Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献

{"title":"Non-equilibrium molecular dynamics simulation of CaCO3 nucleation and growth in C-S-H gel pores under various loading conditions","authors":"Shaojie Guan ,&nbsp;Te Liang ,&nbsp;Xuefu Zhang ,&nbsp;Jiachuan Ran ,&nbsp;Dongshuai Hou ,&nbsp;Shiyang Liu ,&nbsp;Xiangge Chen","doi":"10.1016/j.colsurfa.2025.136499","DOIUrl":"10.1016/j.colsurfa.2025.136499","url":null,"abstract":"<div><div>The crystallization behavior of CaCO₃ affects the durability of concrete structures and the environment, with nucleation and adsorption mechanisms under load conditions being critical to material performance and environmental compatibility. Therefore, this study systematically investigates the nucleation, growth, and dynamic characteristics of CaCO₃ clusters within the pores of the C-S-H matrix under different loading conditions. The results show that the nucleation of CaCO₃ is primarily driven by ionic bonds, while the adsorption mechanism of the clusters is governed by both ionic and hydrogen bonds. Unidirectional loading weakens the hydrogen bond structure between water molecules, resulting in higher hydrogen bond stability between CO₃²⁻ and water molecules than the ionic bond stability between CO₃²⁻ and Ca²⁺. This leads to the formation of a CO₃²⁻-water cage structure, thereby inhibiting CaCO₃ nucleation. In contrast, cyclic loading disrupts the stable bonding environment between the C-S-H surface and Ca²⁺/CO₃²⁻ ions, increasing the desorption potential of CaCO₃ clusters on the C-S-H surface and reflecting an “atomic bonding fatigue” phenomenon. This study contributes to a deeper understanding of the early formation and growth of CaCO₃ within concrete structures under complex loading conditions in underground engineering. It provides new insights into water environment protection issues, particularly related to groundwater hardness, which can affect both the durability of self-healing concrete in construction and the long-term sustainability of underground water resources.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136499"},"PeriodicalIF":4.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antimicrobial, anti-smudge dual-functional silica coating via interfacial chemical modification","authors":"Zongxuan Zhang ,&nbsp;Hui Zhang ,&nbsp;Yuanyuan Shao ,&nbsp;Haiping Zhang ,&nbsp;Yanfeng Luo ,&nbsp;Chunbao Xu ,&nbsp;Jesse Zhu","doi":"10.1016/j.colsurfa.2025.136514","DOIUrl":"10.1016/j.colsurfa.2025.136514","url":null,"abstract":"<div><div>Visual screens are susceptible to contamination from bacteria and smudges, while demanding high optical performance. Developing multifunctional coatings with anti-reflective, antibacterial, and anti-smudge properties is crucial to ensure optimal functionality and clarity. Herein, we developed a hydrophobic and antimicrobial SiO₂ antireflective coating by a two-component molecular chain synergistic strategy. The introduction of fluorosilane (FAS) components as defensive layer endowing the coating with hydrophobicity and significantly reducing bacterial and smudge adhesion to the surface. The quaternary ammonium salt (QAS) with positive charge of N⁺ facilitates the adsorption of negatively charged bacteria, disrupting their metabolism. The interplay between FAS and QAS was carefully tuned to achieve optimal performance. At the optimal state, the F_0.3/Q-SiO₂ coating exhibits an antimicrobial efficiency exceeding 99 %, along with a high WCA (&gt;104°) and light transmittance (&gt;93.4 %). Moreover, the coating demonstrates high mechanical durability, maintaining its optical clarity, anti-smudge properties, and antibacterial performance after 2000 wear cycles. This work demonstrates the synergistic effects of FAS and QAS in in enhancing antimicrobial properties, offering a promising solution for advanced visual screen applications requiring multifunctionality and durability.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136514"},"PeriodicalIF":4.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of coalescing plate escape hole structure on oil droplet escape performance","authors":"Jiayi Zhang ,&nbsp;Yujie Jia ,&nbsp;Kun Qian ,&nbsp;Dong Li ,&nbsp;Xiaoxue Jiang ,&nbsp;Xiaobing Wang","doi":"10.1016/j.colsurfa.2025.136500","DOIUrl":"10.1016/j.colsurfa.2025.136500","url":null,"abstract":"<div><div>The escape hole structure in corrugated coalescing plates significantly influences the stable ascending escape of oil droplets. To optimize the escape hole structure in unidirectional corrugated coalescing plates, a combination of numerical simulation and experimental methods was employed to study the impact of different escape hole structures within unidirectional corrugated plates on the escaping of oil droplets, comparing these with traditional escape hole shapes. The results indicate that when the escape hole structure is a corrugated plate with a smaller curvature at the lower end and a larger curvature at the upper end forming an arc curve, the oil droplet escape time is shortest, achieving optimal escape efficiency. This study proposes the ideal design of escape holes by modifying their form, which considerably enhances the efficiency and stability of oil droplet escape.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136500"},"PeriodicalIF":4.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fe-P modified sugar beet residue biochar efficiently adsorbs Cd(II) in solution and soil conditions: Preparation, performance, and mechanisms","authors":"Tianyuan Zhang,&nbsp;Hui Li,&nbsp;Sa Wang,&nbsp;Mengyuan Wang,&nbsp;Yaqi Jiao,&nbsp;Kai Wang,&nbsp;Junxin Jia,&nbsp;Qin Zhou,&nbsp;Hongliang Guo,&nbsp;Li Li","doi":"10.1016/j.colsurfa.2025.136498","DOIUrl":"10.1016/j.colsurfa.2025.136498","url":null,"abstract":"<div><div>Herein, Iron-phosphorus modified biochar was prepared by sugar beet residue from sugar refineries to achieve the dual synergy of efficiently utilizing agricultural waste in the sugar industry and remediating pollution. K₂HPO₄ served as an activator, while FeCl₃ functioned as an iron nanoparticle precursor. By controlling the raw material ratio and co-pyrolysis temperature, iron phosphorus activated porous biochar (Fe/P@SBC) material was synthesized. Characterization results indicated that Fe/P@SBC had larger surface area with 94.5 % greater than unmodified beet residue biochar, and possessed more developed pore structure, and confirmed abundant oxygen-containing functional groups and iron-phosphorus compounds. Fe/P@SBC appeared outstanding cadmium (Cd(II)) adsorption capacity of 145.5 mg/g with endothermic characteristic. The Langmuir model and pseudo-second-order kinetics indicated that the adsorption process primarily involved monolayer homogeneous chemical adsorption. Notably, the Cd(II) adsorption mechanisms by Fe/P@SBC involved mineral precipitation, surface complexation, and ion exchange. Also, electrostatic attraction, cation-π bonds, and pore filling acted synergistic effects. Fe/P@SBC demonstrated a certain degree of environmental resistance and reusability. Moreover, the uptake capacity of Fe/P@SBC in solution-soil system was 3.7 % higher than in aqueous solutions. Overall, Fe/P@SBC, a waste resource utilization with excellent performance, was supposed to be the promising adsorbent for Cd(II) pollution remediation.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136498"},"PeriodicalIF":4.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistically modified Ti2C MXene with poly glycidyl methacrylate and poly(3,4-ethylene dioxythiophene): Poly(styrene sulfonate) conducting polymers for enhanced photocatalytic degradation of ionic and cationic dyes","authors":"Umuhoza Claudine ,&nbsp;Pengfei Zhang ,&nbsp;Saleem Raza ,&nbsp;Junsheng Ye ,&nbsp;Ming Liu ,&nbsp;Ye Cheng ,&nbsp;Asif Hayat ,&nbsp;Ehsan Ghasali ,&nbsp;Yasin Orooji","doi":"10.1016/j.colsurfa.2025.136497","DOIUrl":"10.1016/j.colsurfa.2025.136497","url":null,"abstract":"<div><div>MXenes are a novel class of two-dimensional transition metal carbides and nitrides with remarkable properties and a broad variety of potential applications. This paper presents the creation of a 2D MXene-based photocatalyst by in-situ polymerization. Ti₂CTx MXene was produced by etching Ti₂AlC with HF and subsequently functionalized with glycidyl methacrylate (GMA) to create Ti₂C@PGMA. After that, Ti₂C@PGMA was incorporated with poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT: PSS) to synthesize Ti₂C@GMA/PEDOT: PSS, a conducting polymer thin film with a micrometer-scale thickness. The conducting polymer was integrated with the MXene substrate, enhancing its photocatalytic efficiency for dye degradation. Comprehensive characterization using SEM, FTIR, XPS, XRD, EDX, and BET confirmed its advanced properties. The photocatalyst attained degradation efficiencies of 94.9 % for Rhodamine B and 98.6 % for Congo Red from 10 mL of 10 mg/L dye solutions under visible light within 60 mins. The optimal breakdown occurred at acidic conditions, with the cationic dye Rhodamine B exhibiting greater efficiency than the anionic dye Congo Red. The effects of dye concentration and solution pH on photocatalytic degradation were systematically investigated, underscoring the advanced capabilities of Ti₂CTx MXene-based materials in wastewater treatment. This study demonstrates their significant potential as effective, visible-light-driven photocatalysts for mitigating environmental contamination.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136497"},"PeriodicalIF":4.9,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microscopic mechanisms and surface properties behind the enhanced flotation of pyrite using ceramic and steel balls","authors":"Jiaqi Tong ,&nbsp;Caibin Wu ,&nbsp;Chengfang Yuan ,&nbsp;Yiwei Cheng ,&nbsp;Yaowen Xing ,&nbsp;Guisheng Zeng ,&nbsp;Zhaoyu Zhou ,&nbsp;Zhiqiang Geng","doi":"10.1016/j.colsurfa.2025.136494","DOIUrl":"10.1016/j.colsurfa.2025.136494","url":null,"abstract":"<div><div>This study investigates the effects of steel and ceramic balls on pyrite flotation performance, focusing on microscopic mechanisms. The research utilized a combination of single-mineral flotation experiments, X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), specific surface area experiments (BET), contact angle measurements, and adhesion force testing. Flotation data shows ceramic ball-milled pyrite achieved approximately 10 % higher recovery than steel ball-milled pyrite across a wide pH range (pH 2–12). SEM analysis reveals ceramic ball-milled pyrite exhibits higher elongation, morphological parameters that enhance bubble adhesion. BET analysis indicates a rougher surface for ceramic ball-milled pyrite versus smoother for steel ball-milled. The study also explores the relationship between surface roughness and wettability, applying the Cassie and Wenzel models to explain how increased surface roughness influences flotation performance. In summary, ceramic ball milling significantly improves bubble adhesion to pyrite surfaces, enhancing its flotation performance. These findings provide a novel theoretical foundation for optimizing pyrite separation through grinding techniques, presenting significant advancements over previous research that predominantly focused on the electrochemical effects of grinding media. This study provides a comprehensive understanding of the mechanisms behind enhanced flotation, with practical implications for improving mineral processing efficiency and minimizing environmental impact.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136494"},"PeriodicalIF":4.9,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanism and countermeasures of influence of moraine impact on copper-molybdenum ore flotation","authors":"Wanting Yang ,&nbsp;Zhuoyue Lan ,&nbsp;Xiong Li ,&nbsp;Yunchuan Li","doi":"10.1016/j.colsurfa.2025.136496","DOIUrl":"10.1016/j.colsurfa.2025.136496","url":null,"abstract":"<div><div>The mechanism by which moraines influence the flotation process in high-altitude porphyry copper-molybdenum deposits was investigated. Micro-flotation experiments and tests using actual ore samples revealed that moraines significantly reduced the recovery and selectivity of copper-molybdenum ores. As the moraine content increased, the entrainment of gangue minerals also rose considerably. However, the addition of sodium silicate effectively mitigated this entrainment. At a sodium silicate dosage of 10 mg/L, copper recovery reached 90.42 % with a grade of 8.93 %, and gangue entrainment was reduced from 7.58 % to 4.01 %. Molybdenum recovery reached 96.56 % with a grade of 12.89 %, and the gangue entrainment rate decreased from 13.30 % to 1.93 %. Measurements of slurry rheology, viscosity, zeta potential, and slime coating tests further clarified that moraines affect the flotation of copper-molybdenum ores through a slime coating effect. At pH 4, moraine particles adhered to chalcopyrite and molybdenite surfaces, hindering effective collector-mineral interaction and reducing flotation efficiency. The addition of sodium silicate effectively mitigated both the mechanical entrainment and slime coating effects, promoting better separation of copper-molybdenum ores from moraines and improving the recovery and selectivity of target minerals. This study elucidates that the detrimental effects of moraine on the flotation of copper-molybdenum ores are predominantly attributed to entrainment and slime-coating phenomena. It further proposes an effective strategy to enhance the flotation efficiency of copper-molybdenum ores under moraine influence by incorporating sodium silicate.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136496"},"PeriodicalIF":4.9,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced catalytic performance through precise structural modification of Au-Ag nanoworms using controlled etching process","authors":"Ghazanfar Ali Khan ,&nbsp;Alpan Bek ,&nbsp;Jean-Francois Masson ,&nbsp;Waqqar Ahmed","doi":"10.1016/j.colsurfa.2025.136451","DOIUrl":"10.1016/j.colsurfa.2025.136451","url":null,"abstract":"<div><div>Polycrystalline nanomaterials inherently possess a high concentration of defects, owing to the presence of grain boundaries. These defects, while abundant in smaller nanoparticles (NPs), can become embedded within the bulk of larger particles, making them inaccessible to reactants during catalytic reactions. While deliberately arresting growth at the initial stage can reveal defect sites resulting in particles with significantly high surface energy, the precise control required to halt the growth of nanomaterials at the specific moment of optimal catalytic potential poses a formidable challenge. Herein, we introduce an alternative approach that involves the oxidative etching of fully developed polycrystalline Au-Ag alloy nanoworms (NWs). This process generates high-energy surfaces rich in defects, thereby substantially enhancing their catalytic activity. The NWs were synthesized by a seedless, single-step method and they were subsequently etched by using HAuCl₄ solution. The elaborate process underlying the transformation of NWs’ structures upon exposure to HAuCl₄ solution was elucidated. The Transmission Electron Microscopy (TEM) images showed a gradual decrease in the length and width of NWs and an increase in the defect density with etching. Remarkably, small alterations in the NWs’ morphology led to marked enhancement in their catalytic activity. To demonstrate this, NWs were employed for catalyzing the conversion of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). The optimized etching of NWs provided an approximately 24-fold enhancement in the activity compared to the unmodified NWs. The implications drawn from our results strongly imply that the structural modifications introduced by the etching process can be an effective technique for enhancing the catalytic activity of polycrystalline NPs.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136451"},"PeriodicalIF":4.9,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biosynthesis of non-toxic TiO2 nanoparticles using polysaccharide rich ⁠marine algae Caulerpa racemose for inhibition of biofilm-producing bacteria","authors":"Govindan Rajivgandhi ,&nbsp;Mudaliar Mahesh Margoni ,&nbsp;Malathi Mathiazhagan ,&nbsp;Chackaravarthi Gnanasekaran ,&nbsp;Chenthis Kanisha Chelliah ,&nbsp;S. Sathik Basha ,&nbsp;Govindan Ramachandran ,&nbsp;Muthuchamy Maruthupandy ,&nbsp;Ali Akbari-Fakhrabadi ,&nbsp;Veeramani Thangasamy ,&nbsp;Vijayabhaskara Rao Bhaviripudi ,&nbsp;Franck Quero","doi":"10.1016/j.colsurfa.2025.136483","DOIUrl":"10.1016/j.colsurfa.2025.136483","url":null,"abstract":"<div><div>The use of nanobiotechnology for the development of nanomaterials using environmentally friendly procedures and having combined ability to fight efficiently antibiotic-resistant biofilm-forming bacteria and having low toxicity remains challenging is critical for environmental and biomedical applications. In the present study, the experimental data obtained by coupled gas chromatography–mass spectrometry, Fourier transform infrared spectroscopy (FTIR), and high-performance liquid chromatography suggested that the polysaccharide rich algal extract simultaneously acted as bio-reduction and capping agent for the successful formation of TiO₂ nanoparticles (NPs) that showed anti-oxidant properties. The results obtained by ultraviolet–visible diffuse reflectance spectroscopy and FTIR indicated the presence of algal functional groups onto the surface of the TiO₂ NPs. Powder XRD analysis confirmed the polycrystalline nature of the TiO₂ NPs having tetragonal crystal structure. Field emission scanning and transmission electron microscopy as well as energy dispersive X-ray spectroscopy and elemental mapping revealed the formation of agglomerated non-spherical structures. The obtained TiO₂ NPs inhibited the formation of biofilms and stopped the metabolic respiration of <em>A. baumannii</em> and <em>K. pneumoniae</em> at 250 µg/mL. Anti-virulence and anti-pathogenicity effect of TiO₂ NPs due to the excessive production of reactive oxygen species on bacterial membrane was confirmed by confocal laser scanning microscopy. Scanning electron microscopy observation of cell integrity loss, architectural damage, and extracellular damage revealed that the obtained biosynthesized TiO₂ NPs had enhanced bio-efficiency against the tested pathogens. Lastly, a reduced death rate of <em>A. franciscana</em> was observed, suggesting that the biosynthesized TiO₂ NPs had low toxicity against that model. As a result, the present work demonstrated the potential of safe and biological methods for the production of TiO₂ NPs, improving their biological features against <em>A. baumannii</em> and <em>K. pneumoniae</em> and indicating their potential for clinical use.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136483"},"PeriodicalIF":4.9,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Emergence of repulsive viscoelastic forces at calcite surfaces in brines of variable salt content","authors":"Saravana Kumar ,&nbsp;Subhash C. Ayirala ,&nbsp;Mohammed B. Alotaibi ,&nbsp;Ali A. Yousef ,&nbsp;Igor Sîretanu ,&nbsp;Frieder Mugele","doi":"10.1016/j.colsurfa.2025.136487","DOIUrl":"10.1016/j.colsurfa.2025.136487","url":null,"abstract":"<div><div>Calcite-water interfaces near equilibrium are governed by dynamic dissolution and precipitation processes, leading to significant variability in interfacial properties. Measurements of surface forces and potentials in such systems have yielded inconsistent results across the literature. In this study, atomic force microscopy (AFM) is employed to investigate interaction forces at calcite <span><math><mrow><mfenced><mrow><mn>10</mn><mover><mrow><mn>1</mn></mrow><mo>̅</mo></mover><mn>4</mn></mrow></mfenced></mrow></math></span> surfaces in aqueous NaCl and CaCl₂ solutions across a range of concentrations. Two distinct interaction responses are identified: Type A, which aligns with classical Derjaguin-Landau-Verwey-Overbeek (DLVO) theory and is characterized by low surface potentials (&lt;5 mV), and Type B, which exhibits long-range viscoelastic repulsion and enhanced dissipation, indicative of a soft interfacial material. This viscoelastic interphase is hypothesized to arise from interface-coupled dissolution-precipitation reactions. Although the transition between these responses could not be systematically controlled, the findings reveal the dynamic and heterogeneous nature of calcite-water interfaces. This work advances the understanding of interfacial reactivity and highlights the role of transient phases in shaping interfacial behavior, with broad implications for biomineralization, geochemical processes, and materials science.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"713 ","pages":"Article 136487"},"PeriodicalIF":4.9,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}