材料科学最新文献

{"title":"Role of 5-HT in the enteric nervous system and enteroendocrine cells.","authors":"Nick J Spencer, Damien J Keating","doi":"10.1111/bph.15930","DOIUrl":"10.1111/bph.15930","url":null,"abstract":"<p><p>Since the 1950s, considerable circumstantial evidence had been presented that endogenous 5-HT (serotonin) synthesized from within the wall of the gastrointestinal (GI) tract played an important role in GI motility and transit. However, identifying the precise functional role of gut-derived 5-HT has been difficult to ascertain, for a number of reasons. Over the past decade, as recording techniques have advanced significantly and access to new genetically modified animals improved, there have been major new insights and major changes in our understanding of the functional role of endogenous 5-HT in the GI tract. Data from many different laboratories have shown that major patterns of GI motility and transit still occur with minor or no, change when all endogenous 5-HT is pharmacologically or genetically ablated from the gut. Furthermore, antagonists of 5-HT₃ receptors are equally, or more potent at inhibiting GI motility in segments of intestine that are completely depleted of endogenous 5-HT. Here, the most recent findings are discussed with regard to the functional role of endogenous 5-HT in enterochromaffin cells and enteric neurons in gut motility and more broadly in some major homeostatic pathways.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":" ","pages":"471-483"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40525099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning the band gap in InSb (100) by surface chemical doping","authors":"Jingwei Dong, Yi Lian, Yongguang Zhang, Luca Perfetti, Zhongwei Chen","doi":"10.1016/j.apsusc.2025.162564","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.162564","url":null,"abstract":"Surface chemical doping is known to induce an interface dipole electric field, which has recently attracted considerable attention for its capacity to modulate the electronic and optical properties of semiconducting materials. InSb is considered one of the most promising semiconducting crystals due to its exceptional electron and hole mobility, surpassing that of other common III-V semiconductors. Here, we demonstrated the tuning of band gap renormalization in InSb (100) through <em>in situ</em> surface potassium atom doping, directly observed using time- and angle-resolved photoelectron spectroscopy. In addition, density functional theory calculations were performed to analyze the band gap evolution in InSb under the electric field perpendicular to the (100) crystal plane. Our study not only provides a clear observation of the band gap renormalization of InSb but also highlights its potential to enhance practical applications in contemporary photoelectric devices based on InSb.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"206 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143049737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemical Redox Agent-Driven Noncorrosive Formation of Nanoporous Mg Structures for Advanced Hydrogen Storage","authors":"YongJun Cho, Andrew J. E. Rowberg, Sourav Chatterjee, Aqil Jamal, ShinYoung Kang, Tae Wook Heo, Brandon C. Wood, Eun Seon Cho","doi":"10.1021/acsnano.4c15809","DOIUrl":"https://doi.org/10.1021/acsnano.4c15809","url":null,"abstract":"Light metal-based nanomaterials are widely used for energy storage due to their high energy density and surface-to-volume ratio. However, their high reactivity is paradoxically both the source of advantageous properties and a hurdle to the fabrication of stable nanostructures. Here, we demonstrate the formation of nanoporous Mg via chemical redox agent-driven dealloying, which ensures minimized surface passivation and results in fine nanostructures with &lt;50 nm of interconnected metallic ligament despite the labile chemical properties of Mg. The thin passivation layer protects the metallic ligaments from severe coarsening by suppressing surface diffusion. The hydrogen storage performance of nanoporous Mg is investigated as an exemplar for energy applications, and the hydrogen ab/desorption kinetics is substantially enhanced compared to other nano-Mg with similar dimensions. Mesoscale simulations highlight the significance of the bicontinuous structure compared to the particle-like counterpart. This work offers valuable insights into the unexplored realm of reactive metal-based nanoporous structures, highlighting their potential for sustainable energy storage and carrier media.","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":"36 1","pages":""},"PeriodicalIF":17.1,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Zr addition on microstructure, mechanical and tribological properties of Cu-Ni-Sn alloy fabricated by spark plasma sintering","authors":"Songlin Lu, Sanming Du, Zhen Li, Xiaoxiong Liu, Xiaochao Wang, Zipeng Ding","doi":"10.1016/j.jallcom.2025.178887","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178887","url":null,"abstract":"Synergistic improvement between the mechanical properties and wear resistance of Cu-Ni-Sn alloys is critical for extending the service life of materials in practical applications. In this study, Cu-12.5Ni-5Sn-xZr alloys (x=0, 0.5, 1.0, and 1.5<!-- --> <!-- -->wt.%) were prepared by spark plasma sintering (SPS). Subsequently, the effects of Zr addition on the microstructure, mechanical, and high temperature tribological properties were systematically investigated. We found that Zr addition significantly refined the alloy grains and allowed the γ-phase to more easily precipitate with needle-like or particulate-like shapes. When 1.0<!-- --> <!-- -->wt.% Zr was added, the formation of nano-scale Ni₄SnZr phase inhibited discontinuous precipitation (DP) nucleation and reduced the growth rate. Meanwhile, the hardness and yield strength reached aging peaks of 326.8 HB and 669.5<!-- --> <!-- -->MPa, respectively, which were approximately 30% and 43% higher than without Zr. This improvement was mainly attributed to grain refinement, nano-precipitation strengthening and the inhibition of DP. Furthermore, the addition of 1.0<!-- --> <!-- -->wt.% Zr could improve the tribological properties of the matrix alloy, especially the wear rate reached an order of magnitude of 9.28×10^-6 mm³/N·m at room temperature. From room temperature to 500 °C, the decrease in friction coefficient of the alloys was mainly due to the formation of metal oxides, whereas the increase in wear rate was mainly the decrease in mechanical properties and severe oxidation at high temperature.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"29 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tunnel-Structure MnO2 nanospheres as high-capacity and reversible cathode materials for rechargeable aqueous zinc-ion batteries","authors":"Tao He, Li Xiao, Jing Li, Yirong Zhu","doi":"10.1016/j.jallcom.2025.178890","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.178890","url":null,"abstract":"Manganese-based materials are widely employed as electrode materials for batteries, with particular attention being paid to MnO₂ owing to its notable merits of high theoretical capacity, low toxicity, and elevated output voltage. Nevertheless, the practical application of MnO₂ is impeded by its inadequate rate capability and swift capacity decline. The MnO₂ nanospheres with a tunnel structure (α-MnO₂ NSs) were synthesized through a simple one-step co-precipitation method. Reaping the benefits of its tunnel-like structure and nanoscale dimensions, the α-MnO₂ NSs exhibited a remarkable specific capacity of 462 mAh g^-1 at 0.1<!-- --> <!-- -->A<!-- --> <!-- -->g^-1, excellent rate capability of 160 mAh g^-1 at 1.0<!-- --> <!-- -->A<!-- --> <!-- -->g^-1, impressive reversible capacity retention (0.1<!-- --> <!-- -->A<!-- --> <!-- -->g^-1(re)/0.1<!-- --> <!-- -->A<!-- --> <!-- -->g^-1=112.8%), and good cycle performance with a capacity retention rate of 75.7% after 500 cycles at 1.0<!-- --> <!-- -->A<!-- --> <!-- -->g^-1. The energy storage mechanism was investigated through electrochemical kinetic analysis and ex-situ testing. Initial inserting involved H⁺ incorporation into α-MnO₂ NSs electrode, leading to increased OH^- near the surface and Zn₄SO₄(OH)₆·5H₂O formation. Decreasing H⁺ concentration led to Zn²⁺ insertion and a second discharge platform. The electrochemical kinetics of the α-MnO₂ NSs are influenced by both diffusion and capacitance mechanisms. The superior diffusion coefficient average guarantees improved rate performance and cyclic stability even under high current densities., highlighting the importance of nanostructure in promoting ion diffusion. Therefore, α-MnO₂ NSs exhibit promising potential as both safe and efficient cathode materials for energy storage batteries.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"59 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting electrocatalytic nitrate reduction to ammonia with a Cu/Ag-Ru tandem catalyst at industrial-scale current density","authors":"Ru Jia, Xiaoxue Zhang, Li Gan, Muhammad Tahir, Zhen-Feng Huang, Lun Pan, Ruijie Gao, Chengxiang Shi, Xiangwen Zhang, Guidong Yang, Ji-Jun Zou","doi":"10.1039/d4ta08066a","DOIUrl":"https://doi.org/10.1039/d4ta08066a","url":null,"abstract":"The nitrate reduction reaction (NO<small>₃</small>RR) represents a promising route for water treatment and NH<small>₃</small> generation. This process involves the deoxygenation of NO<small>₃</small><small>⁻</small> to form nitrite (NO<small>₂</small><small>⁻</small>), followed by its subsequent hydrogenation. However, discrepancies in the rates of these two steps result in a decrease in faradaic efficiency (FE) and NH<small>₃</small> yield rate. Herein, we demonstrated a tandem catalyst of (Cu<small>₇</small>/Ag<small>₃</small>)<small>₇</small>-Ru<small>₃</small>/C achieving a high NH<small>₃</small> yield rate of 3.45 mmol h<small>⁻¹</small> cm<small>⁻²</small> (2.30 mol g<small>_cat</small><small>⁻¹</small> h<small>⁻¹</small>) and a FE of 93.48% at −0.9 V <em>vs.</em> the reversible hydrogen electrode. The Cu/Ag heterostructure greatly enhanced the conversion of NO<small>₃</small><small>⁻</small> to NO<small>₂</small><small>⁻</small> over a wide potential window due to the synergistic effect, while Ru, selectively adsorbing NO<small>₂</small><small>⁻</small>, provided active hydrogen derived from water hydrolysis to facilitate NH<small>₃</small> synthesis. Furthermore, (Cu<small>₇</small>/Ag<small>₃</small>)<small>₇</small>-Ru<small>₃</small>/C exhibited stable performance in a membrane electrode assembly over 60 hours, achieving an average NH<small>₃</small> yield rate of 6.90 mmol h<small>⁻¹</small>. The ammonium chloride solid product was successfully obtained using an air stripping methodology. <em>In situ</em> characterization revealed that the surface microenvironment of Ru influenced the adsorption configuration of *NO and on-top adsorbed NO was more favorable for ammonia synthesis compared to bridge-adsorbed NO. The overall reaction pathway involved stepwise deoxygenation to form *N and subsequent gradual hydrogenation.","PeriodicalId":82,"journal":{"name":"Journal of Materials Chemistry A","volume":"50 1","pages":""},"PeriodicalIF":11.9,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polymer-Layered Optical Wearable (PLOW) for Healthcare Applications: Temperature and Stretching Monitoring","authors":"Pratik Mishra, Devendra Nath Goswami, Santosh Kumar, Rajan Jha","doi":"10.1021/acsami.4c21034","DOIUrl":"https://doi.org/10.1021/acsami.4c21034","url":null,"abstract":"Thermal and stretching characteristics are crucial variables in healthcare, robotics, and human-machine interaction applications. Here, we present a single-mode fiber-based, balloon-shaped, single- and dual polymer-layered optical wearable (PLOW) system that can sense both temperature and stretching. These two types of PLOWs are compared in terms of their detection performance across all criteria. Dual polymer-based systems have a substantial temperature sensitivity of −1.39 nm/°C, while single polymer ones show a sensitivity of −0.18 nm/°C. The increased sensitivity is attributed to the higher thermo-optic coefficient of the bipolymer (polymer jacket and PDMS) encasing. In terms of stretching sensing, single PLOWs beat dual ones for both longitudinal and lateral stretching due to the large change in shape variable at the same extrusion pressure in single PLOWs. The fast temporal response, high-temperature tolerance, long-term stability, and stretching sensitivity of both PLOWs make them ideal for real-time monitoring of skin temperature, wrist pulse, voice recognition, and different mechanical stimuli. These measures are critical for correctly assessing invasive human health parameters. We believe that these technologies will hold tremendous promise in wearable optical systems, with applications ranging from healthcare to humanoid robotics.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"12 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploiting thiolate/disulfide redox couples toward large-scale electrochemical carbon dioxide capture and release","authors":"Xiaoxin Li, Chao Deng, Rong Chen, Xu Li, Furong Xie, Zinan Wu, Yu Xie, Song Wang, Guo-Ming Weng","doi":"10.1039/d4ee04739g","DOIUrl":"https://doi.org/10.1039/d4ee04739g","url":null,"abstract":"Reducing global carbon dioxide (CO2) emissions is a critical issue that requires sustainable, energy-efficient and scalable solutions. Electrochemical carbon dioxide capture and release with redox active molecule has drawn an intense amount of interest, owing to its mild operation condition, low energy consumption and high flexibility compared with traditional CO2 capture technologies. Here, we demonstrate a series of thiolate/disulfide redox couples, with high practical solubility and weak protonation ability, which are able to reversibly capture and release CO2. The mechanism of CO2 capture and release using such redox couples is elucidated via combining density function theory (DFT) calculations, cyclic voltammetry and Fourier transform infrared spectroscopy measurements (FTIR). Further, we show the redox performance of such materials can be significantly improved by functional group tuning and electrolyte engineering. Among them, the 4-fluorophenyl thiolate/4-fluorophenyl disulfide redox couple shows an initial CO2 capacity utilization efficiency and average release/capture efficiency of ~100% and ~90%, respectively, under simulated flue gas (20% CO2) in a flow system. Besides, it exhibits a good cycling stability against moisture. This work opens new opportunity to future works in developing thiolate/disulfide redox couples for large-scale electrochemical carbon dioxide capture and release applications.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"118 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Multifunctional Surface Modifier Capable of Stabilizing 5.0 V Graphite Cathode via Reinforced Mechanical Strength and Preferential Anion Adsorption","authors":"Yuqing Li, Weixing Xiong, Qunting Qu, Jie Shao, Longfei Wang, Ru Wang, Ying Yan, Honghe Zheng","doi":"10.1002/adfm.202500071","DOIUrl":"https://doi.org/10.1002/adfm.202500071","url":null,"abstract":"With the ever-increasing demand for high power and high energy batteries, extensive researches devote to high voltage cathode materials. Graphite cathode-based dual-ion batteries (DIBs) possess the unique advantages of high working voltage (≈4.5−5.0) and high power, but still suffer from low coulombic efficiency and poor long-term stability mainly resulted by the serious oxidative decomposition of electrolytes and significant structural deterioration of graphite cathode. From the perspectives of simultaneously reinforcing the mechanical strength of graphite cathode and suppressing the decomposition of electrolytes via a cathode/electrolyte interphase (CEI), polyacrylic acid (PAA) is adopted as the surface modifier of natural graphite (NG). The mechanical stability of graphite cathode is significantly improved by virtue of the bonding interaction between PAA and binder, which is validated through both theoretical calculation and experimental observation. In addition, PAA contributes to the formation of a LiF-rich and homogeneous CEI through the preferential adsorption of anions, and effectively mitigates the cointercalation and decomposition of solvent. As the cathode material of DIBs, NG@PAA manifests fast charge/discharge capability and outstanding capacity retention of 73.9% after 8000 cycles. This work provides a surface modification strategy for optimizing the performance of electrode materials from multiple perspectives.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"19 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elucidating Mesostructural Effects on Thermal Conductivity for Enhanced Insulation Applications","authors":"Tingting Ren, Zhenxiang Chen, Jiahao Chen, Xirui Huang, Xingjin Li, Jie Zhang, Qianqian Lu, Chin-Te Hung, Tiancong Zhao, Min Wang, Dongyuan Zhao","doi":"10.1002/smll.202410872","DOIUrl":"https://doi.org/10.1002/smll.202410872","url":null,"abstract":"Thermal management is a key link in improving energy utilization and preparing insulation materials with excellent performance is the core technological issue. Complex and irregular pore structures of insulation materials hinder the exploration of structure-property relationships and the further promotion of material performance. Ordered mesoporous silica (OMS) is a kind of porous material with ordered frameworks. This work elucidates the effects of ordered porous architecture on the thermal conductivity of mesoporous silica. Herein, two typical OMS, SBA-15 and SBA-16, characterized by well-defined porous structures with distinct spatial orientations are synthesized to study the relevance between structure and thermal conductivity. Compared to the 3D cubic mesoporous structure of SBA-16, the 2D hexagonal structure of SBA-15 exhibits anisotropic effects that restrict both solid and gaseous conduction, thereby providing better thermal insulating. Due to the influence of porosity, the thermal conductivity is found to decrease strongly with increasing pore size and decreasing wall thickness. Moreover, OMS composite aerogels with outstanding thermal insulation, mechanical performance, and hydrophobicity are fabricated through incorporating OMS into cellulose nanofibers (CNF). Consequently, this work contributes to a deeper understanding of heat transfer in OMS and provides an idea for designing OMS-based composite materials, thereby advancing their potential applications.","PeriodicalId":228,"journal":{"name":"Small","volume":"24 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}