Small
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2026
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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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高影响因子
RARE METALS
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2026
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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
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2026
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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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高影响因子
Advanced Science
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2026
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IF 14.1
Silu Feng,Qinglong Luo,Siqi Ai,Suiwei Shen,Chengyong Wang,Zhishan Yuan
Solid-state nanopore arrays are emerging as powerful tools for label-free, ultrasensitive biosensing, yet their implementation has been constrained by inter-pore crosstalk and limited fabrication uniformity. A multilayer Al 2 O 3 /Au/Si 3 N 4 nanopore architecture, produced via helium ion beam lithography, is introduced to address these limitations through structural and materials-level innovation. Finite-element analysis identifies a critical inter-pore spacing approximately 20 times the pore radius as necessary to minimize electric field coupling, enabling rational array design. The membrane structure incorporates a dielectric Al 2 O 3 layer for electrical isolation and an intermediate gold layer for site-specific aptamer immobilization, confining molecular recognition to the nanopore interior. Arrays with ∼30 nm pores and <5% size variation achieve 300 nm spacing and support statistically independent, parallel signal acquisition. Diverse nanopore arrays with 75 nm pores and 800 nm spacing are utilized for the specific detection of alpha-fetoprotein. Detection of alpha-fetoprotein demonstrates label-free sensing at concentrations down to ∼3 fM across six orders of magnitude in dynamic range. This platform defines a closed-loop pathway from theoretical modeling to scalable fabrication, establishing a foundation for rational design and high-throughput deployment of solid-state nanopore biosensors.
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ACS Applied Materials & Interfaces
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2026
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IF 8.2
Hangjian Zhou,Jianwei He,Xuejiang Li,Jin Zhai,Xia Fan
Development of efficient artificial light-driven ion pumps is crucial for solar energy harvesting, yet remains fundamentally constrained by severe carrier recombination in photoactive materials. To overcome this fundamental limitation, we design a carbon nitride-carbon nanotube composite membrane that utilizes an interfacial Schottky junction for enhanced charge separation. The charge-regulating behavior of Schottky junctions effectively inhibits photoinduced charge recombination, thereby augmenting charge density asymmetry across the membrane. The resulting robust built-in electric field significantly amplifies light-driven force beyond single-component systems. Under 200 mW cm–2 illumination, the composite membrane demonstrates exceptional ion pumping performance, enabling reverse ion transport against a 2000-fold concentration gradient. Compared to homogeneous carbon nitride membranes, it exhibits a 233% enhancement in gradient tolerance and a 293% increase in power output. This work presents a Schottky junction engineering strategy for high-performance light-driven ion pumps, paving the way for advanced solar energy conversion and optoelectronic applications.
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高影响因子
ANALYTICAL CHEMISTRY
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2026
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IF 7.3
Zhuandi Zhu,Mingshuai Fan,Yubao Lan,Zhengang Han,Yaqi Zhao,Yanjun Feng,Xiaowan Li,Xiaoquan Lu
Carbazole derivatives have great potential in the field of electrochemiluminescence (ECL) due to their excellent photoelectric properties. The ECL properties of carbazole derivatives have been studied by modifying different substituents on carbazolyl benzene. Among them, DPA-BFCz shows obvious aggregated enhanced luminescence (AEE) and excellent ECL performance. Notably, scanning photoelectrochemical microscopy (SPECM) and intensity-modulated photocurrent spectroscopy (IMPS) are used to analyze the charge transfer kinetics of the emitters. In addition, a sensor of Cyt c with an ECL-resonance energy transfer (RET) mechanism is developed by taking advantage of the superior ECL performance of DPA-BFCz, with a concentration range of 1.0 to 500 nM and a detection limit of 0.20 nM. This work presents a novel strategy for rapid and sensitive detection of Cyt c.
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高影响因子
LANGMUIR
·
2026
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IF 4.4
Yuru Yang,Xiaoxia Li,Qian Xiao,Shuang Zhou,Qingmiao Pu,Bingyu Luo,Xiaodong Su
To prevent the proliferation of the OTC resistance genes in wastewater and their spread in the environment, advanced treatment of the OTC-containing wastewater has become necessary. In this study, an adsorbent material consisting of CDs/o-MWCNTs was synthesized using a combination of DBD technology and a hydrothermal method. The material was characterized by TEM, SEM, FT-IR, XRD, XPS, BET, TGA, and surface ζ-potential analysis. The effects of the adsorbent dosage, adsorption temperature, solution pH, adsorption time, and ionic interference on the adsorption of the OTC by CDs/o-MWCNTs were investigated. The results showed that the material contains 73.42% C, 6.39% O, and 5.78% N, with abundant active sites, a specific surface area of 148.48 m2/g, and a maximum adsorption capacity of 12.619 mg/g. The adsorption process followed the pseudo-second-order kinetic model and the Freundlich isotherm model. A series of analyses indicated that the adsorption and removal of OTC from water by CDs/o-MWCNTs occur through the synergistic effects of hydrogen bonding, π–π interactions, and van der Waals forces. After 10 adsorption–desorption cycles, the adsorption efficiency of CDs/o-MWCNTs remained above 91%. Moreover, for aquaculture wastewater with the OTC concentration below 0.1 mg/L, the material achieved a removal efficiency close to 100%. It also exhibited good salt tolerance and is suitable for the advanced treatment of OTC in high-salinity (1.0 mol/L NaCl) wastewater.
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2026
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IF 2.4
Hengli Ning,Hanyu Zheng,Yuqi Wang,Sisi Zhang,Long Li,Tong Pan,Yafei Guo,Tianlong Deng
Salt lakes are rich in boron, magnesium, potassium, lithium, and other elements of considerable industrial significance. Boron serves as a crucial tracer for investigating geological processes due to its high incompatibility and solubility. However, boron tends to form complex borates with other elements in salt lakes such as magnesium borates. The excessive accumulation of boron in brine, coupled with the phase transition of magnesium borate that releases boron, complicates the study of the boron cycle and contributes to environmental pollution. Therefore, investigating the phase transitions of borates and identifying stable solid phases at various temperatures are crucial for enhancing our understanding of the boron cycle and mitigating pollution in salt lakes. This paper investigated Mg2B6O11–H2O (308.15, 323.15 K) and Mg2B6O11–MgSO4 (5, 10, 20 and 30%)–H2O (308.15 K) systems via isothermal dissolution equilibrium, thermogravimetry, and X-ray diffraction. At 308.15 K, Mg2B6O11–H2O began converting to pinnoite at 237 h, reaching equilibrium at 1000 h; at 323.15 K, conversion started at 33.5 h and finished within 170 h. In MgSO4 solutions (5–30%), inderite remained stable for 68–94 days without transformation.
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ANALYTICAL CHEMISTRY
·
2026
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IF 7.3
Bo Wang,Xinyi Luo,Wenting Guo,Ping Hu,Yong Wang,Guohua Qi,Yongdong Jin
Hydrogen sulfide (H2S) is the third gasotransmitter after nitrogen oxide and carbon monoxide, playing vital roles in physiological controls, such as angiogenesis, vascular homeostasis, thrombosis, inflammation, and remodeling. Monitoring the content level and dynamic variations of H2S within cells will help understand its involvement and relationship in cancer proliferation and may also lead to new cancer therapy options. Herein, we developed a simple and effective approach for ionic rectification sensing detection of H2S in single living cells using p-azidobenzoic acid (PA)-functionalized glass nanopores (PA-nanopores), in which the glass nanopores were successively functionalized with 3-aminopropyltrimethoxysilane and PA, and the exposed azido groups on the inner wall of the nanopore caused a negative rectification ratio (R) and varied upon reaction with the intracellular H2S. In the presence of H2S, azido groups could be reduced to amino groups, leading to a shift in the rectification ratio. The developed H2S nanopore sensing platform showed high resolution and excellent selectivity, making it reliable for the quantification of H2S in individual cells. The H2S concentrations in individual HeLa cells, MCF-7 cells, and HL7702 cells were effectively quantified using the approach.
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ACS Food Science & Technology
·
2026
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IF 3
Jiayi Chen,Dandan Zhang,Lu Liu,Xiaoli Wu,Meihan Guo,Hong Yan Zou,Xi Yang
Herein, a cost-effective, naked-eye-readable platform for on-site biogenic amines (BAs) detection and shrimp freshness monitoring was developed based on a ratiometric fluorescent CDs–RhB hybrid nanosystem that was constructed by integrating carbon dots (CDs) with rhodamine B (RhB). Biogenic amines induced a significant enhancement in the green fluorescence emission of CDs, while the red fluorescence emission of RhB remained unchanged, enabling an instant self-calibration during detection. Loaded on filter paper to form disposable test strips, the nanosystem enabled a visible color transition from orange to green with increasing BAs concentration. Readable via a smartphone RGB app, the paper-based assay showed a linear response of 5.0–250 μM with a limit of detection (LOD) of 3.56 μM using histamine as the model analyte. Validated through on-site shrimp quality evaluation, the paper-based sensor established a reliable “nanoprobe–paper–phone” strategy, facilitating on-site and quantitative freshness assessment in real-world demand scenarios.
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ACS Catalysis
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2026
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IF 13.1
Wendong Wang,Xingwen Cha,Longmei Shang,Kang Sun,Fangsong Guo,Jianchun Jiang,Guowu Zhan
This work demonstrates a strategic shift from dynamic electrolyte modulation to static, intrinsic promotion of the CO2 reduction reaction by stably integrating alkali metal cations as a solid-state component within a heterogeneous catalyst. To address the persistent challenge of alkali metal ion leaching due to high aqueous solubility, we immobilize K+ cations into a carbon nitride framework (Ni@K–C3N4) hosting atomically dispersed Ni–N3 sites via an ionothermal strategy. Structural confinement through coordination with nitrogen sites in the C3N4 matrix effectively suppresses K+ leaching, enabling sustained electronic regulation of the Ni centers. Combined experimental and theoretical analyses reveal that K+ incorporation attenuates d-π conjugation, promotes electron localization around Ni sites, and stabilizes low-valent Niδ+ species. This electronic reconfiguration enhances CO2 adsorption and activation while suppressing competitive hydrogen evolution reaction. The optimized Ni@K–C3N4 catalyst achieves a CO Faradaic efficiency of 95% at −0.74 V vs RHE, a current density of ∼20 mA·cm–2, and stable operation over 50 h. Notably, it maintains >80% CO selectivity under a diluted CO2 atmosphere (40%), highlighting its practicality for real low-concentration streams. This work establishes a polymer-functionalization strategy for precise electronic tuning of single-atom catalysis, advancing the design of efficient CO2 utilization systems.
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MICROCHEMICAL JOURNAL
·
2026
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IF 5.2
Xiaolin Jia,Miaomiao Li,Zhiguang Liu,Yujie Han,Hua-Zhong Yu,Lifang Fan,Yujing Guo
This work presents an on-off ratiometric electrochemical quantitation study of methyl parathion (MP), one of the most popularly used organophosphorus pesticides, based on electrode modification with a newly developed nanocomposite, i.e., reduced graphene oxide (rGO) functionalized with poly(diallyldimethylammonium chloride) (PDDA) and nickel hexacyanoferrate (NiHCF). It was shown that MP strongly adsorbs on the modified electrodes and produces a distinct reduction signal (-NO 2 ), which increases proportionally with its concentration; meanwhile, the intrinsic reduction signal (Fe(III)/(II)) from the nanocomposite (NiHCF/PDDA@rGO) decreases due to the inhibited electron-transfer process upon MP binding. Indeed, plotting the ratiometric signal (the ratio of decreased Fe(III)/(II) current and the increased MP current) as a function of the analyte (MP) concentration produces a linear calibration curve in the range of 0.05 μM to 10 μM (R 2 = 0.9987), with a limit of detection (LOD) of 16 nM. The method was further validated in real water samples, showing recoveries of 96.2–102% with relative standard deviations below 3.3%, which are comparable with standard HPLC results.
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危险品化学品经营许可证（带存储）