INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Lihua Yang,Yu Jing,Linxiang Zhou,Dongming Qi,Xianghai Liao,Huan Wang,Kai Chen
The components and engineered structures of nanomaterials significantly influence their properties and functionalities. Inspired by the effective interfacial interactions between natural viruses and host cells, we developed a novel virus-like lignin/silver (Ag) nanoparticle with a spiky surface designed for antibacterial and antioxidant therapies. This study comprehensively examined the antibacterial performance of these composite materials with different morphologies against E. coli and S. aureus . It is worth noting that their rough surfaces enhanced bacterial adhesion, and reduced the effective interaction distance between ROS, Ag + , and bacteria, thereby significantly enhancing the antimicrobial activity. In vitro, results demonstrate the minimum inhibitory concentrations of virus-like lignin/silver (Ag) nanoparticles against S. aureus (Gram-positive) and E. coli (Gram-negative) are 1.95 μg/mL and 3.9 μg/mL, respectively. According to the international standard ISO 2009 “Biological Evaluation of Medical Devices”, F1-LNS@Ag-60 has higher biosafety compared to colloidal Ag NPs. Additionally, the radical clearance rate of F1-LNS@Ag-x for ABTS· + reaches 88.9 %, indicating substantial potential for wound dressing applications. Furthermore, evaluations of masks reveal that these nanoparticles can effectively eliminate bacteria on the mask surface within 30 min, highlighting their promising potential in personal protection. The concepts and design for modulating the structure of these virus-like nanoparticles hold considerable promise for developing novel, environmentally friendly, and highly efficient lignin-based antibacterial materials to address antibiotic overuse.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yuan Li,Shaoqian Jia,Ling-Xin Kong,Xiaotian Guo,Xinyi Lin,Dae Joon Kang,Huan Pang,Feng Yu
Accurate detection of nitrite plays a vital role in public health because excessive intake poses serious health risks. Metal-organic frameworks (MOFs) and their derivatives have emerged as a promising platforms for nitrite detection due to their adjustable structures and functionalization capabilities. In this study, we synthesized Ag/Cu-BTC by doping silver ions during Cu-BTC synthesis, followed by high-temperature carbonization to produce carbon-supported Ag-Cu bimetallic nanoparticles (Ag/Cu@C) for effective nitrite sensing. The carbon framework from MOF precursors not only enhances electrical conductivity and stability but also prevents nanoparticle aggregation. Silver addition enhances electron transfer efficiency and alters the electronic structure through synergistic interactions with copper, resulting in increased catalytic activity. The optimized Ag/Cu@C composite shows excellent sensing performance with a detection limit of 50 nM, high sensitivity (855.32 μA mM −1 cm −2 ), and a wide linear response range (0.2–10,000 μM). The sensor maintains 98.5–103.2 % recovery against 10-fold concentrations of common interferents (Cl - , NO 3 - , SO 4 2- , glucose), and retains 92.3 % initial current after 28 days, demonstrating exceptional selectivity and operational stability. These features highlight its significant potential for practical applications in environmental monitoring and food safety testing.
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Surfaces and Interfaces
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2025
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IF 6.3
Xiao Ling,Xiaofeng Guo,Ke Wang,Ziming Huang,Zhixuan Mo,Huibo Qin,Linhai Duan,Xiuhong Meng,Hui Wang
Photocatalytic degradation of organic pollutants in water represents a highly promising strategy for environmental remediation. However, conventional photocatalysts are hampered by their inefficient employment of visible light energy and the propensity of photoinduced charge carriers to undergo recombination. To overcome these limitations, Z-scheme photocatalyst UiO-66-NO 2 @ Ag/AgCl (UiO@Ag-X, where X denotes the Ag/AgCl content) composites were designed and prepared. The crystal structure, morphology, photocatalytic performance, light absorption capacity, and carrier separation efficiency were systematically tested. Optical and electrochemical measurements revealed that the incorporation of Ag/AgCl enhanced the segregation and transfer efficiency of charge, which is crucial for boosting photocatalytic activity. These improvements directly contributed to the enhanced degradation efficiency observed in subsequent experiments. In experiments using methyl violet (MV) as the model pollutant, the photocatalytic degradation performance of UiO@Ag-X samples was evaluated. Among these samples, UiO@Ag-50 achieved a remarkable degradation efficiency under light irradiation. Moreover, the corresponding kinetic rate constant was about 0.04724 min -1 , which was higher than that of UiO-66-NO 2 . Quenching experiments were employed to investigate the mechanisms related to photocatalysis. The results show that hydroxyl radicals play an important role in the degradation of MV.
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JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Jiale Wang,Xinrui Qiang,Bingzhe Jia,Lei Wang,Jiarui Li,Haibo Che,Yichi Liu,Zhiqiang Li,Xinming Wu
MXene shows great potential in the field of flexible electrodes owing to its distinctive two-dimensional structure, high conductivity, and large specific surface area. Nonetheless, during repeated bending, the bonding between the electrode and the conductive substrate weakens, which leads to a decrease in conductivity and, ultimately, a decline in the cycling stability of flexible devices, limiting their practical applications. Based on this, this paper presents the preparation of a MXene-Ag composite with excellent flexibility and cycling stability through a simple redox reaction. Electrochemical performance tests reveal that the material achieves a high specific capacitance of 191 F g −1 at a current density of 1 A g −1 and demonstrates an impressive capacity retention of 95.8 % after 10000 cycles at 5 A g −1 . To further assess the electrochemical performance under bending conditions, MXene-Ag//AC flexible asymmetric solid-state supercapacitors are assembled. Surprisingly, after 1250 charge/discharge cycles at bending angles of 30°, 60°, and 90°, the device still maintains a capacitance retention of 97.2 % (5 A g −1 ), which is a 7 % increase compared to before Ag loading. This demonstrates that the addition of Ag contributes to the improved electrochemical cycling stability of the flexible device.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
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IF 4.6
Jian Mao,Chu Chen,Hongyan Zhang,Haiyang Zhang
In this study, a high-performance ammonia (NH 3 ) gas sensor based on silver nanoparticles (AgNPs)-modified polyaniline (PANI)/tin dioxide (SnO 2 ) composite (Ag/PANI/SnO 2 ) was fabricated via a hydrothermal method. Gas-sensing performance evaluations revealed that incorporating PANI reduced both the response and recovery times of SnO 2 to NH 3 at room temperature. This phenomenon is attributed to the p-n heterojunction formed at the PANI/SnO 2 interface, which enhances charge carrier separation and mobility, thereby facilitating rapid modulation of the depletion layer width and the potential barrier height. Additionally, the integration of AgNPs significantly amplified the sensor's response to NH 3 , owing to the provision of additional oxygen free radicals (O 2 - (ads) ) that promote adsorption and reaction with NH 3 molecules. Compared to pristine SnO 2 , the Ag/PANI/SnO 2 composite exhibited a remarkable reduction in response time from 15.72 s to 1.18 s and in recovery time from 3.75 s to 1.23 s for 1000 ppm NH 3 . The response value increased by 382.07 times from 13.5 to 5158, representing a significant enhancement over pristine SnO 2 . Moreover, experiments showed that Ag/PANI/SnO 2 can be used to detect beef freshness based on monitoring the concentration of NH 3 generated from the reaction between microorganisms and amino acids on the beef surface during spoilage, thereby expanding the application scope of NH 3 sensors.
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Frontiers of Chemical Science and Engineering
·
2025
·Vol. 19
·期 12
·1-11
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IF 4.5
Pan Chunhong,Wang Biao,Mao Jinman,Li Mengjia,Wang Huimin,Chen Wenyi,Gao Feng,Hu Guoping,Fan Xiaolei,Huang Feng
Reverse water-gas shift reaction represents a strategic pathway for CO 2 utilization. Despite its potential, reverse water-gas shift reaction via conventional thermal-catalysis faces several challenges, including low equilibrium conversion rates due to thermodynamic constraints, high energy consumption, and insufficient product selectivity. Here, this study demonstrates an evident synergetic effect between plasma and Ag/ZnO, on enhancing reverse water-gas shift reaction. The plasma catalytic system achieved significantly improved performance with a remarkable CO 2 conversion rate of 76.5%, a high CO selectivity of 96.8% and a CO yield of 74.1%, along with an energy efficiency as high as 0.19 mmol·kJ −1 , surpassing the plasma alone system and ZnO catalytic systems. Results from X-ray photoelectron spectroscopy and Auger electron spectroscopy confirm the presence of electronic metal-support interactions between Ag and ZnO, which facilitates the formation of electron-deficient Ag sites and partially reduced ZnO x species. These reactive sites, along with oxygen vacancies created during reduction treatment, enhance the adsorption and activation of H 2 and CO 2 , offering a dominant plasma-assisted surface reaction pathway for the improved reverse water-gas shift reaction. These findings underscore the crucial role of electronic metal-support interactions in manipulating surface environments to facilitate efficient plasma-assisted catalytic reactions, with significant implications for the rational design of catalysts capable of converting CO 2 efficiently under mild conditions.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xiaojie Chai,Zeyu Yan,Miaoru Wang,Jun Jiang,Dingding Suo,Yan Liu,Jianlong Ji,Shengbo Sang
Memristors has been considered as a promising candidate for synaptic devices in next-generation neuromorphic computing. The two-dimensional MXene attracts considerable interest for use in memristor devices owing to its excellent physicochemical properties. However, MXene-based devices still suffer from unsteady conductive filaments and significant degradation. In this work, we present a highly-robust multilevel resistive switching memristor based Ti 3 C 2 T x by alkalization synthesis process and incorporate doped Ag nanoparticles into the active layer. This memristor exhibits a significant improvement in the uniformity of device parameters, including low threshold voltages, high switching ratio, high endurance, and long data retention compared to conventional memristors. The Ag nanoparticles embedded in oxidized Ti 3 C 2 T x renders a reduced variability in threshold voltages from 33 % to 8 %. Additionally, a remarkable accuracy (∼92.69 %) is achieved on the handwritten digits dataset by constructing an artificial neural network based on a memristor array. Overall, the proposed effective strategy could advance the performance of future manufactured MXene-based memristors.
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ACS Omega
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2025
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IF 4.3
Ramarajan Ramanathan,Ashish Kumar,Himamaheswara Rao,Raj Kumar Samudrala
Researchers are actively investigating cost-effective, indium-free n-type transparent conducting oxides (TCOs) for optoelectronic applications. Silver-doped SnO2 (ASO) thin films, fabricated via spray deposition, serve as promising alternative electrodes for dye-sensitized solar cells (DSSCs), where Ag doping optimizes the electrical and optical properties. The structural, morphological, optical, and electrical transport properties of the as-deposited ASO thin films were analyzed using X-ray diffraction, field-emission scanning electron microscopy, X-ray photoelectron spectroscopy, UV–vis spectroscopy, and Hall effect measurements to assess phase composition, surface morphology, elemental states, optical behavior, and charge transport characteristics. At 0.4 wt % Ag (ASO4), the film exhibits 88.7% transmittance in the visible range, a wide bandgap of 3.73 eV, and low resistivity (4.26 × 10–4 Ω cm) with a sheet resistance of 18.6 Ω/□, making it a superior TCO candidate. To understand charge transport mechanisms, Arrhenius analysis was used to determine activation energies, while a four-probe method revealed resistance stability up to 400 °C. The power conversion efficiency (PCE) of the DSSC device was effectively optimized using ASO electrodes, where varying Ag concentrations played a crucial role in enhancing efficiency. Notably, the ASO4 film demonstrated a remarkable PCE of 4.69%. Integrating ASO electrodes into DSSCs yielded enhanced PCE, reinforcing their viability as a cost-effective replacement for ITO/FTO electrodes in the next-generation solar technology.
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AICHE JOURNAL
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2025
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IF 4
Xueqi Shi,Kai Liu,Na Wang,Qiuyan Ding,Zhenyu Zhao,Hong Li,Xin Gao
The actual applications of extraction methods for α -olefins separation are limited by their long time and high energy consumption. Hence, this study employs microwave technology to intensify the extraction process using Ag-based ionic liquid (Ag-IL), where the influence of microwave irradiation and the mechanism of microwave-assisted ionic liquid extraction (MAILE) are investigated, along with a comprehensive techno-economic analysis of process feasibility. The results of COSMO-RS and DFT simulations demonstrate the dominant role of π-complexation in identifying Ag-IL with high selectivity, indicating the possible enhancement caused by microwave irradiation. The subsequent kinetic experiments show that compared with conventional routes, the MAILE accelerated the extraction process by approximately 89.72%. As a result, the total annual cost of unit product of the overall process is reduced by 6.43% according to techno-economic analysis by Aspen Plus, indicating that MAILE is a cost-effective, scalable, and sustainable approach to α -olefin separation, offering process efficiency and environmental sustainability.
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Journal of Materials Chemistry C
·
2025
·Vol. 13
·期 10
·4974-4982
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IF 5.1
Yanyan Duan,Jiangning Li,Biao Wang,Qiong Li,Zhiheng Wu,Jing Mao,Wei Zhang,Guosheng Shao,Yonglong Shen
Lead-free Cs2AgBiBr6 double perovskite solar cells (PSCs) possess unique environment-friendly and stable attributes. However, the wide bandgap of Cs2AgBiBr6 weakens the light capture capability, thus limiting the improvement in power conversion efficiency (PCE) for PSCs. Herein, a convenient and efficient method is presented by incorporating plasmonic Ag nanoparticles (NPs) onto a perovskite surface. Owing to the synergistic effect of far-field light scattering and near-field enhancement of Ag NPs, the short-circuit current density of the modified PSC is enhanced by approximately 30%. In addition, the introduction of Ag NPs endows a larger Fermi energy level difference between the TiO2/perovskite interface, resulting in a higher open-circuit voltage. The optimized device with the structure of fluorine-doped tin oxide/compact TiO2/mesoporous TiO2/Cs2AgBiBr6/carbon delivers a PCE of 2.69% as compared to the control device with a PCE of 2.04%, which represents one of the highest efficiencies of hole transport layer-free, carbon-based PSCs. Furthermore, the unencapsulated device retains nearly 98% of its initial PCE even after being stored for 32 days at 25 °C and relative humidity of 40 ± 5%. This work provides a new insight into constructing high-efficient and environment-friendly PSCs.
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Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Liu Jing-Yuan,Chen Ling,Wu Li-Ming
The argyrodite Ag 9 GaSe 6 is a newly recognized high-efficiency thermoelectric material with an ultralow thermal conductivity; however, liquid-like Ag atoms are believed to cause poor stability and performance irreproducibility, which was evidenced even after the 1 st measurement run. Herein, we demonstrate the abovementioned instability and irreproducibility are caused by standard thermoelectric sample hot-pressing procedure, during which high pressure promotes the 3-fold-coordinated Ag atoms migrate to 4-fold-coordinated sites with higher-chemical potentials. Such instability can be eliminated by a simple annealing treatment, driving the metastable Ag atoms back to the original sites with lower-chemical potentials as revealed by the valence band X-ray photoelectron chemical potential spectra and single crystal X-ray diffraction data. Furthermore, the hot-pressed-annealed samples exhibit great stability and TE property repeatability. Such a stability and repeatability has never been reported before. This discovery will give liquid-like materials great application potential.
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ACS Applied Materials & Interfaces
·
2018
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IF 8.097
Qi Xu,Rui Tian,Chao Lu,Haifang Li
Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) in the low-molecular-weight (LMW) range is a long-standing challenge because of the fragments from the matrix and the heterogeneity of the matrix-analyte crystals. In this work, a homogeneous film with the monodispersed Ag nanoparticles (Ag NPs) in the confined interlayer of layered double hydroxides (LDHs) has been achieved. The Ag NPs with advantageous optical absorption could realize the energy capture and transfer process, and LDHs with abundant hydroxyl groups are beneficial for the deprotonated reaction. Therefore, the as-prepared film exhibited interference-free deprotonated signals in negative-ion mode with high ionization efficiency. The uniform matrix-analyte spots were constructed through the homogeneous assembly process, contributing to the high reproducibility for both the liquid and gaseous samples. Good linearities were successfully realized in the range from 0.1 μM to 1.0 mM for glucose with the relative standard deviation (RSD) of 3.8%, and 0.2–2.0 mM with the average RSD of 4.5% for psoralen samples, respectively. It is believed that the proposed matrix could exhibit competitive advantages for MALDI detection in the LMW region, which may provide new insight into development for MALDI mass detection.
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