LANGMUIR
·
2018
·
IF 3.789
Rongkai Ye,Yanping Zhang,Yuyu Chen,Liangfeng Tang,Qiong Wang,Qianyu Wang,Bishan Li,Xuan Zhou,Jianyu Liu,Jianqiang Hu
Pt-based catalysts with novel structure have attracted great attention due to their outstanding performance. In this work, H2PtCl6 was used as both precursor and etching agent to realize the shape-controlled synthesis of Pt-modified Au@Ag nanorods (NRs). During the synthesis, the as-prepared Ag shell played a crucial role in both protecting the Au NRs from being etched away by PtCl62– and leading to an unusual growth mode of Pt component. The site-specified etching and/or growth depended on the concentration of H2PtCl6, where high-yield core–shell structure or dumbbell-like structure could be obtained. The shape-controlled synthesis also led to a tunable longitudinal surface plasmon resonance from ca. 649 to 900 nm. Meanwhile, the core–shell Pt-modified Au@Ag NRs showed approximately 4-fold enhancement in catalytic reduction reaction of p-nitrophenol than that of the Au NRs, suggesting the great potential for photocatalytic reaction.
研究领域:
纳米材料
·
等离激元学
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催化化学
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材料化学
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纳米技术
✓ 已验证
DOI
高影响因子
Plasmonics
·
2020
·Vol. 15
·期 6
·1855-1861
·
IF 2.335
Chen Meijie,Yan Hongjie,Zhou Ping,Chen Xingyu
A transparent display allows us to see both the projection image displayed on it and the view behind it at the same time, which can be widely used in the car windshield, shop windows, and so on. To achieve the transparent display with the simple and easily available plasmonic nanoparticles, plasmonic Au-Ag nanoparticles with the strong scattering ability were used to achieve the objective of selectively scattering red, blue, and green light for the transparent screen in this work. Firstly, the optimized size parameters for these three color transparent displays were obtained theoretically. On the other hand, plasmonic nanoparticles used for the blue and green color transparence screen were reported in the previous experiments. Finally, a red color transparent display with the wide viewing angle was made based on the optimized Au nanoparticles experimentally.
研究领域:
纳米光子学
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材料科学
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显示技术
·
等离激元学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Guijing Li,Xueqian Fang,Wenjie Feng,Jinxi Liu
The Ag/SnO 2 electrical contact materials with different doping concentration of Zr and Fe were successfully fabricated through self-assembly precipitation and powder metallurgy method. The microstructures of Ag-SnO 2 composite powders and the prepared Ag/SnO 2 contact materials were investigated by a Scanning Electron Microscopy (SEM) coupled with EDS and EBSD systems. The results showed that the SnO 2 nanoparticles with typical geometric shapes were formed and distributed in Ag matrix. The electrical conductivity of the Ag/SnO 2 materials was significantly increased by 16 percent with the doping of 3 wt% ZrO 2 in SnO 2 . The surface morphology of the Ag/SnO 2 materials after arc erosion was further characterized. The formation of the Sn(Zr)O 2 and Sn(Fe)O 2 solid solution in Ag/SnO 2 significantly improved the arc dispersion and arc erosion resistance. This work can offer a novel approach to design Ag/SnO 2 contact materials for good electrical performances.
研究领域:
材料科学
·
电气工程
·
复合材料
·
纳米材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·Vol. 47
·期 12
·16870-16875
·
IF 4.527
Yanlin Li,Wenyuan Duan,Jian Wei
Among various carbon materials, diamond stands out due to excellent physical and chemical properties. In this work, we designed Dia@SiO 2 @Ag composites combining diamond micropowder and Ag nanoparticles by a simple chemical method and obtained stable substrate for surface enhanced Raman scattering (SERS) owing to its high surface-to-volume ratio, low density, as well as close bond between diamond and Ag. As-prepared Dia@SiO 2 @Ag presented high activity to detect crystal violet and rhodamine 6G molecules, which was demonstrated by significantly enhanced SERS spectra and high enhancement factor values (10 8 -10 9 ). Moreover, Dia@SiO 2 @Ag also showed desired sensitivity, which was investigated by detection limit. Therefore, our study provided more theoretical support and broadened the functional applications of diamond, particularly in Raman detection.
研究领域:
材料科学
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纳米技术
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分析化学
·
拉曼光谱
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
·
2017
·
IF 3.458
Meijie Chen,Yurong He,Jiaqi Zhu
In this study, the solar photothermal conversion performance of bimetallic Au–Ag nanoparticles (NPs) was investigated experimentally. NPs were prepared using a sodium citrate thermal reduction method, using the same procedure and materials to maintain the same particle surface properties. NPs with a tunable plasmon resonance wavelength and demonstrating a high intensity in the visible region were obtained by adjusting the molar ratio of Ag to Au precursors. Experimental results show that blended Au–Ag NPs exhibit a solar photothermal conversion efficiency of 31.41%, which lies between the values of pure Au and Ag NPs under the same NP volume fraction due to the independently scatter light of the Au and Ag NPs in this composite system. Bimetallic Au–Ag NPs demonstrated the highest solar photothermal conversion efficiency of 41.37%, a 31.7% increase over that of blended Au–Ag NPs. The efficiency of the bimetallic Au–Ag NP system was also higher than that of the pure Au NPs (37.81%) with a 40% decrease in Au consumption.
研究领域:
纳米材料
·
太阳能转换
·
等离激元学
·
光热材料
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2017
·
IF 2.843
Xinxin Zhang,Shiyang Cheng,Wei Zhang,Cai Zhang,Nicholas E. Drewett,Xiyang Wang,Dong Wang,Seung Jo Yoo,Jin-Gyu Kim,Weitao Zheng
Ag/Pr6O11 catalysts supported by either Pr6O11 nanorods (Pr6O11-NRs) or nanoparticles (Pr6O11-NPs) were prepared by conventional incipient wetness impregnation. The nanocomposite of Ag/Pr6O11-NRs demonstrated a higher catalytic activity for CO oxidation than Ag/Pr6O11-NPs at lower temperatures. This improved performance may be ascribed to the mesoporous features and resultant oxygen vacancies of the Pr6O11 nanorods support, as well as the large surface area and homogeneous loading of Ag species. As a result, 98.7 and 100% CO conversions were achieved at 210 and 240 °C for Ag/Pr6O11-NRs, while Ag/Pr6O11-NPs require a temperature of 320 °C to obtain the 100% CO conversion rate. These findings reveal that Pr6O11-NRs is the preferable support, comparative to Pr6O11-NPs, for Ag/Pr6O11 catalysts, for CO oxidation.
研究领域:
催化化学
·
纳米材料科学
·
环境化学
·
表面科学
·
能源化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Peibo Li,Guoqiang Luo,Xiaoshan Zhang,Xiao Wang,Zhihao Wu,Yi Sun,Qiang Shen
As one of the most commonly used binary alloys , the effect of intermetallic compounds (IMCs) of Al-Cu alloys in powder metallurgy on their structure and properties is instructive for tailoring Al-Cu alloys for different applications. In this investigation, a series of Al-Cu-Ag alloys with varying Cu compositions were fabricated via hot pressing. TEM analysis identified CuAl 2 as the primary intermetallic compounds , with Ag existing in forms including Ag 2 Al, elemental Ag, and an Ag-(Cu) solid solution . The modulation of Cu content influenced the state of Ag and the mechanical behaviors of the Al-Cu-Ag alloy. Particularly, the high Al/Cu alloy, benefiting from a synergistic effect comprising stacking faults, nanoscale precipitates, and solid solutions, exhibited outstanding mechanical properties. Conversely, the Al-50Cu-3Ag alloys displayed significant brittleness , attributed to the adverse impact of large-scale intermetallic compounds and increased grain size due to the formation of CuAl 2 . The incorporation of nanoparticles effectively mitigated the grain size in high Al/Cu alloys. This study elucidates the correlation between the evolution of intermetallic compounds and composition in Al-Cu alloys, offering novel insights into the reinforcement of both Al-based and Cu-based alloys.
研究领域:
材料科学
·
金属学与热处理
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粉末冶金
·
结构材料
·
合金设计
✓ 已验证
DOI
高影响因子
Small
·
2026
·
IF 11.8
Kainan Hong,Yutao Lu,Fuyao Huang,Yichi Zhang,Zihao Zhou,Yuanyuan Zheng,Ya Huang,Huisheng Peng,Peining Chen
Electronic textile is a promising platform for next-generation wearable systems, where transparent conductive fibers are essential building blocks for optoelectronic functions. Current transparent conductive fibers are typically realized by coating conductive nanomaterials onto a polymer fiber substrate. However, this strategy generally suffers from weak interfacial adhesion and thus causes conductivity degradation under mechanical deformations or environmental exposure. In this work, we report a high-performance transparent conductive fiber based on disulfide-functionalized thermoplastic polyurethane. Silver nanowires (AgNWs) react with sulfur atoms in the disulfide groups to form robust Ag-S covalent linkages, thereby stabilizing the AgNWs network. The resulting fibers exhibit a balanced combination of high conductivity (2.7 × 10 3 S/m) and optical transmittance (81%). Their conductivity and optical transmittance can be tuned by adjusting the AgNWs loading, while maintaining high transparency and superior mechanical durability under harsh conditions, including 1000 cycles of bending, twisting, and abrasion. We further integrate these fibers into electroluminescent fibers and display textiles through wrapping or weaving. These devices exhibit high brightness, uniform emission, and long-term operational stability. This interfacial engineering strategy improves compatibility between conductive networks and flexible polymers, enabling high-performance electronic fibers and textiles.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SYNTHETIC METALS
·
2025
·
IF 4.6
Yulu Chen,Huawei Rong,Rongzhi Zhao,Zhen Shi,Lingfeng Li,Hang Shentu,Xuefeng Zhang
With the rapid development of next-generation wireless communication technologies, electromagnetic pollution has become an issue that cannot be overlooked. Designing lightweight, flexible composite materials with excellent electromagnetic shielding properties has become a significant challenge. This study designed a double-layer core-shell structure to fabricate polymer-based PAN@PDA@Ag nanofiber membranes. Scanning electron microscopy (SEM) studies revealed that the nanofiber exhibits a distinct core-shell structure. PAN@PDA nanofiber adsorbs silver nanoparticles (AgNPs) via chemical reduction, forming a dense conductive network layer. The morphology of fibers is achieved by regulating the contents of PDA. The [email protected] @Ag-90 fiber membranes, with a thickness of 0.06 mm, show an impressive conductivity of 3601.76 S/m and a shielding effectiveness of 85.6 dB. This work demonstrates that the synergistic effect among the components endows the composite with outstanding electromagnetic shielding performance, offering promising prospects for applications in next-generation wireless technologies.
研究领域:
材料科学
·
电磁屏蔽
·
纳米技术
·
聚合物复合材料
·
无线通信
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Jing Zhang,Beini Zeng,Daiqi Li,Yongming Cui,Jinfeng Wang,Xia Duan,Wu Chen,Qingtao Liu,Bin Tang
Eggshell membrane (ESM) has a unique three-dimensional (3D) interwoven fibrous structure and can provide a unique supporting platform for functional nanoparticles . This work reports a novel strategy for fabricating photothermal conversion hybrid membranes by loading boron nitride (BN) and noble metal nanoparticles (Au or Ag) on the 3D network structured eggshell membrane. This hybrid bio-membrane combines the localized surface plasmonization resonance (LSPR) effects of Au (Ag) and the high thermal conductivity of BN, which led to the hybrid bio-membrane responsive to simulated sunlight irradiation and substantially enhanced photothermal conversion effect. The optimal hybrid bio-membrane achieved a high temperature of 88.3 ℃ after irradiation for 100 s under simulated sunlight. This work provides a strategy for designing advanced photothermal conversion materials for drug release and photothermal therapy applications.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2020
·Vol. 97
·期 1
·138-145
·
IF 2.008
Ge Zhenying,Li Ping,Li Binjie,Zhao Yanbao
Hydroxyapatite/silver/silver sulfadiazine ternary nanocomposite (HAP/Ag/SSD TNC) with a novel hierarchical structure was successfully fabricated as following steps. First, mesoporous hydroxyapatite (HAP) nanorods as carrier were synthesized by a facile hydrothermal method. Second, as one antibacterial agent, silver nanoparticles were designed to be loaded on the mesoporous HAP nanorods to produce HAP/silver nanorods. Third, silver sulfadiazine as the other antibacterial agent was in situ produced on the surface of HAP/silver nanorods to form HAP/Ag/SSD TNC. To estimate its antibacterial properties, minimum inhibitory concentration, minimal bactericidal concentration, and a filter paper inhibition zone experiments were conducted with three bacteria strains of gram-negative Escherichia coli ( E. coli ), Pseudomonas aeruginosa ( P. aeruginosa ), and gram-positive Staphylococcus aureus ( S. aureus ). The results demonstrated that HAP/Ag/SSD TNC exhibited outstanding and sustained antibacterial activities against P. aeruginosa in 48 h. Toward E. coli and S. aureus , HAP/Ag/SSD TNC displayed similar antibacterial abilities with that of HAP/silver nanorods. Therefore, HAP/Ag/SSD TNC has the potential to be a new excellent antibacterial agent and extensively applied in the antibacterial field.
Illustration of the general formation procedure of HAP/Ag/SSD TNC.
研究领域:
材料科学
·
生物学
·
医学
✓ 已验证
DOI
高影响因子
Journal of Bionic Engineering
·
2022
·Vol. 19
·期 2
·507-515
·
IF 2.995
Li Mingrui,Wei Yongjie,Ma Bowen,Hu Yang,Li Dongdong,Cui Xiaoqiang
The loosening of implant due to bacterial infection brings great difficulties to the implantation of bionic titanium devices. In this study, the Zeolitic Imidazolate Framework 8 (ZIF-8) and silver ions were added to the surface of titanium alloy to obtain a uniform coating, which has nice biological activity and antibacterial property. The material structure characterizations, such as X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), proved that titanium is successfully modified with ZIF-8 and silver ions. It has micro- and nano-level characteristics, rough porous morphology, and excellent apatite inducing ability. The water contact angle experiment shows that the addition of ZIF-8 greatly increases the hydrophilicity of material, which provides conditions for the attachment of osteoblasts. The polarization curve obtained from the electrochemical test proves that the addition of ZIF-8 coating improves the corrosion resistance of titanium. The release of silver ion has a strong growth inhibitory effect on E. coli , and exhibits excellent antibacterial properties. Therefore, the preparation of ZIF-8/Ag coatings on 3D printed titanium provides a new option for the development of orthopedic implants.
研究领域:
生物材料学
·
表面工程
·
纳米医学
·
骨科植入物
·
抗菌治疗
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）