APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Xueer Ning,Aize Hao,Yali Cao,Na lv,Dianzeng Jia
The highly efficient piezocatalysts of Ag decorated ZnO nanocrystals (Ag-ZnO) have been designed and synthesized. Remarkably, piezocatalytic activity of Ag-ZnO depends on Ag concentrations. The piezocatalyst with suitable amount of 15% Ag-ZnO presents excellent piezocatalytic activity towards methylene orange (MO) organic dye degradation under ultrasonic vibration. The reaction rate constant of 15% Ag-ZnO is up to 19.58 × 10 −3 min −1 , which is 4.2 times in contrast with pure ZnO. Piezocatalytic efficiency of 15% Ag-ZnO reaches to ~ 90.5% after 120 min via combining piezoelectric effect with electrochemical synergistic coupling strategy. It also demonstrates that Ag decorated and piezo-electrochemical synergistic coupling effects can induce large amount polarization electric charges to form active superoxide radicals (·O 2 − ) and hydroxyl radical (·OH), further greatly facilitate the carriers transport and accelerate the electric charges carrier separation of the reaction kinetics process resulting in promoting the piezocatalytic degradation activity. Furthermore, a novel piezocatalytic mechanism has been put forward to elucidate the relationship between piezocatalytic decomposition performance and contribution in Ag decorated, and piezo-electrochemical synergistic coupling effects. The promising strategy provides an innovative guidance and idea for designing excellent performance piezocatalyst in dye wastewater decolorization treatment application.
研究领域:
材料科学
·
环境催化
·
纳米材料
·
能量转换
·
废水处理
✓ 已验证
DOI
高影响因子
CARBON
·
2018
·
IF 7.082
Lixin Xia,Meng Xu,Guangzhen Cheng,Lini Yang,Yushu Guo,Dan Li,Dawei Fang,Qian Zhang,Hongyang Liu
A facile glucose assisted one-step method for preparing highly dispersed Ag nanoparticles (Ag-NPs) encapsulated into carbon nanotubes (CNTs) was developed. The CNTs with open tips are employed as the nano-reactor and support, silver nitrite (AgNO 3 ) is used as the precursor and glucose is employed both as the reducing and protecting agent in the whole preparation process. The Ag-NPs with diameters of 6–10 nm are uniformly assembled into the channel of CNTs. The detailed structure and morphology of Ag-NPs encapsulated into CNTs (Ag-NPs@CNTs) were systematically characterized. The obtained Ag-NPs@CNTs exhibits an enhanced antibacterial activity against Escherichia coli , comparing with those of Ag-NPs supported on activate carbon (Ag-NPs/AC) and on CNTs (Ag-NPs/CNTs) prepared by the traditional wetness impregnation method.
研究领域:
纳米材料
·
抗菌材料
·
纳米技术
·
材料化学
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DOI
高影响因子
SCRIPTA MATERIALIA
·
2013
·Vol. 69
·期 8
·574-577
·
IF 2.821
Limeng Liu,Lianbing Zhong,Baoyou Zhang,Zhonghong Lai,Feng Ye,Zhiguo Zhang,Yu Zhou
The effects of the addition of 5 mol.% aluminum , copper, silver or gold on the densification , microstructures, mechanical properties and oxidation resistance in thin air of TaC ceramics were investigated. Full density and relatively high flexural strength (up to 738 MPa) were observed in the case of the Au addition after spark plasma sintering at 1700 °C for 5 min under 30 MPa pressure. Due to wetting of the TaC grains by a thin metallic film , the consolidated materials showed enhanced oxidation resistance against thin air.
研究领域:
材料科学
·
陶瓷
·
冶金学
·
高温材料
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DOI
高影响因子
Russian Journal of Physical Chemistry A
·
2025
·Vol. 99
·期 5
·991-1000
·
IF 0.8
Ji Xiang,Zeng Lingyun,Wang Lingjuan,Wang Zhipeng,Zhu Hailong,Lu Yanzhen,Rao Richuan,Wang Fangkuo
— It is of great significance to prepare high-performance non-precious metal catalysts for hydrogen evolution from the ammonia borane (NH 3 BH 3 , AB). Here, a series of cost-effective and high-performing Ag–Co 3 O 4 nanocatalysts were prepared using AgNO 3 and Co(NO 3 ) 2 ⋅6H 2 O as precursors. The influence of varying doping amounts of Ag atoms (10 mg AgNO 3 , 20 mg AgNO 3 , 40 mg AgNO 3 , 60 mg AgNO 3 ) and heat treatment temperatures (300, 400, 500, 600°C) on the catalytic activity of the Ag–Co 3 O 4 nanocatalysts for AB hydrolysis was investigated. The obtained results reveal that the Ag–Co 3 O 4 nanocatalysts exhibit a well-defined nano-flower morphology with homogeneous distribution of silver atoms over the Co 3 O 4 surface. Moreover, an evident electronic synergy between Ag and Co 3 O 4 is observed. The 20-Ag–Co-500 catalyst (doped with 20 mg of AgNO 3 and subjected to heat treatment at 500°C) exhibits exceptional catalytic activity towards AB hydrolysis (TOF = 348.03 \({\text{mo}}{{{\text{l}}}_{{{{{\text{H}}}_{{\text{2}}}}}}}\) min –1 \({\text{mol}}_{{{\text{Ag}}}}^{{ - 1}}\) and E a = 56.20 kJ/mol).
研究领域:
材料科学
·
催化化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Lian Cheng,Kai Liu,Huayun Gao,Zhongming Fan,Naohisa Takesue,Heming Deng,Haibo Zhang,Yongming Hu,Hua Tan,Zilin Yan,Yang Liu
Recent years witness a rapid surge in the research efforts on dielectric capacitors due to their high power density and fast charge/discharge speed. However, the relatively low energy density demands more efforts to meet the lightweight and compact requirement for practical applications. Here, we report sandwich-structured nanocomposite films with strawberry-like Ag@SrTiO 3 nanofillers. The introduction of Ag nanoparticles (NPs) on SrTiO 3 NPs could significantly improve dielectric properties, breakdown strength, energy storage density, and efficiency. As a result, a dramatically enhanced discharged energy density (24.6 J/cm 3 ) and efficiency (86.3%) are reached in sandwich-structured nanocomposite films containing 1.5 wt% Ag@SrTiO 3 nanofillers by the solution casting method. The enhancement of dielectric constant and breakdown strength of nanocomposite films is attributed to the Coulomb-blockade effect of Ag NPs, which inhibits the transformation of electrons. Our finite element simulation explicitly demonstrates that the Coulomb-blockade effect of Ag NPs can effectively improve energy storage performance, which therefore supports the experimental results.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Tao He,Shuang Xiong,Haobin Han,Dalei Wang,Yueyue Wang,Chaoqing Dai,Wei Liu
The composite structure composed of GO and Ag has better sensing ability and is widely used as SERS substrates. However, there are few studies on the influence of external environment such as light on the stability of GO and Ag composite structure. In fact, GO can effectively prevent Ag from oxidation , so it is necessary to deeply study the mechanism of GO protection. In view of this, we prepare Ag microspheres on glass slides by one-step reduction method, and spin-coated with GO as surface enhanced Raman scattering (SERS) strips for the detection of organic molecules R6G . The detection limit is as low as 10 −12 M. The linearity of the detection results is significantly corrected by using the GO characteristic peak as the internal standard (IS). The effects of xenon lamp simulate sunlight irradiation on the SERS performance of Ag substrate and Ag/GO Raman strips are investigated comparatively. We find that the Ag/GO composite structure can maintain good stability without the influence of light compared to the Ag substrate. We discuss the dynamic variation of Ag and Ag/GO substrates during the light exposure. Bacterial inhibition experiments further demonstrate the protective effect of GO on Ag. The conclusions of this paper have potential applications for improving the stability of SERS substrates.
研究领域:
材料科学
·
分析化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.3
Yiyang Bi,Fuyu Jiang,PeiLin Liu,Yuchun Wan,Lianshan Sun,Wanqiang Liu
Aqueous zinc-ion batteries (AZIBs) are viewed as competitive candidates for high-energy-density storage. However, the performance of AZIBs is impeded by dendrite growth and side reactions on the zinc anode surface. Herein, a facile in situ galvanic replacement strategy assisted by ammonium persulfate (APS)-assisted surface etching is proposed to construct a zincophilic Ag-modified interface on Zn metal, enabling dynamic regulation of Zn 2+ nucleation and deposition behavior. As a result, the Zn@Ag anode exhibits a significantly reduced Zn 2+ nucleation energy barrier (from 47.2 to 31.2 kJ mol −1 ), enabling uniform and dense Zn deposition while effectively suppressing dendrite formation and interfacial side reactions. Meanwhile, COMSOL simulations based on the finite element method verified the key role of the Ag-modified interface in suppressing dendrite formation and mitigating interfacial corrosion. At current densities of 1 mAh cm −2 , a symmetric cell with the Zn@Ag interfacial layer as the anode achieved a cycle life of 1757 h (39 times that of bare Zn). Moreover, the Zn@Ag || V 2 O 5 full cell has a cycle stability of over 2800 cycles. This method provides a new strategy for the design of anodes in AZIBs.
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 14
·1095
·
IF 3.2
Xu Xiaoli,Jin Zhihong,Ma Wei,Sun Guorong,Nan Wenzi,Ma Shuyi
It is demanding to exploit highly efficient ethanol sensors due to the malign irritating effects and explosion risks. This paper reports an excellent ethanol sensor based on metal–organic frameworks (MOFs)-derived Ag@ZnO nanoparticles (NPs). Specifically, 1.25 wt% Ag@ZnO sensor exhibits a ninefold improvement of response at 230 ℃ (~ 120, to 100 ppm ethanol), besides the short response time (~ 5 s) and a low theoretical detection limit (35 ppb). We propose that the optimized Ag dopant boosts sensing performances due to the electronic/chemical sensitization effects, besides the increased oxygen vacancies and nano-heterojunctions. The superior sensitivity and selectivity of the innovative ZIF-8 derived Ag@ZnO sensors may provide a valuable reference for promising ethanol sensing applications.
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DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2026
·Vol. 173
·期 4
·040504
·
IF 3.5
Chang Liu,Mingjie Shi,Fafei Nie,Lingjian Meng,Zhongxiang Zhang,Fukun Ma,Yanmei Lei,Guidong Gao,Ningning Xing,Wenjie Tan,Yuanxing Cai
The development of electrode materials that combine high scalability with outstanding electrochemical performance is crucial for advancing lithium-ion battery technologies. Among various anode material systems, bimetallic organic frameworks have attracted extensive attention due to their ability to provide additional active sites and generate significant synergistic enhancement effects through the introduction of two distinct metal centers. However, their practical application in lithium-ion batteries is hindered by limited electron transport and insufficient structural stability during cycling. Therefore, we adopt a photoredox strategy to in situ deposit Ag nanoparticles on the surface of FeCo-MOF and successfully fabricated the Ag@FeCo-MOF composite anode material. The excellent electrochemical performance is primarily attributed to the high specific surface area of the MOF carrier and the synergistic effect of the bimetallic active sites. Meanwhile, the successful loading of Ag nanoparticles has constructed an efficient three-dimensional conductive network, increasing electronic conductivity by 100 times and significantly accelerating electron transport kinetics. Electrochemical tests indicate that the initial discharge specific capacity of Ag@FeCo-MOF is 534.2 mAh g−1 at a current density of 500 mA g−1, with Coulombic efficiency exceeding 98%. After 500 cycles, the discharge capacity remains at 513.9 mAh g−1 without significant decay.
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DOI
高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Fengting Xie,Xuxin Kang,Zongtai Li,Honglin Zhu,Lei Wang,Ziyang Wu,Jianping Yang
Electrochemical nitrate reduction (NO 3 RR) under ambient conditions offers a sustainable route for ammonia (NH 3 ) synthesis; however, its efficiency is restricted by the kinetic mismatch between water dissociation and nitrate hydrogenation. Here, we design Ag/CoNiS heterostructures in which Ag loading density programs interfacial confinement to regulate hydrogen spillover from CoNiS water-activation domains to Ag-associated nitrate/nitrogen oxide (NO x ) intermediates, thereby coupling * H generation, relay, and deep nitrate hydrogenation. The optimized Ag M /CoNiS achieves an NH 3 yield of 22.31 mg h −1 cm −2 with 99.13% Faradaic efficiency. In situ Raman, distribution of relaxation times (DRT) analysis, hydrogen/deuterium (H/D) isotope experiments, and tert-butanol (TBA) perturbation tests reveal that the confined Ag–CoNiS interface regulates interfacial water and establishes a balanced * H supply–consumption regime, thereby suppressing competing hydrogen evolution. Density functional theory (DFT) calculations further show that Ag facilitates nitrate deoxygenation, whereas excessive Ag coverage weakens Co/Ni-centered water activation, explaining the volcano-type activity trend. Coupling NO 3 RR with the sulfide oxidation reaction (SOR) further enables a low-voltage NO 3 RR||SOR electrolyzer, requiring only 0.70 V at 50 mA cm −2 for energy-saving co-production of ammonia and sulfur.
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DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2026
·
IF 3.9
Juan Wei,Yilong Li,Xinyan Chen,Xing Zhou,Lu Li
A PBA/Rh6G ratiometric sensing platform was constructed by simple fluorophore mixing. • The system enabled sensitive Ag + detection with a LOD of 6.8 × 10 −14 mol L −1 . • Ratiometric readout improved repeatability and enabled reliable analysis of real water samples. The sensitive and accurate detection of silver ions (Ag + ) is of considerable significance for environmental monitoring and health risk assessment. To address the susceptibility of single-channel fluorescence detection to variations in probe concentration, excitation intensity, and sample matrix effects, a dual-channel ratiometric fluorescence sensing system for Ag + detection was constructed by directly mixing 1-pyrenebutyric acid (PBA) and rhodamine 6G (Rh6G). In this system, PBA served as the Ag + -responsive unit and exhibited a characteristic emission at approximately 400 nm under excitation at 328 nm, with its fluorescence intensity decreasing as the total Ag + concentration increased. Rh6G provided a relatively stable reference signal at approximately 578 nm, and the fluorescence intensity ratio I 400 /I 578 was used as the ratiometric response parameter. Suitable conditions for dual-channel detection were established by systematically optimizing the concentrations of PBA and Rh6G, the DMSO volume fraction, pH, and reaction time. The results showed a good linear relationship between the ratiometric fluorescence signal and the logarithm of the total Ag + concentration (R 2 = 0.992), with a detection limit as low as 6.8 × 10 −14 mol L −1 . Preliminary analysis of spiked campus lake water samples yielded recoveries ranging from 95% to 105%. Without requiring complex nanomaterial synthesis or multistep surface functionalization, this method provides a simple strategy for constructing ratiometric fluorescence sensing systems for Ag + detection. Download: Download high-res image (310KB) Download: Download full-size image
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DOI
高影响因子
International Journal of Coal Science & Technology
·
2026
·Vol. 13
·期 1
·51
·
IF 10.1
Deng Wenyao,Bao Guirong,Li Kongzhai,Wang An,Ji Xuewu,Liu Li,Gao Peng,Wang Hua,Luo Jia
C = C and C = O selective hydrogenation in aromatic compounds is a key capability of supported active metal catalysts, leading to numerous practical applications. Here, carbon dots (CDs) material was produced by microwave-assisted hydrothermal method, and used as the carrier and reducing agent to develop PdAg/CDs composite catalyst. PdAg/CDs fabricated by photochemical reduction with UV-light demonstrated high selectivity for hydrogenation of cinnamic aldehyde (CAL) into hydrocinnamic alcohol (HCOL). With PdAg/CDs, 100% of CAL conversion and 90.0% of selectivity to HCOL were obtained at 140 °C, 3 h and 1 MPa H 2 in water. The improved catalytic performance of the PdAg/CDs catalyst was mainly due to the formation of Pd-Ag alloy and synergetic effect between Pd and Ag.
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DOI
高影响因子
危险品化学品经营许可证（带存储）