CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Dan Zhao,Wenjie Jiang,Wang Zhang,Chenhao Zhang,Wenjun Zhao,Zhizhou Chen,Yanan Liu,Jiajie Xu
Antibiotic overuse has led to drug-resistant bacteria and superbugs, necessitating urgent strategies. MOFs, although they are potential antimicrobial carriers, have limitations at low doses and in single therapy. Here, by adding different amounts of CTAB in the precursor solution, two different morphologies of NH2-MIL-101(Fe)@Ag nanoagents were obtained, namely, NH2-MIL-101(Fe)@Ag-1 (Cube) and NH2-MIL-101(Fe)@Ag-2 (Octahedron). Antibacterial experiments showed that these two nano reagents with both photothermal and photodynamic effects exhibited nearly 100% bactericidal rate against high concentrations of Staphylococcus aureus and Escherichia coli (107 CFU/mL) within 15 min. The combination of inactivation of intracellular proteins and disruption of cell membranes induced by Ag ions and high temperature resulted in NH2-MIL-101(Fe)@Ag 100% in an octahedron showing durable and superior bactericidal performance at low doses (64 μg/mL), which is much better than other antibacterial reagents. Furthermore, the enhanced mechanism was discussed in detail by DFT calculations. A special electron transfer process occurred between Ag and NH2-MIL-101 (Fe) under 880 nm NIR irradiation, which promoted the generation of ROS and enhanced the antibacterial effect. In addition, these two nano reagents have good therapeutic effects on wound healing in vivo due to silver ions and photothermal effects.
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高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Fei Li,Junbiao Wu,Cong Luo,Shanhao Ze,Tongxiang Chen,Zhiguo Zhang,Fei Liu,Jing Li,Baodan Liu
In this study, we propose a liquid metal-assisted synthesis technique for high-quality two-dimensional gallium nitride (2D GaN) nanosheets and fabricate high-performance ultraviolet (UV) photodetectors based on this approach. Silver (Ag) nanoparticles (NPs) are deposited on the 2D GaN surface via magnetron sputtering to induce the localized surface plasmon resonance (LSPR), thereby enhancing the device’s optoelectronic performance. The results show that Ag NPs modification significantly improves the optical absorption of 2D GaN in the UV–visible range, enhances the collection efficiency of photogenerated carriers, and reduces surface defect states. The optimized photodetector, operating at a bias voltage of 10 V, achieves a higher photocurrent (7.32 × 10–5 A) and lower dark current (1.1 × 10–9 A), with the photocurrent-to-dark current ratio (Ilight/Idark) increasing from 102 to 104. The responsivity (Rλ) is improved from 0.749 A/W to 2.01 A/W, the external quantum efficiency (EQE) increases from 254 to 683%, and the specific detectivity (D*) enhances from 1.99 × 109 to 5.34 × 1010 Jones. Additionally, the device exhibits an ideal linear relationship between photocurrent and incident light intensity (θ ≈ 1.02), demonstrating improved stability and predictability in its photoresponse. This study highlights the critical role of nanoscale engineering in advancing UV optoelectronic device performance and provides an effective strategy for designing high-performance UV photodetectors.
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高影响因子
IONICS
·
2025
·
IF 2.6
Deping Chen,Hongying Lin,Binghua Jiang,Ying Chen,Minhong He,Yanhong Wei,Xun He,Wenjing Han,Wenjie Li
Tungsten trioxide (WO 3 ) is recognized as one of the promising materials for catalyst support. However, its practical application is still restricted by the low specific surface area and the relatively low conduction band level. An efficient hydrothermal and room temperature plasma technique was employed to synthesize WO 3 nanoparticles (designated as WO 3 -Ar), resulting in a higher surface area and the creation of substantial oxygen vacancies on the WO 3 surface. Subsequently, Pd and Ag nanoparticles were deposited onto the WO 3 nanoparticles, which are characterized by a high specific surface area and numerous oxygen vacancies, through hydrogen reduction (PdAg/WO 3 -Ar). Electrochemical tests indicate that the PdAg/WO 3 -Ar catalysts exhibit superior electrocatalytic efficiency compared to the PdAg/C catalyst. The significantly higher electrocatalytic activity is attributed to several factors: (1) The oxygen vacancy defects and the high unique specific surface area of WO 3 -Ar facilitate the anchoring of Pd–Ag nanoparticles and enhance the electrocatalytic performance of Pd–Ag nanoparticles in PdAg/WO 3 -Ar catalysts. (2) A catalyst-support interaction exists between Pd–Ag and WO 3 -Ar, which significantly boosts the catalytic performance of the PdAg/WO 3 -Ar catalyst.
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高影响因子
Materials
·
2025
·Vol. 18
·期 13
·3090
·
IF 3.2
Yuyang Zhou,Yun Li,Hao Liu,Chi Ma,Jing Sun,Xin Liu
Low-surface-energy and wettability-based antifouling coatings have garnered increasing attention in marine applications owing to their environmentally friendly characteristics. However, their limited functionality often results in suboptimal long-term antifouling performance, particularly under dynamic marine conditions. To address these limitations, a polydimethylsiloxane (PDMS)-based slippery (PSL) coating was fabricated on TC4 titanium alloy by integrating surface silanization via (3-Aminopropyl)triethoxysilane (APTES), antimicrobial Ag-TiO2nanoparticles, laser-induced hierarchical microtextures, and silicone oil infusion. The resulting PSL coating exhibited excellent oil retention and stable interfacial slipperiness even after thermal aging. Compared with bare TC4, low-surface-energy Ag-containing coatings, Ag-containing superhydrophobic coatings, and conventional slippery liquid-infused porous surfaces (SLIPS), the PSL coating demonstrated markedly superior resistance to protein adsorption, bacterial attachment, and diatom settlement, indicating an enhanced synergistic antifouling effect. Furthermore, it significantly reduced the diatom concentration in the surrounding medium without complete eradication, underscoring its eco-friendly and non-disruptive antifouling mechanism. This study offers a scalable, durable, and environmentally benign antifouling strategy for marine surface protection.
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PubMed
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2025
·
IF 5
Shi Wang,Yue Li,Yafang Pan,Xiaolong Song,Liu Wang,Mingli Wang
Modifying nanoparticle assembly can alter the electric field strength within “hot spots,” offering promise for enhancing surface-enhanced Raman scattering (SERS) performance. In this work, by modifying the surface of Ag nanoparticles (AgNPs) with glutathione (GSH), a pH-responsive substrate, Ag-GSH nanoparticles (AGGNPs), was prepared. Under acidic conditions, hydrogen bonds form between protonated GSH molecules, inducing aggregation of AGGNPs and causing a red shift in the absorption peak. The SERS enhancement factor (EF) increased from 5.6 × 10 5 to 1.36 × 10⁶ and exhibited a good linear relationship with pH. In practical apple sample detection, the natural acidic environment of the fruit pulp enabled SERS self-optimization. Without external acid addition, the signal for thiram at 1383 cm −1 was significantly enhanced, achieving a minimum detection concentration of 10 −11 M. This approach effectively provides a novel pathway for developing highly efficient SERS sensing strategies and offers fresh insights for expanding SERS applications in agricultural detection.
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高影响因子
ACS Agricultural Science & Technology
·
2025
·
IF 2.9
Liyan Wei,Wanmeng Wang,Tengda Ding
The toxicity of silver nanoparticles (AgNPs) on algae has been extensively studied, but the role of the cell wall in algal responses is still unclear. Therefore, two typical algae, Euglena sp. without a cell wall and Navicula sp. with a rigid cell wall, were selected to explore the role of the cell wall and different toxicity mechanisms of AgNPs using conventional toxicity endpoints and metabolomic analysis. Results showed that Navicula sp. was more sensitive to AgNPs than Euglena sp., with a 3 d EC50 of 36.36 μg L–1. Oxidative damage was not observed in the two algae when exposed to 50 μg L–1 AgNPs, but the activities of antioxidant enzymes in Euglena sp. were significantly increased, implying that the algal defense system was activated. Further analysis indicated that the toxicity of AgNPs on Navicula sp. was mainly mediated by released silver ions, which may be closely related to the presence of diatom frustules. Metabolomic analysis revealed that oxidative stress still existed in Navicula sp. exposed to 50 μg L–1 AgNPs, suggesting that some invisible changes were observed. Moreover, metabolites reflecting the level of hydrogen peroxide also decreased, indicating that oxidative stress was primarily caused by the superoxide anion. In addition, the increased metabolite indoleacetic acid may affect the algal shape, explaining why the diatom frustules played an important role in the toxicity of AgNPs. In contrast, the disruption of energy metabolism in Euglena sp. appeared to be the major cause of AgNP toxicity. Perturbations in algal metabolic pathways also suggested that AgNPs may affect RNA biosynthesis in algal cells. These findings provide insight into understanding the risk assessment of AgNPs in the aquatic environments.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Yikun He,Yongheng Fu,Danni Yan,Shuai Yang,Li Zhang,Jiajun Xu,Feifan Song,Xiaokun Zhang,Yuhui Dong,Yousheng Zou
In recent years, Ag-In-Ga-S (AIGS) quantum dots (QDs) have received widespread attention as non-toxic and environmentally friendly QDs. However, the low photoluminescence quantum yield (PLQY) restricts the further application of AIGS QDs in optoelectronic devices. Here, we constructed quinary Ag-In-Zn-Ga-S (AIZGS) QDs with outstandingly high PLQY of 92.1% by doping Zn into AIGS QDs via an economical and environment-friendly hydrothermal method. The synergistic action of the internal doped Zn providing radiative recombination channels and the surface doped Zn passivating the non-radiative recombination defects leads to enhanced PLQY of QDs. The corresponding QDs backlight films fabricated based on AIZGS QDs and polyvinyl alcohol (PVA) also show a high PLQY of 82.7%. The improved PLQY of AIZGS QDs is comparable to other toxic metal-containing QDs in the same spectrum. Furthermore, the PL peak wavelength of the QDs can be tuned from 545 nm to 616 nm by varying the Ag/In ratio. The realization of high PLQY in aqueous AIZGS QDs and its backlight films contributes to the application in the field of eco-friendly backlight display devices.
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高影响因子
Materials Futures
·
2025
·Vol. 4
·期 4
·045103
·
IF 10.8
Rui Zhang,Bobo Ma,Yuqi Cui,Chengyu Tan,Bingbing Chen,Yiming Li,Jiangjian Shi,Huijue Wu,Yanhong Luo,Dongmei Li,Jianhui Chen,Qingbo Meng
CsPbI3 perovskites with suitable bandgaps ∼1.70 eV present distinct advantages for top-cell photovoltaic materials in tandem solar cells, however, relevant work has been rarely reported. This work designed a sandwich-like MoOX/Ag/MoOX (MAM) buffer layer as the front cell window layer to maximize incident light utilization efficiency for semi-transparent CsPbI3 solar cells and four terminal (4-T) stacked cells. Further investigation revealed that the MAM has to experience in-situ reaction between Ag metal and fresh MoOX, which can simultaneously ensure the transparency of the buffer layer and improve the carrier transportation and collection, except for protecting the underlying spiro-OMeTAD layer from the bombardment of magnetron sputtering. Thanks to this MAM buffer layer and a tunnel oxide passivating contact (TOPCon) bottom cell with edge passivation, semi-transparent CsPbI3 devices (aperture area: 0.50 cm2) demonstrated a power conversion efficiency (PCE) of 18.86% while corresponding 4-T CsPbI3/TOPCon tandem solar cells (PSTSCs) presented the PCE of 26.55%. Besides, we also fabricated semi-transparent CsPbI3 minimodules with 16.67% PCE and 4-T PSTSCs with 26.41% PCE (aperture area: 6.62 cm2). This work provided a new scalable strategy for transparent buffer layers by constructing in-situ generated sandwich structured buffer layer, which is suitable for perovskite tandem solar cells.
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高影响因子
Analytical Methods
·
2026
·
IF 3
Xinyu Wen,Ruixue Sun,Hui Si,Junting Li,Chao Zhang,Hailing Zheng,Yang Zhou,Bing Wang
Silk fibroin (SF) is a key biomarker for ancient silk artifacts. The rapid and sensitive detection of SF is therefore essential for their compositional analysis and preservation. In this research, an anti-SF monoclonal antibody (anti-SF mAb) was conjugated with an AuDTNB@Ag nanocore–shell structure to form a highly effective SERS immunoassay probe, and a surface-enhanced Raman scattering (SERS) assisted immunochromatographic assay (ICA) was developed for the detection of silk residues in artifacts. The visual limit of detection (vLOD) is 40 ng mL−1 while the instrumental limit of detection (iLOD) is 3.96 ng/mL−1 with a wide linear detection range (5–100 ng mL−1) as determined through Raman spectroscopy. The assay exhibited high specificity against interfering proteins and demonstrated consistent inter-batch reproducibility. When detecting real cultural relic samples, the immunochromatographic strip assay showed high accuracy and reliability, which was validated by indirect enzyme-linked immunosorbent assay (ELISA). Considering its high sensitivity, rapid analysis, and portability, the SERS ICA may provide a technologically advanced strategy for the on-site screening of silk residues in archaeological and museological contexts.
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PubMed
高影响因子
TALANTA
·
2020
·
IF 5.339
Yueyue Tian,Yancao Chen,Mei Chen,Zhi-Ling Song,Bin Xiong,Xiao-Bing Zhang
Here we report the peroxidase-like [email protected] nanozyme as an integrated nanosensor for selective detection of silver ions (Ag + ), where the nanozyme plays the roles as both the signal trigger and reporter simultaneously. This method relies on two critical chemical reactions, including (1) the unique inhibitory effect of Ag + on the nanozyme triggered H 2 O 2 decomposition at weak acid environment and (2) H 2 O 2 induced Ag + reduction onto the nanozyme surface at basic environment, leading to a blueshift in the localized surface plasmonic resonance wavelength (LSPR λ max ) of the nanosensor. With this simple strategy, we demonstrated the sensitive and selective detection of Ag + over a dynamic range from 0.5 to 1000 μM with a limit of detection (LOD) of 500 nM by UV–visible spectroscopy, which is below the permitted level of Ag + in drinking water by U.S. Environmental Protection Agency (EPA). This method also exhibits satisfying recovery efficiency for Ag + detection both in tap water and spring water from the Yuelu Mountain. With this satisfying sensing performance and excellent stability of nanoprobes, this strategy is promising for the detection of Ag + in environment monitoring and food safety analysis.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zuo Guangling,Ye Hongyong,Du Jia,Ding Xin
A ternary Ag/Bi 2 O 3 /g-C 3 N 4 (Ag/BO/CN) photocatalyst was fabricated through a combined solvothermal and photochemical reduction approach for the degradation of ciprofloxacin hydrochloride (CIP). Upon illumination with simulated sunlight, the optimized Ag/BO/CN composite efficiently degraded CIP, resulting in near-complete (98.14%) removal within 100 min. This remarkable property is attributed to a synergetic interaction between the Ag surface plasmon resonance (SPR) effect and the S-scheme heterojunction (between BO and CN). In-situ XPS analysis and work function ( Φ ) calculations confirmed the S-scheme charge migration pathway. In this scheme, an internal electric field (IEF) prompts the reunification of less-reactive charge carriers, thereby selectively retaining the highly reductive electrons (e − ) in the conduction band (CB) of CN and the strongly oxidative holes (h + ) in the valence band (VB) of BO. Quenching experiments and electron spin resonance (ESR) spectroscopy identified superoxide radicals (·O 2 − ) and hydroxyl radicals (·OH) as the primary reactive intermediates. Moreover, the catalyst shows considerable promise for practical deployment, as evidenced by its excellent stability over four consecutive cycles and sustained degradation performance across various real water systems. Graphical abstract The alternative text for this image may have been generated using AI.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Bai Haoshen,Chen Liyan,Jiao Wenxin,Zhang Ganghua,Kong Demei,Li Dezeng
Silver nanowires (AgNWs) are regarded as a new generation of photoelectric material for transparent conductive films (TCFs) to replace indium tin oxide (ITO), on account of their superior conductivity, flexibility and stability. However, challenges still remain in the applications of AgNW-based TCFs to realize a combined enhancement of both transmission and conductivity. Herein, three types of AgNWs–ZnO composite TCFs were specifically designed to improve photoelectric properties. Through employing structurally controllable ZnO modifications on AgNWs, the contact architecture between AgNWs was optimized, enhancing optical performance and electron transport within the network. The results show that: (1) AgNWs/ZnO (Type-Ⅰ) with AgNWs deposited on a ZnO-nanoparticle (NP) film reaches a sheet resistance of 27.6 Ω·sq −1 at a transmittance of 90.68%; (2) AgNWs@ZnO (Type-Ⅱ) with AgNWs encapsulated by ZnO NPs reaches 20.6 Ω·sq −1 at 87.59%; (3) AgNWs⊥ZnO (Type-Ⅲ) with AgNWs integrated with ZnO nanotrees (NTs) achieves 44.0 Ω·sq −1 at 89.60%. Furthermore, Type-Ⅰ TCFs show excellent photocatalysis, interfacial hydrophilicity, and flexibility. The comprehensive multifunctionality of AgNWs–ZnO composite TCFs proves the great potential for their development. Graphical abstract The alternative text for this image may have been generated using AI.
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危险品化学品经营许可证（带存储）