Materials
·
2025
·Vol. 18
·期 17
·4130
·
IF 3.2
Chenyang Zhao,Xiaochen Ren
In this study, we successfully prepared silver electrodes through a silver mirror reaction. By carefully regulating the amount of ammonia complexing agent in the silver–ammonia solution, we effectively suppressed the decomposition of the plating solution while reducing the surface roughness of silver films from 9.22 nm to 4.42 nm. The electrical conductivity of our solution-processed silver layers was nearly one order of magnitude higher than that of conventional inkjet-printed silver electrodes. When applied as source-drain electrodes in organic field-effect transistors (OFETs), these electrodes enabled devices with an average mobility of 0.13 cm 2 /(V·s) and remarkably low mobility variation of only 8.7%. Furthermore, we modified the silver electrodes through chemical platinum plating, achieving a significant 0.74 eV alteration in work function, which demonstrates the great potential of chemical plating for surface functionalization in solution-processed organic electronic devices.
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DOI
PubMed
高影响因子
Nano Energy
·
2024
·
IF 16.8
Wenjie Deng,Long Yuan,Peng Wan,Junlu Sun,Caixia Kan,Daning Shi,Chunxiang Xu,Junfeng Lu
In the complex human body fluids, neurotransmitters such as dopamine (DA) play a significant role in regulating physiological functions, thereby impacting the normal functioning of biological activities. Hence, employing a rapid and non-destructive analytical technique for precise measurement of these molecules is crucial. Here, a novel piezoelectric-enhanced ZnO/Ag microcavity SERS substrate was designed, enabling ultra-sensitive and instantaneous detection of DA molecules. This substrate achieves exceptional trace detection performance, with a detection limit for Rhodamine 6 G (R6G) molecules as low as 5×10 −13 M and a EF of 1.05×10 11 , DA can be accurately identified even at exceedingly low concentrations, demonstrating outstanding capabilities in trace detection. This innovative structure not only represents a breakthrough in the rapid trace detection of neurotransmitters but also introduces new avenues for research and diagnostics in fields such as precision medicine, neuroscience , and pharmaceutical development.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Li Wang,Zhangmiao Ye,Caihong Lin,Yugao Wang,Jinping Li,Jiangfeng Yang
N2O/CO2 separation in the tail gas of adipic acid presents a significant challenge due to the closely resembling physical characteristics exhibited by CO2 and N2O. Herein, adsorption and separation performances of CO2 and N2O on FAU-type zeolite Y with different cations (Na+ and Ag+) were studied comprehensively. After Ag+ exchange, zeolite Y changes from a CO2-selective adsorbent to a N2O-selective adsorbent. AgY shows high N2O uptake (95.7 cm3/g) but relatively low adsorption heat (23.1 kJ/mol), making it suitable for N2O/CO2 separation. In situ Fourier transform infrared spectrometry indicates that N2O is successfully adsorbed on AgY. The breakthrough experiment reveals that AgY exhibits superior performance in the separation of N2O/CO2 at a flow rate of 20 mL/min while also exhibiting a favorable retention time and ratio of retention time with CO2 breakthrough time, which can reach up to 4.1 min and 0.24, respectively, which makes it an optimum N2O/CO2 separation material reported so far.
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Small
·
2015
·Vol. 11
·期 20
·2454-2462
·
IF 8.368
Peng Du,Pengtao Jing,Di Li,Yinghui Cao,Zhenyu Liu,Zaicheng Sun
Localized surface plasmon resonance (LSPR), light scattering, and lowering the series resistance of noble metal nanoparticles (NPs) provide positive effect on the performance of photovoltaic device. However, the exciton recombination on the noble metal NPs accompanying above influences will deteriorate the performance of device. In this report, surface-modified Ag@oxide (TiO 2 or SiO 2 ) nanoprisms with 1–2 nm shell thickness are developed. The thin film composed of P3HT/Ag@oxides and P3HT:PCBM/Ag@oxides is investigated by absorption, photoluminescence (PL), and transient absorption spectroscopy. The results show a significant absorption, PL enhancement, and long-lived photogenerated polaron in the P3HT/Ag@TiO 2 film, indicating the increase of photogenerated exciton population by LSPR of Ag nanoprisms. In the case of P3HT/Ag nanoprisms, partial PL quench and relatively short-lived photogenerated polaron are observed. That indicates that the oxides layer can effectively avoid the exciton recombination. When the Ag@oxide nanoprisms are introduced into the active layer of P3HT:PCBM photovoltaic devices, about 31% of power conversion efficiency enhancement is obtained relative to the reference cell. All these results indicate that Ag@oxides can enhance the performance of the cell, at the same time the ultrathin oxide shell prevents from the exciton recombination.
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DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Wen Liu,Jun Dong,Yuchong Ren,Wanting Zhou,Qingyan Han,Chengyun Zhang,Kaili Ren,Yongkai Wang,Wei Gao,Jianxia Qi
In this paper, Au-Ag alloy nanostar (Au-Ag NSt) substrates were prepared by liquid–liquid three-phase self-assembly method, and the influence of preparation conditions on their Raman activity of the substrate was explored. By adjusting the gold-silver ratios of alloy seeds and the concentration of AgNO 3 in the growth solution, it was found that the LSPR peak can be adjusted. Under the conditions of Au 1 -Ag 3 nanoparticles as seeds and 200 μL AgNO 3 solution (2 mM) as epitaxial growth solution, the prepared Au 1 -Ag 3 NSt substrate exhibits excellent SERS activity. The substrate can detect R6G and CV probe molecules with detection limits as low as 10 −11 M and 10 −10 M, respectively. Experiments have confirmed that the substrate has the characteristics of high sensitivity, good uniformity and strong stability. In addition, the substrate can detect APM molecules far below the safety standard, which further proves that the structure has excellent practical application potential as a SERS substrate.
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DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Xinbo Yu,Shuyuan Hu,Yonghui Zhou,Zhaocun Yu,Hanjiao He,Song Lin,Yi Long
Ag nanoparticles (AgNPs) are recognized for their excellent antibacterial properties and low toxicity, making them ideal for biomedical applications. Combining AgNPs with electrospun polyethersulfone (PES) has significant potential owing to the structural advantages of electrospun fibers and the antimicrobial efficiency of AgNPs. The biological activity of metal nanoparticles is often closely related to their size, with smaller particles generally exhibiting higher efficacy. However, existing synthesis methods tend to produce larger AgNPs, which limits their potential. In this study, electrospun PES was used as a support matrix to prepare an Ag nanoparticle (NP)-PES electrospun composite in which the majority of AgNPs measured under 60 mm in diameter. Bacteriostatic experiments revealed that this AgNP-PES electrospun composite possessed effective antibacterial activity against both Escherichia coli (gram-negative bacteria) and Staphylococcus aureus (gram-positive bacteria). The enhanced antibacterial activity was attributed to the small size of the AgNPs. Moreover, cytotoxicity tests confirmed that the electrospun composite was non-toxic to cells. Animal experiments showed that the AgNP-PES electrospun composite significantly promoted wound healing, particularly in burn wounds infected with S. aureus . More importantly, the preparation process was environmentally friendly, relying solely on sunlight as the energy source. Thus, the AgNP-PES electrospun composite shows significant potential for medical applications.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2014
·
IF 3.552
Zhihai Cao,Shudi Zhu,Hui Qu,Dongming Qi,Ulrich Ziener,Liu Yang,Yingjie Yan,Haitang Yang
Ag/TiO 2 nanocomposites were prepared through combination of a sol–gel process of a titanium precursor in inverse miniemulsions and in situ reduction of silver ions in the “nanoreactors”. The morphological investigation shows that Ag nanoparticles are mainly located on the surface of TiO 2 nano-supports because of the fast reduction rate of Ag ions by hydrazine. Ag/TiO 2 nanocomposites with amorphous or anatase TiO 2 phase displayed high visible-light catalytic activity for degradation of Rhodamine B. The photoactivity of Ag/anatase TiO 2 nanocomposites could be influenced by the Ag content that could be conveniently tuned by the loading of silver salts. The influence of the loading of silver salts on the particle properties of the Ag/TiO 2 nanocomposites was investigated systematically.
研究领域:
材料科学
·
环境科学
·
化学工程
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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
CATALYSIS TODAY
·
2018
·
IF 4.667
Houlin Wang,Shuting Luo,Xinghao Li,Wei Liu,Xiaodong Wu,Duan Weng,Shuang Liu
Developing catalysts with high cost-efficiency, good oxidation activities and strong thermal resistance is an ongoing task. Herein, we present the design and synthesis of confined catalysts with Ag protected by alumina. Thermal treatment at 800 °C for 10 h caused neither silver loss nor deactivation of this catalyst. Instead, nano-particles of Ag formed because of the heat/O 2 -derived ripening. These highly dispersed silver species and the catalyst’s mesoporous structure worked in tandem to achieve good catalytic performance for oxidation reactions, which made the aged sample a good candidate as CO elimination and gasoline particulate filter catalysts.
研究领域:
催化化学
·
材料科学
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DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2019
·
IF 4.384
Wenying Guo,Sihai Zhang,Nengwu Zhu,Deliang Luo,Pingxiao Wu
In this study, a strategy was developed to directly recover high-purity Ag and other metals (especially Cu) from WECs to reduce the leaching of precious metals and promote the leaching of Cu and other metals. The results of SEM, EDS, XRD and ICP-OES clearly suggested that Ag and Cu were effectively released from WECs below 0.15 mm size, which contributed to the regulation of metals crystal types. The zero-valent copper from WECs was changed by roasting to form CuO and Cu 2 O, and the suitable samples of roasting at 400 °C for 3 h were confirmed experimentally. After the leaching processing under H 2 SO 4 (1 M) and H 2 O 2 (30%), the roasted particles were directly obtained, including Ag with 99.53 wt.% purity and more than 99.99% recovered, and Cu, Sn, Ni and Zn extracted by 99.67%, 90.71%, 73.05% and 99.32%, respectively. However, the unroasted particles would generate lower grade of Ag because other metals (e.g. Cu, Sn, Ni and Zn) were difficult to be leached from WECs. The leaching solution primarily included Cu ions (98.3%) and a little of the nickel (0.83%) and tin (0.86%) ions, which could recover copper by evaporation crystallization to form CuSO 4 (99.48 wt. %). The reaction mechanism of the process could be concluded that the copper state was transformed by mechanical separation and roasting to promote the leaching of various metals from Ag.
研究领域:
材料科学
·
环境工程
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高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 19
·195601
·
IF 3.953
Zhongming Jiang,Jiamin Zhang,Kaizhao Wang,Tianyou Chen,Jiuwei Zhao,Kaijun Wang,Jin Hu
A mild strategy for fabricating nanoporous silver (np-Ag) pieces was reported via preparation of Ag–Ga alloys in relatively low temperature and subsequent electrochemical dealloying in nitric acid (HNO3) aqueous solution. After selectively etching Ga out of the Ag–Ga alloy, a typical three-dimensional (3D) bicontinuous nanoporous structure with a pore size of ∼67.21–159.33 nm was observed. A series of studies have shown that the addition of sodium dodecyl sulfate (SDS) results in minimum pore size. The coarsen exponent (n) is 1.61, and the activation energy was calculated to be 27.04 kJ mol−1. The ζ'-AgGa alloy prepared at low temperature can be used as the precursor for the preparation of fine np-Ags, and this method provides a new strategy for the industrial production of dealloyed np-Ag.
研究领域:
材料科学
·
化学工程
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高影响因子
ORGANIC ELECTRONICS
·
2019
·
IF 3.495
Jiahe Huang,Hongyan Zhang,Xiaofeng Zhao,Ju Bai,Yanjun Hou,Shuhong Wang,Cheng Wang,Dongge Ma
Organic electric memory devices have broad application prospects. In the present paper, a new kind of polyfluorene-based material containing methoxytriphenylamine groups was synthesized, which exhibited good Flash-type storage characteristics. The material was further doped with Ag NPs to improve storage performance. With appropriate amount of Ag NPs, the device presented an ON/OFF current ratio up to 1.1 × 10 4 with excellent stability. In addition, the switching characteristics of the device were discussed through data fitting and molecular orbital calculation.
研究领域:
材料科学
·
电子工程
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