Nanoscale
·
2025
·Vol. 17
·期 37
·21665-21678
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IF 5.1
Junhao Xie,Hongxu Liu,Shulin Sun
Electronic capacitor films based on polymer matrices and inorganic nanofillers capable of storing more energy play a crucial role in advanced modern electrical industries and devices. Herein, a series of nanocomposite films composed of “core–shell–dot” BNNs-PDA@Ag hybrid structures with multiple breakdown strength enhancement mechanisms as fillers and methyl methacrylate-co-glycidyl methacrylate (MG) copolymers as matrices were successfully synthesized. The introduced 2D and wide-bandgap BNNs not only enhanced the breakdown strength by taking advantage of their excellent physical properties, but also further improved their energy storage properties both at ambient and elevated temperatures through the formation of deeper traps at the organic–inorganic interface. In addition, especially under a strong electric field, the Coulomb-blockade effects of Ag nanoparticles immobilized by a PDA shell layer in the heterostructure of BN nanosheets avoided the breakdown. Ultimately, the energy density of 2.0 BNNs@PDA-Ag nanocomposite films was 9.35 J cm−3 at 640 MV m−1 and room temperature with considerable efficiency (86%) under multiple breakdown strength enhancement mechanisms. Even at 90 °C and 120 °C, it still maintained energy densities of 5.46 J cm−3 and 4.32 J cm−3 with efficiencies of 84.79% and 76.81% under 460 MV m−1 and 380 MV m−1, respectively.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2016
·
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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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Jiayong Zhang,Xiangqian Shen,Jun Xing,Shuguo Yu,Mengge Li,Ding Ma,Yuting Sun,Rong Wu,Bin Yao
Air-processed kesterite solar cells show excellent prospects for commercial application because they are suitable for large-scale production. This study shows how the power conversion efficiency (PCE) of (Cu, Ag) 2 ZnSn(S, Se) 4 solar cells can be improved by adjusting the annealing time during the selenization process at a low temperature of 70 °C. Enhancement of PCE is achieved when the annealing time is 240 s. The primary determinant of enhanced PCE is a reduction in reverse saturation current density (J 0 ) and ideality factor (A). Examination of depth characterization indicated that the decrease in J 0 and A can be ascribed to the inhibition of [2Cu Zn + Sn Zn ] defects cluster, which is mainly accountable for the band tail states, and the suppression of interface recombination .
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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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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 2
·81
·
IF 5.3
Zhang Haili,Peng Man,Lu Anjiang,Peng Xishun,Wang Cunwei,Zu Caizhen,Bai Zhongchen
A surface-enhanced Raman scattering (SERS) sensor of Au/Ag nanoparticles (NPs) grown on ZnO/polypyrrole@Poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate) (PPy@PEDOT:PSS) film for detecting norfloxacin (NFX) residues in milk is presented. The ZnO/PPy@PEDOT:PSS film was prepared by the electrochemical deposition method. Subsequently, Ag NPs and Au NPs were deposited on the surface of ZnO/PPy@PEDOT:PSS film to form a Au/Ag/ZnO/PPy@PEDOT:PSS film by an electrochemical deposition process and the magnetron sputtering process, respectively. Owing to the charge transfer between the SERS substrate and the NFX molecules, this SERS sensor could effectively identify low-concentration NFX molecules with a limit of detection (LOD) of 0.84 nM. Moreover, it could also recognize NFX residues in milk with recoveries of 91.2% to 108.4%. The SERS sensor of Au/Ag/ZnO/PPy@PEDOT:PSS film had a high sensitivity, excellent long-term stability, and significant potential in food safety monitoring applications. Graphical abstract
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Materials Today Communications
·
2026
·
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
·
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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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Haiqiang Liu,Shuying Xu,Yunhan Yue,Yinsha Wei,Ri Qiu,Yibo Ouyang,Peng Wang
Titanium metal and alloys, despite their intrinsic corrosion resistance, are prone to localized corrosion and severe biofouling when deployed in harsh marine environments, which severely compromises their long‑term reliability. To address these issues, we report a multi‑step interfacial engineering strategy for the construction of a slippery liquid‑infused porous surface (SLIPS) on TA2 titanium metal, wherein an electrodeposited dendritic Ag architecture serves as the pivotal multifunctional component. This dendritic Ag skeleton plays a triple role. It provides a rough hierarchical scaffold that, after thiol‑induced superhydrophobicity, firmly locks the infused dimethylsilicone oil to form a stable SLIPS. It acts as a reservoir for sustained Ag + release, conferring long‑lasting antibacterial activity. Moreover, its high thermal conductivity facilitates rapid heat dissipation, significantly reducing ice adhesion. Benefiting from this synergistic design, the resulting coating exhibits outstanding corrosion resistance, with a charge transfer resistance R ct of 4.61 × 10 7 Ω·cm 2 , which is two orders of magnitude higher than that of bare TA2 (7.52 × 10 5 Ω·cm 2 ). Concurrently, the integrated Ag⁺ release and thermal management functionalities endow the coating with potent anti‑biofouling (with inhibition efficiency larger than 90%) and high anti‑icing performance. This work demonstrates that the dendritic metallic skeleton can simultaneously act as a physical barrier, a chemical active source, and a thermal conductor, offering a novel and versatile approach for protecting Ti in the marine environment. Download: Download high-res image (144KB) 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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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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RSC Advances
·
2025
·Vol. 15
·期 44
·37273-37287
·
IF 4.6
Ya Gao,Haoping Huo,Jianlin Li,Nengqing Wang,Haonan Gao,Yingbo Wang
Eradicating cutaneous infections induced by pathogenic microorganisms, such as bacteria, fungi, and viruses, via conventional topical drug delivery is challenging owing to limited epidermal penetration. To overcome this limitation, we fabricated a poly(ethylene glycol) diacrylate (PEGDA) microneedle array coated with a carboxymethyl chitosan (CMC) film embedded within situ-synthesized polydopamine-modified silver nanoparticles (PDA@Ag NPs) for enhanced antibacterial efficacy. This design utilizes microneedle (MN)-mediated skin perforation to enhance drug permeation, combined with rapid film dissolution for the efficient release of the payload. The experimental findings revealed that the PDA@Ag-CMC/PEGDA MNs possess favorable biocompatibility along with dual photothermal and photodynamic functionalities. Mild photothermal therapy (PTT) triggered by these MNs promotes the production of antibacterial reactive oxygen species (ROS), resulting in a high antibacterial rate of up to 98% against both Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) under NIR irradiation at a PDA@Ag concentration of 40 μg mL−1. To assess transdermal delivery performance, lidocaine hydrochloride (LiH) (78 μg per MN array) was incorporated into the CMC film as a model drug. Physiological conditions confirmed accelerated LiH release from the PDA@Ag-LiH-CMC/PEGDA system upon aqueous exposure. This minimally invasive approach demonstrated promising broad-spectrum antibacterial activity, suggesting that the PDA@Ag-LiH-CMC/PEGDA platform could serve as a viable clinical solution for managing polymicrobial skin infections and alleviating wound pain.
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