COMPOSITES COMMUNICATIONS
·
2026
·
IF 8.6
Tongtao Zhi,Xuegang Wang,Pengcheng Zhang,Jian Wang,Yaqi Yang,Hongji Duan
PPS-PPTA-Ag laminated films were fabricated for durable EMI shielding. • Ag-metallized PPTA fabric forms a continuous conductive textile network. • PPS encapsulation enhances structural integrity and environmental stability. • The composite delivers 64.3 dB EMI SE with excellent shielding durability. • Rapid and stable low-voltage Joule heating is enabled by the Ag network. The growing demand for lightweight and portable electronic products is driving the development of electromagnetic interference (EMI) shielding materials with superior and stable shielding effectiveness (SE). Herein, silver (Ag)-metallized poly (p-phenylene terephthalamide) (PPTA) fabric/poly (phenylene sulfide) (PPS) laminated films were fabricated by polydopamine-assisted electroless Ag deposition and hot pressing for durable EMI shielding. The Ag coating transformed insulating PPTA fabric into a continuous conductive textile network, while PPS encapsulation endowed the composite with thermal stability, solvent resistance, and structural protection. The resulting PPS-PPTA-Ag film exhibited a high EMI SE of 64.3 dB in the X-band, with only a 0.6 dB decrease after 1000 bending cycles. It also retained a high SE of 62.9 dB after flame exposure and showed negligible degradation after 7 days of immersion in acidic solution, alkaline solution, and common organic solvents. Moreover, the laminated film demonstrated excellent tensile strength (∼335 MPa) and improved tribological performance. Benefiting from the continuous Ag conductive network, it enabled rapid low-voltage Joule heating, reaching 91.2 °C within 50 s at 2.0 V, along with stable cyclic and long-term electrothermal performance. These results indicate that the PPS-PPTA-Ag composite film shows great potential for durable EMI shielding and electrically driven thermal management applications.
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高影响因子
ACS Applied Materials & Interfaces
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2026
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IF 7.8
Zhenfeng Li,Yifan Zhao,Zixu Wang,Jinyang Li,Chenglong Zhou,Peng He,Shuye Zhang
Oxidation susceptibility and insufficient service reliability remain major limitations for Cu-based conductive inks in flexible electronics. Here, size-tunable Cu@Ag core-shell nanoparticles were processed by millisecond intense pulsed light (IPL) sintering to establish a rapid route toward conductive and durable flexible electrodes. Comparative finite-element thermal analysis and electrical measurements establish a practical IPL processing window, while electron microscopy and complementary diffraction analysis support energy-dependent interparticle connection and localized Cu-Ag interfacial reconstruction without assuming homogeneous alloying throughout the film. The sheet resistance reaches a minimum of 0.06 Ω/sq at 5.0 J/cm2, whereas 4.5 J/cm2 is selected as the practical baseline because it provides a more favorable balance among conductivity, film integrity, environmental stability, flexibility, adhesion, and limited cumulative substrate heating. Films processed within this window maintain low resistance during damp-heat and cryogenic exposure and exhibit stable electrical behavior during repeated bending. At the device level, the 4.5 J/cm2 electrode enables a contact-separation triboelectric nanogenerators (TENG) with an open-circuit voltage of 275.45 V and a peak power density of 0.71 W/m2. In otherwise identical alternating-current electroluminescent (ACEL) devices, increasing the electrode-processing energy from 1.5 to 4.5 J/cm2 markedly increases luminance, directly linking the IPL-defined electrode state to device performance. The integrated patterned platform further enables tactile-position visual feedback. These results establish an evidence-based processing-thermal response-structure-reliability-device relationship for IPL-sintered Cu@Ag NPs flexible electrodes.
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ACS Applied Optical Materials
·
2025
·
IF 3.8
Xiaolong Yin,Tong Shi,Jiacheng Li,Yu Wang,Jizhe Song,Hongyan Zhao,Zhixiu Wang,Cuixia Bi
In this work, Au@Ag nanostars were successfully synthesized via a seed-mediated growth method, using presynthesized Au nanostars as structural templates. The structure of the Au@Ag nanostars can be precisely controlled by adjusting the concentration of AgNO3 and Au nanostar seeds. The structural configuration of the Au@Ag nanostars can be precisely tuned from partially encapsulated cores to fully encapsulated architectures. The Au@Ag nanostars display tunable localized surface plasmon resonance (LSPR) characteristics in response to changes in the Ag shell thickness. The Raman enhancement of 4-ATP indicates that surface-enhanced Raman spectroscopy (SERS) performs optimally when Ag fully encapsulate the Au nanostars, confirming the results from FDTD theoretical simulations. The remarkable sensitivity of SERS detection originates from the enhanced electromagnetic fields generated at both the nanogaps and branched ends of the Au@Ag nanostars, coupled with their optimized LSPR characteristics. The detection limit achieved an exceptionally low level of 10–15 M. Effective detection of pesticides such as thiram and carbaryl was also achieved. The structural configuration of the Au@Ag nanostars fully leverages the synergistic effects between Au and Ag, along with the nanogaps, to significantly enhance the sensitivity and stability of SERS detection. This study provides theoretical and experimental references for plasma metal nanostars with significantly enhanced electromagnetic fields and offers insights for future SERS studies.
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高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Lei Chen,Rui Xu,Zhi Yang,Fuyu Chang,Lu Yang,Yoonseop Byun,Eunsoo Song,Eungyeong Park,Lihui Liu,Young Mee Jung
The two-dimensional (2D) layered structure of MXene provides a large specific surface area, making it an ideal platform for optimizing geometric configurations in surface-enhanced Raman scattering (SERS) applications. In this study, we developed a novel ternary core-shell nanostructure, Ag@Cu2O-MXene, in which Ag@Cu2O core-shell nanoparticles (NPs) are uniformly anchored onto 2D Ti3C2Tx MXene nanosheets. The Ag NPs exhibit strong localized surface plasmon resonance, while the narrow bandgap and high electron mobility of Cu2O shell promote efficient charge transfer. Importantly, plasmonic coupling between the Ag core and the MXene substrate further enhances plasmon absorption, resulting in a substantial increase in SERS activity and enabling highly sensitive molecular detection. Using this composite, we achieved an ultra-low detection limit of 10–9 M for methylene blue. MXene substrate further facilitates rapid electron transfer from the Ag core to the the Cu2O shell, while its surface defects contribute additional charge carriers to Cu₂O, enhancing the utilization of photogenerated electron. Notably, the SERS enhancement was positively correlated with the thickness of Cu2O shell, highlighting the tunable nature of the Ag@Cu2O-MXene core-shell nanostructure.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Guangzhi Nie,Jing Xue,Yuyu Gao,Zhaoqing Wang,Hang Wang,Jiangbin Wu,Yunze Long,Wenpeng Han
The detection of gaseous molecules using surface-enhanced Raman spectroscopy (SERS) remains challenging due to the rapid diffusion and low intensity of gas molecules. In this study, we developed a flexible and breathable SERS substrate by in-situ growth of Ag@ZIF-8 nanoparticles on electrospun nylon 6/6 fibers. The microchannels in the fiber membrane, combined with the high porosity of ZIF-8, enable effective capture and enrichment of volatile organic compounds (VOCs) in SERS hot spots. The optimized substrate demonstrated a detection limit of 6.64 × 10 −8 M for dithiohydroquinone (DP) gas, along with excellent reproducibility, linear correlation (R 2 = 0.99), and stability over 30 days. Furthermore, using a residual neural network (RNN) model for deep learning analysis, the substrate achieved 100 % accuracy in detecting gaseous glutaraldehyde (GA), a typical VOC found in disinfectants. This study showcases the potential of nylon/Ag@ZIF-8 substrates, enhanced by artificial intelligence, for practical and precise detection of gaseous molecules in various environments.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Longwen Chen,Libing Guo,Yingxi Wei,Guijing Xiao,Feng Liu,Yanwu Chen,Xiaojing Jin,Yongyang Zhu,Haowei Huang,Yifan Lin
In this study, the dynamic behavior of oxygen species in Ag/CeMnO x composite oxides and their promotional effects on catalytic soot combustion were investigated. By combining in-situ XRD with multi-scale characterization techniques, the mechanism underlying the Ce-Mn synergistic effect is elucidated in the formed Ce-Mn solid solution. A series of Ag-loaded composite oxides with varying Ce:Mn molar ratios were prepared via a hydrothermal method, and it was found that the Ag/Ce8Mn2 catalyst achieved a soot half-conversion temperature (T 50 ) below 300 °C (T 50 = 295 °C), significantly outperforming Ag-loaded single-metal catalysts. Furthermore, the presence of NO and H₂O improved catalytic activity by generating oxidative intermediates and enhancing interfacial wettability. Notably, the Ag/Ce8Mn2 catalyst retained 95 % of its initial performance after five cycles, demonstrating excellent stability. XPS, H₂-TPR, O₂-TPD and Raman spectroscopy analyses revealed that an appropriate Mn doping induced abundant oxygen vacancies in the CeO₂ lattice, enhancing the active oxygen species generation and lattice oxygen activation. In-situ XRD directly observed the outward diffusion of oxygen ions from CeO₂ during the reaction, confirming the mobility of surface/bulk lattice oxygen and the oxygen replenishment mechanism facilitated by Mn-O-Ce bridge bonds, driving efficient soot oxidation. This study elucidates a synergistic regulation strategy for oxygen vacancy density and lattice oxygen mobility, providing theoretical support for the development of efficient and durable soot oxidation catalysts.
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FOOD CONTROL
·
2025
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IF 6.3
Shanshan Xue,Limei Yin,Lixin Ma,Heera Jayan,Usman Majeed,Hesham R. El-Seedi,Xiaobo Zou,Zhiming Guo
As a major contaminant in apples, patulin (PAT) poses a significant threat to human health and the economy. Establishing highly sensitive and accurate quantitative detection methods for PAT is crucial for ensuring food safety and protecting consumer health. Herein, a competitive ratiometric surface-enhanced Raman spectroscopy (SERS) aptasensor was fabricated. 4-Mercaptobenzoic acid (4-MBA) was embedded as an internal standard (IS) within a gold-silver core-shell structure, later assembled onto Fe 3 O 4 nanoparticles and coupled with complementary aptamer strands to form magnetic probes. Additionally, an aptamer targeting PAT and the Raman reporter molecule 5,5′-Dithiobis-(2-nitrobenzoic acid) (DTNB) were anchored onto gold bipyramids (AuBPs), creating reporter probes. The recognition and binding of the target PAT to the aptamer led to the detachment of the reporter probe after magnetic separation, reducing the DTNB signal. Thus, the ratio of SERS peak intensities (I DTNB /I 4-MBA ) quantified PAT demonstrated a linear range of 0.1–200 ng/mL and a limit of detection (LOD) of 0.070 ng/mL. The implementation of magnetic separation significantly streamlined the sensor fabrication process, whereas the ratiometric strategy substantially enhanced the reproducibility and stability of PAT detection. Furthermore, this method was successfully applied to the determination of PAT in apples and their products, showing potential for practical applications in food safety.
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TALANTA
·
2026
·
IF 6.7
Xue Cheng,Shuaishuai Wei,Yu Li,Gengli Huang,Yuxing Yan,Zhouping Wang
Nanozyme-based aptasensors still face challenges, including low catalytic activity and inverse signal correlation, which hinder their advancement in the field of food safety. To address these issues, this study developed a novel nanozyme-based colorimetric aptasensor for the high-performance detection of AFB1. Initially, a gold-silver alloy nanoframework (Au-Ag NFs) was synthesized using liposomes as a template, followed by the deposition of platinum nanoclusters on its surface, resulting in the successful preparation of the Au-Ag NFs@Pt NCs nanozyme. This nanozyme exhibited outstanding oxidase-like activity, efficiently catalyzing the oxidation of TMB, leading to a significant increase in absorbance at 652 nm and a visually observable blue color. The AFB1-specific aptamer was covalently immobilized onto the nanozyme surface through Au-S bonds, forming the Au-Ag NFs@Pt NCs@apt complex and enabling the construction of an integrated “recognition-catalysis” sensing system. Upon target recognition by the aptamer, conformational changes in the Au-Ag NFs@Pt NCs @apt-target complex reduced the masking effect of the aptamer on the surface of the nanoenzyme, thereby enhancing oxidase-like activity. Ultimately, this colorimetric aptasensor achieved an enzyme-like “turn-on” detection of AFB1. The aptasensor achieved a detection limit as low as 22.3 pg/mL, and demonstrated excellent selectivity, stability, and satisfactory recovery in spiked peanut samples. This work not only provides a promising new approach for on-site rapid screening of AFB1, but also offers novel composite material insights for designing high-performance nanozyme sensing platforms targeting other analytes.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Qiang Zhang,Peiyuan Liu,Zhiwei Yang,Yanjun Liang,Jian Zhang,Lin Wang,Xiao Huang
The coproduction of freshwater and electricity through solar-driven interfacial evaporation presents a promising strategy to address the current water and energy shortages. However, achieving high evaporation rate, efficient pollutant degradation, and high electrical power output in an integrated system remains challenging. Herein, we report a multifunctional membrane evaporator based on Sb 2 Se 3 /MoSe 2 /Ag heterostructures embedded in a polyacrylamide (PAM) hydrogel (Sb 2 Se 3 /MoSe 2 /Ag@PAM) for simultaneous wastewater evaporation, decontamination and thermoelectric power generation. The porous PAM matrix provided hydrophilicity and low evaporation enthalpy, while the heterostructures synergistically enhanced light absorption, photocatalytic activity, and thermal localization. As a result, under 1.0 sun illumination, the integrated membrane evaporator achieved a steady evaporation rate of 3.39 kg m −2 h −1 and a high degradation efficiency of 92% for tetracycline (TC) within 120 min, and when coupled with a thermoelectric module produced electricity with a maximum output power of 0.37 W·m −2 . Our work offers a new hybrid material platform comprising narrow bandgap semiconductor heterostructures, plasmonic noble metals and hydrogel membranes for high-performance multifunctional evaporators.
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高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 11
·877
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IF 3.504
Guangyu Lei,Jingwen Ma,Zhen Li,Xiaobin Fan,Wenchao Peng,Guoliang Zhang,Fengbao Zhang,Yang Li
In this paper, a facile route has been developed to prepare magnetic trimetallic Au-Ag-γ-Fe2O3/rGO nanocomposites. The impact of the preparation method (the intensity of reductant) on the catalytic performance was investigated. The nanocomposites were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The prepared nanocomposites show fine catalytic activity towards the reduction reaction of 4-nitrophenol (4-NP). The nanocomposites also have superparamagnetism at room temperature, which can be easily separated from the reaction systems by applying an external magnetic field.
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高影响因子
FOOD CHEMISTRY
·
2026
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IF 10.4
Qiulan Li,Jiahe Dai,Yaling Yang,Linqian Hou,Hong Li
In this study, an “off” signal chemiluminescence (CL) sensor was designed for the detection of glyphosate (Gly) based on Cu-CDs/ABEI@Ag as CL enhancers. Copper-doped carbon dots (Cu-CDs) was synthesized through a sample microwave digestion approach, and AgNO 3 was reduced to silver nanoparticles (AgNPs) utilizing N-(4-aminobutyl)-N-ethylisoluminol (ABEI) and prepared Cu-CDs as mild reducing agents. The Cu-CDs and AgNPs demonstrated peroxidase (POD)-like properties, facilitating the breakdown of H 2 O 2 into reactive oxygen species (ROS) such as ∙OH, ∙O 2 − , and 1 O 2 to generate CL signal. By integrating ABEI into the catalyst system, the CL reagent became concentrated within the catalyst structure, minimizing the spatial separation between the catalyst and ABEI, thus amplifying the CL response. Notably, Gly can inhibit POD-like activity by interaction between Cu-CDs/ABEI@Ag and Gly, thus decrease the CL intensities produced from oxidation of ABEI. Based on this highly sensitive “off” response in CL, a CL nano-sensor was developed for Gly detection, achieving a detection limit of 3.87 μg/L. Furthermore, satisfactory spiked recovery rates (95.86–111.13%) were obtained in coffee samples, highlighting the sensor's promising applicability for on-site Gly monitoring.
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PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Ying Xu,Yang Zhang,Zhiyu Li,Yuanrong Liao,Rongjian Sa,Hualiang Yu,Yizhi Wang,Jing Peng,Yan Lin,Jun Wang
Electrospinning is a prominent technique for fabricating polymer-stabilized composite nanofibers for surface-enhanced Raman scattering (SERS). However, further exploration of the surface chemistry of these electrospun composite substrates is crucial to manipulate the charge transfer (CT) effect and achieve synergistic effects between CT and localized surface plasmon resonance (LSPR) for enhanced bio-labeling and pesticide detection. Here, we present the development of a flexible and self-supporting SERS substrate using electrospinning, consisting of polymer-coated silver nanowires (AgNWs). By employing different polymer shells and probe molecules, we strategically adjusted the energy levels of the frontier orbitals , enabling effective control over the CT effect. The resulting nanofibers exhibited optimized selectivity and sensitivity through multiple CT routes, enabling the detection of thiram in apple skin using a convenient wiping sampling method with a low limit of detection (LOD) of 5 ng/cm². We also investigated other pesticides without viable CT routes to demonstrate the versatility of the composite substrates, although they exhibited relatively lower selectivity and sensitivity due to the absence of synergistic effects. This study highlights the potential of CT manipulation in harnessing synergistic effects in electrospun 2D composite nanofibers , thereby advancing the practical applications of SERS technology.
研究领域:
材料科学
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纳米技术
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分析化学
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环境监测
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生物传感
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高影响因子
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