NANO
·
2026
·
IF 1.3
Zhida Yang,Wenkai Wang,Binbin Gao,Tianzi Xu,Dongxue Zhou,Rongjie Li,Wei Liu,Honglu Liang,Guangsheng Dong,Hongzhi Yuan,Wenjun Dong,Honglin Chen
The Cu@Ag core-shell particles can be employed as conductive phase in conductor paste. Ag shell is designed to protect Cu core from oxidation. To obtain thin, dense and uniform Ag shell on Cu core, a novel electroless Ag plating process for Ag coating is developed. In the process, acacia gum (AG) acts as surfactant and dispersant, manipulating Ag deposition on Cu slowly and accurately. Benefit from the reduction potential difference between Ag and Cu, a thin reduced Ag shell is plated on Cu core with layer growth mode firstly. Then, inhomogeneous surface energy of Ag shell commands its following growth with an island mode. Finally, these Ag islands grow to contact and bond together, resulting in an uniform and dense Ag shell for Cu@Ag. After optimization, the Cu@Ag particle shows excellent oxidation resistant. A mass increase of only 0.5% is observed in it at 300°C. Meanwhile, the Cu@Ag with regular structure also presents remarkable volume conductivity. Over all, the spectacular performance of prepared Cu@Ag powder indicates its promising application in conductive paste.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 42
·32985-32994
·
IF 4.4
Tian Haiyu,Zhang Yongjun,Wang Yaxin,Zhao Xiaoyu,Gao Renxian
We develop a suspended Ag-SiO 2 composite nanopore array by a self-assembly strategy, which exhibits significant SERS effects with plenty of 3D hot spots. The Ag-SiO 2 composite nanopore array is composed of Ag nanoparticles isolated by SiO 2 , which shows strong electromagnetic coupling between discrete silver nanoparticles and along each nanopore structure, as confirmed by COMSOL simulations. SERS observations for the prepared Ag-SiO 2 composite nanopore array show an ultra-low detection limit, excellent sensitivity, high uniformity, and stability, which is successfully applied for pyridaben detection of with the detection limit 1.19 × 10 –10 M.
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LANGMUIR
·
2025
·
IF 3.9
Xinwei Wang,Mingjun Zou,Yikun Ji,Le Ji,Wufang Yang,Shujuan Liu,Qian Ye,Feng Zhou
Marine biofouling is a common issue that concerns safety, cost, and ecosystem stability. Alginate, a commonly used filler in functional coatings and membranes, is also widely researched for biomedical applications. This study presents a novel approach for developing advanced self-polishing coatings by combining MXene nanosheets with sodium alginate (SA) and silver ions (Ag+). SA was uniformly deposited onto the MXene surface via oxidative copolymerization of dopamine and dopamine-sodium alginate (DA-SA), followed by the loading of Ag+ through ion exchange to obtain the MXene-SA-Ag composite. The resulting functionalized MXene nanosheets─MXene-SA and MXene-SA-Ag─showed enhanced antifouling performance due to the synergistic effect of the components. Specifically, the antibacterial efficiency of MXene-SA against the E. coli was 94.5%, while MXene-SA-Ag exhibited antibacterial rates exceeding 99% for both E. coli and S. aureus. The composite self-polishing coatings were then fabricated by incorporating functionalized MXene nanosheets with presynthesized self-polishing (SP) resin. The obtained nanocomposite coatings presented enhanced hydrophilicity, multifaceted antifouling mechanisms, and outstanding antifouling performances. The removal rates were above 90% against both bacteria and microalgae. Compared to conventional coatings, this novel design offers a copper-free alternative with remarkable antifouling performance.
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Kaixuan Cui,Jiaqi Shan,Yifan Xiao,Yunqi Liu,Huaxing Zhang,Xiaoyu Zhao,Jianbao Ding,Xingzhong Guo
Silver nanowires (AgNWs)-based transparent conductive films (TCFs) have emerged as highly promising alternatives to indium tin oxide (ITO) for flexible optoelectronic devices, but still face the challenge of electrical stability of AgNWs. Herein, highly electrically stable Ag-Au core-shell nanowires-based TCFs (Au@AgNWs TCFs) were fabricated by slot-die coating. Gold is uniformly grown on the surface of AgNWs by in situ reduction to construct Ag-Au core-shell structure with a gold shell thickness of 10 nm. The resultant Au@AgNWs TCF has superior optoelectronic properties with a transmittance of 92 % at 550 nm and a sheet resistance of 45 Ω/sq. Compared to the uncoated AgNWs TCF, the Au@AgNWs TCF shows slightly reduced optoelectronic performance, but exhibits significantly enhanced electrical stability. Under continuous operation at 12 V, the resistance of Au@AgNWs TCF only increases by 1.4 times after 18 h, whereas the uncoated AgNWs TCF fails after just 30 min. DFT calculations on the Ag (100)/Au (111) interface confirm the structural stability with a strong adhesion of 1.49 J m −2 and a low interfacial energy of 0.047 J m −2 . Differential charge density and DOS reveal significant charge transfer and the formation of an interfacial dipole field to strengthen interfacial bonding and suppress electromigration. CI-NEB calculations show that the Au layer significantly increases the migration barriers for Ag atoms, suppressing migration and enhancing the stability of the interface.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 18
·1-12
·
IF 2.8
Sun Xinjie,Zhan Shenzhi,Xing Juanjuan,Li Hongbo,Tong Hua
This article reports the important role of crystalline phases of tellurite glass in enhancing the performance of photovoltaic Ag pastes. It was found that Pb 2 Te 3 O 7 and PbTeO 3 crystals had been grown in tellurite glass after heat treatment. When the crystallized glass was used in photovoltaic Ag pastes, the energy conversion efficiency of crystalline Si solar cells had increased by 0.52 to 0.73 percentage points. This enhancement was attributed to the significant increase in open-circuit opening voltage and filling factor of the cells. Microscopic observation of the Ag–Si contact interface revealed that during the sintering of the Ag paste, the crystallization of the glass resulted in a delayed sintering and a shorter reaction time, which may protect the Si surface from excessive etching. By comparison between Pb 2 Te 3 O 7 and PbTeO 3 cases, it was inferred that the ratio of PbO and TeO 2 in the crystalline phase not only affected the sintering of the Ag paste on the Si surface, but also the size, number, and distribution of Ag crystallites at the Ag–Si interface. To further elucidate this issue, three binary glasses with PbO-TeO 2 ratios of 1:3, 1:1 and 2:1, respectively, were investigated. The results show that with the increase of PbO proportion, on the one hand, the softening temperature of the glass increased and the fluidity decreased, and on the other hand, the glass dissolved less Ag, precipitated more Ag, and enhanced the erosion of the Si surface. Current study shows that glass crystallization can be an optional means in addition to glass composition, which can be used to more finely control the sintering behavior of Ag paste on the Si surface.
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Journal of CO2 Utilization
·
2021
·
IF 7.132
Danqing Shu,Miao Wang,Fengyu Tian,Honglei Zhang,Chuang Peng
Electroreduction of CO 2 to high value-added products such as hydrocarbons provides a promising way to create a carbon neutral circular economy. Copper (Cu) is the most effective metal catalyst with selectivity towards hydrocarbons but Cu catalyst alone generally produces hydrocarbons at low selectivity and yield. Operando surface enhanced infrared absorption spectroscopic (SEIRAS) analysis reveals that the low hydrocarbon yield is attributed to the poor ability of Cu to produce carbon monoxide (CO), which is a crucial intermediate for hydrocarbon formation. In the current study, an Ag-Cu dual-cathode CO 2 RR device is developed, which allows separate control of electrode potential. This dual-cathode cell shows increased hydrocarbon yield (83 % for methane and 106 % for ethylene) and a 200 mV lower onset potential for C 2 H 4 , compared to electrolysis with a single Cu cathode. The CO produced by the Ag cathode transfers to Cu and increase its CO coverage, facilitating methane formation as well as promoting C C coupling to form ethylene. This study also reveals a mismatch of optimum electrode potential between Ag and Cu, which results in compromised performance of the two components in an Ag-Cu bimetallic electrocatalyst, but poses no challenge in the dual-cathode cell. To optimize the performance of the dual-cathode cell, we propose the use of a single-pass dual-gas-diffusion-cathode reactor with enhanced mass transfer for maximum hydrocarbon production. This work verifies that splitting the complex CO 2 RR process into two separate steps is a feasible method to improve the overall efficiency and rate of advanced products while reducing the energy input.
研究领域:
能源化学
·
电催化
·
材料科学
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xuejiao Wang,Jiayi Dai,Xueyan Liu,Yang Liu,Yufeng Tao,Erjin Zhang
Noble metal@functional material composites are a promising SERS platform that can overcome the limitations of traditional noble metal-only substrate, achieving the enhancement of SERS performance and the expansion of functionalities. Aiming to obtain high-performance composite SERS substrate, herein, the Ag nanoflowers (NFs)@g-C 3 N 4 hybrid was synthesized by a facile method. The prepared Ag NFs@g-C 3 N 4 substrate achieved highly sensitive SERS detection towards crystal violet with a detection limit down to 10 −11 M. At the same time, a relative standard deviation of less than 15 % for the SERS signal illustrates the satisfactory homogeneity of the obtained substrate. The remarkable SERS activity was attributed to the plasmonic enhancement from Ag NFs and the molecular adsorption capability from g-C 3 N 4 . When employing the Ag NFs@g-C 3 N 4 substrate to detect antibacterial residues in river water, the experimental results show that the detection limits for malachite green and methylene blue are 10 −6 M. This work develops a sensitive nanocomposite SERS substrate for trace molecules detection.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 30
·46200-46213
·
IF 5.19
Wang Yaqiao,Xia Xunfeng,Gao Shengwang,Zhao Xingpeng,Wang Guoying,Han Xue
A novel Ag/BiOBr/CeO 2 composite was successfully prepared for the first time, which had excellent performance in degrading sulfisoxazole (SSX) under visible light irradiation. The as-prepared samples were characterized by SEM, XRD, UV–vis DRS and BET et al. The composite of 10% Ag/BiOBr/CeO 2 showed the best photocatalytic activity and more than 99.5% SSX can be removed within 20 min. It exhibited the highest k value of 0.2428 min −1 , which was about 39.7 times higher than pure BiOBr (6.11 × 10 −3 min −1 ) and 22.1 times higher than BiOBr/CeO 2 (1.09 × 10 −2 min −1 ), respectively. The addition of Ag significantly improved the absorption rate of visible light and the separation rate of photogenerated electron–hole pairs. The initial pH and dosage of samples could have an influence on the photocatalytic activity. The radical trapping experiments proved that · O 2 − and h + were the main active species involved in photocatalytic degradation. Finally, the synthesized catalyst maintained excellent photocatalytic activity after 5 repeated cycles, which indicated the extraordinary stability and recyclability of Ag/BiOBr/CeO 2 . Graphical abstract
研究领域:
环境科学
·
材料科学
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2022
·Vol. 169
·期 11
·117502
·
IF 4.386
Rong Yu,Fuxin Liu,Nan He,Lingling Han,Xiuhui Liu
Hydrogen peroxide (H2O2) is closely related to our daily life and health, so it is urgent to accurately detect and analyze its content. Herein, a non-enzymatic H2O2 electrochemical sensor was successfully constructed based on electrodeposited silver nanoparticles (Ag NPs) on carbon nanospheres (CNs). Electrochemical characterization results showed that Ag NPs/CNs/GCE displayed good electrocatalytic performance for H2O2. The diffusion coefficient (D) and heterogeneous rate constant (k0) of hydrogen peroxide were calculated separately. In addition, the sensor had a wide linear range of 4.98 × 10−9 ∼ 7.29 × 10−3 M and a low detection limit of 1.66 × 10−9 M. It also presented excellent anti-interference properties in the presence of various substances. The content of hydrogen peroxide was further detected in real samples of makeup remover, milk and disinfectant with satisfactory recovery rates, confirming its application potential in routine detection.
研究领域:
分析化学
·
生物医学工程
·
材料科学
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高影响因子
Heliyon
·
2023
·
IF 4
Xin Jiang,Weilong Zhou,Wei Wang,Zichun Le,Wen Dong
Miniaturized and pure static devices are expected to be used in laser-imaging systems for speckle reduction. In this study, a pure static device based on polymer-stabilized liquid crystal (PSLC) doped with Ag nanowires was developed to effectively suppress laser speckles. The concentrations of the polymer and Ag nanowires in the PSLC were optimized, and then the PSLC devices were fabricated. A measurement system was set up to characterize the electro-optical properties of the fabricated PSLC devices. Subsequently, a laser projection system was built to demonstrate the speckle-reduction performance. Moreover, the degree of scattering and response time of the developed PSLC devices were investigated and discussed. A PSLC doped with 0.02 wt% Ag nanowires and 3 wt% polymer having a device size of 2 × 2 × 0.1 cm 3 was demonstrated to produce a speckle-reduction efficiency of 51.4 % under very low driving voltages. The experimental results verified effectiveness and superiority of the developed speckle reduction method based on PSLC doped with Ag nanowires.
研究领域:
光学材料
·
显示技术
·
纳米科技
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 24
·11013-11025
·
IF 4.682
Luo Guoqiang,Li Peibo,Hu Jianian,Guo Jingwei,Sun Yi,Shen Qiang
The purpose of this paper was to design an Al–Cu–Ag–C material system to address the deterioration of mechanical properties caused by intermetallic compounds generated during Al–Cu sintering. The in situ pyrolytic C layer was encapsulated on the surface of the raw material particles, which prevented Al–Cu diffusion and reduced the generation of intermetallic compounds. The microstructure of the Al–Cu–Ag–C composites illustrates that several alloy phases of Al 2 Cu, Al 4 Cu 9 , and Ag 2 Al are formed. The addition of Ag significantly improved the mechanical properties of the composite due to the formation of the Ag 2 Al phase and Cu–Ag solution. The tensile strength and compressive strength of Al–52Cu–3Ag–C are increased by 123.9% and 64.9% over Al–52Cu–C, and the strain is also considerably improved. The strength enhancement derived from the Orowan strengthening contributed by Ag 2 Al, and the solid solution strengthening contributed by Ag–Cu solid solution, respectively. The presence of Ag 2 Al also enhances the hardness of the composite.
研究领域:
材料科学
·
力学
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Kai Chen,Shengrong Yuan,Jinze Li,Yan Zhang,Fengfeng Chen,Dongming Qi
The bacterial infection and its transmission pose a great threat to life and health, which leads to the urgent development of efficient and broad-spectrum antibacterial agents. Herein, Ag/lignin layered nanoflower (Ag/EHL-CM-0.05) was synthesized by using biomass lignin as reducing and capping agents and silver nitrate as precursor. The study showed that the size distribution of Ag NPs was uniform distribution and about 20–40 nm. The crystal surface of Ag NPs was Ag (111) surface. The minimum inhibitory concentration of Ag/EHL-CM-0.05 against E. coli and S. aureus was all 7.8 μg/mL, which was the lowest of other Ag/lignin antibacterial materials and reached a level nearly as polycationic antibacterial agents. The antibacterial mechanism suggested that Ag/EHL-CM-0.05 could release OH and Ag + , which could cause bacterial death. Finally, Ag/EHL-CM-0.05 was sprayed onto the viscose fabrics by liquid-phase spray deposition method. It was found that the inhibition zone diameter of modified viscose fabrics against E. coli and S. aureus only dropped about 0.16 cm on average after friction treatment and 0.32 cm on average after washing treatment. This work provides a new idea for the design and synthesize of efficient, broad-spectrum, and bio-compatible antibacterial agents, which has important social, economic, and environmental significance.
研究领域:
材料科学
·
生物学
·
医学
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