SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Long Bai,Beibei Lv,Xiuxiu Wu,Haohao Chen,Jinsong Yu,Ziqing Ye,Min Yuan,Hui Cao,Liling Hao,Fengqin Yin,Bing Bai,Tai Ye,Fei Xu
Excessive multi-site confinement impairs induced-fit Cd 2+ aptamer binding. • Ag-MOF/Pen co-regulation balances structural rigidity and binding flexibility. • Interfacial anchoring and H-bond regulation enhance apparent affinity 16.1-fold. • Label-free fluorescence enables accurate Cd 2+ analysis in pea seedling tissues. Aptamer immobilization can improve structural stability, but excessive confinement may restrict the conformational rearrangements required for induced-fit target recognition. A key challenge is therefore to stabilize recognition-competent conformations while preserving the structural adaptability required for binding. Using a Cd 2+ aptamer as a model, we first demonstrated that conventional multi-site immobilization increased the apparent dissociation constant by approximately eightfold relative to the free aptamer. To address this issue, we developed a surface-imprinting strategy that confines the aptamer within hydrogel through single-point tethering of the aptamer while modulating its local microenvironment. The Cd 2+ -bound aptamer was first assembled on Ag-MOF, followed by hydrogel polymerization in the presence of penicillamine. During imprinting, Ag-MOF promoted localized aptamer anchoring, while penicillamine regulated the hydrogen-bonding network surrounding the Cd 2+ -aptamer complex. Subsequent Cd 2+ removal generated an imprinted microenvironment that partially preserved the preorganized recognition conformation without over-constraining flexible regions required for rebinding. The optimized hybrid exhibited an apparent dissociation constant of 0.19 μM, corresponding to a 16.1-fold decrease relative to the free aptamer, and reached binding equilibrium within 10 min. Integration with label-free Tb 3+ -sensitized fluorescence enabled Cd 2+ detection with a limit of detection of 0.7 nM, approximately 1.1–1114-fold lower than nine representative reported methods, while maintaining satisfactory selectivity and reproducibility. The method was further validated by quantifying Cd²⁺ in different tissues of hydroponically grown pea seedlings and food matrices, with results consistent with ICP-MS. These results establish moderate, microenvironment-assisted confinement as a general design principle for balancing conformational stabilization and induced-fit adaptability at aptamer recognition interfaces. Download: Download high-res image (212KB) Download: Download full-size image
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高影响因子
LANGMUIR
·
2026
·
IF 4.4
Honglin Li,Yingqi Duan,Qingwen Feng,Linjiao Wei,Jingbin Zeng,Ziyue Chen,Qingtong Zhang,Yanpeng Chen,Zifeng Yan
Ag–Cu tandem catalysis provides an effective strategy to enhance C2+ selectivity in the electrochemical CO2 reduction reaction (CO2RR) by integrating CO generation and utilization for C–C coupling. Here, we report a series of Ag@Cu2O, Ag@CuO, and Ag@CuO-BDC core–shell catalysts designed to regulate the CO generation, Cu-oxidation states, and surface structures. The Ag@Cu2O catalysts exhibit pronounced tandem effects, suppressing CH4 formation while enhancing the C–C coupling on the Cu sites. Notably, Ag@Cu2O-30 achieves a high C2H4/CH4 Faradaic efficiency ratio of 6.5 at −1.8 V (vs RHE) with an increased C2H4 partial current density of 12.3 mA cm–2. Oxidation to Ag@CuO further modifies the Cu species distribution, facilitating CO and CO2 diffusion while reducing H2 formation. Moreover, constructing Cu-BDC-MOF followed by electrochemical reconstruction generates additional oxygen vacancies and stabilizes Cu+ species, enhancing C2H4 selectivity and stability but with increased CH4 formation and reduced current density. This study highlights Ag–Cu tandem catalysis and structural regulation of Cu as effective strategies for achieving selective reduction of CO2 toward C2H4.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zuo Guangling,Ye Hongyong,Du Jia,Ding Xin
A ternary Ag/Bi 2 O 3 /g-C 3 N 4 (Ag/BO/CN) photocatalyst was fabricated through a combined solvothermal and photochemical reduction approach for the degradation of ciprofloxacin hydrochloride (CIP). Upon illumination with simulated sunlight, the optimized Ag/BO/CN composite efficiently degraded CIP, resulting in near-complete (98.14%) removal within 100 min. This remarkable property is attributed to a synergetic interaction between the Ag surface plasmon resonance (SPR) effect and the S-scheme heterojunction (between BO and CN). In-situ XPS analysis and work function ( Φ ) calculations confirmed the S-scheme charge migration pathway. In this scheme, an internal electric field (IEF) prompts the reunification of less-reactive charge carriers, thereby selectively retaining the highly reductive electrons (e − ) in the conduction band (CB) of CN and the strongly oxidative holes (h + ) in the valence band (VB) of BO. Quenching experiments and electron spin resonance (ESR) spectroscopy identified superoxide radicals (·O 2 − ) and hydroxyl radicals (·OH) as the primary reactive intermediates. Moreover, the catalyst shows considerable promise for practical deployment, as evidenced by its excellent stability over four consecutive cycles and sustained degradation performance across various real water systems. Graphical abstract The alternative text for this image may have been generated using AI.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Bai Haoshen,Chen Liyan,Jiao Wenxin,Zhang Ganghua,Kong Demei,Li Dezeng
Silver nanowires (AgNWs) are regarded as a new generation of photoelectric material for transparent conductive films (TCFs) to replace indium tin oxide (ITO), on account of their superior conductivity, flexibility and stability. However, challenges still remain in the applications of AgNW-based TCFs to realize a combined enhancement of both transmission and conductivity. Herein, three types of AgNWs–ZnO composite TCFs were specifically designed to improve photoelectric properties. Through employing structurally controllable ZnO modifications on AgNWs, the contact architecture between AgNWs was optimized, enhancing optical performance and electron transport within the network. The results show that: (1) AgNWs/ZnO (Type-Ⅰ) with AgNWs deposited on a ZnO-nanoparticle (NP) film reaches a sheet resistance of 27.6 Ω·sq −1 at a transmittance of 90.68%; (2) AgNWs@ZnO (Type-Ⅱ) with AgNWs encapsulated by ZnO NPs reaches 20.6 Ω·sq −1 at 87.59%; (3) AgNWs⊥ZnO (Type-Ⅲ) with AgNWs integrated with ZnO nanotrees (NTs) achieves 44.0 Ω·sq −1 at 89.60%. Furthermore, Type-Ⅰ TCFs show excellent photocatalysis, interfacial hydrophilicity, and flexibility. The comprehensive multifunctionality of AgNWs–ZnO composite TCFs proves the great potential for their development. Graphical abstract The alternative text for this image may have been generated using AI.
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高影响因子
ACS Applied Bio Materials
·
2026
·
IF 5.6
Jun Ge,Xuechao Shi,Shuxian Hou,Yimei Wang,Xin Zhou,Yuhan Ji,Zhiru Tao,Xinxin Liu,Yaqi Cheng,Shujie Li,Yao Xiao,Ye Hong,Zuchun Zhao,Fei Ge,Jun Wang
The proliferation of drug-resistant bacteria in water poses a significant public health threat. Experimental wastewater from microbiology laboratories and residual fluids in medical catheters are particularly prone to pathogenic bacterial growth and biofilm formation. This challenge requires antibacterial agents that can eliminate pathogenic bacteria with high efficiency. In this study, core–shell Ag@Fe3O4 NPs were synthesized via a straightforward solvothermal method. This structuration minimizes silver ion loss and ensures sustained antibacterial activity through core–shell synergy. Mechanistic studies revealed that Ag@Fe3O4 disrupts biofilm architecture and induces nucleic acid leakage via the synergistic release of Ag+ ions and the generation of reactive oxygen species (ROS). Significantly, Ag@Fe3O4 NPs exhibit superparamagnetic properties and demonstrate a low minimum inhibitory concentration (MIC) of 10 μg/mL. In water treatment simulations, Ag@Fe3O4 NPs maintained a 100% pathogen elimination rate across diverse environmental conditions after 40 magnetic recovery cycles. Furthermore, the Ag@Fe3O4 NPs achieved precise targeting and efficient removal of biofilms in a medical catheter model under magnetic guidance. Ag@Fe3O4 NPs offer an efficient and sustainable solution for eradicating waterborne pathogens and eliminating medical catheter biofilms.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Rongjing Jia,Shuling Chang,Ruirui Wang,Yanhong Xu,Rijie Wang,Lihong Zhang
The electrocatalytic CO 2 reduction reaction to CO (ECO 2 RR) is an effective way to achieve carbon resource utilization. It requires catalysts that can synergistically couple CO 2 activation with efficient CO desorption. This work engineers this synergy by constructing an interfacial Ag δ+ -O-Zn configuration on Zn(OH)F-derived supports via controlled Ag loading (0–5 wt%). The optimal catalyst (3A/Z, 3 wt% Ag) balances the formation of interfacial, oxidized Ag species (Ag δ+ ) with well-dispersed metallic Ag 0 nanoparticles. It achieves a CO Faradaic efficiency of 95.4% at −1.15 V vs. RHE and maintains 86% efficiency over 5 h at 6.38 mA cm −2 . In-situ ATR-SEIRAS spectra and kinetics reveal that Ag δ+ -related sites lower the barrier for *COOH formation, while adjacent Ag 0 domains facilitate *CO desorption. Excessive loading (5A/Z) promotes Ag aggregation and support decomposition, diminishing the critical Ag δ+ -O-Zn interface and performance. This study highlights interface coordination engineering as a key strategy for designing bifunctional ECO 2 RR catalysts.
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高影响因子
Applied Materials Today
·
2026
·
IF 7
Rimsha Abbas,Muhammad Umair,Suzhu Yu,Jingjing Luo,Peike Wang,Jun Wei
Highly conductive and flexible inks are crucial for the fabrication of next-generation wearable electrochemical sensors. This study presents a multi-ion sweat sensor composed of screen-printed Ag-MXene conductive ink, featuring a high electrical conductivity of 2 × 10 6 S m -1 . A novel electrode configuration was developed, comprising three working electrodes (WEs) together with a common reference (RE) and counter electrode (CE), all coated with the same ion-selective gel. The use of a uniform gel across all WEs ensures a consistent sensing environment, minimizes ion cross-talk, and improves repeatability. The Ag-MXene ink has excellent electrochemical activity, resulting in rapid, reproducible, and very selective potentiometric responses even at low ion concentrations. The Ag-MXene ink-based multi-ion sweat sensor achieved near-Nernstian sensitivities of 65.1 ± 0.7 mV/decade for Na + , 59.8 ± 0.6 mV/decade for K + , and 57.5 ± 0.8 mV/decade for Li + . These results are close to the theoretical Nernstian slope (∼59.2 mV/decade at 25 °C). On-body testing reveals that the sensor performs consistently under mechanical deformation and in real-world situations, demonstrating its viability for continuous health monitoring. After mechanical cycling, the Ag–MXene electrodes retained R/R 0 ≈1 with negligible hysteresis, demonstrating the structural and electrical integrity of the composite ink. Sensing cycling further verified stability: repeated stepwise measurements for Na + (5–160 mM), K + (1–32 mM), and Li + (1–100 mM) produced nearly identical potential peaks across successive cycles with no cumulative drift and minimal up/down hysteresis. The calibrations remained near-Nernstian, with response times of ∼2–3 s and sub-second recoveries, demonstrating excellent mechanical and electrochemical durability. The scalable screen-printing fabrication approach enables the cost-effective and reliable fabrication of flexible, wearable multi-ion sensors. This study demonstrates the potential of Ag-MXene-based electrodes for high-performance, multi-functional sweat sensing and offers a feasible path to enhance wearable electronic technologies.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Chao Ying,Xinyue Zhu,Hanxiao Li,Yi Xie,Yang Wang,Dong Tian,Shiliu Yang,Daofu Liu,Shiyue Zhu,Guannan Xiao
Antimony trisulfide (Sb 2 S 3 ) has emerged as a promising absorber material for indoor photovoltaic applications owing to its ideal bandgap (∼1.73 eV) and high absorption coefficient in the visible spectrum. However, the carrier transport efficiency of Sb 2 S 3 thin films is strongly constrained by their preferential crystallographic orientation, with the [hk1]-oriented films exhibiting approximately 100 times higher resistivity than their [hk0]-oriented counterparts. Herein, we report a facile chemical bath deposition (CBD) strategy to achieve the [hk1]-oriented Ag-doped Sb 2 S 3 thin films by incorporating trace amounts of Ag + ions into the growth solution. The effects of Ag + concentration on the crystal orientation, bandgap, chemical composition, and defect density of the resulting Ag:Sb 2 S 3 thin films, as well as the photovoltaic performance of the corresponding solar cells, were systematically investigated. The results demonstrate that the Ag:Sb 2 S 3 thin film with an optimal Ag doping concentration of 2% exhibits superior [hk1]-orientation, significantly reduced defect density, and enhanced carrier transport properties, while maintaining an ideal bandgap of ∼1.77 eV. As a result, the Ag:Sb₂S₃ solar cell achieves a photoelectric conversion efficiency of 7.01% under AM 1.5 G illumination and up to 17.22% under warm white LED illumination (2762 K, 1000 lx), representing a notable achievement for Sb 2 S 3 -based indoor solar cells.
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高影响因子
INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 35
·20464-20471
·
IF 4.6
Sun Ling,Gao Zhanyong,Li Huimin,Xu Xinyi,Zhao Di,Li Huanrong
Silver nanoclusters (AgNCs) with
exceptional luminescence
suffer
from an aggregation-induced loss of their unique quantum confinement
effects. LTA zeolites are ideal hosts for stabilizing AgNCs, yet most
reported water-responsive AgNC@LTA systems only exhibit binary luminescence
switching, restricting high-resolution multilevel environmental monitoring.
Herein, we construct a Mg 2+ -regulated AgNC@LTA system via
sequential ion exchange and thermal treatment. The as-prepared Ag-LTA(Na/Mg)
achieves continuous three-state luminescence switching with yellow
emission in dehydration, red in slight hydration, and green in full
hydration. Mechanistic studies reveal that Mg 2+ isolates
AgNCs, blocks framework-to-cluster charge transfer, and stabilizes
the intermediate excited state. The luminescence was confirmed as
phosphorescence. This material realizes a naked-eye-resolvable color
transition over 0%–60% relative humidity with excellent reversibility,
breaking the binary limitation and offering an avenue for high-precision
visual humidity sensors.
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Jianjun Cao,Haoyue Yang,Taohua Zhou,Huaxin Zhu,Chaoqun Ma,Yuanlin Zheng,Wenjie Wan,Quanzhong Zhao
The excessive use of antibiotics in medicine, agriculture, and aquaculture has led to widespread environmental contamination and public health concerns, underscoring the urgent need for rapid, sensitive, and cost-effective detection methods. Here, we report a scalable surface-enhanced Raman scattering (SERS) platform based on silver-coated cross-scanned laser-induced periodic surface structures (CS-LIPSS) fabricated via femtosecond laser processing. By employing cylindrical lens-assisted beam shaping followed by orthogonal double-pass scanning, we generated periodic nanostructures enriched with dense nanoparticles. Subsequent Ag deposition produce a dense distribution of plasmonic hotspots, enabling strong electromagnetic enhancement. Compared with conventional mesh and single-scanned LIPSS substrates, the CS-LIPSS demonstrate superior SERS activity, with an enhancement factor of 6 . 4 × 1 0 7 and a detection limit down to 1 0 − 1 1 M for crystal violet. More importantly, the platform enable reliable identification of representative antibiotics including amoxicillin, tetracycline, and neomycin sulfate at concentrations as low as 1 ppm, highlighting its sensitivity and molecular specificity. The fabrication process is chemical-free, template-free, and compatible with wafer-scale production, offering a cost-effective route to reproducible, high-performance SERS substrates
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高影响因子
Materials
·
2025
·Vol. 18
·期 13
·3090
·
IF 3.2
Yuyang Zhou,Yun Li,Hao Liu,Chi Ma,Jing Sun,Xin Liu
Low-surface-energy and wettability-based antifouling coatings have garnered increasing attention in marine applications owing to their environmentally friendly characteristics. However, their limited functionality often results in suboptimal long-term antifouling performance, particularly under dynamic marine conditions. To address these limitations, a polydimethylsiloxane (PDMS)-based slippery (PSL) coating was fabricated on TC4 titanium alloy by integrating surface silanization via (3-Aminopropyl)triethoxysilane (APTES), antimicrobial Ag-TiO2nanoparticles, laser-induced hierarchical microtextures, and silicone oil infusion. The resulting PSL coating exhibited excellent oil retention and stable interfacial slipperiness even after thermal aging. Compared with bare TC4, low-surface-energy Ag-containing coatings, Ag-containing superhydrophobic coatings, and conventional slippery liquid-infused porous surfaces (SLIPS), the PSL coating demonstrated markedly superior resistance to protein adsorption, bacterial attachment, and diatom settlement, indicating an enhanced synergistic antifouling effect. Furthermore, it significantly reduced the diatom concentration in the surrounding medium without complete eradication, underscoring its eco-friendly and non-disruptive antifouling mechanism. This study offers a scalable, durable, and environmentally benign antifouling strategy for marine surface protection.
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高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Dan Zhao,Wenjie Jiang,Wang Zhang,Chenhao Zhang,Wenjun Zhao,Zhizhou Chen,Yanan Liu,Jiajie Xu
Antibiotic overuse has led to drug-resistant bacteria and superbugs, necessitating urgent strategies. MOFs, although they are potential antimicrobial carriers, have limitations at low doses and in single therapy. Here, by adding different amounts of CTAB in the precursor solution, two different morphologies of NH2-MIL-101(Fe)@Ag nanoagents were obtained, namely, NH2-MIL-101(Fe)@Ag-1 (Cube) and NH2-MIL-101(Fe)@Ag-2 (Octahedron). Antibacterial experiments showed that these two nano reagents with both photothermal and photodynamic effects exhibited nearly 100% bactericidal rate against high concentrations of Staphylococcus aureus and Escherichia coli (107 CFU/mL) within 15 min. The combination of inactivation of intracellular proteins and disruption of cell membranes induced by Ag ions and high temperature resulted in NH2-MIL-101(Fe)@Ag 100% in an octahedron showing durable and superior bactericidal performance at low doses (64 μg/mL), which is much better than other antibacterial reagents. Furthermore, the enhanced mechanism was discussed in detail by DFT calculations. A special electron transfer process occurred between Ag and NH2-MIL-101 (Fe) under 880 nm NIR irradiation, which promoted the generation of ROS and enhanced the antibacterial effect. In addition, these two nano reagents have good therapeutic effects on wound healing in vivo due to silver ions and photothermal effects.
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