Results in Surfaces and Interfaces最新文献

{"title":"Effects of non-Fourier heat flux and viscous dissipation on Sutterby Ag–Au/blood hybrid nanofluid flow","authors":"Muhammad Awais ,&nbsp;Sreelakshmi Kata ,&nbsp;R. Vijaya Lakshmi ,&nbsp;Abdulkareem Afandi ,&nbsp;Hakim AL Garalleh ,&nbsp;Amjid Rashid","doi":"10.1016/j.rsurfi.2026.100736","DOIUrl":"10.1016/j.rsurfi.2026.100736","url":null,"abstract":"<div><div>The purpose of current study is to analyse the flow and thermal behaviour of Sutterby hybrid nanofluids, with particular attention given to an inclined magnetic field, viscous dissipation, heat source, Cattaneo-Christov heat flux, and thermal radiation model. In this work, we consider the <span><math><mrow><mi>A</mi><mi>g</mi><mo>−</mo><mi>A</mi><mi>u</mi><mo>/</mo><mtext>Blood</mtext></mrow></math></span> based hybrid nanoparticle in the non-Newtonian Sutterby fluid in order to investigate how much they create the enhancement in the thermal conductivity. As the inclined magnetic field interacts with the electrically conducting fluid, its impacts on flow properties are examined. A more precise description of heat flow is obtained by using the Cattaneo-Christov model, which considers the speed limitations of heat conduction. The thermal transport analysis are investigated by using the thermal radiation, viscous dissipation and heat source or sink. The physical phenomena stated above have an impact on the formulation of the governing equations of mass, momentum and energy transfer. The model is established in the form of dimensional PDEs and suitable transformations is applied to translate the PDEs into non-dimensional ODEs. A mathematical model is created, and suitable numerical technique (Runge-Kutta 4^th order) are used to find solutions. The findings demonstrate the combined impact of these variables on the fluid flow's temperature distribution, velocity profiles, and heat transfer rates. The results reveals that Lorentz force or retardation force causes the velocity profile to decrease as the magnetic field increases. When comparing the Ag/blood case to the Ag-Au/blood case based on the Sutterby Deborah number, the depth of the thermal boundary layer rapidly drops. The hybrid nanofluid's temperature rises while its velocity decreases due to the nanoparticle volume percentage parameter. The friction drag heightens along with the Sutterby Deborah number and Power-law index estimates.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100736"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146172832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dopant-induced charge reversal and structural evolution in cobalt-doped ZnO nanoparticles: Linking lattice modification to colloidal behavior","authors":"Mohammad Zibafar,&nbsp;Reza Eslami-Farsani","doi":"10.1016/j.rsurfi.2026.100801","DOIUrl":"10.1016/j.rsurfi.2026.100801","url":null,"abstract":"<div><div>This study presents a comprehensive investigation into the impact of progressive cobalt doping on the structure, morphology, surface characteristics, and electrokinetic behavior of ZnO nanoparticles. A combination of X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), Brunauer–Emmett–Teller (BET) surface area analysis, and zeta potential measurements was used to evaluate samples across five doping levels. Pure and cobalt-doped ZnO nanoparticles were synthesized via a co-precipitation method, maintaining a total metal ion concentration of 0.1 M with partial substitution of Zn²⁺ by Co²⁺. Structural analysis showed a reduction in crystallite size and microstrain at low (ZnO-Co0.5 sample) to moderate (ZnO-Co1.5 sample) doping levels, with secondary phase formation emerging at very high doping (ZnO-Co5.0 sample). FESEM confirmed a morphological transition from rod-like grains in pure ZnO to compact particles at moderate doping, followed by fragmentation at higher concentrations. BET data revealed enhanced surface area and mesoporosity, while EDS confirmed increasing dopant incorporation. A key finding was the charge reversal of zeta potential from negative (−14.4 mV) in pure ZnO to positive (+21.8 mV) at high doping (ZnO-Co2.5 sample), a +36.2 mV swing. This transition is closely tied to changes in surface chemistry and particle dispersion stability.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100801"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced spinel layer stability in Cu-alloyed FeNi coatings fabricated by spark plasma sintering: Effects of heat treatment and high-temperature oxidation on suppressing void formation","authors":"Anawati Anawati ,&nbsp;Fajria Azzahra Maharani ,&nbsp;Toto Sudiro ,&nbsp;Ahmad Afandi","doi":"10.1016/j.rsurfi.2026.100826","DOIUrl":"10.1016/j.rsurfi.2026.100826","url":null,"abstract":"<div><div>Developing a dense and continuous spinel layer is essential for solid oxide fuel cell (SOFC) interconnects to suppress Cr₂O₃ volatilization and prevent cathode poisoning. This study investigates the influence of Cu alloying and post-heat treatment on the oxidation behavior of FeNi coatings synthesized via Spark Plasma Sintering (SPS) on Sandvik Sanergy HT steel. Post-treatment was conducted at 800 °C in vacuum, followed by a 100-h oxidation test in air. The results showed that Cu alloying significantly accelerated the formation of a protective NiFe₂O₄ spinel layer and effectively suppresses Kirkendall void formation at the coating-oxide interface. While heat treatment further reduced void density and promoted scale growth, the synergistic effect of Cu alloying provided superior interfacial stability and structural integrity. The findings suggest that Cu-doped FeNi coatings offer a robust strategy for enhancing the long-term reliability of SOFC interconnects by facilitating continuous oxide scale development and mitigating interfacial degradation.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100826"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147849579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of MIL-88B(Fe) as an efficient catalyst for boosting phenol and tetracycline removal in a heterogeneous sono-Fenton process","authors":"Mehrdad Hassan Abadi ,&nbsp;Tahere Taghizade Firozjaee ,&nbsp;Jafar Abdi ,&nbsp;Behnaz Latifian","doi":"10.1016/j.rsurfi.2026.100822","DOIUrl":"10.1016/j.rsurfi.2026.100822","url":null,"abstract":"<div><div>This study investigated the removal of the organic pollutants phenol and tetracycline (TC) from wastewater using the iron-based metal-organic framework (MOF) catalyst MIL-88B(Fe) in a heterogeneous sono-Fenton process. The morphological and structural properties of the synthesized MIL-88B(Fe) catalyst were comprehensively characterized using advanced techniques, including FE-SEM, EDS, FTIR, XRD, BET, UV-Vis DRS, EIS, TOC, and zeta potential analysis. To optimize the removal efficiency of the target pollutants, a comprehensive parametric study was conducted. The optimization results revealed high removal efficiencies within a 60 min process: 97.4% for phenol (10 mg L⁻¹, pH 7.5, 9.8 mM H₂O₂, and 0.1 g L⁻¹ of catalyst) and 95.3% for TC (30 mg L⁻¹, pH 11, 3.92 mM H₂O₂, and 1 0.1 of g·L⁻¹ catalyst), both achieved at an acoustic power density of 62.76 W L⁻¹. The calculated synergy index values of 2.18 and 1.92 for phenol and TC removal, respectively, confirmed strong coupling among US, H₂O₂, and MIL-88B(Fe). Kinetic analysis using the Langmuir-Hinshelwood model indicated that a surface-mediated reaction, rather than bulk-phase radical attack, is the dominant mechanism. The results confirmed that OH^● and h⁺ were the dominant reactive species, while <span><math><mrow><msubsup><mi>O</mi><mn>2</mn><mrow><mo>·</mo><mo>−</mo></mrow></msubsup></mrow></math></span> played a secondary role. In addition, the sonocatalyst showed robust reusability and stability over four successive recycling cycles. These findings highlight the potential of the MIL-88B(Fe) catalyzed heterogeneous sono-Fenton process as an effective technology for treating wastewater containing persistent organic pollutants.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100822"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to ‘Detailed interface composition of graphitized soot and carbon T900: Reference material for atmospheric studies investigated by a flowing gas experiment’ [Results Surf. Interface 23, 100737]","authors":"Olga B. Popovicheva ,&nbsp;Christian Ludwig ,&nbsp;Michel J. Rossi","doi":"10.1016/j.rsurfi.2026.100740","DOIUrl":"10.1016/j.rsurfi.2026.100740","url":null,"abstract":"","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100740"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147944798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"APTES modification of optical fibers: Dip coating and silanization approaches","authors":"Mackerina Awing Mamat ,&nbsp;Noor Azie Azura Mohd Arif ,&nbsp;Ruhana Hassan ,&nbsp;Nur Nadia Dzulkifli","doi":"10.1016/j.rsurfi.2026.100819","DOIUrl":"10.1016/j.rsurfi.2026.100819","url":null,"abstract":"<div><div>This study compares two (3-aminopropyl) triethoxysilane (APTES)-based surface functionalization techniques—silanization and dip coating—for modifying silica optical fibers intended for sensing applications. Here, six concentrations of APTES (0.5%–3.0%) were investigated, and the resulting fiber properties were evaluated using gravimetric methods, adsorption isotherm plots, Fourier-transform infrared (FTIR) spectroscopy, and field-emission scanning electron microscopy (FESEM)–energy-dispersive X-ray spectroscopy (EDX). Gravimetric results showed an increase in APTES mass accumulation for both methods. Dip coating consistently produced higher surface loading, with a maximum mean mass of 2.33 mg compared with 2.00 mg for silanization. The process adhered to a Freundlich isotherm (<em>R</em>² &gt; 0.98), with the calculated standard Gibbs free energy ranging between −8.30 and −8.67 kJ mol⁻¹, indicating spontaneous physisorption. Attenuated total reflectance–FTIR spectra confirmed successful APTES functionalization through the presence of characteristic C–H and N–H vibrational bands. FESEM analysis revealed that silanization produced stable, uniform thin films, whereas dip coating formed thicker, irregular multilayer structures with surface aggregation. EDX analysis further supported these observations by indicating a higher nitrogen content on the fiber surface for silanized samples (3.84 at%) compared with the dip-coated samples (3.32 at%). These findings demonstrate that dip coating enhances surface mass loading, whereas silanization produces more uniform and chemically stable functional layers, providing practical guidance for the design of optical fiber biosensors.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100819"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative adsorption mechanisms of cationic and non-ionic surfactants on biotite surfaces: An electrokinetic and spectroscopic study","authors":"Zeynep Üçerler-Çamur ,&nbsp;Ozgul Keles ,&nbsp;Murat Olgaç Kangal","doi":"10.1016/j.rsurfi.2026.100827","DOIUrl":"10.1016/j.rsurfi.2026.100827","url":null,"abstract":"<div><div>This study investigated the surface interactions between selective different type collectors widely employed in industrial feldspar or nepheline beneficiation processes and lithium-bearing biotite contained in nepheline syenites from the Kırşehir region in order to evaluate their suitability for flotation-based lithium recovery. The interactions of Der A4, DAHC, and Derna 7 with biotite were examined through surface tension, contact angle, zeta potential, and FTIR analyses under varying collector concentrations and pH conditions (2.5, 4.0, 6.5, and 9.5). Surface tension measurements showed that both Der A4 and DAHC gradually reduced the surface tension, reaching their critical micelle concentration (CMC) at lower collector concentrations as the pH became more alkaline. In contrast, Derna 7 reached its CMC at approximately 0.5 g/L across all tested pH values, while the lowest surface tension was observed at pH 9.5, where the value remained stable at concentrations ≥0.5 g/L. However, under these conditions, contact angle measurements could not be obtained due to the sudden spreading of the droplet and the formation of a thin film on the biotite surface. Der A4 exhibited the strongest hydrophobic modification, producing contact angles close to 90° even at low concentrations (0.1 g/L) across all pH values. DAHC showed a similar trend to Derna 7 at high pH, where spreading behavior occurred at concentrations near the CMC, indicating a temporary decrease in wettability. For Derna 7, the highest contact angle (∼45°) was obtained at 0.5 g/L and pH 2.5, while higher pH values resulted in reduced contact angles due to spreading effects. Zeta potential measurements revealed that increasing concentrations of Der A4 and DAHC shifted the initially negative biotite surface toward positive values, indicating strong adsorption, whereas Derna 7 made the surface more negatively charged with increasing concentration. Besides, FTIR analyses confirmed that the adsorption mechanisms of all collectors were predominantly physical in nature.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100827"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural properties and charge distribution in graphene/BN heterostructures","authors":"Knarik Yeritsyan,&nbsp;Gvido Bratina,&nbsp;Egon Pavlica","doi":"10.1016/j.rsurfi.2026.100812","DOIUrl":"10.1016/j.rsurfi.2026.100812","url":null,"abstract":"<div><div>We investigate the structural properties of heterostructures comprising bilayer graphene covered with hexagonal boron nitride (hBN) using density functional theory including non-local van der Waals corrections. Both AA<span><math><msup><mrow></mrow><mrow><mo>′</mo></mrow></msup></math></span> and AB stacking configurations of hBN are examined.</div><div>We find that the in-plane lattice parameter of the heterostructure exhibits a linear dependence on the reciprocal of the number of hBN layers, which can be understood within a continuum strain-sharing model. Beyond a critical thickness of approximately four hBN layers, the graphene–BN interface separation and the in-plane components of the macroscopic stress are strongly reduced.</div><div>This behavior is associated with a redistribution between elastic and van der Waals energy contributions driven by interfacial charge transfer. Our results highlight the interplay between strain accommodation, interlayer interactions, and charge redistribution in graphene/hBN heterostructures.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100812"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147849578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of stainless and mild steel filler on the microstructural evolution and mechanical integrity of TIG joints between IS 2062 and AISI 316L steels","authors":"M. Ahasan Habib,&nbsp;Md Mahadi Hassan Parvez,&nbsp;Md Mobashir Hosain,&nbsp;Md Lutfor Rahman,&nbsp;Irfan Ahmed","doi":"10.1016/j.rsurfi.2026.100821","DOIUrl":"10.1016/j.rsurfi.2026.100821","url":null,"abstract":"<div><div>This work represents the mechanical and microstructural characteristics of dissimilar weld joints between stainless steel-AISI 316 L and mild steel-IS 2062, fabricated by the tungsten inert gas welding process. Five different filler metals, namely ER316L, ER316, ER70S-6, ER308, and ER309, were selected for this study. Argon gas was used as shielding gas with a flow rate of 10 L/min. A direct current electrode-negative polarity was maintained during the welding. Welding was performed using a current of about 210 A and a voltage of 24 V in a single pass with a non-consumable 98% tungsten-2% thoriated electrode of 1.6 mm diameter. The tensile, impact, and micro-hardness tests were carried out to ensure the quality of welds, and SEM analysis was carried out to investigate the microstructural properties. Among the welded joints tested, the joint with ER309 exhibited the highest ultimate tensile strength at 656 MPa, surpassing SS316L (650 MPa) and MS2062 (410 MPa). The joint with ER316 filler demonstrated the highest impact strength of 191.25 J/m², while the joint welded with ER70S-6 achieved the highest Rockwell hardness (133.5 RHN) and Brinell hardness (363 BHN). Microstructural analysis showed varying microstructures, including duplex, martensitic, and bainitic, which influenced mechanical performance. Some samples revealed porosity and larger grain sizes, suggesting a need for optimized heat treatment to enhance weld integrity. Ultimately, ER316 offered the best combination of strength, toughness, and hardness for industrial applications demanding durable welded joints.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100821"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147849582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CeO2-Bi2O3 nanocomposite integrated zinc phosphate coating for mitigation of corrosion and wear of mild steel in high-salinity environment","authors":"S. Ayesha Barsana ,&nbsp;M.J. Umapathy ,&nbsp;A. Sultan Nasar","doi":"10.1016/j.rsurfi.2026.100818","DOIUrl":"10.1016/j.rsurfi.2026.100818","url":null,"abstract":"<div><div>Zinc phosphate coatings are choice of preference in many industrial sectors for their robust anticorrosion performance under harsh conditions. However, the non-uniform thickness and cracks formed in the phosphate crystal layer are the main drawbacks of this coating. The present research details the development of novel zinc phosphate coatings through incorporation of newly synthesized CeO₂-Bi₂O₃ nanocomposite. Concentration of this additive was varied between 0.3 g L⁻¹ and 0.9 g L⁻¹ and the performance of resultant coatings were compared with unmodified coating. This nanomaterial enhanced both anticorrosion and wear characteristics of the coatings applied on mild steel. Besides, this additive improved the coating homogeneity, compactness and micro hardness. Exhaustive corrosion analyses results revealed that this additive was most effective at 0.3 g L⁻¹ where it reduced the corrosion current density (I<strong>_corr</strong>) from 90.55 μA cm⁻² to 0.88 μA cm⁻² and corrosion rate (CR) from 1.065 mm per year to 0.010 mm per year and increased the polarisation resistance (R<strong>_p</strong>) from 518 Ω cm² to 20568 Ω cm² and charge transfer resistance (R<strong>_ct</strong>) from 114 Ω cm² to 23640 Ω cm². The enhanced corrosion protection was supported by durability assessments i.e., accelerated salt-spray and long-term stability tests. The proven modified coating exhibited better tribological properties; it showed 37.5 % reduced friction coefficient and 57 % reduced wear rate compared with unmodified coating for 15 N applied loads under dry condition. The better tribo characteristics of the modified coating recorded under wet condition significantly outperforming the unmodified coating.</div></div>","PeriodicalId":21085,"journal":{"name":"Results in Surfaces and Interfaces","volume":"23 ","pages":"Article 100818"},"PeriodicalIF":0.0,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}