Scientific Reports
·
2026
·
IF 3.9
Wang Qiuyue,He Qiuzhi,Huang Guangkun,Han Yingxin,Qin Yue,Fang Zhijie
Supported silver nanoparticles (AgNPs) have been extensively used as antibacterial agents in biomedicine, biotechnology, and environmental remediation. However, a facile and scalable method for preparing homogeneously dispersed AgNPs on clay minerals remains a challenge. In this study, a one-pot method was successfully developed for the synthesis of homogeneously dispersed AgNPs supported on the surface of clay minerals (e.g., montmorillonite (Mt) and palygorskite (Pal)). Typically, clay minerals were mixed with AgNO 3 (as a precursor) and NaNO 3 (as a dispersant) by thorough grinding in a mortar, and then the mixture was heated slowly. AgNO₃ undergoes thermal decomposition to generate AgNPs via a self-reduction process, without the assistance of any external reductants. The free ions dissociated by molten NaNO₃ inhibit the aggregation of AgNPs. Specifically, AgNPs were uniformly dispersed on Mt and Pal. Correspondingly, the average particle sizes of the AgNPs were determined to be 10.71 ± 2.16 nm for 6% Ag/Mt-s and 6.07 ± 3.26 nm for 6% Ag/Pal-s, respectively. The antibacterial performance of the nanocomposites was associated with both the concentration of the target materials and their stability in the medium. Specifically, the physicochemical properties of Pal facilitated the small particle size of AgNPs, which in turn enhanced their antibacterial activity. The findings of this study highlight the advantages of utilizing clay minerals as supports to realize the high antibacterial activity of AgNPs. Meanwhile, this study provided a novel and facile strategy for synthesizing silver/clay mineral nanocomposites with homogeneously dispersed silver nanoparticles supported on the surface of clay minerals, without chemical reductants or surfactants. This study provided a theoretical basis for the design and preparation of high-efficiency, low-cost antibacterial silver/clay mineral nanocomposites in the future.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Diankun Song,Yunyun Wu,Jiahui Hua,Chunfeng Shao,Zhaoyang Wei,Jianji Wang,Kai Dai
Imidazolium-based ionic liquids (ILs) exhibit great potential in promoting electrochemical CO 2 reduction reaction (CO 2 RR) by reducing overpotential reduction and enhancing catalytic efficiency. However, the regulatory role of ILs structure in the local physicochemical region at the electrode/electrolyte interface and in reaction kinetics remain unclear. In this study, we designed imidazolium-based ILs with tunable cation alkyl chain length and systematically revealed the dynamic interfacial regulation mechanism controlled by cation structure, based on in-situ infrared spectroscopy and molecular dynamics simulations. The commercial Ag electrodes in electrolytes with critical chain length exhibit nearly 100% Faradaic efficiency for CO production while maintaining high current density. Imidazolium cations with critical chain length effectively regulate the electric double layer at the Ag electrode/electrolyte interface: they notably balance a range of positive and negative factors, including hydrophobicity, CO 2 absorption, conductivity, viscosity, and hydrogen evolution reaction, etc . Collectively, these effects synergistically shape an optimized interfacial local physicochemical region, enhancing the rate of CO 2 catalytic reactions. This work elucidates the mechanistic framework of interfacial regulation in CO 2 RR and delivers molecular design principles for engineering IL-based electrolytes toward enhanced catalytic selectivity.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 11
·877
·
IF 3.504
Guangyu Lei,Jingwen Ma,Zhen Li,Xiaobin Fan,Wenchao Peng,Guoliang Zhang,Fengbao Zhang,Yang Li
In this paper, a facile route has been developed to prepare magnetic trimetallic Au-Ag-γ-Fe2O3/rGO nanocomposites. The impact of the preparation method (the intensity of reductant) on the catalytic performance was investigated. The nanocomposites were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The prepared nanocomposites show fine catalytic activity towards the reduction reaction of 4-nitrophenol (4-NP). The nanocomposites also have superparamagnetism at room temperature, which can be easily separated from the reaction systems by applying an external magnetic field.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2015
·
IF 4.321
Xiaolian Jing,Jiale Huang,Huixuan Wang,Mingming Du,Daohua Sun,Qingbiao Li
Supported Ag catalyst for ethylene epoxidation was prepared by an impregnation–bioreduction process with Cinnamomum camphora (CC) extract. Influence of bioreduction temperature, concentration of CC extract, silver loading amount, calcination temperature as well as Cs promoter on catalytic performance were thoroughly investigated and the catalysts were characterized. The results showed that the catalyst prepared from bioreduction process exhibited excellent performance for the ethylene epoxidation with O 2 . Proper amount of Cs addition could effectively improve the catalytic performance of the catalyst. The optimal catalyst 15Ag/α-Al 2 O 3 -150Cs gave the EO concentrations of 1.70%, EO selectivity of 87.46% and EO STY of 223.07 g h −1 L −1 cat at 200 °C, showing high catalytic stability with no significant decrease in the activity and the selectivity during 50 h.
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Weiwei Li,Ruizhuo Ouyang,Wangyao Zhang,Shuang Zhou,Yang Yang,Yajun Ji,Yang Yang,Kai Feng,Xiaocai Liang,Mingshu Xiao,Yuqing Miao
Single walled carbon nanotube (SWCNT) sandwiched Ni-Ag hybrid nanoparticle layers were developed as electrocatalyst for glucose (Glu) oxidation . By mixing the carboxylated SWCNTs and Ni/Ag ions, Ni/Ag ions were easily adsorbed on both sides of SWCNTs in good order due to the electrostatic interaction between them, forming the Ni/Ag ion doubly adsorbed SWCNTs. Once the electrode modified with Ni/Ag ion doubly adsorbed SWCNTs was immersed in Ni-Ag solution, the Ni/Ag ion doubly adsorbed SWCNTs were immediately surrounded by a large amount of Ni/Ag ions. As the electrodeposition started, the Ni/Ag ions pre-adsorbed on the walls of SWCNTs were first reduced to very small particles as seeds to induce the further growth of Ni-Ag nanoparticles (NPs) on SWCNTs (seed-induced effect), forming the SWCNTs sandwiched Ni-Ag hybrid nanoparticle layers. Compared with the electrodeposition of Ni-Ag on bare GCE , the proposed Ni-Ag/SWCNTs composite was greatly improved in many properties like the particle size of Ni-Ag NPs, the hydrophilicity , the electron transfer ability and the electrocatalytic activity . For Glu electro-oxidation, Ni-Ag/SWCNTs/GCE demonstrated extraordinary electrocatalytic performance where the good linear current responses were obtained in two Glu concentration ranges of 0-2.5 mM and 0-350 μM with correlation coefficients ( R 2 ) of 0.9935 and 0.9985. A high sensitivity of 2946 μA mM ⿿1 cm ⿿2 was achieved with the proposed Ni-Ag/SWCNTs based sensor. More importantly, three excellent linear relations were also achieved in the ranges of 0-11 μM, 10-90 μM and 170-350 μM with R 2 as high as 0.9999 and the detection limits of 0.094, 0.076 and 0.062 μM, respectively. The new method was successfully applied to Glu detection in blood samples with preferable accuracy and precision.
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2014
·
IF 6.451
Pengjuan Ni,Yujing Sun,Haichao Dai,Jingting Hu,Shu Jiang,Yilin Wang,Zhuang Li
Glutathione (GSH) plays an important role in the biological system and serves many cellular functions. Since all of the biothiols possess similar functional groups, it is still challenging to selectively detect GSH over cysteine (Cys) and homocysteine (Hcy). In this work, a novel and simple colorimetric method for discriminative detection of glutathione (GSH) over Cys and Hcy is developed. The proposed method is based on the fact that Ag [I] ion could oxidize 3,3′,5,5′,-tetramethylbenzidine (TMB) to the oxidized TMB to induce a blue color and an absorption peak centered at 652 nm. However, the introduction of GSH could cause the reduction of oxidized TMB and it could also combine with Ag + , both of which result in a blue color fading and a decrease of the absorbance at 652 nm. Based on this finding, we propose a method to qualitatively and quantitatively detect GSH by naked eyes and UV–vis spectroscopy, respectively. The proposed method shows a low detection limit of 0.1 µM by naked eyes and 0.05 µM with the help of UV–vis spectroscopy. In addition, this method has great potential in discriminatively detecting GSH over other amino acid and biothiols. More importantly, this method is simple and fast without the preparation of nanomaterials and has also been successfully applied to the detection of GSH in biological fluids.
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Ying Xu,Yang Zhang,Zhiyu Li,Yuanrong Liao,Rongjian Sa,Hualiang Yu,Yizhi Wang,Jing Peng,Yan Lin,Jun Wang
Electrospinning is a prominent technique for fabricating polymer-stabilized composite nanofibers for surface-enhanced Raman scattering (SERS). However, further exploration of the surface chemistry of these electrospun composite substrates is crucial to manipulate the charge transfer (CT) effect and achieve synergistic effects between CT and localized surface plasmon resonance (LSPR) for enhanced bio-labeling and pesticide detection. Here, we present the development of a flexible and self-supporting SERS substrate using electrospinning, consisting of polymer-coated silver nanowires (AgNWs). By employing different polymer shells and probe molecules, we strategically adjusted the energy levels of the frontier orbitals , enabling effective control over the CT effect. The resulting nanofibers exhibited optimized selectivity and sensitivity through multiple CT routes, enabling the detection of thiram in apple skin using a convenient wiping sampling method with a low limit of detection (LOD) of 5 ng/cm². We also investigated other pesticides without viable CT routes to demonstrate the versatility of the composite substrates, although they exhibited relatively lower selectivity and sensitivity due to the absence of synergistic effects. This study highlights the potential of CT manipulation in harnessing synergistic effects in electrospun 2D composite nanofibers , thereby advancing the practical applications of SERS technology.
研究领域:
材料科学
·
纳米技术
·
分析化学
·
环境监测
·
生物传感
✓ 已验证
DOI
高影响因子
OPTICS LETTERS
·
2018
·Vol. 43
·期 10
·2244-2247
·
IF 3.589
Ruibin Lin,Liang Hu,Jinzhang Wang,Wenjing Zhang,Shuangchen Ruan,Yu-Jia Zeng
© 2018 Optical Society of
America
✓ 已验证
DOI
高影响因子
ENERGY
·
2026
·
IF 10.1
Xiaonan Lv,Song Liu,Keyan Zeng,Jie Chen,Jie Song,Rengui Xiao,Xiang Ke
Organic polymer materials are promising for energy storage owing to their high safety and structural tunability. However, their practical application is hindered by poor cycling stability, low electrical conductivity, and high solubility. This study utilized the silver nitrate (AgNO 3 ) displacement reaction to innovatively in situ construct a sandwich-structured organic electrode with nanomesh metal-based SEI film. It effectively addressed the limitations of the two interface layers of active material/electrolyte and active material/collector to achieve interfacial stabilization and fast ion transport. The three-dimensional mesh metal-based artificial SEI layer with attached nanoparticles not only effectively inhibits the electrode material from being attacked by the electrolyte and reduces the solubility of organic materials, but also the attached nanoparticles can enhance the conductivity of the material. In addition, the pure Ag metal layer between the active material and the Cu foil collector can effectively improve the electrical conductivity and accelerate the electron transfer, which plays a key role in keeping the internal resistance stability of the battery. The composite electrode material exhibits excellent rate performance and stable long cycling performance at a high rate (46.1 mAh g −1 after 2000 cycles at 20 C, 1 C = 223 mAh g −1 ). Furthermore, Density functional theory (DFT) calculations and theoretical analysis provided detailed explanations of the energy storage pathways and utilized the electronic structure to reveal the synergistic effect mechanism existing among the sandwich structures. Therefore, providing a new strategy for designing organic polymer materials to be used in high-performance energy storage devices in the future.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122282
·
IF 7.5
Dehong Xu,Siqi Chen,Linan Zhou,Fang Zhang,Huiyi Yang,Liangzi Cao,Rongxin Tan,Fang Chai
The toxicity of silver ion (Ag + ) poses a serious threat to the environment and food safety, therefore, the accurate, economical and efficient monitoring of Ag + is crucial for protecting human health and environment. However, constructing an efficient, versatile platform that enables precise sensing of heavy metal ions remains challenging. Here, carbon dots (TN-CDs) were fabricated and optimized using p-phenylenediamine and p-toluenesulfonyl azide as precursors, with orange emission of 606 nm and quantum yield of 9.96%. The TN-CDs achieved highly sensitive, and selective detection of Ag + based on the static quenching effect, with a limit of detection (LOD) at 9.3 nM. Further, the TN-CDs extended test paper inherited the excellent sensing performance unequivocally and exhibited superior stability and accuracy with long-term storage. Thus, a smartphone-assisted strategy was developed and enabled rapid, portable Ag + detection with a convenient visual readout, accomplishing the LOD at 75.79 nM. Notably, the tests in real water samples, soil, and food samples attained excellent recoveries within 95.10–105.76%, confirming their excellent environmental tolerance and potential applicable capability. This work provided an efficient synthetic strategy for N-doped CDs with sensing capability, emphasizing their potential for application in food safety, healthcare, and environmental conservation.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Denghui Tang,Wenchang Wang,Zhiyao Ming,Tian Fang,Qihu Wu,Minxian Wu,Pengju Wang,Shuiping Qin,Naotoshi Mitsuzaki,Zhidong Chen
This study successfully prepared Se–Sb–Ag optoelectronic alloy coatings by pulse electrodeposition in deep eutectic solvents (DESs). The electrochemical behavior of SeO2, SbCl3, and Ag2SO4, in a choline chloride-ethylene glycol DES, was systematically investigated using cyclic voltammetry (CV) and chronoamperometry (CA). CV and CA results revealed an induced codeposition mechanism. The nucleation mechanism of the Se–Sb–Ag alloy coatings between −0.30 V and −0.70 V was identified as a diffusion-controlled three-dimensional (3D) instantaneous process. The effects of pulse potential on surface morphology, composition, crystal structure, and photoelectrical properties of the coatings were systematically examined. The SEM results indicated distinct potential-dependent nanostructural evolution. A moderate negative shift produced smaller secondary nanoparticles and denser, more uniform coatings, whereas an excessive negative potential led to finer but loosely packed nanograins with increased porosity and reduced compactness. The EDS results demonstrated that Ag content initially decreased and then stabilized, Sb content first increased and then declined, while Se content showed an overall increasing trend. The crystalline phases were mainly Ag, Se, Sb, and Ag2Se phases. The coatings exhibited p-type semiconducting behavior. The band gap increased from 0.66 eV to a maximum of 0.76 eV as the electrodeposition potential shifted negatively, followed by a decrease to 0.72 eV at more negative potentials. A similar trend was observed in photocurrent density, which reached a maximum of 0.24 mA/cm2 at −0.80 V. By taking advantage of the strong complexation and solvation capabilities of DESs, this work demonstrates a pulse electrodeposition route suitable for reusing semiconductor elements such as Se and Ag. The electrodeposition mechanism of Se–Sb–Ag ternary coatings was clarified, and pulse deposition in DESs was shown to enable controlled tuning of their structural and photoelectrical properties. These findings indicate that DES-based electrodeposition holds promise for the green preparation of optoelectronic semiconductor materials.
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Lei Chen,Rui Xu,Zhi Yang,Fuyu Chang,Lu Yang,Yoonseop Byun,Eunsoo Song,Eungyeong Park,Lihui Liu,Young Mee Jung
The two-dimensional (2D) layered structure of MXene provides a large specific surface area, making it an ideal platform for optimizing geometric configurations in surface-enhanced Raman scattering (SERS) applications. In this study, we developed a novel ternary core-shell nanostructure, Ag@Cu2O-MXene, in which Ag@Cu2O core-shell nanoparticles (NPs) are uniformly anchored onto 2D Ti3C2Tx MXene nanosheets. The Ag NPs exhibit strong localized surface plasmon resonance, while the narrow bandgap and high electron mobility of Cu2O shell promote efficient charge transfer. Importantly, plasmonic coupling between the Ag core and the MXene substrate further enhances plasmon absorption, resulting in a substantial increase in SERS activity and enabling highly sensitive molecular detection. Using this composite, we achieved an ultra-low detection limit of 10–9 M for methylene blue. MXene substrate further facilitates rapid electron transfer from the Ag core to the the Cu2O shell, while its surface defects contribute additional charge carriers to Cu₂O, enhancing the utilization of photogenerated electron. Notably, the SERS enhancement was positively correlated with the thickness of Cu2O shell, highlighting the tunable nature of the Ag@Cu2O-MXene core-shell nanostructure.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）