Desalination and Water Treatment
·
2014
·
IF 0.987
Mengying Gan,Yongqiang Huang,Yunlei Zhang,Jianming Pan,Weidong Shi,Yongsheng Yan
Ag/halloysite nanotubes/Fe3O4 (Ag/HNTs/Fe3O4) nanocatalyst was synthesized in our work. The structure of the as-prepared composite catalyst was that Fe3O4 nanoparticles with the size of 5.0–8.0 nm were loaded in the internal hollow lumen of HNTs and Ag nanoparticles with a mean diameter of 20 nm were randomly deposited on the external surface of HNTs/Fe3O4. The resultant Ag/HNTs/Fe3O4 exhibited satisfied catalytic activity (with conversion of 100% in 38 min) to the reduction of 4-nitrophenol (4-NP) with sodium borohydride. The catalytic activity was markedly enhanced when the catalysts concentration was increased (the rate constant was gradually increased from 0.40 to 20.18 × 10−3 s−1). Also, the advantage of the obtained magnetic composite catalyst in terms of their fast separation and simple reuse was identified through five successive catalytic and separation process cycles. It could be concluded that Ag/HNTs/Fe3O4 showed satisfied catalytic activity, recoverability, and reusability, which showed great potential for practical application for water treatment.
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高影响因子
CHEMICAL PHYSICS LETTERS
·
2013
·
IF 2.145
Yanling Liu,Feng Song,Jiadong Liu,Jun Zhang,Yin Yu,Hongyan Zhao
The enhanced luminescences of Er 3+ /Yb 3+ co-doped Y 2 Ti 2 O 7 films were demonstrated when silver/gold (Ag/Au) nanoparticles (NPs) were doped in the films. With the precipitation of the Ag nanoprisms, more intense green (525 nm, 546 nm), red (659 nm) upconversion (UC) emission bands and strong enhanced near infrared (NIR) emission were observed and the enhanced factors were up to 16.7, 15.6, 17.7 and 5.6 folds, respectively. The accordance between the local surface plasmon resonance of NPs and the UC emission band significantly increased the luminescence intensity. The efficiencies of the radiative emissions were enhanced also due to the hydroxyl groups primarily absorbed around the NPs.
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Advanced Materials Interfaces
·
2022
·Vol. 9
·期 26
·2200611
·
IF 6.389
Zeliang Guo,Jialiang Lang,Haitian Zhang,Cheng Yang,Sen Lin,Hui Wu
Silver particles are key materials for the production of conductive inks, which are typically thermally sintered to obtain high conductivity. However, it remains a big challenge to achieve high conductivity at temperatures lower than 150 °C, for the protection of heat-sensitive components in printed electronic devices. In this study, a novel frigid synthesis strategy at subzero temperature (Celsius) to produce Ag NPs with rich, rose-like nanostructures (Ag nano-flowers) is developed. The growth mechanism of Ag nano-flowers under frigid conditions is analyzed and discussed. Due to the fine nanoscale structure of Ag nano-flowers, they exhibit low sintering temperature below 120 °C. The electrical conductivity of printed Ag nano-flower foil reaches 8.64 × 10 4 S cm −1 at 120 °C, and 1.20 × 10 5 S cm −1 at 150 °C. This study provides an attractive approach to the facile fabrication of Ag nano-flowers with high electronic conductivity sintered at low temperatures and grants new insights into nanocrystallization under low-temperature conditions.
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高影响因子
APPLIED SURFACE SCIENCE
·
2013
·
IF 2.112
Weibing Li,Fangxia Hua,Jiguang Yue,Jiwei Li
Metal-semiconductor compounds, such as Ag@AgX (X = Cl, Br, I), enable visible light absorption and separation of photogenerated electron–hole through surface plasmon resonance (SPR) effect. However, the electron–hole generated and separated by light are vulnerable in Ag@AgX phase because of the occurrence of secondary recombined. In order to more effectively utilize the SPR photocatalytic effect, a heterojunction interface electric field was implemented effectively by introducing some cost-effective semiconductor materials with wide band gap to Ag@AgX compound, thereby preventing photogenerated electrons from secondarily compounding with the holes. In this article, by mixing 500 nm diameter ZnO and Ag@AgX compounds with mole ratio 1:1, studies show that 15 min illumination under visible light can complete degradation of rhodamine B (RhB), and indicate a high stability of photocatalytic degradation. Through Mott–Schottky plots and photoinduced I – t curve, the results show that through the ZnO/Ag@AgCl composition, heterojunction interface electric field can be formed effectively, thus increasing the separation efficiency and transfer speed of photogenerated electrons and holes, and improving the photocatalytic performance. Meanwhile, Ag@AgCl can implement the photosensitization of ZnO with high efficiency through SPR effect, which will enlarge the response range of photocatalyst to the visible area.
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Nano Research
·
2016
·Vol. 9
·期 6
·1590-1599
·
IF 8.893
Liu Dong,Xie Maolin,Wang Chengming,Liao Lingwen,Qiu Lu,Ma Jun,Huang Hao,Long Ran,Jiang Jun,Xiong Yujie
Formic acid oxidation is an important electrocatalytic reaction in protonexchange membrane (PEM) fuel cells, in which both active sites and species adsorption/activation play key roles. In this study, we have developed hollow Pd-Ag alloy nanostructures with high active surface areas for application to electrocatalytic formic acid oxidation. When a certain amount of Ag is incorporated into a Pd lattice, which is already a highly active material for formic acid oxidation, the electrocatalytic activity can be significantly boosted. As indicated by theoretical simulations, coupling between Pd and Ag induces polarization charges on Pd catalytic sites, which can enhance the adsorption of HCOO* species. As a result, the designed electrocatalysts can achieve reduced Pd usage and enhanced catalytic properties at the same time. This study represents an approach that simultaneously fabricates hollow structures to increase the number of active sites and utilizes interatomic interactions to tune species adsorption/activation towards improved electrocatalytic performance.
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ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Wei Lan,Youxin Chen,Zhiwei Yang,Weihua Han,Jinyuan Zhou,Yue Zhang,Junya Wang,Guomei Tang,Yupeng Wei,Wei Dou,Qing Su,Erqing Xie
Ultraflexible transparent film heaters have been fabricated by embedding conductive silver (Ag) nanowires into a thin poly(vinyl alcohol) film (AgNW/PVA). A cold-pressing method was used to rationally adjust the sheet resistance of the composite films and thus the heating powers of the AgNW/PVA film heaters at certain biases. The film heaters have a favorable optical transmittance (93.1% at 26 Ω/sq) and an outstanding mechanical flexibility (no visible change in sheet resistance after 10 000 bending cycles and at a radius of curvature ≤1 mm). The film heaters have an environmental endurance, and there is no significant performance degradation after being kept at high temperature (80 °C) and high humidity (45 °C, 80% humidity) for half a year. The efficient Joule heating can increase the temperature of the film heaters (20 Ω/sq) to 74 °C in ∼20 s at a bias of 5 V. The fast-heating characteristics at low voltages (a few volts) associated with its transparent and flexibility properties make the poly(dimethylsiloxane)/AgNW/PVA composite film a potential candidate in medical thermotherapy pads.
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MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Ningyuan Jiang,Yi Feng,Zhuhan Liu,Miao Yu,Gang Qian,Jingcheng Zhang,Zijue Zhou
La 2 Sn 2 O 7 has high melting point and excellent thermal stability, which improves the wettability between matrix and reinforcement. In this study, La 2 Sn 2 O 7 powder was synthesized by chemical coprecipitation method, and Ag-Ni-La 2 Sn 2 O 7 composites were prepared by vacuum hot-pressing sintering. The effect of La 2 Sn 2 O 7 content on the arc erosion behavior of Ag-Ni-La 2 Sn 2 O 7 composites was studied. The Ag-Ni-La 2 Sn 2 O 7 (85:12:3) composite has the lowest arc energy and the highest breakdown strength . With the increase of La 2 Sn 2 O 7 content, the defects on the cathode surface decrease and the erosion areas become flat. After arc erosion, the samples generate Ag 2 O, NiO, La 2 O 3 and SnO 2 . In this study, the mechanism of La 2 Sn 2 O 7 to improve the anti-arc erosion capability of composites is mainly enhancing the viscosity of the molten pool by the ``pinning'' action, consuming energy by the decomposition of La 2 Sn 2 O 7 , and the promotion of arc movement.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Guifang He,Xiang Liu,Junbao Yan,Mingwei Tian,Xiansheng Zhang,Lijun Qu,Fanggang Ning
To address the challenges of personal thermoregulation, this study proposes a multi-modal thermal management strategy based on a three-dimensional (3D) spacer Janus fabric (F-M/A-JF) asymmetrically decorated with MXene and silver. By leveraging the 3D structure's static air-trapping and MXene's low mid-infrared emissivity (0.419), the system achieves a 5.6 °C increase in simulated skin temperature indoors without energy consumption. Under simulated sunlight (100 mW cm −2 ), the Janus design exhibits a differential response—reaching 79.8 °C on the MXene side versus 62.9 °C on the Ag side—providing an “adaptive mode” to prevent outdoor overheating. Owing to the high electrical conductivity of MXene, the fabric achieves a surface temperature of 137.3 °C at a low voltage of only 5 V and demonstrates a high electromagnetic interference (EMI) shielding effectiveness of up to 57 dB. The “MXene Guardian” strategy ensures functional longevity over 20 washing cycles and 95.3% self-cleaning efficiency while preserving 93.8% of the original moisture permeability (5.14 mg cm −2 h −1 ). This robust system offers an energy-saving design paradigm for next-generation smart textiles in dynamic environments.
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Li Sun,Haoyue Zhao,Yuan Zhi,Hua Zhang,Binlin Dou,Yuejin Shan,Weijia Huang
The flexible substrates with high activity are limitedly utilized for the Surface Enhanced Raman Spectroscopy (SERS) detection of Aflatoxin B 1 (AFB 1 ) due to their complex and uncontrollable synthesis. Here, a multistep temperature synthetic strategy is innovatively proposed to facilely and controllably synthesize Ag nanowires loaded on the flexible polyethylene terephthalate nonwoven fabric surface (i.e., Ag NWs@PET). The above strategy can effectively promote the generation and the anisotropic growth of small-sized Ag seeds and thus ensure the uniformity of obtained Ag NWs, providing a valuable reference for the formation of other metal nanowires. Furthermore, Ag NWs@PET is employed as active substrates for the SERS detection of the AFB 1 in corns. Ag NWs@PET exhibits superior sensitivity, mechanical stability, reproducibility, and long-term stability. Noteworthy, by means of Ag NWs@PET, the quantitative detection of AFB 1 ranged from 10 -8 to 10 -13 M can be rapidly achieved. Clearly, as-obtained flexible Ag NWs@PET as a promising SERS substrate can pave the way for the expended implications of the SERS detection in food safety.
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DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Xinyang Lu,Hezhan Yu,Yu Yang,Qing Xu,Kai Zhao,Jun Li,Min Chen
Proton-conducting solid oxide fuel cells (H-SOFCs) demonstrate substantial potential for intermediate-to-low temperature operation due to the lower migration activation energy of protons (H + ) compared to oxygen ions (O 2− ). To address the critical role of cathode materials in determining cell performance, this study employs an A-site silver (Ag) doping strategy in perovskite oxide. BaCo 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3-δ (BCFZY), Ba 0.95 Ag 0.05 Co 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3-δ (BACFZY) and Ba 0.9 Ag 0.1 Co 0.4 Fe 0.4 Zr 0.1 Y 0.1 O 3-δ (BACFZY-1) materials are all prepared using the sol-gel synthesis method. The investigation into the structure and element distribution of the synthesized materials reveals that BACFZY remains in a pure perovskite phase, with all elements evenly dispersed throughout. Ag-doped BACFZY surpasses BCFZY with greater electrical conductivity and thermal expansion compatibility. Moreover, the incorporation of Ag in BACFZY cathode facilitate the oxygen adsorption, leading to lower impedance and superior output performance with maximum peak power density of 1160 mW cm −2 at 650 °C. Meanwhile, The BACFZY cell maintained stable operation for 100 h. The aforementioned experimental findings indicate that the BACFZY material is a promising cathode for H-SOFC.
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Jiansheng Chen,Jiaojiao Sun,Zhiqiang Zhang,Yubing Tian,Xianli Tian,Ce Wang,Xiaodong Wu,Peng Wang,Jing Gao
Blood species identification is crucial for forensic investigations. Surface-enhanced Raman scattering (SERS) offers promising advantages including rapid detection, non-destructive analysis, and high sensitivity, but faces challenges from direct metal-biomolecule interactions that can cause spectral interference and sample degradation. Here, we present a novel approach using graphene/Ag/Styrene Ethylene Butylene Styrene (SEBS) flexible SERS substrates for rapid and non-destructive blood species determination. The innovative “sandwich” structure features single-layer graphene (0.34 nm) positioned between silver nanoparticles and blood samples, effectively preventing direct metal-blood contact while maintaining the superior SERS enhancement. The flexible substrate demonstrates good performance including high detection sensitivity (the detection sensitivity of 4-Mercaptobenzoic Acid (4-MBA) is 10 −12 M), excellent storage stability (>30 days), and remarkable mechanical durability (>100 folding cycles). We collected 682 SERS spectra from five animal species and employed a convolutional neural network algorithm for classification, achieving the classification performance with 98.54% accuracy, 98.29% precision, and 98.38% recall. The flexible substrate enables rapid analysis and maintains the spectral integrity of archived samples for up to 31 days. This flexible graphene /Ag/SEBS platform has reliable capabilities and offers accurate new means for on-site forensic applications: non-destructive analysis, field portability, rapid results, and high accuracy.
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产品关联
DOI
PubMed
高影响因子
NANO
·
2024
·
IF 1
Jianchao Wang,Ziqi Wu,Huayong Peng
Ordered Ag@Au hybrid nanotube arrays were prepared by a galvanic replacement reaction and subsequently evaluated for their effectiveness as substrates for enhancing the fluorescence of poly(3-hexylthiophene) (P3HT). Ordered AgNWs arrays were assembled using a three-phase interface method, and ordered Ag@Au hybrid nanotube arrays were successfully prepared by a galvanic replacement reaction between a HAuCl 4 solution and ordered AgNWs arrays. The morphology of the ordered silver nanowires (AgNWs) arrays and Ag@Au nanotube arrays, as well as the influence of reaction time on the galvanic replacement reaction, were investigated. The fluorescence and laser-Raman properties of the conjugated polymer P3HT on various ordered Ag@Au nanotubes were analyzed. Gold (Au) particles grow on the surface of AgNWs, the diameter of the nanotubes gradually increases, and the ordered Ag@Au hybrid nanotubes form gradually. The surface plasmon resonance (SPR) peaks of Ag@Au hybrid nanotube arrays redshift and become wider as the reaction proceeds compared to AgNW arrays. The fluorescence properties of P3HT films on various ordered Ag@Au hybrid nanotubes were much higher than those on bare silicon substrates, but compared to the gold nanowire array, there is a decrease. As the galvanic displacement reaction progresses, the degree of reduction in fluorescence intensity increases. The unique aspect of this work was that the plasmon resonance wavelength of the ordered Ag@Au hybrid nanotube arrays showed a substantial redshift and broadening, which is much closer to biological samples. The ordered Ag@Au hybrid nanotube arrays can be used as ultra-sensitive fluorescence sensing platforms.
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