Desalination and Water Treatment
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2014
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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
APPLIED CATALYSIS B-ENVIRONMENTAL
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2015
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IF 7.435
Xiaoxuan Li,Siman Fang,Lei Ge,Changcun Han,Ping Qiu,Weilong Liu
A novel plasmonic photocatalysts of Ag/AgCl-Bi 2 MoO 6 was successfully synthesized via a simple and mild wet-chemical process. The physical and photophysical properties of the as-prepared Ag/AgCl-Bi 2 MoO 6 samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), Ultraviolet–visible diffuse reflection spectroscopy (DRS), electron spin resonance (ESR), photoluminescence emission spectra (PL) and surface photovoltage spectroscopy (SPV). The interaction between Ag/AgCl and Bi 2 MoO 6 has been investigated by X-ray photoelectron spectroscopy (XPS) analysis, and which is facile to the electron transfer between Ag/AgCl and Bi 2 MoO 6 and result in the enhancing photocatalytic activity of Ag/AgCl-Bi 2 MoO 6 composite. The photocatalytic experiments indicate that the Ag/AgCl species can efficiently promote the separation efficiency of photo-generated charge carriers in Bi 2 MoO 6 , and consequently improve the RhB photodegradation activity. The 20 wt% Ag/AgCl-Bi 2 MoO 6 sample shows the highest photocatalytic activity, the degradation constant of 20 wt% Ag/AgCl-Bi 2 MoO 6 was as high as 4 times to that of pure Bi 2 MoO 6 . A possible catalytic mechanism for Ag/AgCl-Bi 2 MoO 6 is proposed, which can be attributed to the surface plasmon resonance (SPR) effect from Ag/AgCl species.
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高影响因子
TRIBOLOGY INTERNATIONAL
·
2017
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IF 2.903
Zhengfeng Jia,Zhengqi Wang,Chao Liu,Limin Zhao,Junjie Ni,Yuchao Li,Xin Shao,Chao Wang
Silver/polydopamine (Ag/PDA) nanocomposite powders were synthesized by dropping the AgNO 3 solution into aqueous solution containing dopamine (DA) molecules. The friction and wear properties of oil-acid (OA) modified Ag/PDA composites as additives in poly-alpha-olefin (PAO) base oil were measured using four-ball tribometer under different loads. The results show that the PAO containing OA modified Ag/PDA nanoparticles (OAMAgPDA) exhibit a better tribological property than pure PAO. The maximum decrease in wear scar diameter (WSD) and friction coefficient are amounted to 40% and 30%, respectively. The tribofilm containing C, O, N, Ag and Fe exists and plays an important role on reducing friction and increasing wear resistance.
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高影响因子
Journal of Energy Storage
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2022
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IF 8.907
Wenxing Luo,Xiaowu Hu,Yinhui Che,Shuai Zu,Qinglin Li,Xiongxin Jiang,Dingjun Liu
Phase change materials (PCMs), which exhibit significant capacity of latent heat absorption and release during the phase change process , have been promisingly used for solar energy conversion and storage. However, the application of organic PCMs for solar energy storage remains a great challenge owing to their low thermal conductivity and liquid leakage problem. In this work, a form-stable PCM with polyethylene glycol (PEG) and epoxy resin (EP) was prepared by melt blending (the mass ratio is 1:1). The experimental results indicated that the leakage problem of PEG was solved by the cross-linking of the molecular chains of PEG and EP. Meanwhile, in order to improve the solar energy conversion capability and thermal conductivity , an extremely low loading (4 wt%) of expanded graphite (EG) modified with Ag nanoparticle was added into the PEG/EP matrix. The results suggested that Ag nanoparticles were uniformly dispersed by electroless silver plating in the surface of EG, and the electroless modified EG was evenly distributed in the PEG/EP matrix. Moreover, the composite fillers exhibited prominent solar energy conversion capability (90.7 %) and higher thermal conductivity (121 %). Therefore, this novel composite has favorable potential in practical applications of solar energy storage.
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高影响因子
CHEMICAL PHYSICS LETTERS
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2013
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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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高影响因子
Nano Research
·
2016
·Vol. 9
·期 6
·1590-1599
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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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高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
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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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International Journal of Extreme Manufacturing
·
2025
·Vol. 7
·期 3
·035001
·
IF 21.3
Fan-Chun Bin,Xin-Yi Wu,Jie Liu,Xian-Zi Dong,Teng Li,Qi Duan,Jian-Miao Zhang,Katsumasa Fujita,Mei-Ling Zheng
Chitosan (CS)-based nanocomposites have been studied in various fields, requiring a more facile and efficient technique to fabricate nanoparticles with customized structures. In this study, Ag@methacrylamide CS/poly(ethylene glycol) diacrylate (Ag@MP) micropatterns are successfully fabricated by femtosecond laser maskless optical projection lithography (Fs-MOPL) for the first time. The formation mechanism of core-shell nanomaterial is demonstrated by the local surface plasmon resonances and the nucleation and growth theory. Amino and hydroxyl groups greatly affect the number of Ag@MP nanocomposites, which is further verified by replacing MCS with methacrylated bovine serum albumin and hyaluronic acid methacryloyl, respectively. Besides, the performance of the surface-enhanced Raman scattering, cytotoxicity, cell proliferation, and antibacterial was investigated on Ag@MP micropatterns. Therefore, the proposed protocol to prepare hydrogel core-shell micropattern by the home-built Fs-MOPL technique is prospective for potential applications in the biomedical and biotechnological fields, such as biosensors, cell imaging, and antimicrobial.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Min Gao,Xiao Yang,Weiya Jia,Linxin Liu,Guihua Lu,Lai Wei,Bei Zhang,Can Li,Feng Zhao
Surface-enhanced Raman spectroscopy (SERS) has attracted considerable attention owing to its high sensitivity, long-term stability, and non-destructive detection capabilities. However, achieving both high sensitivity and reproducible signal output within a single SERS substrate remains a significant challenge in recent years. In this study, a highly sensitive and reproducible SERS substrate was successfully designed and fabricated based on Ag/ZnO spherical shell ordered arrays, leveraging the synergistic effects of localized surface plasmon resonance and charge transfer mechanisms, both of which contribute effectively to Raman signal enhancement. The SERS performance of the substrate depended on the thickness of the ZnO layer, with a maximum enhancement factor of 2.68 × 10 8 achieved using a 30 nm ZnO layer and rhodamine 6 G as the probe molecule. A detection limit as low as 10 −9 M was attained while maintaining a relative standard deviation below 6%. This exceptional performance arises from the synergistic contribution of the intense localized electromagnetic field generated by the spherical-shell architecture and the efficient charge transfer pathways enabled by the multifunctional Ag/ZnO bilayer structure. This work presents a promising strategy for the development of recyclable and ultra-sensitive SERS sensors applicable to biomolecular detection and organic pollutant monitoring. Download: Download high-res image (158KB) Download: Download full-size image
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Runduo Teng,Changhao Feng,Yanting Wang,Wenjun Tu,Tianyu Lan,Qiyuan Fu,Jingyu Long
N-butanol is widely used in fields such as chemical engineering and pharmaceutical synthesis; therefore, trace-level, highly sensitive detection of n-butanol is of great significance. In this study, an n-butanol gas sensor based on silver (Ag)-decorated yttrium ferrite (YFeO 3 ) nanotubes was fabricated using the electrospinning followed by the impregnation method. Compared with the pure YFeO 3 , the Ag-decorated YFeO 3 nanotubes exhibited an enhanced response of 162.06 toward 10 ppm n-butanol. This remarkable gas-sensing performance is primarily attributed to the synergistic effects of the mixed-valence states of iron, abundant surface oxygen vacancies, and the Ag spillover effect. Moreover, it exhibits excellent long-term stability and a detection limit as low as 76.5 ppb. These results indicate that Ag-decorated YFeO 3 nanotubes hold significant potential for trace n-butanol detection.
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 8
·522
·
IF 5.4
Qiao Yuchun,Wu Yiying,He Jiahui,Chen Wen,Fan Jiaqi,Zhang Zhicong,Shen Jialu,Su Mengping,Wang Qidong,Li Shuai,Shen Yingjie,Shang Jizhen,Wang Hua
Glucose is a vital energy source, and its accurate monitoring is crucial for the diagnosis and management of metabolic diseases. Herein, we report a simple colorimetric sensing platform for glucose detection based on MnO 2 /Au-Ag nanozymes, glucose oxidase (GOx), and 3,3′,5,5′-tetramethylbenzidine (TMB). In this cascade system, GOx catalyzes the oxidation of glucose to generate H 2 O 2 , which is subsequently decomposed by MnO 2 /Au-Ag to produce reactive species that oxidize TMB, yielding a visible blue signal. The incorporation of Au-Ag nanoparticles provides additional catalytic sites and promotes interfacial electron transfer, thereby enhancing the catalytic performance of MnO 2 . The platform exhibits a linear response over 0.025-0.20 mM with a detection limit of 0.012 mM. It enables reliable glucose detection in artificial sweat and 80-fold diluted serum samples. In addition, portable nitrocellulose test strips were developed for visual and smartphone-assisted glucose detection. This strategy provides a simple and portable approach for low-concentration glucose analysis and offers potential for point-of-care applications after further validation. Graphical
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PubMed
高影响因子
Clinical Oral Investigations
·
2026
·Vol. 30
·期 9
·390
·
IF 3.6
Zhang Zhenzhen,Chen Yadong,Zhong Qi,Xu Jiajia,Cheng Yajie,Shu Chang,Luo Qiaojie
Objectives The hybrid layer formed during dentin bonding remains susceptible to degradation. This study aimed to develop a CaCl₂/AgF treatment strategy for in situ deposition of Ca–Ag hybrid nanoparticles within the demineralized dentin matrix (DDM) and to evaluate its effects on interface-confined water regulation, antibiofilm activity, mineral deposition, and ultimately bonding durability. Materials and methods DDM was sequentially treated with CaCl₂ and AgF solutions. Interface-confined water regulation was assessed by surface potential, water uptake, and thermogravimetric analysis (TGA). Antibiofilm activity against Streptococcus mutans ( S. mutans ) and saliva-derived microcosm biofilms was evaluated by confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM). Mineral deposition was examined by transmission electron microscopy (TEM) and selected area electron diffraction (SAED). Adhesive infiltration, nanoleakage, and microtensile bond strength (1 day and 12 months) were tested. Results Ca–Ag deposition was associated with reduced interfacial hydration, as indicated by reduced surface potential, decreased water uptake, and lower mass loss below 200 °C in TGA. It inhibited biofilm formation and disrupted established biofilms. Enhanced mineral deposition occurred within 1 h in the Ca–Ag group, with SAED patterns showing crystalline mineral phases, whereas controls remained unmineralized. Enhanced adhesive infiltration, reduced nanoleakage, and improved 12-month bond strength were observed. Conclusions Sequential CaCl₂/AgF treatment induced the in situ deposition of Ca–Ag hybrid nanoparticles within the DDM, which was associated with reduced interfacial hydration, antibiofilm activity, mineral deposition, and improved bonding performance in vitro. Clinical Significance This in vitro study suggests that CaCl₂/AgF treatment may represent a potential strategy for improving resin–dentin interface stability. Further investigations are required to evaluate its clinical applicability.
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