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

{"title":"Robust PPy@PVA hydrogel for efficient ice prevention and all-day ice removal","authors":"Xingyu Zhao ,&nbsp;Qiran Yu ,&nbsp;Yumin Wang ,&nbsp;Linfan Li ,&nbsp;Xiao Miao ,&nbsp;Guina Ren ,&nbsp;Xiaotao Zhu","doi":"10.1016/j.colsurfa.2025.138499","DOIUrl":"10.1016/j.colsurfa.2025.138499","url":null,"abstract":"<div><div>The issue of ice accumulation has been demonstrated to markedly impact daily life and industrial facilities. The formidable challenges associated with ice prevention and removal necessitate the development of innovative and effective anti-icing and de-icing strategies. Herein, we have developed a polypyrrole coated polyvinyl alcohol (denoted as PPy@PVA) hydrogel with a water-dimethyl sulfoxide (water/DMSO) binary solvent infused into its network. The PPy@PVA hydrogel has robust mechanical properties, and stable slippery wettability, and it is also able to self-repair upon water/DMSO liquid overlayer depletion. The strong interaction between water and DMSO molecules results in a reduced freezing temperature of the hydrogel (up to as low as −60 °C), and it can also extend the water droplet freezing time significantly even in environments with high humidity and low temperature. The PPy@PVA hydrogel has been shown to exhibit both photothermal and electrothermal effects, thereby enabling the melting of accumulated ice layers on its surface through solar irradiation or by connecting it to a power source. Notably, when integrated with photothermal and electrothermal effects, the hydrogel exhibited a combination of all-day de-icing efficacy and accelerated ice melting time. This work presents a promising strategy for effective ice prevention and removal, with the potential for application in all-day and cold-weather de-icing.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138499"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218645","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 oil removal and eco-efficiency in recycled polyester yarn via flow-optimized waterless processing","authors":"Jie Chen ,&nbsp;Qin Fang ,&nbsp;Laijiu Zheng ,&nbsp;Huanda Zheng","doi":"10.1016/j.colsurfa.2025.138496","DOIUrl":"10.1016/j.colsurfa.2025.138496","url":null,"abstract":"<div><div>Supercritical CO₂ technology provides an effective means of mitigating environmental pollution caused by conventional water-based oil removal from synthetic fibers. However, the structural design of the bobbin hinders its efficiency. Herein, a bobbin was redesigned via computational fluid dynamics (CFD) simulation to enhance the oil removal efficiency of recycled polyester yarn. The redesigned bobbin (inner diameter 55 mm, pore diameters 5–8 mm) exhibited a more uniform fluid velocity and a reduction in total pressure loss by 715.07 Pa compared to the original design. Experimental validation confirmed that the oil removal rate was significantly increased from 58.54 % to 78.05 % in the inner layer, from 72.39 % to 75.46 % in the middle layer, and from 54.76 % to 69.64 % in the outer layer. The dyed samples after oil removal showed improved color depth (K/S value increased from 5.12 to 5.87) and uniformity. This design strategy achieves an energy savings of 22 kWh per ton of yarn while maintaining zero wastewater discharge, providing a theoretical foundation for the design of supercritical equipment.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138496"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218647","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 insight into the Fe3O4/biochar/BiOBr S–scheme heterostructure with improved photocatalytic degradation performance for pharmaceutical wastewater","authors":"Zihao Niu ,&nbsp;Chao Chen ,&nbsp;Zihan Yin ,&nbsp;Xiaofei Zhang ,&nbsp;Jing Sun ,&nbsp;Huanxian Shi","doi":"10.1016/j.colsurfa.2025.138518","DOIUrl":"10.1016/j.colsurfa.2025.138518","url":null,"abstract":"<div><div>Rapid recombination of photogenerated carriers is significant barrier to the photodegradation of organic contaminants in pharmaceutical wastewater. This study utilized BiOBr nanosheets as modifiers to improve the separation efficiency of photogenerated carriers and enhance the self–cleaning capability of magnetic biochar (Fe₃O₄/biochar). The photocatalytic performance of the novel system (Fe₃O₄/biochar/BiOBr) was evaluated by degrading tetracycline (TC) under visible light irradiation, achieving approximately 88.17 % degradation within 20 min. The intermediates and potential degradation pathways were thoroughly analyzed using liquid chromatography–mass spectrometry. The photocatalytic degradation mechanism and the enhancement of degradation activity were investigated using various techniques and DFT calculations. Electron spin resonance (ESR) measurements and trapping experiments identified ·OH, ¹O₂, ·O₂⁻, and <em>h</em>⁺ as the primary reactive species involved. The photogenerated charge transfer across the FCB heterojunction interface followed the S–scheme mechanism, as confirmed by optoelectronic experiments and density functional theory (DFT) calculations. This research introduces a novel approach to utilizing biochar–supported photocatalysts for pharmaceutical wastewater treatment.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138518"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218643","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":"Robust durable photothermal superhydrophobic coatings based on mussel-inspired adhesion chemistry for efficient anti-/de-icing","authors":"Meng Wu,&nbsp;Yusheng Zhang,&nbsp;Zhanxiang He,&nbsp;Hao Ding,&nbsp;Wangping Wu","doi":"10.1016/j.colsurfa.2025.138502","DOIUrl":"10.1016/j.colsurfa.2025.138502","url":null,"abstract":"<div><div>Icing on overhead transmission lines could lead to significant power system failures and substantial losses. Although superhydrophobic surfaces had proven effective in preventing icing, the surface structure and function of the most superhydrophobic anti-icing surfaces with low melting efficiency were easily damaged in extreme weather conditions. In this study, robust photothermal superhydrophobic coatings with excellent mechanochemical and icing-melting durability based on the fast mussel-inspired adhesion chemistry were developed. The abundant active functional groups in polydopamine (PDA), including phenolic hydroxyl and amino groups, enabled robust bonding between the aluminum alloy (Al) substrate and the hydrophobic layer via multiple bonding effects. The photothermal superhydrophobic surface (Al@DPDA-FAS) could reach the contact angle (CA) of 158 ± 3° and the sliding angle (SA) of 3°, and showed good photothermal property with temperature of 80.9 ℃ after 10 min of irradiation under 1 sun. Moreover, its delayed icing time significantly extended to 436 s, and the photothermal ice-melting time was shortened to 65 s, demonstrating anti-icing and de-icing performance. Additionally, the excellent durability of Al@DPDA-FAS was confirmed in various assessments, including mechanical abrasion, chemical soaking, cyclic icing/melting. Its surface still had superhydrophobicity after 12 m of sandpaper abrasion, soaking in acid for 18 h, soaking in alkali for 3 days and 40 cycles of icing/melting, respectively. Moreover, the corrosion inhibition efficiency of Al@DPDA-FAS could reach 99.49 % in comparison with the bare Al surface. This work presented a novel approach to develop a robust superhydrophobic coatings with excellent photothermal anti/de-icing property through mussel-inspired adhesion chemistry.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138502"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218496","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":"Preparation of novel magnetic hydrotalcite-based adsorbents and their synergistic adsorption of dye molecules and heavy metal ions: Response surface methodology analysis and adsorption mechanisms investigation","authors":"Keran Li ,&nbsp;Hong Luo ,&nbsp;Jie Wu ,&nbsp;Denghao Ouyang ,&nbsp;Junlei Tang","doi":"10.1016/j.colsurfa.2025.138519","DOIUrl":"10.1016/j.colsurfa.2025.138519","url":null,"abstract":"<div><div>In recent years, the discharge of dyestuff wastewater has caused great pollution to the environment. This study successfully prepared a novel magnetic layered double hydroxide (LDHs)-based adsorbent (Fe₃O₄@LDHs/PCA). This adsorbent was synthesized by intercalating a copolymer (PCA), formed from itaconic acid (IA) and β-cyclodextrin (β-CD), into the interlayers of the LDHs, achieving efficient removal of organic dyes from wastewater. Then, the intercalation structure and abundant functional groups of the adsorbent were analyzed by scanning electron microscopy (SEM), Fourier transmission infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). Subsequently, the adsorption of Fe₃O₄@LDHs/PCA on Congo red (CR) and methylene blue (MB) conformed to the pseudo-second order and Langmuir models, in which the theoretical maximum adsorption capacities were 493.45 ± 24.67 mg/g and 423.87 ± 21.19 mg/g, respectively. Afterwards, the response surface methodology was used to optimize the adsorption process and to obtain a theoretical formula for the maximum adsorption capacity. In addition, the demonstrated feasibility of the adsorbent for industrial applications was confirmed by real water sample experiments, recycle experiments and column adsorption experiments. Moreover, adsorption experiments with the binary systems of CR-Cu²⁺ and MB-Cr₂O₇^2- identified that Fe₃O₄@LDHs/PCA could treat both dyes and heavy metals within a complex environment. Finally, FT-IR and X-ray photoelectron spectroscopy (XPS) were used to analyze the adsorption behavior and adsorption mechanism of Fe₃O₄@LDHs/PCA on dye molecules. In summary, the prepared Fe₃O₄@LDHs/PCA was expected to be an emerging adsorbent for the elimination of mixed dyes from wastewater.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138519"},"PeriodicalIF":5.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218602","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":"Modeling study of Escherichia coli adsorption on α-Al₂O₃ within plasmonic biosensing applications","authors":"Jabir Hakami ,&nbsp;Abdelhak Dhibi ,&nbsp;Chaker Briki ,&nbsp;Nordin Felidj ,&nbsp;Nadia Djaker","doi":"10.1016/j.colsurfa.2025.138507","DOIUrl":"10.1016/j.colsurfa.2025.138507","url":null,"abstract":"<div><div>This study investigated the adsorption behaviour of Escherichia coli on α-Al₂O₃ nanoparticles using statistical physics-based sorption models. Experimental isotherms from 20 to 35 °C were analyzed, yielding receptor site density (Nm) decreasing from 943.11244 mg/g at 20 °C to 593.76911 mg/g at 35 °C, and the number of adsorbed molecules per site (n) rising from 0.50058 to 1.08, with adsorption energy (ΔE) ranging from 2.26 to 5.62 kJ·mol⁻¹ , confirming physisorption. The statistical models outperformed the Langmuir model in fitting the data. Simultaneously, theoretical LSPR properties of α-Al₂O₃, Au@α-Al₂O₃, and α-Al₂O₃@Au@α-Al₂O₃ nanostructures were evaluated using Mie theory, identifying the α-Al₂O₃@Au@α-Al₂O₃ configuration with the highest refractive index sensitivity for low-concentration E. coli detection. This study provides deeper insights into the interactive dynamics of <em>E. coli</em> with SPR-based biosensors and establishes a novel framework for developing efficient biosensing platforms.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138507"},"PeriodicalIF":5.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218530","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":"Fabrication of antireflective coatings with self-cleaning function via in situ polymerization of Si-Ti modified hollow silica nanoparticle mixed sol","authors":"Zhenke Fan,&nbsp;Yong Zheng,&nbsp;Yuze Du,&nbsp;Xi Zhang,&nbsp;Yuqi Huang,&nbsp;Yufan Li,&nbsp;Shiqing Yu","doi":"10.1016/j.colsurfa.2025.138503","DOIUrl":"10.1016/j.colsurfa.2025.138503","url":null,"abstract":"<div><div>This study fabricated single-layer antireflective coatings (ARCs) employing a Si-Ti modified hollow silica nanoparticle (HSN) sol with self-cleaning function via in situ polymerization. Both shell-like and chain-like SiO₂–TiO₂ composites were directly synthesized in an alkali-catalyzed hollow SiO₂ sol through acid catalysis, which endowed the coating with suitable hardness while maintaining higher transmittance, thereby improving its overall performance. The influence of varying Si-Ti precursor doping ratios on the surface morphology, structure, optical performance, mechanical strength, and wettability of the coatings was investigated. The resulting coatings exhibited superhydrophilic properties, with a minimum water contact angle (WCA) below 5°. At an optimal doping concentration of 15 wt%, the coating achieved a hardness of 3 H and a solar-weighted transmittance (T_sw) exceeding 95.49 % across the wavelength range of 380–1100 nm, markedly surpassing that of the K9 glass (T_sw = 91.70 %). At this doping level, the self-cleaning capability, antifogging performance, and environmental durability of the coating were further analyzed. The coating reached a self-cleaning efficiency of 95.93 % and a slight decrease of 0.03 % in T_sw. After steam condensation experiment (sample placed above deionized water at 90 ℃ for 1 min), the haze value remained below 2 %. After 30 days of damp testing (80 % RH at 25 ℃), the reduction in T_sw was only 0.07 %. After 100 thermal cycles (−20 ℃/30 %RH ↔ 100 ℃/30 %RH, each condition held for 30 min), T_sw decreased by 0.3 %.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138503"},"PeriodicalIF":5.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218621","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":"Water-stable multifunctional Zn(II)-organic framework for highly selective detection of Fe3 + ions and NFT/NFZ antibiotics, and effectively catalyzing CO2 into cyclic carbonates","authors":"Xiao-Shuai Ma ,&nbsp;Yu-Jie Wang ,&nbsp;Qing Dong ,&nbsp;Wen-Qi Jin ,&nbsp;Huan Zhang ,&nbsp;Peng Li ,&nbsp;Wei Gao ,&nbsp;Ji-Yang Li ,&nbsp;Xiu-Mei Zhang","doi":"10.1016/j.colsurfa.2025.138495","DOIUrl":"10.1016/j.colsurfa.2025.138495","url":null,"abstract":"<div><div>Metal-organic framework (MOF) materials have many fascinating applications such as fluorescence sensing and catalyzing CO₂ cycloaddition reaction. In the work, a new MOF [Zn₂(L)(DMA)₂] (Zn-MOF-<strong>1</strong>) was successfully constructed through the self-assembly of Zn²⁺ ions and organic ligand 4,4′-di(3,5-dicarboylphenoxy)biphenyl (H₄L) under solvothermal conditions. Zn-MOF-<strong>1</strong> displayed a three-dimensional framework in which the tetranuclear [Zn₄((COO)₈] clusters were cross-linked by L^4- ligands, forming (4,4,8)-connected nets with the point symbol of (4⁴·6²)(4⁴·6²)(4¹³·6¹¹·8⁴). Interestingly, Zn-MOF-<strong>1</strong> was confirmed to possess high thermal stability and outstanding chemical stability in pH = 2–12 aqueous phase as well as in organic solvents. What’s more, Zn-MOF-<strong>1</strong> also exhibited excellent fluorescence emissions and could be used to detect Fe³⁺ ions and nitrofuran antibiotics (nitrofurantoin (NFT) and nitrofurazone (NFZ)) in aqueous solutions via quenching fluorescence effects. Moreover, the fluorescence quenching effects demonstrated high selectivity, short response time and good recyclability. Meanwhile, the fabricated Zn-MOF-<strong>1</strong>/PVDF (poly(vinylidene fluoride)) film demonstrates a rapid visual fluorescence response to Fe³⁺, NFT and NFZ in water. In addition, the activated Zn-MOF-<strong>1</strong> (Zn-MOF-<strong>1a</strong>) possessed abundant exposed Zn²⁺ sites as Lewis acid, which could promote the fixation of CO₂ with various epoxides to form cyclic carbonates under solvent-free and mild conditions (1 atm of CO₂, 12 h, 60 °C). Besides, Zn-MOF-<strong>1a</strong> also exhibited excellent recyclability for at least five cycles without an appreciable loss in catalytic efficiency. The possible mechanisms of fluorescence quenching and the conversion of CO₂ to cyclic carbonates were discussed in detail. The experimental results suggested that Zn-MOF-<strong>1</strong> could be utilized as a multifunctional material for fluorescence sensing and CO₂ conversion in the field of environmental protection.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138495"},"PeriodicalIF":5.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218622","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":"High-strength and controllable thermal degrading hydrogel for temporary plugging in ultra-high-temperature reservoirs","authors":"Yuhui Yang ,&nbsp;Haiming Fan ,&nbsp;Juncheng Su ,&nbsp;Zhiyi Wei ,&nbsp;Chuyu Kang ,&nbsp;Zhuozhuang Liu ,&nbsp;Jie Geng","doi":"10.1016/j.colsurfa.2025.138493","DOIUrl":"10.1016/j.colsurfa.2025.138493","url":null,"abstract":"<div><div>The efficacy of temporary plugging and diverting fracturing techniques critically depends on the performance of temporary plugging agents. However, conventional gel-based temporary plugging agents are typically limited to application temperatures below 160°C. This study developed a gel-based temporary plugging agent that exhibits high strength and tunable degradation performance at 180°C. The agent is formed in situ through free-radical polymerization of acrylamide and 2-acrylamide-2-methylpropane sulfonic acid(AMPS), using triallylamine as the crosslinker. The effects of monomer concentration, crosslinker content, AMPS ratio, and salinity on gel strength and degradation time were systematically investigated. Additionally, the gel's plugging performance was assessed. Its degradation mechanism was elucidated through SEM, FT-IR, and XPS analyses. Results show that when the gelling solution is prepared using deionized water, the gel achieves high strength(G’﹥400 Pa), with degradation time adjustable between 20–140 h by adjusting formulation parameters. In high-salinity environments (NaCl ≤100,000 mg·L⁻¹ and CaCl₂ &lt;20,000 mg·L⁻¹), the system maintained excellent gel strength and degradation performance. In fractures with a width of 1 mm, the gel achieved a pressure gradient of 51.6 MPa/m. The degradation solution exhibits low viscosity and negligible residue. Passage of the degradation fluid through the fractures resulted in a differential pressure of only 0.01 MPa. The degradation occurs in two stages: rapid hydrolysis of amide groups followed by chain scission, leading to molecular fragmentation and conversion into a low-viscosity liquid. This study extends the applicable temperature limit of gel-based temporary plugging agents, providing a useful reference for advancing temporary plugging and diverting fracturing technologies in ultra-high-temperature reservoirs.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138493"},"PeriodicalIF":5.4,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218605","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":"A composite oil/water separating material integrating switchable superhydrophobicity/superhydrophilicity with tunable pore size","authors":"Yuxian Li,&nbsp;Ying Qiu,&nbsp;Chenghe Sun,&nbsp;Min Yang,&nbsp;Ying Zhang,&nbsp;Lina Ma","doi":"10.1016/j.colsurfa.2025.138492","DOIUrl":"10.1016/j.colsurfa.2025.138492","url":null,"abstract":"<div><div>Recently, applying superwetting materials in separating oil/water mixtures has attracted considerable attention. Generally, effective separation of emulsions requires materials with small pore size to match emulsion size. Regrettably, when applied to separate immiscible oil/water mixtures, such materials would compromise flux performance. Herein, a composite separation material composed of a pH-responsive metal mesh and a superlyophilic shape memory polymer (SMP) sponge was designed. This separation material exhibits tunability in both pore size and surface wettability. The copper mesh demonstrates switchable superhydrophobicity/superhydrophilicity responsive to water pH, which offers selective removal of water or oil. More importantly, the SMP sponge offers dynamic control over pore size ranging from 895 μm to 450 nm owing to its shape memory capability. This allows highly efficient separation of both immiscible oil/water mixtures and emulsion by tailoring the pore size accordingly. The material can avoid the above-mentioned problem about the flux sacrifice. This work reports a new oil/water separation material with adjustability in both surface wettability and pore size, which can not only realize selective oil/water separation, but also provide distinct pore size for immiscible oil/water mixtures and emulsion, respectively. Given such advantages, the strategy advanced here may provide some fresh ideas for designing advanced oil/water separating materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"728 ","pages":"Article 138492"},"PeriodicalIF":5.4,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145218638","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}