Surfaces and Interfaces
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2025
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IF 6.3
Xiaohui Ren,Zhen He,Qiao Kang,Jiahao Li,Caoyuan Guo,Wenjie Ma,Zhonglin Xiang
The discharge of textile wastewater into the water environment caused continuous pollution and poses a potential threat to public health. It is meaningful to develop an inexpensive, effective and pollution-free method for the ultrasensitive detection of residual Congo red (CR) in textile wastewater. Ag particles were prepared using ascorbic acid reduction method with glutamine as the guiding agent. Then, Ag particles were modified with 3-aminopropyltriethoxysilane to bring -NH 2 onto the surface of the Ag particles. Surface imprinting polymerization method for coating imprinted layer on Ag-NH 2 surface using CR as the template molecule (Ag@MIPs). The morphological characteristics of Ag@MIPs was performed on Scanning Electron Microscopy equipped with Energy Dispersive Spectrometer, X-ray Diffraction, Fourier Transform Infrared Spectroscopy, etc. The enhancement effect of CR was researched when using Ag@MIPs as SERS substrate. Examining the SERS substrate for detecting different concentrations of CR, it was found that the minimum concentrations of Ag and Ag@MIPs were 1.0 × 10 –7 mol l -1 and 1.0 × 10 –9 mol l -1 , respectively. Besides, Ag@MIPs shown satisfactory selectivity and sensitivity to CR instead of methylene blue due to the imprinted holes that match template molecules. This method provides an ultrasensitive method for the qualitative and semi-quantitative detection of CR in textile wastewater.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2016
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IF 8.328
Yuxi Gao,Anqi Duan,Shuang Liu,Xiaodong Wu,Wei Liu,Min Li,Shougang Chen,Xin Wang,Duan Weng
Three nanocubic Ag/Ce x Nd 1- x O 2 catalysts were synthesized to evaluate the influence of Nd doping on catalyst practicability. It was observed that Nd doping generated excessive ceria surface oxygen vacancies, but reduced the bulk oxygen vacancies . These variations in oxygen vacancies suppress the utilization of ceria bulk oxygen, and induce the formation of less active O 2− species instead of O 2 − , resulting in a low soot oxidation activity. However, the introduction of Nd can inhibit Ag sintering and thus enhance the catalysts’ thermal stability effectively. As a consequence, Ag/Ce 0.95 Nd 0.05 O 2 nanocubes make a good balance between the catalyst activity and stability. Moreover, it was observed that catalyst deactivation during soot oxidation becomes more obvious when the catalysts and soot are not in close contact.
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2013
·Vol. 15
·期 40
·17560-17569
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IF 3.829
Liyuan Xie,Xingyi Huang,Bao-Wen Li,Chunyi Zhi,Toshikatsu Tanaka,Pingkai Jiang
Dielectric polymer nanocomposites with high dielectric constant have wide applications in high energy density electronic devices. The introduction of high dielectric constant ceramic nanoparticles into a polymer represents an important route to fabricate nanocomposites with high dielectric constant. However, the nanocomposites prepared by this method generally suffer from relatively low breakdown strength and high dielectric loss, which limit the further increase of energy density and energy efficiency of the nanocomposites. In this contribution, by using core–satellite structured ultra-small silver (Ag) decorated barium titanate (BT) nanoassemblies, we successfully fabricated high dielectric constant polymer nanocomposites with enhanced breakdown strength and lower dielectric loss in comparison with conventional polymer–ceramic particulate nanocomposites. The discharged energy density and energy efficiency are derived from the dielectric displacement–electric field loops of the polymer nanocomposites. It is found that, by using the core–satellite structured Ag@BT nanoassemblies as fillers, the polymer nanocomposites can not only have higher discharged energy density but also have high energy efficiency. The mechanism behind the improved electrical properties was attributed to the Coulomb blockade effect and the quantum confinement effect of the introduced ultra-small Ag nanoparticles. This study could serve as an inspiration to enhance the energy storage densities of dielectric polymer nanocomposites.
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高影响因子
Materials Today Communications
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2026
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IF 4.9
Yang Xiang,Haoqian Guo,Kun Jia,Zixin Zhao,Yong You,Yuqi Guo,Xulin Yang,Ying Li,Mengna Feng,Kui Li,Pan Wang
Self-healing coatings have attracted considerable attention for metal protection. Specifically, the development of coating fabrication technologies that provide multiple functional properties can effectively mitigate the substantial economic and resource losses caused by corrosion. In this study, a novel sandwich-structured composite coating was realized by functionalizing different layers. The core-shell nanofibers interlayer embedded between two epoxy (EP) resin layers were prepared via coaxial electrospinning, with polyarylene ether nitrile (PEN) polymer serving as the shell, and benzotriazole/oleic acid (BTA/OA) encapsulated as the corrosion inhibitor within the core. Adhesion testing demonstrated that the fabricated composite coating exhibited strong adhesion between the layers as well as to the substrate, thereby satisfying the Grade 1 requirement. Owing to the well loading of BTA/OA inhibitors within the polymer shell and the efficient released through the microvascular network, electrochemical impedance spectroscopy results indicated that the impedance reached 6.31 × 10 5 Ω·cm 2 after 14 days of immersion in a 3.5% NaCl solution, indicating effective self-healing anti-corrosion performance. Additionally, the surface EP layer was modified through blending with and surface embedding of silver-based (Ag-based) glass antibacterial agents, achieved antibacterial efficacies exceeding 99% against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). Overall, this study presents an efficient strategy for fabricating sandwich-structured anti-corrosion coatings that integrate self-healing capability and antibacterial activity, and robust structural stability, thereby demonstrating good potential for advanced metal protection applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Uzair Ahmed Kolachi,Rajapriya Andavar,Anuj Kumar,Yi He,Ali Raza,Yanzhi Sun,Junqing Pan
Ag-doped bimetallic MOF-derived carbon nanorods made via coordination-pyrolysis. • Hierarchical porous carbon achieves an ultrahigh surface area of 2349 m 2 g −1 . • Ag-BMNR-2 delivers 364.7 F g −1 at 1 A g −1 , retaining 95.6% after 100,000 cycles. • As SIB anode, Ag-BMNR-2 shows 458.6 mAh g −1 with 90.1% retention over 700 cycles. • DFT reveals Ag lowers Na + diffusion barrier via an Ag-Ag-Ag electron network. The electrode-electrolyte interface engineering is paramount to advancing bifunctional porous carbon materials for zinc-hybrid supercapacitors (ZHSCs) and sodium-ion batteries (SIBs). Herein, a coordination-pyrolysis method is proposed to synthesize Ag-nanoparticle-decorated bimetallic MOF-derived carbon nanorods (Ag-BMNR-2), wherein the interfacial architecture is synergistically engineered through three mechanisms: (i) evenly dispersed Ag nanoparticles introduce electron-rich colloidal sites that reduce charge-transfer resistance and accelerate interfacial electron transport via a continuous Ag → Ag → Ag conductive network; (ii) chemical activation generates oxygen-rich surface functionalities (C O, C O, O H) that enhance electrolyte wettability and provide dipole-ion coupling sites for Na + coordination; and (iii) a hierarchical micro-mesoporous architecture maximizes ion-accessible interfacial area. Theoretical calculations and in/ex situ characterization confirm that Ag doping lowers the Na + diffusion barrier, strengthens adsorption affinity, and elevates the electronic density of states near the Fermi level. Benefiting from this synergistically engineered interface, Ag-BMNR-2 delivers 364.7 F g −1 at 1 A g −1 , retaining 95.6% capacity after 100,000 cycles in SCs, and achieves 458.6 mAh g −1 at 0.05 A g −1 with 90.1% capacity retention over 700 cycles in SIBs (ICE: 69.9%). This work establishes interface engineering of Ag-decorated hierarchical porous carbon as a versatile strategy for dual-functional energy storage materials. The figure shows the graphical illustration of the preparation of the Ag-doped bimetallic MOF-derived carbon (Ag-BMNR). Download: Download high-res image (190KB) Download: Download full-size image Shows the graphical illustration of the preparation of silver-doped bimetallic MOF nanorods (Ag-BMNR-2).
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Foods
·
2026
·Vol. 15
·期 15
·2598
·
IF 6
Qingqing Li,Xuecheng Zhang,Shurun Chen,Bowen Guo,Qingwen Cao,Xinyue Feng,Xiaoping Yu,Xiaoyu Jia,Biao Zhang,Hongqing Wang
Acetamiprid (ACE) is a widely used neonicotinoid insecticide with potential health risks due to its persistence in the environment and bioaccumulation in plant-based foods. In this study, an improved dual-mode lateral flow immunochromatography assay (DMLFIA) was established for the sensitive detection of ACE residues in plant-based foods using Au@Ag@Pt NPs as dual-function signal probes. In the colorimetric mode (Mode 1), with the inhibition rate as the vertical coordinate and the ACE concentrations as the horizontal coordinate, the linear detection range of the colorimetric mode was 0.1–3000 μg/L with the detection limit of 0.08 μg/L. In the photothermal mode (Mode 2), the temperature values obtained via smartphones integrated thermal imager showed a linear relationship with 0.1–3000 μg/L of ACE, and the detection limit is 0.1 μg/L. The cross-reactivity rate of the developed DMLFIA with other structural analogs and functional substances was less than 0.39%. The recovery rate of the developed DMLFIA used in spiked plant-based foods was 81.1–99.4%, with relative standard deviations (RSD) of 1.3–10.7%. The detection results of this constructed DMLFIA showed good consistency with those obtained by HPLC and ELISA. The constructed DMLFIA provides a selective, sensitive and rapid detection tool for ACE in different scenarios in plant-based foods.
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PubMed
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Aidi Xie,Wusong Geng,Chun Chen,Yunxia Zhang,Haimin Zhang,Guozhong Wang
A mesoporous SiO 2 -supported Ag catalyst co-modified with B 2 O 3 and amino groups (B/Ag@NH 2 −MS) was synthesized through the grafting of amino group onto silica and subsequent impregnation with 10 wt.% Ag and 5 wt.% B 2 O 3 . Density functional theory (DFT) calculations and Bader charge analysis showed that boron (B) doping triggered extensive electronic changes in the modified support. It implied that B atoms gained a partial positive charge, showing Lewis acidic nature, while nearby Ag atoms had a partial negative charge. This electronic redistribution led to a downward movement of the Ag d -band center and a decrease in the work function, which in turn modulated the binding energies of adsorbates and reduced the desorption barrier of MG. Such dual-site cooperation strengthened the adsorption and polarization of the DMO carbonyl group at the adjacent Ag and B sites, thus promoting the activation of the C = O bond. Moreover, the anti-sintering capacity of Ag nanoparticles could be ascribed to their efficient stabilization mechanism, resulting from the synergistic action of oxygen-bridged B/O/Ag species and –NH 2 functional groups.Consequently, it is noted that the catalyst is able to maintain a conversion of about 99% DMO and a selectivity of about 94% MG, and it was able to maintain a conversion rate of over 96% for >350 h. These observations highlight a dual-site electron synergy strategy for developing very active and long-lasting Ag catalysts for ester hydrogenation.
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Applied Materials Today
·
2026
·
IF 7
Xiaowan Zhao,Qikai Qiao,Yuanqing Li,Aiqin Zhang,Hong Guo,Jing Guo,Haixia Zhang,Jianjun Lu
To address the issue of secondary contamination caused by the lack of antibacterial properties in polypropylene (PP) meltblown nonwoven fabrics while preserving its core filtration performance, this work employed an immersion-ultrasonic method to construct Ag@T-ZIF-8 antibacterial materials with a core-shell structure. Subsequently, PP/Ag@T-ZIF-8-G composite meltblown fibers was prepared via covalent modification and meltblown spinning technology. The systematic characterization of Ag@T-ZIF-8 was conducted in terms of its chemical structure, microstructure, and photocatalytic antibacterial performance. The effects of Ag@T-ZIF-8 on the antibacterial, filtration and comfort properties of the composite melt-blown nonwoven fabrics were investigated, and the enhancement mechanisms of antibacterial and filtration were revealed. The results indicate that Ag@T-ZIF-8 exhibits a uniform core-shell structure with a particle size of 40∼50 nm and a specific surface area of 531.83 m²/g. At an antibacterial concentration of 200 mg/L, it achieves a 99.99% antibacterial rate against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) within 8 min in the dark or 4 min under illumination. Compared with PP meltblown nonwoven fabrics, it demonstrates 73.31% in filtration efficiency for particles with a pressure drop of only 37.3 Pa. When Ag@T-ZIF-8 loading reaches 1 wt%, the composite meltblown fabrics completely eliminates E. coli and S. aureus after 160 min of illumination or 240 min in the dark. This outstanding comprehensive filtration performance stems from a synergistic filtration mechanism combining mechanical filtration, ionic adsorption, and dual-mode antibacterial action under light or dark condition. Integrating superior filtration capabilities, broad-spectrum antibacterial properties, and wear comfort, PP/Ag@T-ZIF-8-G meltblown nonwoven fabrics deliver a highly efficient integrated antibacterial-filtration solution for the medical protective field.
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MOLECULES
·
2026
·Vol. 31
·期 10
·1737
·
IF 5.1
Juan Xu,Jinju Ma,Lanxiang Liu,Baoshan Tang,Hong Zhang,Wenwen Zhang,Zhengjun Shi
Bamboo is a renewable and fast-growing biomass resource with limited utilization and service life owing to its susceptibility to mold. Conventional nano-modification methods, particularly two-step approaches, are limited by weak interfacial bonding between nanoparticles and the bamboo substrate, complex processing, and an inability to simultaneously enhance antimildew performance and dimensional stability. To address these limitations, we developed a one-step hydrothermal method involving the use of tannic acid (TA) for in situ fabrication of ZnO/TA/Ag composite particles on bamboo surfaces. Process parameters were optimized to 100 °C, 10 h, and a zinc acetate-to-tannic acid molar ratio of 20:1. The modified bamboo was characterized using Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, scanning electron microscopy coupled with energy-dispersive spectroscopy, and thermogravimetric analysis. We demonstrated that ZnO/TA/Ag composite particles were successfully loaded onto the bamboo surface, thus improving the all-around performance of the bamboo simultaneously. Antimildew activity against Aspergillus niger and Penicillium citrinum increased from grade 4 in untreated bamboo to grades 1 and 0, respectively; water absorption decreased by 52.85%, and anti-swelling efficiency reached 30.41%, indicating improved mold resistance and dimensional stability. Thus, our technique could serve as a green and efficient one-step in situ modification strategy for high-performance functionalization of bamboo, making it suitable for applications in humid outdoor and indoor environments.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xiali Guan,Xinbo Wei,Qian Wang,Bing Chen,Yu Wang,Xiaonan Yang
A crosslinker-free PVA/CS hydrogel with polydopamine-engineered Ag nanoparticles was developed. • The hydrogel shows strong tissue adhesion, mechanical robustness, and self-healing for long-term wound application. • PDA enables sustained Ag⁺ release and stable NIR-responsive photothermal heating. • Ag@PDA0.5 balances antibacterial efficacy, photothermal activity, and cytocompatibility. • NIR-mediated photothermal treatment reduces inflammation and promotes vascularization in MRSA-infected diabetic wounds. Chronic diabetic wounds complicated by multidrug-resistant bacterial infections remain a persistent clinical challenge, requiring advanced wound dressings that integrate effective antibacterial protection with tissue regeneration. Herein, we developed a biocompatible and crosslinker-free hydrogel system composed of polyvinyl alcohol (PVA) and chitosan (CS), integrated with polydopamine-coated silver nanoparticles (Ag@PDA). The PDA coating, together with the hydrogel matrix, regulated Ag + release, thereby maintaining antibacterial activity while reducing silver-associated cytotoxicity. The resulting PVA/CS-Ag@PDA hydrogel exhibited favorable mechanical properties, tissue adhesion, cytocompatibility, antioxidant activity, and broad-spectrum antibacterial efficacy. In vitro and in vivo experiments collectively demonstrated the pro-regenerative and immunomodulatory effects of the hydrogel. In vitro, the hydrogel promoted endothelial cell migration and regulated macrophage inflammatory responses, as evidenced by reduced pro-inflammatory markers and enhanced repair-associated gene expression. In an MRSA-infected diabetic rat wound model, PVA/CS-Ag@PDA treatment suppressed bacterial growth, attenuated inflammatory infiltration, downregulated pro-inflammatory genes including Il6 and Tnf, and upregulated repair-associated genes including Il10 and Mrc1. Moreover, Ag@PDA endowed the hydrogel with concentration-dependent near-infrared (NIR)-triggered photothermal behavior. Among the tested formulations, PVA/CS-Ag@PDA0.5 generated a moderate and stable photothermal response and was selected for NIR-assisted antibacterial treatment. Under NIR irradiation, PVA/CS-Ag@PDA0.5 further enhanced bacterial eradication against MRSA and E. coli . NIR-assisted treatment also reduced CD45 + inflammatory cell infiltration and CD68 + macrophage accumulation, enhanced CD206-associated reparative signaling, and improved epidermal remodeling, collagen deposition. This work presents a rational strategy for engineering silver-based hydrogel dressings with controlled Ag + release, NIR-enhanced antibacterial activity, and improved regenerative efficacy for infected diabetic wound repair. Download: Download high-res image (327KB) Download: Download full-size image
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Materials Today Chemistry
·
2026
·
IF 7.4
Chunyan Fan,Zehao Zang,Yao Tang,Yahui Cheng,Lanlan Li,Xiaofei Yu,Xiaojing Yang,Zunming Lu,Xinghua Zhang,Hui Liu
Bifunctional N,P-codoped Ag catalyst achieves outstanding seawater electrolysis performance. • Enhanced HER via optimized H adsorption and H–H coupling enabled by N,P codoping. • In situ generated PO 4 3− activates lattice oxygen, lowers OER barrier, suppresses Cl − adsorption. Herein, we present a bifunctional N,P-co-doped Ag (N,P–Ag) catalyst synthesized via one-step electrodeposition for efficient alkaline seawater splitting. The catalyst achieves low overpotentials of 260 mV@50 mA cm −2 for oxygen evolution reaction (OER) and 49 mV@10 mA cm −2 for hydrogen evolution reaction (HER), along with excellent reaction kinetics and long-term stability (sustained operation for 200 h at 100 mA cm −2 ). DFT calculations disclose that N, P co-doping enhances HER activity by disrupting Ag's electronic configuration to create new hybrid orbitals and delocalized electronic states, which in turn optimize H* adsorption and accelerate H–H bond formation. In-situ Raman spectroscopy captures the surface restructuring process during OER that leads to the formation of the active phase PO 4 3- -AgO. The lattice oxygen-mediated mechanism (LOM) enables lattice oxygen to participate directly in the OER process, helping to optimize the energy levels of intermediate reactions and weaken Cl − adsorption, thereby effectively suppressing chloride ion corrosion. This work demonstrates a combined approach of non-metallic doping for electronic tuning and in-situ anion modification for lattice oxygen activation, providing a viable route to achieve efficient and corrosion-resistant seawater electrolysis. By modulating electron conduction via N/P doping, localized charge enrichment zones are created around Ag atoms as HER-active sites, while in situ-generated PO 4 3− activates lattice oxygen, lowering the reaction barrier and inhibiting chloride corrosion. Download: Download high-res image (357KB) Download: Download full-size image
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Food Additives and Contaminants Part A-Chemistry Analysis Control Exposure & Risk Assessment
·
2019
·
IF 2.17
Tehseen Yaseen,Hongbin Pu,Da-Wen Sun
In this study, a surface-enhanced Raman scattering (SERS) approach based on silver-coated gold nanoparticles (Au@Ag NPs) was established for rapid detection of multiple organophosphorus pesticides (triazophos and methyl-parathion) in peach fruit. The Raman enhancement of Au@Ag NPs for detecting organophosphorus pesticides was stronger than those of single Ag and Au NPs. It was revealed that core size of Au NPs was a critical parameter affecting the enhancement of Raman signals by joining two plasma resonance absorptions. The Au@Ag NPs with 26 nm Au core size and 6 nm Ag shell thickness showed significant Raman enhancement, especially by the creation of hot spots through NPs aggregation induced by connection between Au@Ag NPs and target molecules. The detection limits of triazophos and methyl-parathion in peach were 0.001 mg/kg. Good recovery (93.36 to 123.6 %) and high selectivity of the SERS activity allowed excellent precision for the detection of the triazophos and methyl-parathion in peach. Compared to earlier studies, the current approach was rapid, inexpensive and simple without lengthy sample pre-treatment. This study revealed that the proposed method could be employed for the analysis of trace contaminants such as triazophos and methyl-parathion in many food matrices.
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危险品化学品经营许可证（带存储）