Surfaces and Interfaces最新文献

{"title":"Application of drag-reducing polymers in forest firefighting: Effects on wood properties and mechanism study","authors":"","doi":"10.1016/j.surfin.2024.105082","DOIUrl":"10.1016/j.surfin.2024.105082","url":null,"abstract":"<div><p>Based on the successful utilization of polymer additives in drag reduction for long-distance transportation and the intricacies of their application in firefighting contexts, this study investigated the impact of additives on wood properties in forest fire suppression through a combination of experiments and molecular dynamics simulations, focusing on wettability, fluidity, and combustibility. Optimal concentrations of polymer solutions were determined through contact angle measurements and surface flow experiments. The effects of polymers on wood water retention, thermal stability, and microstructure were analyzed using thermogravimetric analysis, infrared spectroscopy, and wood impregnation experiments. Wetting and flow models of polymers on cellulose surfaces were simulated to elucidate the wetting mechanism and dynamic behavior of polymers during flow. The results revealed that polyacrylamide (PAM) and polyethylene oxide (PEO) promoted wood surface wetting, improved flowability, enhanced water retention, and delayed decomposition at optimal concentrations. PAM exhibited superior effects in flow stability, thermal stability, and liquid absorption enhancement, attributed to strong hydrogen bonding between PAM and surfaces, primarily through amide groups. During flow, PAM molecules gradually aggregated and moved as aggregates along the X-axis. In contrast, the PEO system relied on electrostatic forces between water and surfaces, with dynamic processes involving repeated stretching and shrinking of PEO molecular chains to facilitate water flow and enhance wetting. This research contributes to delineating the application conditions and benefits of polymer on wood surfaces, enhancing the efficacy and potential of drag-reducing agents in firefighting applications.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162038","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":"Nanoarchitectonics of MIL-101(Fe)/g-C3N4 S-Scheme heterojunction for photocatalytic nitrogen fixation: Mechanisms and performance","authors":"","doi":"10.1016/j.surfin.2024.105083","DOIUrl":"10.1016/j.surfin.2024.105083","url":null,"abstract":"<div><p>Recently, there has been a growing interest in the fundamental understanding of the mechanism of how MIL-101(Fe)/g-C₃N₄ heterojunctions facilitate the occurrence of photocatalytic nitrogen fixation reactions, especially the electron transfer mechanism has attained increasing attention in photocatalysis. Herein, we implemented a \"triple win scenario\" strategy to fabricate the S-scheme MIL-101(Fe)/g-C₃N₄ heterojunction through a straightforward solvothermal process. The MC-6 heterojunction minimizes the recombination of photogenerated carriers, enhances light utilization efficiency, and activates the N≡N bond, thus boosting photocatalytic nitrogen fixation efficiency. The transition metal iron activates the N≡N bond, while S-scheme heterojunctions reduce the photogenerated carrier recombination. In addition, the decrease in band gap (E_g) leads to an increase in visible light utilization efficiency. ISIXPS proved the mechanism of interelectron transfer of MIL-101(Fe)/g-C₃N₄ heterojunction under illumination. Upon the creation of the heterojunction, electrons migrate from g-C₃N₄ to MIL-101(Fe), establishing an inherent electric field due to the disparate Fermi levels between the two materials. The electrons (e^-) on the g-C₃N₄ CB with a more negative reduction potential and the holes (<em>h</em>⁺) on the MIL-101(Fe) VB are retained, which increased the redox capacity to a great extent required for the reduction of N₂ to NH₃. The ammonia production efficiency of MC-6 photocatalyst was 160 µmol g_cat^-1 h^-1, representing an 8-fold and 2.8-fold improvement over pristine g-C₃N₄ (20 µmol g_cat^-1 h^-1) and MIL-101(Fe) (57 µmol g_cat^-1 h^-1), respectively.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173002","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":"Effect of cap layer and post growth on-site hydride passivation on the surface and interface quality of InAsP/InP hetero and QW structures","authors":"","doi":"10.1016/j.surfin.2024.105087","DOIUrl":"10.1016/j.surfin.2024.105087","url":null,"abstract":"<div><p>The performance of devices made from III-V compound semiconductors relies heavily on their surface and interface properties. The InAsP/InP material system is recently gaining interest due to its suitability for the next generation of long-haul classical and quantum communication applications. Researchers are studying how surface and interface properties affect the efficiency of the device and concludes that the epitaxial growth conditions responsible for creating surface and interface states require further improvement. To address this, we have studied the effect of the top (cap) layer and post-growth on-site hydride passivation on the properties of InAsP/InP hetero-structures grown using metal-organic vapor phase epitaxy technique. The flow rate and flux ratios of the hydrides significantly affect the surface reaction rates and gas-phase diffusion coefficients, which in turn impact the As↔P exchange mechanisms. Our findings suggest that post-growth on-site arsine passivation encourages the As↔P substitutions at the vicinity of the desorption sites of phosphorus, leading to the arsenic-rich surface of InAsP with the diffused hetero-interfaces. The activation energy for such As↔P exchange reaction mechanism is evaluated as ∼ (1.4 ± 0.3) eV. On the other hand, it has been observed that the thin cap layer of InP protects the surface of the InAsP epilayer and thereby preserving the sharp interface. Further, surface photovoltage and photoluminescence spectroscopy is employed to examine the role of the diffused and sharp interface of InAsP/InP hetero-structures in charge carrier transport, their redistribution and recombination process. Our analysis of the energy transitions occurring in the surface photovoltage and photoluminescence spectrum reveal that the energy band alignment and the subsequent charge carrier redistribution processes is influenced by the surface and interface states. These changes in the surface photovoltage phase spectra of InAsP/InP system also support the role of surface and interface states in the generation and separation of the charge carriers. The study provides insights into the effects of As↔P exchange on surface and interfacial quality, highlighting the implications for optoelectronic device development using InAsP/InP material system.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142230076","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":"A facile preparation of durable superhydrophobic PFA coatings with superior anti-icing, anti-corrosion and self-cleaning performance","authors":"","doi":"10.1016/j.surfin.2024.105085","DOIUrl":"10.1016/j.surfin.2024.105085","url":null,"abstract":"<div><p>The potential of superhydrophobic coatings for various applications has been widely recognized. However, preparing durable superhydrophobic coatings on metal surfaces remains a significant challenge. Perfluoroalkoxy Alkane (PFA), a fluorine-rich material, has recently emerged as a promising candidate for constructing superhydrophobic coatings. In this study, a mechanically stable superhydrophobic PFA coating was prepared using a simple combination of electrodeposition and annealing. The prepared PFA coating displays excellent water repellency, as evidenced by a water contact angle of 171 ± 0.3° and a sliding angle of 1.0 ± 0.4° The water contact angle of the coating only decreases by 0.6°after undergoing 400 tape stripping tests, indicating the remarkable stability. The PFA coating significantly prolongs the freezing time of water droplets on a cool surface at temperatures of -6 °C, -8 °C, and -10 °C, with improvements of 19.4, 72.5, and 47.8 times respectively. The corrosion current density on the coated surface is reduced by four orders of magnitude compared to bare aluminum alloy, and the PFA coating exhibits a high inhibition corrosion efficiency of 99.995 %. Furthermore, the coating possesses exceptional self-cleaning performance by repelling dirt particles and maintaining a clean surface. Consequently, the developed superhydrophobic PFA coating holds significant promise for long-lasting anti-icing, anti-corrosion and self-cleaning applications.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142167473","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":"An environmentally friendly coating: Excellent self-cleaning, efficient antimicrobial, and durability properties","authors":"","doi":"10.1016/j.surfin.2024.105053","DOIUrl":"10.1016/j.surfin.2024.105053","url":null,"abstract":"<div><p>The development of non-polluting and non-toxic polymer antimicrobial agents is a prominent focus in contemporary research and development. Polymer quaternary ammonium salts are particularly promising for their antimicrobial efficacy. In this study, we synthesized quaternary imidazole derivatives using butylimidazole and 3-chloropropyltriethoxysilane. We then prepared PDMS/BIS/PPS hydrophobic antimicrobial composite coatings by incorporating quaternary ammonium salt chemically grafted silica (BIS), polyphenylene sulfide (PPS), and polydimethylsiloxane (PDMS). The resulting composite coating displayed a high contact angle of 136.4°±1° and a low sliding angle of less than 5°±1°, indicating its hydrophobic nature. Electrochemical assessments demonstrated exceptional corrosion resistance, with a corrosion inhibition rate of 99.967 %. Bacterial assays confirmed the coating's effectiveness in inhibiting bacterial proliferation, especially against E. coli. The quaternary ammonium-modified silica particles in the coating facilitate bacterial adsorption through electrostatic interactions, which compromise cell membrane permeability, obstruct nutrient uptake, and induce apoptosis. With its anti-fouling, self-cleaning, and anti-corrosion properties, this coating has substantial potential for applications in various fields, including medical devices, and food packaging.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142167523","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":"Construction of a Z-scheme heterojunction based on two-dimensional Janus materials XWSiN2 (X=S; Se; Te) for effective photocatalytic water splitting by DFT","authors":"","doi":"10.1016/j.surfin.2024.105079","DOIUrl":"10.1016/j.surfin.2024.105079","url":null,"abstract":"<div><p>Photocatalysts play an important role in solving energy problems, and Z-scheme heterojunctions have garnered significant interest due to their ability to efficiently separate photogenerated carriers and improve redox capacity. In this work, we construct a Z-scheme heterojunction by substituting Se and Te for S atoms in the SWSiN₂ bilayer. The findings demonstrate that they have high kinetic stability, and the construction of heterojunctions can narrow the bandgap, effectively improving light absorption. The existence of the built-in electric field can be explained by studying the charge density difference, which breaks through the band gap limitation in water photocatalytic splitting. Their photocatalytic characteristics with and without strain are described in depth, with the spectroscopic limited maximum efficiency (SLME) of TeWSiN₂/SWSiN₂ surpassing 30 % under no strain. With tensile strain, SeWSiN₂/SWSiN₂ energy bands rise, but TeWSiN₂/SWSiN₂ energy bands decrease. Meanwhile, the band edge arrangement of XWSiN₂/SWSiN₂ (X=Se; Te) becomes smaller with increasing strain. The spectral finite maximum efficiency of SeWSiN₂/SWSiN₂ increases from 12 % to 27 % and shows good light absorption (<em>η</em>_STH = 10.60 % for SeWSiN₂/SWSiN₂, <em>η</em>_STH = 14.17 % for TeWSiN₂/SWSiN₂) and carrier utilization.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162039","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":"Enhanced antimicrobial activity of Cu-decorated graphene nanoplatelets and carbon nanotubes","authors":"","doi":"10.1016/j.surfin.2024.105074","DOIUrl":"10.1016/j.surfin.2024.105074","url":null,"abstract":"<div><p>New materials with antimicrobial properties are necessary to combat the proliferation and transmission of pathogenic microorganisms. In this work, graphene nanoplatelets (GPN) and multi-walled carbon nanotubes (CNT) decorated with Cu nanoparticles (Cu NPs) were synthetized by microwave-assisted hydrothermal method, varying the Cu content from 1 to 10 wt.%. These materials were characterized by X-ray diffraction (XRD), Raman spectroscopy, and scanning and transmission electron microscopy (SEM and TEM) and their antimicrobial activity against Gram-positive <em>Staphylococcus aureus</em> (<em>S. aureus</em>) and Gram-negative <em>Escherichia coli</em> (<em>E. coli</em>) were evaluated. The sample with 10 wt.% Cu at CNTs is more effective compared to GPNs. Then, brass coatings with pure and Cu-decorated (10 wt.%) CNTs and GPNs were prepared by spin coating to evaluate the antimicrobial activity of these surfaces. It was observed that coatings with the carbon matrices reduced microbial growth by 2 logs, whereas decoration with Cu NPs amplified this value, especially for the Cu/CNT coating, achieving up to a 6-log reduction after 24 h of contact. The stability of the antimicrobial activity of these coatings was evaluated over 5 successive 24-h cycles, demonstrating high stability. DFT calculations on a simplified model, based on a Cu atom adsorbed on GPN and CNT, reveal a thermodynamically favorable pathway to explain the antibacterial activity. The results show a mechanism that could promote the formation of the precursors of hydroxyl (⦁OH), superoxide (⦁O₂⁻), and hydroperoxyl (⦁OOH) radicals, which are adsorbed strongly on GPN and CNT surfaces. This study highlighted the critical role of Cu NPs-loaded on carbon materials, GPN and CNT, in enhancing the antibacterial activity.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173007","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":"Synergistic effect of rGO decoration on ZnFe2O4 nanorods for low concentration detection of ammonia at room temperature with high selectivity and response","authors":"","doi":"10.1016/j.surfin.2024.105076","DOIUrl":"10.1016/j.surfin.2024.105076","url":null,"abstract":"<div><p>This study introduces an improved sensor for detecting ammonia (NH₃) gas using Zinc Ferrite (ZF) decorated with reduced graphene oxide (rGO) films, prepared through spray pyrolysis and spin coating methods. NH₃, a major pollutant in fertilizer production, poses significant health and environmental risks even at low concentrations. Therefore, detecting NH₃ below exposure limits (25 ppm) is crucial for protecting ecosystems and human health. The prepared optimal rGO concentration and ZF (ZFG1.5) sensor exhibit excellent NH₃ response (45) towards 1 ppm, which is sevenfold better than the ZF film without rGO decoration. This enhancement is attributed to the ZF nanorods on the surface of the rGO, establishing a firm surface interaction with the ZF. This configuration accelerates electron transfer and promotes the adsorption/desorption of gas molecules, further contributing to the improved gas-solid interaction. Besides, the sensor demonstrated excellent repeatability (1.15 %), long-term stability, and high humidity tolerance (coefficient of variation 1.48 %). Additionally, the ZFG1.5 sensor showed a distinct selectivity for NH₃ in a mixed gas environment. The ZFG1.5 sensor is promising for real-time NH₃ monitoring below exposure limits, making it a valuable tool for environmental and health safety.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232698","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":"Water-stable S-functionalized Ti3C2 MXene for high-performance Sr and Cs adsorption","authors":"","doi":"10.1016/j.surfin.2024.105072","DOIUrl":"10.1016/j.surfin.2024.105072","url":null,"abstract":"<div><p>In this study, S-functionalized Ti₃C₂ MXene has been systematically investigated as a potential adsorbent for Sr and Cs ions using first-principles simulations. In sharp contrast to Ti₃C₂O₂ MXene, Ti₃C₂S₂ nanolayers remain stable in water at room temperature, which is attributed to the terminal S functional group isolating water molecules. Taking into account the factors such as exfoliation feasibility, adsorption strength, adsorption capacity and competitive ion interference, we have identified Ti₃C₂S₂ as a highly promising adsorbent for Sr and Cs ions. Specifically, in terms of adsorption capacity, the adsorption saturation of Ti₃C₂S₂ for Sr and Cs has been reached a coverage of 1 monolayer and 8/9 monolayer, respectively, surpassing all the commonly reported Ti₃C₂T₂ (<em>T</em> = <em>O</em>, F, and OH) MXenes.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162177","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":"Room temperature deposited highly conductive HfNx films for high-performance HfN/Si junction diodes","authors":"","doi":"10.1016/j.surfin.2024.105045","DOIUrl":"10.1016/j.surfin.2024.105045","url":null,"abstract":"<div><p>Transition metal nitrides are valuable materials for many technological applications due to their favorable physical characteristics, including conductivity, high temperature stability, and hardness. Among them, hafnium nitride (HfN) thin films of high attributes are crucial for semiconductor applications. However, achieving performance efficiency of HfN films with desired electrical performance via conventional deposition methods is a challenging task. Herein, we have achieved room temperature growth of highly oriented cubic HfN thin film grown on Si substrate by process optimization of radio frequency (RF) magnetron sputtering. HfN thin films were structurally, morphologically, and electrically characterized. The metallic behavior of HfN films was confirmed through current-voltage measurements; it showcased excellent electrical conductivity, signifying low resistivity (≈ 0.55 kΩ sq^-1), revealing promising evidence for its potential practical application. Moreover, the first-principles calculations were also conducted to gain further insights into the electrical performance of the HfN films. These findings lay a solid foundation for further exploration and development of HfN-based junction diodes, as the observed characteristics offer significant potential for enhancing device performance in various electronic domains.</p></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S246802302401201X/pdfft?md5=5f5b451c3fced455c5dfb639d1b27bd2&pid=1-s2.0-S246802302401201X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142162037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}