COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Yueyan Zhang,Cairong Du,Hongliang Wei,Xiaolong Liu,Yu Liu,Qiaoran Zhang,Gang Wang,Tao Guo,Meng Yan,Xiping Yang
The ideal flexible hydrogel sensor should combine excellent mechanical properties, high conductivity, and effective antibacterial activity to prevent bacterial growth. To address the limitations of traditional hydrogel sensors, such as insufficient flexibility, poor adhesion, and dependence on external energy during radical polymerization, this study developed a novel hydrogel based on a tannic acid-silver ion (TA-Ag + ) dynamic dual self-catalytic system. Through catalytic rapid radical polymerization, a double-network (DN) hydrogel was rapidly prepared at room temperature. This DN conductive hydrogel exhibits remarkable stretchability (up to 3000 % strain), high electrical conductivity (17.57 S/m), and self-adhesive capability, with measured maximum adhesion strengths on various substrates as follows: ceramic, 45.8 kPa; stainless steel, 43.62 kPa; glass, 43.43 kPa; aluminum, 37.07 kPa; acrylic plastic, 42.44 kPa; cardboard, 26.75 kPa; fresh porcine skin, 14.66 kPa. The TA and in situ generated silver nanoparticles within the system confer significant antibacterial properties to the hydrogel, with inhibition zones exceeding 20 mm against both Staphylococcus aureus and Escherichia coli . The introduction of LiCl enhances the water retention rate of the hydrogel by more than 20 %. The incorporation of methyl cellulose improves the biocompatibility of the material and promotes the formation of a denser cross-linked network and ion channels, thereby enhancing both tensile resistance and electrochemical performance. Experimental results demonstrate that the hydrogel can be applied in real-time monitoring of human joint movements, including finger, wrist, and elbow flexion, neck motion, and even large-range activities of the knee joint during vigorous exercise. These findings indicate that the material holds broad application prospects in the fields of wearable sensing and health monitoring.
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Scientific Reports
·
2026
·
IF 3.9
Wang Qiuyue,He Qiuzhi,Huang Guangkun,Han Yingxin,Qin Yue,Fang Zhijie
Supported silver nanoparticles (AgNPs) have been extensively used as antibacterial agents in biomedicine, biotechnology, and environmental remediation. However, a facile and scalable method for preparing homogeneously dispersed AgNPs on clay minerals remains a challenge. In this study, a one-pot method was successfully developed for the synthesis of homogeneously dispersed AgNPs supported on the surface of clay minerals (e.g., montmorillonite (Mt) and palygorskite (Pal)). Typically, clay minerals were mixed with AgNO 3 (as a precursor) and NaNO 3 (as a dispersant) by thorough grinding in a mortar, and then the mixture was heated slowly. AgNO₃ undergoes thermal decomposition to generate AgNPs via a self-reduction process, without the assistance of any external reductants. The free ions dissociated by molten NaNO₃ inhibit the aggregation of AgNPs. Specifically, AgNPs were uniformly dispersed on Mt and Pal. Correspondingly, the average particle sizes of the AgNPs were determined to be 10.71 ± 2.16 nm for 6% Ag/Mt-s and 6.07 ± 3.26 nm for 6% Ag/Pal-s, respectively. The antibacterial performance of the nanocomposites was associated with both the concentration of the target materials and their stability in the medium. Specifically, the physicochemical properties of Pal facilitated the small particle size of AgNPs, which in turn enhanced their antibacterial activity. The findings of this study highlight the advantages of utilizing clay minerals as supports to realize the high antibacterial activity of AgNPs. Meanwhile, this study provided a novel and facile strategy for synthesizing silver/clay mineral nanocomposites with homogeneously dispersed silver nanoparticles supported on the surface of clay minerals, without chemical reductants or surfactants. This study provided a theoretical basis for the design and preparation of high-efficiency, low-cost antibacterial silver/clay mineral nanocomposites in the future.
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PubMed
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CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.2
Diankun Song,Yunyun Wu,Jiahui Hua,Chunfeng Shao,Zhaoyang Wei,Jianji Wang,Kai Dai
Imidazolium-based ionic liquids (ILs) exhibit great potential in promoting electrochemical CO 2 reduction reaction (CO 2 RR) by reducing overpotential reduction and enhancing catalytic efficiency. However, the regulatory role of ILs structure in the local physicochemical region at the electrode/electrolyte interface and in reaction kinetics remain unclear. In this study, we designed imidazolium-based ILs with tunable cation alkyl chain length and systematically revealed the dynamic interfacial regulation mechanism controlled by cation structure, based on in-situ infrared spectroscopy and molecular dynamics simulations. The commercial Ag electrodes in electrolytes with critical chain length exhibit nearly 100% Faradaic efficiency for CO production while maintaining high current density. Imidazolium cations with critical chain length effectively regulate the electric double layer at the Ag electrode/electrolyte interface: they notably balance a range of positive and negative factors, including hydrophobicity, CO 2 absorption, conductivity, viscosity, and hydrogen evolution reaction, etc . Collectively, these effects synergistically shape an optimized interfacial local physicochemical region, enhancing the rate of CO 2 catalytic reactions. This work elucidates the mechanistic framework of interfacial regulation in CO 2 RR and delivers molecular design principles for engineering IL-based electrolytes toward enhanced catalytic selectivity.
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CHEMICAL ENGINEERING JOURNAL
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2015
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IF 4.321
Xiaolian Jing,Jiale Huang,Huixuan Wang,Mingming Du,Daohua Sun,Qingbiao Li
Supported Ag catalyst for ethylene epoxidation was prepared by an impregnation–bioreduction process with Cinnamomum camphora (CC) extract. Influence of bioreduction temperature, concentration of CC extract, silver loading amount, calcination temperature as well as Cs promoter on catalytic performance were thoroughly investigated and the catalysts were characterized. The results showed that the catalyst prepared from bioreduction process exhibited excellent performance for the ethylene epoxidation with O 2 . Proper amount of Cs addition could effectively improve the catalytic performance of the catalyst. The optimal catalyst 15Ag/α-Al 2 O 3 -150Cs gave the EO concentrations of 1.70%, EO selectivity of 87.46% and EO STY of 223.07 g h −1 L −1 cat at 200 °C, showing high catalytic stability with no significant decrease in the activity and the selectivity during 50 h.
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ELECTROCHIMICA ACTA
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2015
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IF 4.504
Weiwei Li,Ruizhuo Ouyang,Wangyao Zhang,Shuang Zhou,Yang Yang,Yajun Ji,Yang Yang,Kai Feng,Xiaocai Liang,Mingshu Xiao,Yuqing Miao
Single walled carbon nanotube (SWCNT) sandwiched Ni-Ag hybrid nanoparticle layers were developed as electrocatalyst for glucose (Glu) oxidation . By mixing the carboxylated SWCNTs and Ni/Ag ions, Ni/Ag ions were easily adsorbed on both sides of SWCNTs in good order due to the electrostatic interaction between them, forming the Ni/Ag ion doubly adsorbed SWCNTs. Once the electrode modified with Ni/Ag ion doubly adsorbed SWCNTs was immersed in Ni-Ag solution, the Ni/Ag ion doubly adsorbed SWCNTs were immediately surrounded by a large amount of Ni/Ag ions. As the electrodeposition started, the Ni/Ag ions pre-adsorbed on the walls of SWCNTs were first reduced to very small particles as seeds to induce the further growth of Ni-Ag nanoparticles (NPs) on SWCNTs (seed-induced effect), forming the SWCNTs sandwiched Ni-Ag hybrid nanoparticle layers. Compared with the electrodeposition of Ni-Ag on bare GCE , the proposed Ni-Ag/SWCNTs composite was greatly improved in many properties like the particle size of Ni-Ag NPs, the hydrophilicity , the electron transfer ability and the electrocatalytic activity . For Glu electro-oxidation, Ni-Ag/SWCNTs/GCE demonstrated extraordinary electrocatalytic performance where the good linear current responses were obtained in two Glu concentration ranges of 0-2.5 mM and 0-350 μM with correlation coefficients ( R 2 ) of 0.9935 and 0.9985. A high sensitivity of 2946 μA mM ⿿1 cm ⿿2 was achieved with the proposed Ni-Ag/SWCNTs based sensor. More importantly, three excellent linear relations were also achieved in the ranges of 0-11 μM, 10-90 μM and 170-350 μM with R 2 as high as 0.9999 and the detection limits of 0.094, 0.076 and 0.062 μM, respectively. The new method was successfully applied to Glu detection in blood samples with preferable accuracy and precision.
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BIOSENSORS & BIOELECTRONICS
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2014
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IF 6.451
Pengjuan Ni,Yujing Sun,Haichao Dai,Jingting Hu,Shu Jiang,Yilin Wang,Zhuang Li
Glutathione (GSH) plays an important role in the biological system and serves many cellular functions. Since all of the biothiols possess similar functional groups, it is still challenging to selectively detect GSH over cysteine (Cys) and homocysteine (Hcy). In this work, a novel and simple colorimetric method for discriminative detection of glutathione (GSH) over Cys and Hcy is developed. The proposed method is based on the fact that Ag [I] ion could oxidize 3,3′,5,5′,-tetramethylbenzidine (TMB) to the oxidized TMB to induce a blue color and an absorption peak centered at 652 nm. However, the introduction of GSH could cause the reduction of oxidized TMB and it could also combine with Ag + , both of which result in a blue color fading and a decrease of the absorbance at 652 nm. Based on this finding, we propose a method to qualitatively and quantitatively detect GSH by naked eyes and UV–vis spectroscopy, respectively. The proposed method shows a low detection limit of 0.1 µM by naked eyes and 0.05 µM with the help of UV–vis spectroscopy. In addition, this method has great potential in discriminatively detecting GSH over other amino acid and biothiols. More importantly, this method is simple and fast without the preparation of nanomaterials and has also been successfully applied to the detection of GSH in biological fluids.
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OPTICS LETTERS
·
2018
·Vol. 43
·期 10
·2244-2247
·
IF 3.589
Ruibin Lin,Liang Hu,Jinzhang Wang,Wenjing Zhang,Shuangchen Ruan,Yu-Jia Zeng
© 2018 Optical Society of
America
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LANGMUIR
·
2026
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IF 4.4
Yue Xu,Jingshi Liang,Yanwei Du,Chunling Zhang,Zhihui Zhang,Bo Liu
The overuse of antibiotics has accelerated the emergence and spread of drug-resistant microorganisms, creating an urgent need for anti-infective materials with integrated therapeutic and monitoring functions. Herein, a leaf-inspired porous layered hydrogel, HEVCTM, was developed for photothermal antibacterial treatment and flexible sensing. The precursor hydrogel, HEVCTM, was first prepared by one-pot free-radical polymerization of the hydrophilic functional monomer VIM-CAT, the hydrophobic monomer TBA-MA, and N-hydroxyethyl acrylamide (HEAA). After immersion in AgNO3 solution, spatially selective formation of Ag/Ag2S was induced within the hydrogel. Specifically, Ag+ was in situ reduced to metallic Ag by the surface-enriched hydrophilic VIM-CAT, while Ag2S was generated in the middle region under the induction of hydrophobic TBA-MA, leading to the spontaneous formation of a sandwich-like layered architecture. Owing to the introduction of Ag2S, the hydrogel exhibited an enhanced near-infrared (NIR) photothermal response and achieved antibacterial efficiencies of 99% against Escherichia coli and 98% against Staphylococcus aureus. Meanwhile, the surface Ag layer endowed the hydrogel with good electrical conductivity and stable strain sensitivity, enabling real-time monitoring of human motions, including finger bending, frowning, and wrist bending. This work provides a simple strategy for constructing layered hydrogels with integrated photothermal antibacterial and flexible sensing functions and offers new insight into anti-infective flexible electronics.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yandong Che,Qianpeng He,Aoyun Yuan,Jie Zhou,Jiacheng Ding,Tõnu Pullerits,Qian Zhang,Yanqiu Yang,Wenjie Li,Peng Song
Integrating pollutant detection and degradation into a single material platform is highly desirable for the efficient treatment of dye-contaminated wastewater. However, simultaneously achieving sensitive detection and efficient photocatalytic activity remains challenging because these functions involve distinct interfacial processes. In this work, an Ag NPs@Cu-V 2 O 5 hybrid was prepared through wet-chemical synthesis and calcination of Cu-V 2 O 5 , followed by ultrasonic coupling with preformed Ag nanoparticles. Cu incorporation modulated the local electronic environment of V 2 O 5 , while the supported Ag nanoparticles provided plasmonic SERS-active sites. XPS binding-energy shifts were consistent with interfacial electronic redistribution, FDTD simulations revealed pronounced local-field amplification around the Ag nanoparticles, and energy-level analysis indicated accessible interfacial charge-transfer pathways under 532 nm excitation. Using colorless, non-resonant 4-MBA as a control probe, the hybrid produced a higher Raman response than the Ag NP reference under equivalent Ag loading, indicating that the enhancement was not solely dependent on the molecular pre-resonance behavior of MB. The hybrid enabled MB detection down to 1 × 10⁻⁹ mol L⁻¹ , with good spatial uniformity and approximately 80% signal retention after 28 days. After correction for dark adsorption, it achieved an MB degradation efficiency of 82.3% after 60 min of visible-light irradiation and exhibited higher photocatalytic activity than pristine V 2 O 5 and Cu-V 2 O 5 . These results demonstrate a plasmonic–semiconductor platform that integrates SERS sensing and photocatalytic remediation through Ag-induced local-field amplification, Cu-related electronic modulation, and Ag/Cu-V 2 O 5 interfacial interactions.
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POLYMERS FOR ADVANCED TECHNOLOGIES
·
2026
·Vol. 37
·期 7
·e70678
·
IF 3.8
Yu Zeng,Lu Tang
Dielectric elastomer has attracted much attention for its promising application in soft robots, actuators, and generators. Nevertheless, fluorosilicone rubber (FSR), as a typical dielectric elastomer matrix, possesses inherently low dielectric permittivity, severely limiting its electromechanical actuation performance. To address this issue, two-dimensional (2D) MXene nanosheets and zero-dimensional (0D) Ag nanoparticles were incorporated into FSR via mechanical mixing and hot-pressing to prepare FSR/MXene/Ag composites. Results show that MXene and Ag were dispersed well in the FSR matrix and the composites were thermally stable up to 390°C. A relatively high dielectric permittivity of 16.63 (2.49 times of pure FSR) was achieved at 10 3 Hz for the composite with 1.2 phr (parts per hundred of rubber) MXene and 3.2 phr Ag, while the loss tangent remained below 0.012. This can be attributed to the synergistic effects of the hybrid fillers where the 0D Ag nanoparticles effectively suppress the agglomeration of 2D MXene nanosheets, while the heterogeneous interfaces between MXene/Ag and FSR significantly enhance interfacial polarization. Furthermore, the FSR/MXene/Ag composites not only show improved tensile strength and elongation at break with decreased elastic modulus, but also exhibit enhanced electromechanical sensitivity, achieving a large electromechanical strain of 16.05% (205% increment of pure FSR) under an electric field of 40 kV mm −1 . This work provides a feasible strategy for designing dielectric elastomers with enhanced electromechanical performances.
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JOURNAL OF NANOPARTICLE RESEARCH
·
2026
·Vol. 28
·期 7
·180
·
IF 3.5
Ali Zubair,Khan Iltaf,Wang Chunjuan,Ali Farman,Mujahid Laiba,Zaman Saeed,Arif Umar,Chen Xiaohu,Ali Nisar
Dyes represent a major class of water pollutants worldwide, posing significant threats to aquatic ecosystems and the environment due to their discharge into industrial wastewater without treatment. Thus, before releasing organic colors and their derivatives into rivers, they must be degraded using heterogeneous photocatalysts. Similarly, burning fossil fuels releases massive amounts of CO 2 into the atmosphere, exacerbating global warming and environmental devastation. Herein, we report the design and fabrication of Ag/CdSe/g-C 3 N 4 (i.e., Ag/CdSe/CN) as a highly efficient photocatalyst for the degradation of Toluidine Blue dye and CO 2 conversion to value-added products. X-ray diffraction analysis confirmed the crystalline nature of the as-synthesized photocatalyst. SEM and TEM analysis revealed that Ag and CdSe nanoparticles are uniformly dispersed on the surface of a 2D sheet-like structure for CN. The photocatalytic performance of the photocatalysts was explored at different parameters such as dye and photocatalyst doses, pH, and time. The as-fabricated Ag/CdSe/CN photocatalyst revealed exceptional performance for Toluidine Blue dye degradation under visible light irradiation, with a notable 92.3% degradation at pH 13, which is remarkably higher than those of the CdSe/CN, CdSe, and CN photocatalysts. Additionally, the Ag/CdSe/CN photocatalyst revealed outstanding performance for visible light catalytic CO 2 conversion to CH 4 (i.e., 9 μmol g⁻ 1 h⁻ 1 ) and CO (28 μmol g⁻ 1 h⁻ 1 ), in comparison to the reference samples. This work will provide a new route for the design and fabrication of highly efficient photocatalysts for environmental applications. Graphical abstract Graphical abstract showing the design of Ag/CdSe/g-C 3 N 4 nanocomposite for CO 2 conversion and dye degradation
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Rongpei He,Zhongxu Li,Ran You,Yujie Xiao,Xiaoyuan Xu,Bing Yan,Juan Du,Baozhan Zheng
Surface-enhanced Raman scattering (SERS) has widespread applications for sensitive detection due to its non-destructive nature, but is still limited by the lower signal sensitivity and reproducibility caused by uncontrolled hotspot distribution on substrates. To address this challenge, a reliable and highly sensitive SERS substrate was developed by in-situ fabrication of well-defined Au-core Ag-shell nanocubes (Au@Ag NCs) on eggshell membrane (ESM-Au@Ag). Notably, the precisely controlled size and morphology of Au@Ag NCs by tuning the synthesis conditions led to significantly enhanced SERS performance. The obtained ESM-Au@Ag exhibited remarkable SERS activity, excellent signal reproducibility, and good stability for crystal violet (CV) detection, achieving an ultralow limit of detection of 1.0 × 10⁻ 10 mol·L −1 and a high analytical enhancement factor of 1.6 × 10 8 . Finite-difference time-domain (FDTD) simulations revealed that this superior performance originates from the significantly localized electromagnetic field enhancement at the sharp edges/corners of the nanocubes, along with their uniform distribution on ESM substrate. Furthermore, the ESM-Au@Ag also showed high sensitivity toward multiple analytes, including Rhodamine 6 G, trinitrophenols, and adenine, indicating its potential for practical applications in environmental monitoring, food safety, clinical diagnosis, and public security. This work opens up a new avenue for designing high-performance SERS substrates with exceptional sensitivity, reproducibility, and stability.
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