzyme-linked aptamer assay (ELAA) for monitoring thrombin (TB) concentrations. In the presence of ALP, ascorbic acid 2-phosphate (AAP) was hydrolyzed to ascorbic acid (AA), which in turn reduced MnO₂ NSs to Mn 2+ and led to their structural decomposition. Under the irradiation of a handheld laser pointer, the TE signal of the detection solution gradually diminished with increasing ALP concentration. The quantitative measurement of ALP was further achieved using a smartphone to read out the TE signal, with a limit of detection (LOD) of 0.35 mU/mL. Furthermore, this strategy effectively functioned as an exquisite signal generation mechanism to devise a TE-based colorimetric ELAA for TB detection. The results demonstrated that the proposed method exhibited high specificity and sensitivity for TB, capable of linear detection over a concentration range of 1–25 nM with a LOD of 0.38 nM (3σ). In actual human serum samples, the recovery of TB ranged from 93.40 to 109.30%. To our knowledge, this work presents the first TE-based colorimetric ELAA for instrument-free protein analysis by leveraging enzyme-triggered MnO₂ nanosheet degradation. This approach establishes a novel signal transduction mechanism for colorimetric ELAA, thereby offering significant potential to expand the theoretical scope of this assay format and broaden its applications in various resource-limited settings. Graphical abstract
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Jingbin Shi,Hongyuan Guo,Hao Wu,Xuedong Jia,Runying Chai,Yujue Feng,Suozhu Wu
Norfloxacin (NOR) is a fluoroquinolone antibiotic, and its long-term intake poses serious threats to human health. Therefore, sensitive determination of NOR is of great significance. This work develops a molecularly imprinted electrochemical sensor (MIES) for detecting NOR based on molecularly imprinted polypyrrole/carboxylated multi-walled carbon nanotubes-chitosan/glassy carbon electrode (MIP/cMWCNT-CS/GCE). The cMWCNT-CS serves as a conductive layer for signal amplification, while MIP acts as the recognition element for specific identification of NOR. NOR is indirectly detected by the reduction peak current of potassium ferricyanide probe . This MIES exhibits an ultra-wide linear range (1.00 × 10 −13 –1.00 × 10 −5 M) and an ultra-low detection limit (1.78 × 10 −14 M) with rapid response (adsorption time 4 min), high selectivity, and excellent reproducibility. Furthermore, the MIES is successfully applied to determine NOR in honey, milk, and tap water samples with satisfactory recoveries (87.30% ∼ 121.00%). This work provides a promising analytical avenue for rapid and ultrasensitive monitoring of NOR in food and environmental samples.
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ANALYTICA CHIMICA ACTA
·
2026
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IF 6.1
Shanshan Tao,Ruijia Hu,Xinyi Zhang,Chang Liu,Suqin Wang,Hongbo Li,Ruqin Yu
The residues of organophosphorus pesticides (OPs) in the environment and crops, resulting from irrational use will cause irreversible damage to the human nervous system by hindering acetylcholinesterase (AChE) activities. This study developed a novel proportional fluorescence sensing system based on UiO-66-NH 2 coated MnO 2 and Ampliflu Red (AR). In this sensor system, manganese dioxide nanosheets have both fluorescence quenching and catalytic functions. Based on the core mechanism of selective decomposition by reducing agents, it can respond to various OPs and enable multi-target detection of reducing biomolecules such as glutathione (GSH), cysteine (Cys), and ascorbic acid (AA). By means of principal component analysis (PCA), the sensor can effectively distinguish among GSH, Cys, and AA, achieving specific recognition of multiple targets. Under optimal conditions, the detection linear range for parathion is 1×10 -6 to 9×10 -1 mg/mL, with a detection limit as low as 0.33×10 -6 mg/mL; The linear ranges for GSH, Cys, and AA detection are 1–100 μM, 30–90 μM, and 1–50 μM, respectively, with detection limits of 0.33 μM, 10 μM, and 0.33 μM, respectively. This method exhibits high accuracy, facile operation, and favorable stability. It has been successfully implemented for the detection of tap water and 1% human serum samples. This makes the research findings more intuitive and clear. In addition, this research provides a feasible approach for developing diversified sensors based on functionalized metal-organic frameworks (MOFs), demonstrating strong potential for applications in environmental monitoring and bioanalysis.
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BIORESOURCE TECHNOLOGY
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2026
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IF 8.2
Ying Xu,Wei Li,Kun Liu,Ting Xu,Guanhua Wang,Tairan Pang,Chuanling Si
Peroxymonosulfate (PMS) activation via heterogeneous photocatalysis is effective for degrading refractory organic pollutants. However, conventional graphitic carbon nitride (g-C 3 N 4 ) is limited by narrow light absorption and inefficient charge separation. Herein, leveraging the metal-chelating ability of biomass sourced lignin, C, Co co-doped g- C 3 N 4 (LCN-Co) was successfully synthesized with enhanced photocatalytic and PMS activation performance. In the photo-PMS system, LCN-Co exhibited superior degradation of tetracycline hydrochloride (TC), with a rate constant 4.04, 2.90, and 2.35 times higher than MCN, LCN, and MCN-Co. Mechanistic studies revealed that lignin-derived carbon enhanced light harvesting and synergistically promoted charge separation with Co, thereby accelerating reactive oxygen species generation, PMS activation, and the Co 2+ /Co 3+ redox cycle. Moreover, lignin chelation effectively suppressed Co aggregation and leaching, resulting in excellent reusability. This work demonstrates a lignin-enabled dual-regulation strategy for improving light absorption and metal stabilization in g-C 3 N 4 -based photocatalysts.
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FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
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2026
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IF 1.8
Meijun Yang,Yan Xiao,Zhimin Chang,Zhenhui Chen,Takashi Goto,Song Zhang,Rong Tu
Diamond/Cu composites are promising for thermal management but their poor wettability requires carbide coatings for interfacial modification. This work proposes a novel magnesiothermic reduction method for synthesizing TiC @diamond at low temperatures utilizing a MgCl2–KCl molten salt system with TiO2 as the Ti source. An ∼325 nm TiC coating forms on diamond at 750 °C for 2 hours without graphitization. Interfacial analysis shows a semi-coherent interface with specific crystallographic orientations ([110] TiC // [110] diamond, (1 − 1−1) TiC // (1 − 1−1) diamond). The TiC @diamond/Cu composite shows optimal performance: thermal conductivity (TC) of 689 W/(m · K), 63% International Annealed Copper Standard electrical conductivity and 98.55% relative density, representing increases of 280.66% in thermal conductivity, 90.91% in conductivity and 8.02% in relative density compared to uncoated composites. Its CTE (Coefficient of Thermal Expansion) at 300 °C drops from 17.98 × 10−6 to 6.92 × 10−6/K, a 61.5% relative reduction, significantly enhancing thermal dimensional stability.
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Aggregate
·
2026
·Vol. 7
·期 2
·e70284
·
IF 14.5
Yifan Wu,Xuan Ma,Yanger Liu,Zhaoxuan Zhang,Yangzi Zhang,Wenqiang Zhang,Longjiao Zhu,Wentao Xu
Fluorescent RNA aptamers offer promising opportunities for next-generation biosensing but are often limited by low signal-to-background ratios and unstable folding kinetics. In this work, a label-free Förster resonance energy transfer (FRET)-enhanced fluorescent artificial RNA condensate (F-FARCON) is developed for small-molecule sensing, leveraging neutral molecular crowders (e.g., polyethylene glycol 8K), and RNA structural motifs to induce multivalent interactions and drive dynamic self-assembly. As a demonstration, a label-free FRET system is constructed by integrating a histamine-responsive RNA aptamer with thioflavin T (ThT) as the fluorescence donor, which increases the signal-to-noise ratio while reducing sequence complexity and production costs. Molecular crowders optimize the thermodynamic environment of RNA–ligand and RNA–RNA multivalent interactions, thereby improving folding stability, signal amplitude (dynamic range of up to ∼970-fold), and target affinity. The platform exhibits fast kinetics (<15 min), an adjustable detection range (0.1–200 and 5–1000 µM), and high sensitivity (limit of detection, 15.36 nM), with robust performance in complex biological matrices. The platform is further integrated into a freeze-dried paper-based portable device that enables dual-channel fluorescence readout for on-site rapid detection without sophisticated instrumentation. To further validate the modularity of F-FARCON beyond histamine, we reprogrammed the recognition module to target S-adenosyl-L-methionine (SAM), achieving nanomolar limits of detection. By linking crowding-guided assembly to hierarchical photophysical enhancement and analytical performance, the work delineates a generalizable aggregate-science route to versatile, low-cost, and field-deployable fluorescence sensing across food safety, environmental monitoring, and biomedical diagnostics.
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Small
·
2026
·
IF 11.8
Zhiwei Liu,Guoheng Xu,Binbo Li,Yaohui Gu,Yuhui Hu,Fangfang Xu,Bo Wang,Zhengguo Hu,Jinglai Duan
Nanofluidic ionic memristors have garnered considerable attention for their operational principles that emulate biological synapses, positioning them as promising candidates for neuromorphic systems. However, simultaneously achieving non-volatility and function-tunability in ionic memristors remains a significant challenge. Here, we demonstrate the successful emulation of key neuromorphic functions, including neural activation and synaptic plasticity, using a nanofluidic memristor integrated with sub-nanometer (sub-nm) channels within ion-track membranes. Unlike unipolar resistive switching, which is predominantly driven by concentration polarization in symmetric ion solution system, we demonstrate a reversible transport switching mechanism, triggered by multivalent ions (e.g., Ca 2+ and La 3+ ), that toggles between fast and slow modes. This mechanism induces a transition to bipolar resistive switching, significantly enhancing the device's non-volatility while preserving its reversibility. Furthermore, the memristive response can be effectively tuned by varying the doping concentration and external voltage. These findings provide new insights and design strategies for developing tunable bio-synapse emulation platforms operating in ionic aqueous media.
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RARE METALS
·
2026
·
IF 11
Rui Huo,Maoliang Tan,Hao Song,Liheng Wang,Tao Li,Feng Zhou,Zhi Chang,Paul K. Chu
en This link goes to a English section zh This link goes to a Chinese section Two-dimensional (2D) nonlayered niobium nitrides have attracted considerable interest for electrochemical energy storage. However, the synthesis of these materials is hampered by their nonlayered crystal structures, which are characterized by strong three-dimensional chemical bonding. Herein, we demonstrate the direct synthesis of nonlayered 2D NbN 0.8 /Nb 5 N 6 heterojunction nanosheets from commercial bulk Nb 2 O 5 through a scalable molten-salt-assisted route. The in situ formed molten KNbO 3 intermediate, confined within the K 2 CO 3 /KCl flux, guides the 2D growth of niobium nitride under NH 3 , yielding nanosheets with 4.8 nm thickness and lateral sizes of 3–5 μm. The as-synthesized 2D NbN 0.8 /Nb 5 N 6 nanosheets deliver a large capacitance of 918.2 F cm −3 (324.1 F g −1 ) at 1 A cm −3 , superior rate performance of 649.8 F cm −3 (229.4 F g −1 ) at 20 A cm −3 , and exceptional long-term cycling stability with 95.4% retention over 10,000 cycles, surpassing most reported niobium-based nitrides. Furthermore, the solid-state symmetric supercapacitor assembled with the two electrodes of 2D NbN 0.8 /Nb 5 N 6 nanosheets delivers a high volumetric energy density of 13 mWh cm −3 . This work reports a novel high-performance 2D niobium nitride electrode material and offers a generalizable synthesis strategy for 2D nonlayered transition metal nitrides. 摘要 en This link goes to a English section zh This link goes to a Chinese section 二维非层状氮化铌材料在电化学储能领域引起了广泛关注。然而,由于该类材料具有强三维化学键合的非层状晶体结构,其合成一直面临挑战。本研究展示了一种可规模化生产的熔盐辅助法,能够直接以商业块体Nb 2 O 5 为原料合成非层状二维NbN 0.8 /Nb 5 N 6 异质结纳米片。在NH 3 气氛下,原位生成并被限制在K 2 CO 3 /KCl熔盐介质中的KNbO 3 中间体,有效引导了材料的二维生长,最终获得了厚度为4.8 nm、横向尺寸为3–5 μm的纳米片。所合成的二维NbN 0.8 /Nb 5 N 6 纳米片在1 A cm −3 电流密度下具有918.2 F cm −3 (324.1 F g −1 )的高比电容,在20 A cm −3 下仍保持649.8 F cm −3 (229.4 F g −1 )的优异倍率性能,以及卓越的长循环稳定性(10,000次循环后容量保持率高达95.4%),其性能优于大多数已报道的铌基氮化物。此外,利用该二维NbN 0.8 /Nb 5 N 6 纳米片组装的固态对称超级电容器,可提供13 mWh cm −3 的高体积能量密度。本工作不仅报道了一种高性能的二维氮化铌电极材料,也为二维非层状过渡金属氮化物的合成提供了一种普适性策略。
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Small
·
2026
·
IF 11.8
Bicheng Wang,Yu Yao,Wenting Hong,Xu He,Chuanyong Jian,Zhaoan Hong,Qian Cai,Wei Liu
The advancement of spintronics relies on the development of 2D magnetic materials with robust room-temperature properties. However, challenges such as low Curie temperatures (T C ) and ambient instability have hindered their practical applications. In this study, we employ chemical vapor deposition (CVD) combined with salt-assisted methods and optimize growth parameters to synthesize phase-tunable Cr x S y compounds, including rhombohedral Cr 2 S 3 (ferrimagnetic below 120 K), trigonal Cr 5 S 6 (room-temperature ferrimagnetic), and hexagonal CrS (antiferromagnetic). Our findings reveal that self-intercalation of Cr atoms significantly modifies the lattice structure, electronic states, and magnetic properties of these materials. Cr 5 S 6 exhibits half-metallic characteristics with room-temperature ferrimagnetism, representing a significant advancement for practical 2D magnetic materials. The charge transfer from self-intercalated Cr atoms and superexchange interactions mediated by sulfur p -orbitals are identified as key mechanisms driving these tunable properties. This work highlights self-intercalation as a transformative strategy for engineering high-performance 2D magnetic materials, providing insights for advancing next-generation spintronic devices.
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危险品化学品经营许可证（带存储）