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 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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ACS Applied Energy Materials
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2025
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IF 5.5
Yuqi Ma,Mingjiao Shao,Hongwei Sheng,Fengfeng Li,Lingxiao Ma,Jiao Yuan,Haoshuo Zhang,Huasheng Bi,Qing Yue,Daicao Wan,Ting Ma,Kairong Wang,Qing Su,Wei Lan
Molybdenum trioxide (MoO3), characterized by its abundant valence states and distinctive layered architecture, has emerged as a highly promising electrode material for potassium-ion (K+) storage. Nevertheless, its practical application in energy storage systems is significantly hindered by intrinsic limitations, including low electrical conductivity and inadequate electrochemical activity. In this study, we successfully synthesized silver-decorated MoO3 (Ag–MoO3) nanobelts through an innovative integration of electrochemical oxidation and hydrothermal techniques, achieving optimized morphology and structural properties. Comprehensive density functional theory (DFT) calculations revealed that the incorporation of Ag not only modified the electronic structure of MoO3 but also significantly enhanced its K+ adsorption capacity, thereby facilitating improved ion and electron transport kinetics. The engineered Ag–MoO3 electrode exhibited remarkable biocompatibility and superior energy-storage performance, demonstrating a specific capacitance of 442 F g–1 at a current density of 0.4 A g–1 in neutral aqueous electrolyte. Furthermore, the assembled asymmetric supercapacitor device achieved an extended operating voltage window of 0–1.8 V, delivering an impressive energy density of 38.4 Wh kg–1 at a power density of 182 W kg–1. These notable characteristics underscore the material’s exceptional potential for efficient K+ storage, positioning it as a promising candidate for next-generation biocompatible and environmentally sustainable electrochemical energy storage systems.
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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
·
2025
·
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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CHEMICAL ENGINEERING JOURNAL
·
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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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Ying Deng,Zhihao Shen,Fengjun Ji,Qidong Hu,Wei Zhai,Jingyu Lu,Wenbo Zhu,Xiaoting Wang,Deping Li,Mingyu Li,Lijie Ci
Sulfide-based all-solid-state batteries (ASSBs) are among the most promising candidates for next-generation energy storage systems due to their high ionic conductivity and intrinsic safety. However, the unstable interface between lithium (Li) metal and sulfide electrolytes induces severe side reactions and dendrite growth, which limits long-term performance. Herein, we propose a scalable room-temperature roll-pressing strategy, which uses an ultrathin silver (Ag) aerogel as a structural interlayer, to fabricate a Li Ag composite anode. The Ag layer facilitates homogeneous lithium-ion (Li + ) flux and suppresses interfacial degradation. Electrochemical testing reveals that the Li-Ag|Li₆PS₅Cl|Li-Ag symmetric cell achieves a doubled critical current density (2.7 vs. 1.3 mA cm −2 ) and prolonged cycling stability (>4000 h at 1.2 mA cm −2 ) compared to the Li|Li₆PS₅Cl|Li symmetric cell. Furthermore, full cells employing Li Ag composite anodes demonstrate enhanced capacity retention and Coulombic efficiency. This work offers new insights into interface engineering for ASSBs and presents a practical route toward safe, high-performance lithium metal batteries.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Songshan Jiang,Lin Xu,Fan Wu,Rui Wen,Meiling Yang,Bai He,Wei Xiong,Huan Yi
The development of stable and efficient MOF-based photocatalysts is essential for the treatment of high-strength dye wastewater. In this study, Ag/Ag 2 O@MOF-808 surface heterojunction photocatalysts were synthesized by a low-temperature impregnation calcination method. Comprehensive structural analyses (XRD, FT-IR, SEM, TEM, BET, H 2 -TPR, XPS) confirmed successful silver loading without damaging the MOF-808 framework. By adjusting the calcination temperature, both Ag 0 and Ag 2 O were introduced to form surface heterojunctions with MOF-808. UV–vis DRS and valence band XPS showed that Ag 2 O reduced the band gap and valence band position, improving light absorption and charge separation. The optimized catalyst (10 wt% Ag, 150 °C) achieved 98.1 % degradation of Rhodamine B (25 mg/L) under UV light within 60 min and maintained 88.8 % efficiency (within 180 min) at 100 mg/L. The catalyst exhibited excellent reusability with 0.417 % Ag + leaching and over 73 % activity retention after four cycles. Radical scavenging experiments identified superoxide radicals as the dominant reactive species. The enhanced performance is attributed to the synergistic effect of Ag 2 O as the active phase, Ag 0 as a conductive bridge, and MOF-808 as a stable support. This work offers a controllable, oxidant-free strategy for efficient photocatalytic degradation of hazardous dyes in wastewater.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Aili Niyazi,Chaoqun Mu,Ting Wang,Wangsheng Ye,Lvling Zhong,Zhixian He,Haoyang Xu,Zhiqiang Zhang,Liang Zhang
In this work, temperature-responsive poly(N-isopropylacrylamide) (PNIPAM) and the guanylthiourea (GLA) were used to modify chitosan (CS) to prepare a novel PNIPAM/GLA/CS adsorbent for Ag(I) ions. Temperature variations near the lower critical solution temperature (LCST) facilitate the adjustment of functional group distribution within the composite material, thereby influencing its adsorption performance for silver ions. The characteristics of this composite material were confirmed using a variety of techniques, including scanning electron microscopy (SEM), variable-temperature ultraviolet-visible near-infrared spectroscopy, Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Studies on the adsorption of Ag(I) ions by the PNIPAM/GLA/CS adsorbent indicated that the optimal pH for adsorption is 6.0. The adsorption kinetics were best described by the pseudo-second order kinetic model, while the equilibrium adsorption data aligned more closely with the Langmuir adsorption isotherm model, achieving a maximum adsorption capacity of 336.33 mg/g at 40°C. Experimental results demonstrated that higher adsorption amounts were observed above the LCST, while desorption of target ions was more favorable below the LCST. This research provides valuable insights for the design of new structural adsorbents.
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Molecular Catalysis
·
2024
·
IF 3.9
Linyu Zhang,Yue Li,Chengyao Liang,Yongli Xiao,YuXin Gong,Jie Deng,Yongdong Chen
The deep oxidation of methanol at relative low temperature is of importance for the exhaust purification of methanol-fueled vehicle. Adjusting the metal-support interaction of catalysts is a promising approach to make the combustion of methanol efficiently. The exposed crystal facets of support strongly affect metal-support interaction as well as catalytic performance. Herein, three types of Ce 0.90 In 0.10 O δ nanomaterial with different morphologies (nanorods, nanoparticles , and nanocubes) and uniform Ag nanoparticles were synthesized, and then they were assembled to form Ag/Ce 0.90 In 0.10 O δ catalysts. The Ag/Ce 0.90 In 0.10 O δ -NR showed the best catalytic performance with a T 90 of 149 °C. To explore the mechanism behind the distinct catalytic performance, the supports and catalysts were characterized by XRD, Raman, H 2 -TPR, and XPS. The characterization results confirmed that Ag/Ce 0.90 In 0.10 O δ -NR exhibited higher oxygen vacancy concentration and more reactive Ag 0 species, which were attributed to that Ce 0.90 In 0.10 O δ -NR mainly exposed (110) crystal faces. Specifically, (110) crystal faces possess of the lowest oxygen vacancy formation energy and boost the charge transfer between Ag nanoparticles and support, which converts the Ag + into reactive species Ag 0 . Finally, the cyclicity and stability of the catalysts were tested. After four cycles and 50 h of continuous testing, the catalytic activity of Ag/Ce 0.90 In 0.10 O δ -NR remained basically unchanged, indicating good stability of the catalyst.
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