Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Teng-Fei Ma,Hong-Xi Ma,Chong-Yang Xing,Hui-Min Fu,Yu Shen,You-Peng Chen,Xiang-Yang Wei
This study combines physiological and proteomic analyses to explore the silver nanoparticles (Ag NPs) induced stress response and resistance mechanisms in the aerobic denitrifying Enterobacter cloacae strain HNR (strain HNR). Results demonstrated concentration-dependent inhibition: at 0.30 mM Ag NPs, bacterial growth (OD 600 ) decreased to 79.7 % of the control, while nitrate removal efficiency dropped to 52.4 %, accompanied by a 6.4-fold increase in nitrite accumulation. Activities of nitrate reductase and nitrite reductase were reduced to 34.3 % and 41.6 %, respectively. Ag NPs also compromised motility, induced oxidative stress (33.11 % rise in intracellular reactive oxygen species), and disrupted membrane integrity (10.4 % lactate dehydrogenase release). Conversely, extracellular polymeric substances (EPS) production surged by 25.6 % under low Ag NPs (0.01 mM), primarily driven by polysaccharide synthesis (55.5 % increase). Proteomics revealed 1987 differentially expressed proteins (978 upregulated, 1009 downregulated). Downregulated pathways (DNA repair, ribosome biosynthesis, glycerophospholipid metabolism, ABC transporters, oxidative phosphorylation, etc.) indicated that Ag NPs disrupted bacterial genome stability, inhibit synthesis of protein, cell membrane, and interfered with material transport and energy production. In response, strain HNR upregulated the sulfur relay system, tyrosine metabolism, and pentose and glucuronate interconversions to combat oxidative stress and energy metabolism inhibition. Additionally, strain HNR increased EPS production and cell surface positive electroactivity by upregulating the starch and sucrose metabolism and the cationic antimicrobial peptide resistance pathways to counteract the adsorption and contact of Ag NPs and silver ion. These findings will guide improvements in aerobic denitrification processes in NP-polluted aquatic environments and facilitate the broader application of aerobic denitrification technologies.
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BMC Oral Health
·
2025
·Vol. 25
·期 1
·1-16
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IF 3.1
Guo Tiantian,Wang Dai,Gao Sherry Shiqian
Background To investigate the antibiofilm effect and mechanism of the silver nanowire (AgNW)-modified glass ionomer cement (GIC) against multi-species oral biofilm, and to examine the mechanical and biochemical properties of this novel GIC material. Methods Conventional GIC was incorporated with different concentrations of AgNW and silver nanoparticles (AgNP). Multi-species biofilms of Streptococcus mutans , Streptococcus sobrinus , Lactobacillus fermentum , and Lactobacillus rhamnosus were cultured for 72 h on GIC specimens. Scanning electron microscopy (SEM) was adopted to examine the accumulation of biofilm on GIC surfaces. A live/dead assay was performed to assess the viability of bacteria. Extracellular polysaccharides (EPS) were labelled with Alexa Fluor 647-labelled dextran conjugate and then observed by a confocal laser scanning microscope (CLSM). The D/L-Lactic Acid Assay Kit was used to evaluate the lactic acid production of the multi-species biofilms. Compressive strength, surface roughness, hardness, and wettability were measured by a universal testing machine, an atomic force microscope (AFM), a Vickers microhardness tester, and a contact angle meter, respectively. Colour stability and fluoride release of GIC specimens were assessed by VITA Easyshade® V and ion chromatography. Cell counting kit-8 (CCK-8) was used to study cytotoxicity. Results SEM images showed that fewer biofilms were accumulated on the AgNW-GIC surfaces. The live/dead assay showed that the ratio of live bacteria was significantly lower in AgNW-GIC groups than in conventional GIC (5.8% vs. 100%, p < 0.0001). The EPS production was significantly less in AgNW-GIC groups compared to conventional GIC ( p < 0.0001). There is no difference between groups regarding lactic acid production and fluoride release. The mechanical strength including compressive strength, surface roughness, hardness, and wettability were comparable between groups. The colour change between AgNW-GIC and conventional GIC was much milder than that between AgNP-GIC and conventional GIC. The results of cytotoxicity showed no significant differences in cell viability between groups. Conclusions This study demonstrated that AgNW-GIC had an excellent antibiofilm effect against multi-species oral biofilm, comparable mechanical and biochemical properties, and did not significantly affect the colour stability of GIC. The antibiofilm mechanism of AgNW-GIC may be related to inhibiting the viability and EPS production of bacteria.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Lefan Li,Tuanzhang Li,Pengfei Zhao,Jingyuan Guo,Chengpeng Li,Zhang Hu,Sidong Li,Chengyong Li
Continuous steam generation is still challenging for existing solar-powered interfacial evaporation systems due to insufficient sunlight exposure in overcast day and time from late afternoon to early morning. Here, we present a novel solar-afterglow driven interfacial evaporation system that leverages the effective absorption and thermal conversion stemming from the afterglow of strontium aluminate (SAO) and photothermal effects of the multi-walled carbon nanotubes/silver/polyacrylamide (MWCNTs/Ag/PAM). In virtue of these synergetic effects, this system demonstrates an evaporation rate of 2.91 kg·m −2 ·h −1 under one sun (1 kW m −2 ) in the daytime and an enhanced evaporation capacity of 5.61 kg·m −2 under SAO-induced afterglow overnight. This innovative strategy significantly broadens the utilizing solar energy and emitted fluorescence for continuous interfacial evaporation in seawater desalination.
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Fishes
·
2025
·Vol. 10
·期 1
·29
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IF 2.4
Yunqiang Guo,Chaoli Zheng,Yingfei Wang,Yongji Dang,Ruiyuan Li,Ye Tao,Yucheng Yang,Xiaofeng Sun,Zekun Song,Pengcheng Sun,Qian Zhang,Dandan Qian,Wenhao Ren,Xiyu Cao,Bowen Wang,Mengxi Xu,Bingyang Jiang,Yujing Li,Qing Sun,Jinye Wang,Lei Zheng,Yanling Sun
Aeromonasspecies are among the main pathogens causing rainbow trout infections. Silver nanoparticles (AgNPs) have a broad spectrum of antimicrobial properties and are usually produced by various green-synthesis methods. However, the application of commercialized AgNPs has not fully been clarified. Thus, the objective of this study was to evaluate the antibacterial activities of commercialized AgNPs (range of sizes 10–12 nm) on two contrastingA.salmonicidastrains (I-1 and I-4), isolated from rainbow trout; the antibacterial mechanism, histopathological alterations and the expression of immune-related genes were investigated. In vitro, the minimal inhibitory concentration (MIC) was 10 µg/mL for I-1, and lowered to 9.5 µg/mL for I-4, respectively. AgNPs were shown to disrupt both the cell wall and membrane of I-1 and I-4, resulting in cell lysis and degradation. In vivo, rainbow trout challenged by immersed or intraperitoneally injected infection, the 10 µg/mL AgNP-treated groups, both showed delayed deaths and lower mortalities compared to the control groups, without any clinical signs and pathological changes. Especially for the virulent I-4, the enhanced expressions of immune-related genes TNF-α, IL-1β, IL-10 and IL-11 were significantly reduced in the AgNP-treated group, indicating a lesser inflammation due to the application of AgNPs. This study would lay theoretical foundation for the wide application of silver nanoparticles in fish diseases.
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Laser & Photonics Reviews
·
2024
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IF 9.8
Jianhua Xiao,Yang Wang,Jiaao Wu,Liu Yuan,Huiling Tai,Yadong Jiang
Tremendous research efforts are developed to suppress the reverse dark current ( J d ) and enhance the responsivity of organic photodiodes (OPDs). The functional layers of traditional OPDs usually follow the principle of energy level alignment to make unobstructed photo-carriers transport under reverse bias, but this inevitably leads to a large forward J d . Herein, a universal strategy is proposed to manipulate the carrier dynamics and effectively suppress the forward J d of OPDs, that is, tuning the energy level and electron traps of the anode interface layers (AILs). The bandgap and electron traps of typical organometallic chelate AIL (PEIE-Co) can be well controlled by adjusting the component ratio of PEIE and metal ions. The wide bandgap increases the carrier injection barrier under reverse and forward bias, endowing OPD with a much lower J d ; the electron traps induce hole tunneling injection by capturing photo-generated electrons under forward bias, thereby enabling the photomultiplication effect. The obtained OPD exhibits photoconductive/photomultiplication working mode at reverse/forward bias and the specific detectivity approaches ≈10 13 /10 12 Jones, showing promise for adaptively detecting faint and strong light. This study presents an intelligent strategy to achieve dual-mode OPDs, paving the way for the multifunctional development of photodetectors.
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STARCH-STARKE
·
2025
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IF 2.7
Qin Chen,Xingyu Chen,Shiqing Song,Lingyun Yao,Huatian Wang,Di Zhao,Min Sun,Qian Liu,Chuang Yu,Tao Feng
High concentrations of pigment powders present significant challenges for dispersion stability in cosmetic formulations, the dispersion of iron oxide yellow paste may lead to flocculation, reducing its stability. This study employed octenyl succinate starch (OSA starch) and Arabic gum (AG) as composite wall materials to encapsulate iron oxide yellow and to optimize the dispersion system for water-soluble pigment powders. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) confirmed the formation of a well-structured microcapsule, significantly smaller than the original iron oxide yellow particles. Accelerated stability tests indicated that the microcapsule structure enhanced system stability, with improved performance observed at higher OAF solution concentrations. The contact angle measurements, which were consistently below 90°, demonstrated that the microcapsule structure enhanced the wettability and hydrophilicity of the OAF solution, thereby improving skin adhesion. The encapsulation of iron oxide yellow using OSA starch and AG underscores the potential application of natural hydrocolloids and modified starches in the cosmetics industry.
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Bioactive Materials
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2025
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IF 20.3
Long Lin,Xiaojing Yuan,Lili Ma,Liang Xu,Wenyue Xie,Ying Jiang,Jidong Xiu,Hongwei Xu,Zhuoling Tian,Jianan Qu,Chunhui Zhao,Zuoying Yuan,Huilin Liu,Jianyong Huang,Xing Wang
Local electrical stimulation (LES) is a widely used clinical method to treat peripheral nerve injury. However, existing plate electrodes (PE) usually suffer from low electronic transport efficiency, whereas acupuncture electrical stimulation may cause damage to normal tissues. There is an urgent need to develop an innovative LES technique with efficient electronic transport, minimal tissue injury and enhanced biosafety. Here, we present a new stretchable transcutaneous electrical stimulation system (STESS) that integrates dissolvable conductive microneedles (DCMN) for optimal skin penetration and electronic transport, along with snake-like electrodes that offer superior flexibility, which can effectively penetrate the stratum corneum, enabling deep tissue electrostimulation with minimal injury. In vitro studies and 3D finite-element analysis demonstrate that the DCMN-based electrotherapy significantly enhances subcutaneous nerve stimulation compared to the conventional PE-based technique. By diminishing the electrical resistance of the stratum corneum, the DCMN-based electrotherapy has shown remarkable in vivo therapeutic efficacy in a rat facial nerve crush injury model. This will pave the way for innovative physiotherapeutic methodologies in the realm of neurological rehabilitation.
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ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Weixuan Wang,Qingzhou Li,Mengyue Gao,Kun Wang,Xilu Wu,Zhiyuan Bai,Yongsheng Liu,Qihang Yan,Yuxi He,Ze Xiong,Aiyan Shi,Guojian Yang,Zhipeng Li,Chengyi Hou,Qinghong Zhang,Yaogang Li,Yanhua Cheng,Kerui Li,Hongzhi Wang
High-efficiency solar-thermal conversion has received widespread attention in seawater desalination, purification, catalysis, and power generation. However, challenges still exist in the exploitation of the solar-thermal converters capable of thermal concentration to simultaneously suppress serious heat loss from conduction, convection, and radiation, which always leads to photothermal temperature <70 °C under 1-sun illumination. Herein, a solar-thermal converter integrated with trimode thermal concentration capabilities is prepared by in situ deposition of three stacked function layers (crumpled light-absorbing microtexture, transparent insulating silica aerogel, and transparent low-emission micronetwork) to simultaneously guarantee solar energy transmission/conversion and prevent conduction, convection, and radiation loss. As a result, the trimode integrated solar-thermal converter shows equilibrium temperatures as high as 90.9 °C under 1-sun illumination and 174 °C under 3-sun illumination, which is higher than most previously reported converters. Finally, a sustainable active building model is built with a power-generation roof to efficiently utilize solar-thermal energy. The solar-thermal converters synchronously drive constant thermoelectric generation (4.6 V, Pmax = 0.85 W m–2) and water heating (from 15.9 to 31.3 °C). The generated voltage powers smart electrochromic windows with the transmission modulation of natural light and its heat gain, significantly increasing indoor living comfort and saving energy in buildings by reducing lighting, heating, ventilation, and cooling loads.
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Journal of Physical Chemistry C
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2024
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IF 3.3
Jitao Shang,Shasha Wei,Yuan Ai,Yayun Zheng,Baoshuo Yang,Du Wang,Yan Zhao
Silver nanowires (Ag NWs) possess remarkable attributes, such as high surface area, excellent conductivity, optical properties, and strong anisotropy, rendering them highly promising for diverse applications in flexible electronics, transparent electrodes, and other fields. However, a comprehensive understanding of their thermodynamic behavior remains elusive. Given the temperature sensitivity of Ag NWs, it becomes imperative to unravel their degradation mechanisms, ensuring their reliability in practical usage. In this study, we conducted an extensive analysis of well-defined polycrystalline Ag NWs, employing in situ TEM to investigate their thermal transitions. Our research revealed that the different forms of energy transfer and interfacial stability resulted in different degrees of transformation of Ag NWs under different thermal conditions. We recorded these transformations in complete and detailed videos. These outcomes provide a solid foundation for attaining a comprehensive understanding of the thermal properties of Ag NWs, propelling their utilization in scientific research and industrial applications.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
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IF 15.7
Wang Xinzhong,Su Yiwen,Chen Jiashu,Yan Edward Hengzhou,Xia Qing,Wu Jie,Gong Shanhe,Tang Mingcong,Yip Wai Sze,Mu Yongbiao,Yi Yuyang,Wu Jinjin,Xu Fujing,Yang Xianzhong,Zhang Xiao,Dou Shixue,Sun Jingyu,Zheng Guangping
Current electrosynthesis catalysts typically rely on nanomaterial-based engineering with multi-dimensional structural modifications. However, such approaches may not always be necessary, especially for underexplored industrial electrochemical conversions. Here, we demonstrate that commercial platinum (Pt) foil catalysts excel in the electrochemical co-oxidation of waste polyethylene terephthalate (PET)-derived ethylene glycol (EG) and ammonia (NH 3 ) into formamide (HCONH 2 ), a process traditionally reliant on energy-intensive methods. This approach achieves a high Faradaic efficiency (FE) of 55.87 ± 1.4% and a productivity of 1003.63 ± 23.72 µmol cm −2 h −1 at industrially relevant current densities without any degradation for durable operation (more than 500 h and 300 h for H-cell and membrane electrode assembly (MEA) reactor, respectively). In situ spectroscopy, supported by theoretical calculations, suggests that *CH 2 O and *NH 2 are likely key intermediates. Furthermore, the product sustainability index (ProdSI) and techno-economic analysis (TEA) underscore the cost-effectiveness and sustainability of noble Pt foil in this scenario, challenging the conventional reliance on complex electrocatalysts. This work provides distinctive insights into catalyst screening and demonstrates a viable strategy for upcycling waste plastics.
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Advanced Energy Materials
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2025
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IF 26
Xinrui He,Hailong Sun,Peifeng Yu,Hezhang Li,Zezhan Zhang,Yi Niu,Jing Jiang,Chao Wang
Thermoelectric devices have garnered significant interest but face limitations due to their reliance on external equipment and relatively low energy density for energy storage. This study introduces an innovative integrated device that achieves both the function of thermoelectric conversion and energy storage within a single unit through a precipitation-driven Thermogalvanic effect. Strikingly, both the thermoelectric (P max = 3.51 W m −2 ) and electrochemical (E = 459 J m −2 , surpasses the reported highest value by 132%) performances are excellent. Furthermore, a large-area prototype module comprising 32 units manifests an open circuit voltage of 1.7 V and exhibits an energy density of 463.9 J m −2 . This work provides an innovative and effective approach to the high-performance recycling system of thermoelectric conversion and energy storage integrated devices.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
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IF 15.7
Li Jieyang,Zhang Huanlei,Luo Changhao,Cheng Dongbo,Xu Wanping,Lin Meng
Electrochemical conversion of CO 2 into fuels represents an important pathway for addressing the challenges of climate change and energy storage. However, large-scale applications remain hindered by the instability and inefficiency of CO 2 reduction systems, particularly under highly alkaline electrolytes and high current densities. One primary obstacle is the cathodic salt precipitation, which hinders mass transfer and blocks active sites limiting the lifespan of these systems. Here, we present a non-isothermal strategy that leverages a thermal gradient across the membrane electrode assembly to enhance electrochemical performance and suppress salt precipitation. By maintaining a cooler cathode and warmer anode, we exploit the Soret effect to drive cations away from the cathode, mitigating salting-out while boosting anodic activity and cathodic CO 2 solubility. The non-isothermal case has demonstrated over 200 h of stable operation at 100 mA cm −2 under highly alkaline conditions, outperforming conventional isothermal systems. Techno-economic analysis reveals reductions in CO 2 -to-CO production costs, supporting the scalability of this strategy. These findings enable the practical deployment of stable, high-efficiency CO 2 electrolysis systems.
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