Surfaces and Interfaces最新文献

{"title":"Acid-assisted strategy towards reuse of waste polyimide materials for multi-scenario thermally insulating and high-strength functional applications","authors":"Yuhang Zhuang ,&nbsp;Meixin Chen ,&nbsp;Zehang Du ,&nbsp;Shiying Chen ,&nbsp;Kailai Xia ,&nbsp;Liuyan Li ,&nbsp;Ronglong Ye ,&nbsp;Xiaolin Lyu ,&nbsp;Zhixing Lu ,&nbsp;Mingmao Wu","doi":"10.1016/j.surfin.2025.106946","DOIUrl":"10.1016/j.surfin.2025.106946","url":null,"abstract":"<div><div>Polyimide (PI) has attracted significant attention due to its outstanding comprehensive properties. However, its rigid molecular structure and chemical inertness pose challenges for the effective reuse of waste PI, causing environmental concerns and resource depletion. In this work, we present an acid-assisted sulfonation approach to efficiently reuse waste PI materials. The sulfonated PI (SPI) dispersion produced by this method can be readily processed with water-soluble polymers. For example, the fabricated SPI/sodium alginate composite fibers demonstrate impressive tensile strength (162 MPa) and thermal insulation properties. Furthermore, the resulting SPI/reduced graphene oxide aerogels exhibit a unique combination of high fatigue resistance, low thermal conductivity (0.0276 W <em>m</em>⁻¹ K⁻¹) and excellent sensing performance. These findings confirm that this method offers an effective route for repurposing waste PI into value-added products that meet the needs of different specific application scenarios, contributing to sustainable economic development.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"71 ","pages":"Article 106946"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306902","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":"RuO2/IrO2 nanoparticles on graphene modified screen-printed electrode for enhanced electrochemical detection of ascorbic acid","authors":"Claudia Cirillo ,&nbsp;Mariagrazia Iuliano ,&nbsp;Elena Navarrete Astorga ,&nbsp;Maria Sarno","doi":"10.1016/j.surfin.2025.106943","DOIUrl":"10.1016/j.surfin.2025.106943","url":null,"abstract":"<div><div>This study presents the development and characterization of a screen-printed electrode modified with RuO₂/IrO₂ nanoparticles supported on reduced graphene oxide (rGO) for the electrochemical detection of ascorbic acid (AA). Structural and morphological analyses using electron microscopy and X-ray diffraction confirmed a uniform distribution of nanoparticles across the rGO surface, creating a three-dimensional structure that enhances electron transfer efficiency. The modified electrode exhibited high sensitivity and selectivity for AA detection, with a detection limit of 0.86 µM. The obtained anti-interference properties and operational stability demonstrate that the RuO₂/IrO₂@rGO-SPE electrode is an effective solution for accurate AA detection, with potential applications in clinical, pharmaceutical, and environmental fields.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"72 ","pages":"Article 106943"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313258","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 additives (KF, KI) on nucleation mechanism and morphology of deposited products of Fe in LiCl-KCl system","authors":"Hedi Wei ,&nbsp;Mei Li ,&nbsp;Tiexin Yang ,&nbsp;Yixuan Cai ,&nbsp;Meng Zhang ,&nbsp;Rugeng Liu ,&nbsp;Wei Han","doi":"10.1016/j.surfin.2025.106935","DOIUrl":"10.1016/j.surfin.2025.106935","url":null,"abstract":"<div><div>In this work, the effects of additives (KF and KI) on the reduction/nucleation mechanism of Fe(II) and the morphology of the deposits were investigated in LiCl-KCl molten salt using electrochemical techniques. It was found that with the continuous increase of <em>F</em>⁻ or <em>I</em>⁻, the deposition potential of Fe shifted slightly towards the negative direction, and the mechanism of action was different. The nucleation mechanism of Fe under different additives (KI and KF) was analyzed using chronoamperometry, and found to be instantaneous nucleation. The nucleus density was estimated, indicating that under the same conditions, the nucleus density of Fe after adding <em>F</em>⁻ was slight larger than that after adding <em>I</em>⁻. Additionally, Potentiostatic electrolysis was carried out by adding different additives to LiCl-KCl molten salt. XRD results showed the formation of Fe coatings. The texture coefficients of Fe before and after adding the additives were calculated, showing that they remained basically unchanged. The surface morphology, roughness and thickness of Fe coatings prepared with different additives were compared by SEM-EDS and LSM, which illustrated that after the addition of <em>F</em>⁻ or <em>I</em>⁻, the surface morphology of the products changed from blocky particles to spherical aggregates or larger polyhedrons. The roughness was 0.970 μm, 0.840 μm (<span><math><mrow><msub><mi>C</mi><msup><mrow><mi>F</mi></mrow><mo>−</mo></msup></msub><mo>/</mo><msub><mi>C</mi><mrow><mi>F</mi><mi>e</mi><mo>(</mo><mi>I</mi><mi>I</mi><mo>)</mo></mrow></msub></mrow></math></span>=4), and 0.801 μm (<span><math><mrow><msub><mi>C</mi><msup><mrow><mi>I</mi></mrow><mo>−</mo></msup></msub><mo>/</mo><msub><mi>C</mi><mrow><mi>F</mi><mi>e</mi><mo>(</mo><mi>I</mi><mi>I</mi><mo>)</mo></mrow></msub></mrow></math></span>=4); and the thickness was(51.8 μm, 47.8 μm (<span><math><mrow><msub><mi>C</mi><msup><mrow><mi>F</mi></mrow><mo>−</mo></msup></msub><mo>/</mo><msub><mi>C</mi><mrow><mi>F</mi><mi>e</mi><mo>(</mo><mi>I</mi><mi>I</mi><mo>)</mo></mrow></msub></mrow></math></span>=4), and 48.5 μm (<span><math><mrow><msub><mi>C</mi><msup><mrow><mi>I</mi></mrow><mo>−</mo></msup></msub><mo>/</mo><msub><mi>C</mi><mrow><mi>F</mi><mi>e</mi><mo>(</mo><mi>I</mi><mi>I</mi><mo>)</mo></mrow></msub></mrow></math></span>=4), respectively.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"72 ","pages":"Article 106935"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314656","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":"The synthesis of Cu doped graphene-polyaniline nanocomposite towards high antibacterial activity in physiological pH environment","authors":"Tingting Wang,&nbsp;Aiping Zhu","doi":"10.1016/j.surfin.2025.106932","DOIUrl":"10.1016/j.surfin.2025.106932","url":null,"abstract":"<div><div>The graphene-polyaniline (GNP-PANI) nanocomposite, a kind of important nanocomposite of PANI due to its large specific surface area, good electrical conductivity, reversible redox activity, eco-stability, and being produced on an industrial scale, has gained significant attention in the field of sensors, supercapacitors, metal anti-corrosion coatings and so on. However, its performance will sharply decline when in a neutral pH environment, which greatly limits its application. In this study, Cu doped GNP-PANI (Cu@GNP-PANI) has been first prepared to achieve high antibacterial activity in a physiological pH environment. Unlike acid doped GNP-PANI, Cu@GNP-PANI has strong delocalized π-cation interactions thus leading to unique crystallization behavior, thermal stability revealed by FT-IR, Raman, UV–Vis, XPS, HAADF-STEM and TGA analyses. The resulting aqueous polyurethane coating with 0.5 wt % of 12wt %Cu@GNP-PANI demonstrated complete antibacterial effect on both <em>Staphylococcus aureus (S. aureus)</em> and <em>Escherichia coli (E. coli)</em>. The excellent antibacterial activity of Cu@GNP-PANI has been revealed to be the synergistic effects of high reactive oxygen species (ROS), electrostatic and “nano knife”.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"72 ","pages":"Article 106932"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331267","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":"Theoretical investigation of Ni, Cu, Nb-doped HfS2 monolayers for sensing biomarkers relevant to early health status","authors":"Shuhong Xie ,&nbsp;Weixing Zhan ,&nbsp;Hanyu Zhang","doi":"10.1016/j.surfin.2025.106956","DOIUrl":"10.1016/j.surfin.2025.106956","url":null,"abstract":"<div><div>The early evaluation of health status is critical for enhancing patient outcomes, and the detection of biomarkers in exhaled breath offers a promising approach to achieve this goal. However, developing sensing materials that simultaneously exhibit high sensitivity, selectivity, and rapid recovery characteristics remains a significant challenge. Herein, first-principles calculations are employed to systematically investigate the adsorption behavior and sensing properties of the four biomarker gases (NO, NH₃, NO₂, H₂S) on transition metal (TM)-functionalized HfS₂ monolayers (HfS₂-TM, TM = Ni, Cu, Nb), aiming to explore the potential of HfS₂-TM materials as sensors for these biomarker gases. The results show that Ni, Cu, and Nb atoms can stably dope onto the HfS₂ monolayer and significantly enhance the adsorption capacity for target gases through the formation of chemical bonds. The gas adsorption process induces notable changes in the bandgap and work function of HfS₂-TM materials, indicating excellent sensing responses. Specifically, all HfS₂-TM can serve as highly sensitive resistive sensors for NO and NO₂ due to their large |Δ<em>E</em>_g| (&gt;25.5 %) and high <em>SR</em> values (40.07 ∼ 2.5 × 10⁸). These three materials also exhibit potential as high-response work function-based sensors for the four biomarker gases. Moreover, HfS₂-Ni and HfS₂-Cu demonstrate excellent selectivity against common interfering gases (H₂O, CO₂, N₂, and CH₄). Recovery time analysis reveals that HfS₂-Cu can function as a recyclable sensing material for NO at room temperature, with a recovery time of 0.57 s, while HfS₂-Ni and HfS₂-Cu monolayers are suitable for recyclable sensing of H₂S, NO₂, and NO at high temperatures. This study underscores the significant potential of HfS₂-TM monolayers in developing high-performance biomarker gas sensors for the early health assessment.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"72 ","pages":"Article 106956"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307443","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":"Application of Helmholtz Coils and superparamagnetic nanocarrier in localized inhibition of cancer cell migration and invasion","authors":"Sheng-Jie Shiue ,&nbsp;Ming-Shun Wu ,&nbsp;Xiao-Zhu Tang ,&nbsp;Hsin-Yi Lin","doi":"10.1016/j.surfin.2025.106942","DOIUrl":"10.1016/j.surfin.2025.106942","url":null,"abstract":"<div><div>Patients with advanced hepatocellular carcinoma (HCC) have a high death rate, and sorafenib, which has low solubility, is a common drug for HCC treatment. A system was designed to increase the bioavailability of sorafenib: sorafenib was loaded into iron oxide nanoparticles and extremely low frequency electromagnetic field (EMF; 100 Hz, 5mT) was applied to enhance sorafenib release from the nanocarrier. FTIR spectrum of the nanocarrier confirmed the existence of alginate coating and sorafenib. The nanoparticles were seen internalized by liver cancer cells HepG2 under fluorescence microscopy. The amount of sorafenib released from 1 mg of nanocarrier increased from 0.102 μg to 0.454 μg (<em>p</em> &lt; 0.001) in the presence of EMF generated by a pair of Helmholtz coils. Similar degrees of HepG2 cell apoptosis were observed between the group treated with free sorafenib (4μg/mL) and the group treated with sorafenib-loaded nanocarriers and EMF. The scratch migration test results showed that the group treated with sorafenib-loaded nanocarrier and EMF showed &lt;5 % of recovery while the group treated with free sorafenib had &lt;1 % recovery, both significantly lower than the untreated group (41.3 %, <em>p</em> &lt; 0.001). Compared to the untreated group, sorafenib-loaded nanocarrier with EMF reduced cell invasion by 79.2 %, and free sorafenib by 69.5 % (<em>p</em> &lt; 0.05). The combination of the SFB-loaded nanocarrier and EMF slowly released low levels of sorafenib and had similar inhibitory effects on cancer cells as did free sorafenib at therapeutic concentration. This indicates that less sorafenib may be used to treat HCC, possibly reducing side effects.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"72 ","pages":"Article 106942"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313261","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":"Efficient photocatalytic hydrogen evolution: synergistic triple heterojunctions based on ZnIn2S4, Co3O4 and SiC@g-C3N5","authors":"Bo Wang ,&nbsp;Wenxu Zhang ,&nbsp;Wei Li,&nbsp;Huiyang Xu,&nbsp;Yongyi Li,&nbsp;Shuanglong Li,&nbsp;Xiaorui Huang,&nbsp;Shichao Jiao,&nbsp;Di Lin,&nbsp;Huixiang Yan","doi":"10.1016/j.surfin.2025.106950","DOIUrl":"10.1016/j.surfin.2025.106950","url":null,"abstract":"<div><div>The production of hydrogen through photocatalytic technology has become a very attractive way to alleviate the problem of environmental pollution. In this work, A ZnIn₂S_4<img>Co₃O₄-(SiC@g-C₃N₅) triple heterojunctions structure was constructed. In this structure, a P-N heterojunction is formed by Co₃O₄ with ZIS, a Z-type heterojunction is constructed by ZIS with CN5, and a II-type heterojunction is formed by CN5 with SiC. The three are synergistically used to optimize the carrier migration path. Under this synergistic mechanism, Co₃O₄ increases the concentration of photogenerated electrons in the ZIS conduction band. It allows the photogenerated electrons to participate in the H⁺ reduction hydrogen generation reaction. Meanwhile, SiC facilitates further electron enrichment in the CN5 conduction band via the type - II heterojunction.SiC also boosts carrier migration efficiency through the Z - type pathway. In the ZnIn₂S₄ - Co₃O₄-(SiC@g - C₃N₅) system, the consumption rate of useless photogenerated electron - hole pairs per unit time is much higher than that in the ZIS - CN5 system with only one Z - type heterojunction. The number of photogenerated electrons on ZIS in the ZnIn₂S₄ - Co₃O₄-(SiC@g - C₃N₅) system is much higher than that in the ZIS - CN5 system. This greatly reduces the probability of the system's photogenerated carrier complexation. It also increases the charge separation efficiency. As a result, the photocatalytic efficiency is significantly improved. 20ZIS-Co-(SiC@CN5) composites exhibited efficient hydrogen production (13655μmol·g^-1-h^-1) in hydrogen production experiments. The ZIS - Co - (SiC@CN5) composites enable efficient separation and directional migration of photogenerated carriers via the collaborative action of the multilevel heterojunction. This action offers a scalable concept for designing highly efficient and stable photocatalysts for hydrogen production.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"71 ","pages":"Article 106950"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306903","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":"Novel UiO-66(Ce)/CdS/g-C3N4 ternary nanocomposite with boosted photoactivity in the degradation of the dye rhodamine B","authors":"Jemal M. Yassin ,&nbsp;Abi M. Taddesse ,&nbsp;Manuel Sánchez-Sánchez","doi":"10.1016/j.surfin.2025.106945","DOIUrl":"10.1016/j.surfin.2025.106945","url":null,"abstract":"<div><div>Metal-Organic Frameworks (MOFs) are a category of porous material recognized for their tuneable structures and high surface areas, making them promising candidates for various applications, including photocatalysis. Among these, UiO-66(Ce) has attracted significant attention from the scientific community due to its impressive redox capabilities, effective ligand-to-metal charge transfer, and effecient charge-hole separation. This study reports the successful synthesis of novel ternary nanocomposite that combined UiO-66(Ce) with CdS and g-C₃N₄. The physicochemical characterization was addressed using XRD, XPS, FE-SEM-EDS, EDS mapping, FTIR, TGA, N₂ adsorption-desorption isotherms, PL and DRS-UV–vis techniques. These studies confirm the effective formation of heterojunction nanocomposite materials. The ternary nanocomposites were evaluated as photocatalysts in the degradation of the dye rhodamine B, achieving degradation rates of 97.5 % and 99.5 % within 120 min under visible light and sunlight systems, respectively. These rates significantly surpassed the photocatalytic performance of the individual components and their binary combinations. The results highlight significant synergistic effects within the heterostructures, enhancing the transfer of charges across interfaces and bettering the separation of light-generated electron-hole pairs. The produced active intermediates, including hydroxyl radicals (^•OH), superoxide anions (^•O₂^-), and holes (<em>h</em>⁺), exhibited nearly equivalent quenching effects. Furthermore, the synthesized ternary nanocomposite demonstrated remarkable stability and recyclability, maintaining considerable performance over at least five cycles. A potential reaction mechanism for the photocatalytic process has also been suggested.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"72 ","pages":"Article 106945"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322262","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":"Surface strain, oxidation effect, and reconstruction of spherical and faceted Ag and Pd nanoparticles","authors":"Chongyang Wang ,&nbsp;Shuang Shan ,&nbsp;Zhen Li ,&nbsp;Junpeng Wang ,&nbsp;Xinjie Wu ,&nbsp;Qiao Wang ,&nbsp;Fuyi Chen","doi":"10.1016/j.surfin.2025.106936","DOIUrl":"10.1016/j.surfin.2025.106936","url":null,"abstract":"<div><div>Surface strain plays a crucial role in enhancing the performance of nanocatalysts. In this work, the distribution of atomic strain and stress in three different structures (bulk, surface, and nanoparticle) of Ag and Pd was investigated. The atomic strain and stress in bulk structures approach 0 %, while the first atomic layer of surface structures exhibits a significant tensile state. For faceted nanoparticles, the compressive strain is localized along the edges and vertices of the surface, as well as in the inner core region, while tensile strain is observed on the surface facet. The Laplace pressure experienced by spherical nanoparticles of different sizes increases with decreasing radius, induces compressive atomic strain and stress both on the surface and within the interior of nanoparticles. After oxidation, tensile atomic strain and stress are induced in the oxidized surface regions, with the magnitudes increasing proportionally to the oxidation degree. We also developed an energy-dependence diagram for the structural reconstruction of faceted nanoparticles, revealing that the process is driven by surface reconstruction and atomic strain, with a strong dependence on both energy and temperature. These founds in this contribution provide a theoretical basis and insight for the future design of noble metal nanocatalysts.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"72 ","pages":"Article 106936"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144308145","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":"Towards Water-based superlubricity by charged graphene surface in the boundary lubrication regime","authors":"Zichen Wang ,&nbsp;Dashuai Mao ,&nbsp;Yifan Yu ,&nbsp;Hang Li ,&nbsp;Yonggan Yan ,&nbsp;Wei Zhang ,&nbsp;Junjie Lu ,&nbsp;Shaofeng Xu ,&nbsp;Junqin Shi","doi":"10.1016/j.surfin.2025.106957","DOIUrl":"10.1016/j.surfin.2025.106957","url":null,"abstract":"<div><div>A new model of graphene friction pair consisting of charged and uncharged surfaces was proposed to achieve water-based superlubricity in the boundary lubrication regime, and molecular dynamics (MD) simulations were performed to reveal superlubricity mechanisms. It is found that the new model of graphene friction pair can significantly reduce the friction coefficient by two orders of magnitude to 10e-3 and thus achieves superlubricity for water as a lubricant. The existence of slip plane between the uncharged graphene substrate and water molecules due to the disappearance of π-H bonds contributes low friction. In addition, fluidity of hydration layers induced by the charged graphene and low energy dissipation due to hydrogen bonding forces also contribute superlubricity. An optimal value of surface charge exists for achieving superlubricity with the minimum friction coefficient. Effects of ion concentration (NaCl) on superlubrication were also studied. The friction coefficient decreases with the increase of ion concentration. The electrostatic force induced by the charged graphene and salt solution can form a state of electrostatic suspension under a large normal load, and the smooth hydration layer can result in a smaller energy barrier to reducing friction. The current study provides a new vision for hydrated boundary superlubrication.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"72 ","pages":"Article 106957"},"PeriodicalIF":5.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322259","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}