Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献_第3页

In-situ generation of gas bubbles in porous gel spheres for multiphase catalysis 多相催化多孔凝胶球中气泡的原位生成

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-01-30 DOI: 10.1016/j.colsurfa.2026.139768

Haifeng Wang , Zhengsong Hu , Jie Xu , Chaoyang Li , Aokun Lin , Kunkun Zhu , Li Yu , Guanxiang Ma , Yuwen Liu , Haifeng Bao

{"title":"In-situ generation of gas bubbles in porous gel spheres for multiphase catalysis","authors":"Haifeng Wang , Zhengsong Hu , Jie Xu , Chaoyang Li , Aokun Lin , Kunkun Zhu , Li Yu , Guanxiang Ma , Yuwen Liu , Haifeng Bao","doi":"10.1016/j.colsurfa.2026.139768","DOIUrl":"10.1016/j.colsurfa.2026.139768","url":null,"abstract":"<div><div>Capturing gas bubbles in liquid is vital for the gas-liquid-solid (GLS) three-phase reactions due to the limited gas solubility. Constructing the special porous skeleton for bubble accommodation opens an opportunity to drag bubbles in liquid. Herein, mm-sized Pd-anchored cellulose/agarose (PCA) spheres with a highly porous architecture have been fabricated using a liquid nitrogen-freezing method. PCA particles could act as gas carrier to accommodate a variety of gas bubbles in liquid, including H<sub>2</sub>, O<sub>2</sub>, air, and CO<sub>2</sub> via an in-situ nucleation route. Moreover, these PCA beads enabled efficient multiphase catalysis as demonstrated by cascade reduction of a series of substances, such as aldehydes, nitroarenes, and alkenes. Their catalytic activities remarkably surpassed Pd-deposited solid glass spheres (PG) and sole Pd nanoparticles, manifesting the important role of their porous texture in gas harvesting and storage. A gas (H<sub>2</sub>) utilization of 98.0 % was attained for multiphase reaction over PCA beads. During multiphase reaction process, a controllable motion of PCA spheres was achieved via gas reservation or consumption. This work provides a profound inspiration for bubble arresting and stabilization toward regulable movement and multiphase processes.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139768"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076671","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}

引用次数: 0

Self-assembly of tripeptides and anticancer drug into nanostructures via synergistic non-covalent interactions for enhanced photodynamic therapy 通过协同非共价相互作用将三肽和抗癌药物自组装成纳米结构用于增强光动力治疗

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-01-31 DOI: 10.1016/j.colsurfa.2026.139788

Maryam Shabbir , Mussarat Tasleem , Lina Lee , Mohamad Akbar Ali , Maria Atiq , Mohamed Ettabib , Mostafa Khair , Dalaver H. Anjum , Manzar Abbas

{"title":"Self-assembly of tripeptides and anticancer drug into nanostructures via synergistic non-covalent interactions for enhanced photodynamic therapy","authors":"Maryam Shabbir , Mussarat Tasleem , Lina Lee , Mohamad Akbar Ali , Maria Atiq , Mohamed Ettabib , Mostafa Khair , Dalaver H. Anjum , Manzar Abbas","doi":"10.1016/j.colsurfa.2026.139788","DOIUrl":"10.1016/j.colsurfa.2026.139788","url":null,"abstract":"<div><div>Among anticancer modalities, photodynamic therapy (PDT) using self-assembled nanomaterials has emerged as a promising non-invasive approach for cancer treatment. However, poor stability, biocompatibility, and a lack of structure-function relationship are real challenges and self-assembled peptide nanoformulations offer an effective strategy to overcome these limitations. In this study, we report the development of peptides-modulated self-assembled nanoparticles of anticancer drug chlorin e6 (Ce-6) and two tripeptides (Ac-IFH-NH<sub>2</sub>, NH<sub>2</sub>-IFH-COOH) through synergistic effects of non-covalent interactions. The tripeptides act as structural modulators; molecular simulations reveal that electrostatic interactions and π–π stacking are key factors in governing the assembly process. The resulting nanostructures display H-type aggregation, confirming strong interactions between the tripeptides and drug molecules. Compared with free Ce-6, the self-assembled nanoparticles exhibit significantly enhanced photodynamic activity upon light activation, enabling selective cancer cell death. This self-assembly strategy provides a practical and versatile platform to enhance anticancer efficacy and paves the way for developing advanced therapeutics for targeted cancer therapy.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139788"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170913","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}

引用次数: 0

Engineering fragmented MXene-derived localized conductive networks in multifunctional cellulose composite aerogel absorbers 多功能纤维素复合气凝胶吸收剂的工程碎片化mxene衍生的局部导电网络

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-01-31 DOI: 10.1016/j.colsurfa.2026.139805

Fangxin Wan , Luyao Ding , Wei Chen , Kejie Chen , Tianyi Hang , Yiming Chen , Shaohua Jiang , Qing Ouyang , Shiju E , Jiajia Zheng

{"title":"Engineering fragmented MXene-derived localized conductive networks in multifunctional cellulose composite aerogel absorbers","authors":"Fangxin Wan , Luyao Ding , Wei Chen , Kejie Chen , Tianyi Hang , Yiming Chen , Shaohua Jiang , Qing Ouyang , Shiju E , Jiajia Zheng","doi":"10.1016/j.colsurfa.2026.139805","DOIUrl":"10.1016/j.colsurfa.2026.139805","url":null,"abstract":"<div><div>The advancement of modern science and technology has significantly facilitated daily life and societal operations, yet simultaneously contributes to increasing electromagnetic pollution. Cellulose aerogels have shown broad application prospects for electromagnetic wave absorption (EMWA) due to their low density, high porosity, and adjustable structure. In this work, we first obtained fragmented MXene by ultrasonic treatment of flake MXene, and combined it with carboxymethyl cellulose (CMC) to prepare a functional cellulose-based composite aerogel absorber via a straightforward freeze-drying technology. Thanks to the rich surface functional groups of MXene fragments, they could be efficiently attached to the surface of the aerogel skeleton, thus giving the composite aerogel excellent EMWA performance. At an ultrathin matching thickness of 1.52 mm, the absorber achieved highly efficient microwave attenuation with minimum reflection loss of −49.3 dB and effective absorption bandwidth of 4.89 GHz. In addition, the unique porous structure of the composite aerogel endowed it with exceptional thermal insulation and sound absorption capabilities. This work presents a simple and sustainable strategy to develop multifunctional cellulose composite materials for a variety of application scenarios.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139805"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170965","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}

引用次数: 0

Emulsion and interfacial properties of blended potato–lupin protein systems 马铃薯-罗苹蛋白混合体系的乳化和界面特性

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-01-26 DOI: 10.1016/j.colsurfa.2026.139714

Anna Maria Tschigg , Maike Bleiss , Theresia Heiden-Hecht , Susanne Gola , Stephanie Bader-Mittermaier , Peter Eisner

{"title":"Emulsion and interfacial properties of blended potato–lupin protein systems","authors":"Anna Maria Tschigg , Maike Bleiss , Theresia Heiden-Hecht , Susanne Gola , Stephanie Bader-Mittermaier , Peter Eisner","doi":"10.1016/j.colsurfa.2026.139714","DOIUrl":"10.1016/j.colsurfa.2026.139714","url":null,"abstract":"<div><div>The demand for plant-based proteins in emulsified foods has grown, necessitating deeper insights into how individual components and blends of plant proteins behave in oil–water systems. We examined potato (PPI) and lupin protein isolate (LPI), alone and in blends, at varying concentrations (1.0 %, 0.5 %, 0.1 %, 0.01 %) in oil-in-water emulsions produced by microfluidisation. Emulsions were analysed for droplet size distribution, and the protein content and protein composition of the aqueous phases were determined. Additionally, interfacial tension (IFT) was measured using pendant drop tensiometry. At 1.0 % total protein concentration, PPI formed small droplets (dx(50) = 0.83 ± 0.05 µm), whereas LPI exhibited median particle sizes around 3.45 ± 1.95 µm. The trend reversed at 0.1 % protein concentration. Blended systems showed significant droplet aggregation. Pendant drop tensiometry indicated that PPI effectively lowered IFT (9.19 ± 0.07 mN/m at 1.0 % total protein after 120 min), although adequate protein concentrations were necessary for a rapid decrease. LPI reduced IFT more rapidly at lower concentrations but maintained a higher IFT after 120 min compared to PPI at 1.0 % (11.55 ± 0.52 mN/m). In blends, the strong tension-lowering effect of PPI dominated at higher protein concentrations, while LPI fractions reduced IFT more rapidly at lower concentrations, highlighting a concentration-dependent interaction. Protein composition analysis confirmed that key PPI fractions readily adsorbed at the interface, while blending promoted depletion of selected lupin fractions from the continuous phase. The findings suggest that combining potato and lupin proteins can be used to tune emulsion properties in a concentration- and blend-ratio-dependent manner, offering valuable insights for formulating plant-based emulsions.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139714"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170969","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}

引用次数: 0

Cationization of wool surfaces via chitosan-citric acid crosslinking: A metal-free strategy for charge-mediated dyeing and antimicrobial activity 通过壳聚糖-柠檬酸交联的羊毛表面阳离子化：一种电荷介导的无金属染色和抗菌活性策略

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-01-31 DOI: 10.1016/j.colsurfa.2026.139792

Fatim Ezahra Mesrar , Mohamed Jeddi , Mohammed Danouche , Omar Cherkaoui , Hamza Tachallait , Khalid Bougrin , Rachid Benhida

{"title":"Cationization of wool surfaces via chitosan-citric acid crosslinking: A metal-free strategy for charge-mediated dyeing and antimicrobial activity","authors":"Fatim Ezahra Mesrar , Mohamed Jeddi , Mohammed Danouche , Omar Cherkaoui , Hamza Tachallait , Khalid Bougrin , Rachid Benhida","doi":"10.1016/j.colsurfa.2026.139792","DOIUrl":"10.1016/j.colsurfa.2026.139792","url":null,"abstract":"<div><div>Natural dyeing of protein fibers remains limited by the weak affinity of wool for most plant-based chromophores, which often requires metallic mordants to achieve acceptable color strength and fastness. Although chitosan is widely applied directly onto wool as a biomordant to introduce cationic sites, its performance is constrained by the physical nature of the coating and does not provide the consistency needed for reliable metal-free dyeing. To address these limitations, this study investigates a chitosan-citric acid treatment that enables the formation of a crosslinked cationic network on wool fibers. Esterification reactions involving citric acid, chitosan, and accessible keratin functional groups lead to a chemically stabilized surface modification that maintains a positive charge over a broad pH range. FTIR, SEM-EDS, AFM, and ζ-potential measurements confirm the formation of new ester linkages and the presence of a uniform modified surface, with the isoelectric point shifting to around pH 10.1. This cationic character significantly improves the interaction of wool with the polyphenolic compounds of pomegranate peel extract, enabling metal-free dyeing with higher color strength and improved fastness. Kinetic and equilibrium data indicate a surface-controlled process on a heterogeneous surface, while the observed decrease in optical band-gap energy suggests strengthened charge-transfer interactions after grafting. In parallel, the treated fibers exhibit notable antibacterial activity, achieving complete inhibition of <em>Staphylococcus aureus</em> and a strong reduction of <em>Escherichia coli</em>.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139792"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171343","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}

引用次数: 0

Effect of lignin content in nano-cellulose on the performance of surfactant-stabilized fracturing foam 纳米纤维素中木质素含量对表面活性剂稳定压裂泡沫性能的影响

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-02-05 DOI: 10.1016/j.colsurfa.2026.139850

Sicheng Zhu , Jianwei Zhong , Zhaojian Feng , Yushi Cui , Chaoyan Xiao , Huan Yang , Xiaorong Yu , Gaoshen Su

{"title":"Effect of lignin content in nano-cellulose on the performance of surfactant-stabilized fracturing foam","authors":"Sicheng Zhu , Jianwei Zhong , Zhaojian Feng , Yushi Cui , Chaoyan Xiao , Huan Yang , Xiaorong Yu , Gaoshen Su","doi":"10.1016/j.colsurfa.2026.139850","DOIUrl":"10.1016/j.colsurfa.2026.139850","url":null,"abstract":"<div><div>The stability of fracturing foams at reservoir temperatures poses a significant challenge. This study explores the use of lignin-containing cellulose nanofibrils (<span>L</span>-CNF) as an eco-friendly stabilizer to tackle this issue. We compared the foam-stabilizing performance of <span>L</span>-CNF with varying lignin content against lignin-free cellulose nanofibrils (CNF) and a surfactant baseline. Key performance indicators, such as foam stability, rheological properties, and proppant-carrying capacity, were assessed. The findings revealed that <span>L</span>-CNF with optimal lignin content significantly improved foam stability. For example, at 90 °C (363.15 K), the drainage half-life of sodium dodecylbenzene sulfonate (SDBS) foam increased twelvefold with the addition of <span>L</span>-CNF. Additionally, the <span>L</span>-CNF-stabilized foam prevented proppant settling for over 15 h, demonstrating excellent sand-carrying capacity. Mechanistic analysis identified a multi-stage stabilization process: initially, <span>L</span>-CNF enhances foam viscosity during the drainage stage; subsequently, it forms a nano-scale network that impedes drainage in the mid-stage; and finally, it aggregates into a robust nanofiber network in the late stage, ensuring stability throughout the foam's lifecycle. These findings offer fundamental insights into the mechanisms and performance of <span>L</span>-CNF as a high-temperature stabilizer for environmentally friendly fracturing foams.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139850"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185431","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}

引用次数: 0

Determination of mangiferin via a smartphone-assisted fluorescence system with blue-emitting carbon quantum dots 智能手机辅助荧光系统蓝碳量子点测定芒果苷

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-02-10 DOI: 10.1016/j.colsurfa.2026.139930

Zhifeng Cai, Lingjie Hou, Qun Cai, Yaxuan Feng, Yiran Zhang, Yuqi Zhang

{"title":"Determination of mangiferin via a smartphone-assisted fluorescence system with blue-emitting carbon quantum dots","authors":"Zhifeng Cai, Lingjie Hou, Qun Cai, Yaxuan Feng, Yiran Zhang, Yuqi Zhang","doi":"10.1016/j.colsurfa.2026.139930","DOIUrl":"10.1016/j.colsurfa.2026.139930","url":null,"abstract":"<div><div>Mangiferin is beneficial to human health. However, excessive use can cause side effects. Herein, we fabricated a hydrothermal strategy for the development of blue-emissive fluorescence carbon quantum dots (BCQDs) for the measurement of mangiferin. An excellent fluorescence emission signal around 468.7 nm was observed at the excitation wavelength of 363.4 nm. Some amazing features for BCQDs could be observed, such as exceptional stability, radiation resistance, salt resistance, and water solubility. The BCQDs displayed a specific response for mangiferin, leading to fluorescence weakening in a linear range of 0.5–100 μM. And the detection limit was 0.061 μM. The fluorescence quenching mechanism was assigned to the inner filter effect. Furthermore, two different real samples were sensitively determined to mangiferin using this as-prepared BCQDs-based nanosensor, generating satisfactory results with recoveries of 94.8–104.8 %. Notably, the apparent color variation from blue to green in the presence of mangiferin suggested smartphone-based visual inspection, indicating emphatic potential for on-site sensing. Moreover, the BCQDs-based sensing system had exceptional greenness and blueness.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139930"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185428","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}

引用次数: 0

Recycle use of bio-oil from activation via impregnation of homologous biomass for second-round activation for enhancing mass yields and pore development of activated carbon 利用同源生物质浸渍活化后的生物油进行二次活化，提高活性炭的质量收率和孔隙发育

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-02-05 DOI: 10.1016/j.colsurfa.2026.139856

Xiao Cheng , Xin Zhong , Chao Li , Shu Zhang , Baoqiang Lv , Jianhong Zhu , Xun Hu

{"title":"Recycle use of bio-oil from activation via impregnation of homologous biomass for second-round activation for enhancing mass yields and pore development of activated carbon","authors":"Xiao Cheng , Xin Zhong , Chao Li , Shu Zhang , Baoqiang Lv , Jianhong Zhu , Xun Hu","doi":"10.1016/j.colsurfa.2026.139856","DOIUrl":"10.1016/j.colsurfa.2026.139856","url":null,"abstract":"<div><div>Bio-oil is one of the major products in activation of biomass, which could be a liquid waste if not properly recycled. Herein, we proposed a method for reuse of bio-oil as a feedstock for activation by impregnation of homologous bio-oil to walnut shell or rice husk, which were subjected to polymerization pretreatment before being activated with K<sub>2</sub>C<sub>2</sub>O<sub>4</sub> at 800 °C. The results showed that the addition of bio-oil could induce cross-linking reactions between organics in the bio-oil and nascent activated carbon (AC), enhancing yield of resulting AC (4 times of AC-shell from activation of walnut shell without loading bio-oil). The S<sub>BET</sub> was also much higher for AC-shell/oil (1277.0 versus 711.3 m<sup>2</sup>g<sup>−1</sup> for AC-shell) and more mesopores (5.3 % versus 1.2 %) and macropores were generated. Higher mass yields of AC (60.5 % versus 76.7 %) and higher S<sub>BET</sub> (615.4 versus 994.4 m<sup>2</sup>g<sup>−1</sup>) were also observed in the activation of rice husk impregnated with bio-oil. This occurred because the bio-oil contributed a wealth of extra aliphatic structures, which in turn intensified the cracking reactions in the subsequent activation process. Additionally, cross-interactions between bio-oil and nascent AC formed carbon-rich AC with more disordered graphitic structures, enhanced hydrophilicity, and increased capacity for adsorption of phenol. The bio-oil could also “paint” the AC to form a smooth surface.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139856"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185625","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}

引用次数: 0

Phytic acid–loaded Ce-based metal–organic frameworks enabling synergistic interfacial regulation for active/passive corrosion protection 植酸负载的铈基金属有机框架，可协同界面调节主动/被动腐蚀防护

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-02-06 DOI: 10.1016/j.colsurfa.2026.139873

Yun-Xi Jiang , Shu-Fei Yin , You-Lin Zhang , Pan Liu , Hao Li , Lian-Kui Wu , Fa-He Cao

{"title":"Phytic acid–loaded Ce-based metal–organic frameworks enabling synergistic interfacial regulation for active/passive corrosion protection","authors":"Yun-Xi Jiang , Shu-Fei Yin , You-Lin Zhang , Pan Liu , Hao Li , Lian-Kui Wu , Fa-He Cao","doi":"10.1016/j.colsurfa.2026.139873","DOIUrl":"10.1016/j.colsurfa.2026.139873","url":null,"abstract":"<div><div>Conventional epoxy coatings rely primarily on passive barrier effects and therefore lack the ability to regulate interfacial corrosion processes after local damage. Here, a physicochemically regulated active/passive epoxy coating is developed by incorporating a phytic acid–loaded cerium-based metal–organic framework (CeMOF-P) as a functional colloidal additive. Owing to the confinement and coordination effects of the CeMOF framework, phytic acid is stably immobilized and uniformly dispersed, resulting in improved coating compactness and interfacial adhesion. Electrochemical impedance spectroscopy shows that the CeMOF-P–modified coating exhibits markedly enhanced corrosion resistance and, more importantly, a characteristic non-monotonic impedance evolution with pronounced impedance recovery upon damage, indicating an interfacial regulation mechanism beyond passive shielding. Mechanistic analyses reveal that corrosion-triggered, coordinated release of Ce<sup>3+</sup>/Ce<sup>4+</sup> species and phytic acid leads to the in situ formation of a compact cerium–phosphate–rich interfacial film, which simultaneously suppresses anodic dissolution and cathodic reactions. These results demonstrate that Ce–P synergy enables continuous interfacial regulation rather than transient passivation, providing mechanistic insight into the role of coordination chemistry and colloidal confinement in governing interfacial electrochemical behavior and stability in protective coating systems.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139873"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185626","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}

引用次数: 0

Integrated polydopamine-mediated PB@BP nanohybrid coating on titanium implants for synergistic antibacterial, antioxidant, and pro-osteogenic functionalities 整合多多巴胺介导PB@BP纳米杂化涂层在钛植入体上的协同抗菌、抗氧化和促骨功能

IF 5.4 2区化学

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2026-05-20 Epub Date: 2026-02-04 DOI: 10.1016/j.colsurfa.2026.139834

Qilong Wu , Xin Wang , Zongyi Li , Ruofeng Yang , Yuli Fan , Jiaxuan Lyu , Jie Wang , Shaojie Wang , Yan Wei , Ziwei Liang , Weimo Han , Liqin Zhao , Di Huang

{"title":"Integrated polydopamine-mediated PB@BP nanohybrid coating on titanium implants for synergistic antibacterial, antioxidant, and pro-osteogenic functionalities","authors":"Qilong Wu , Xin Wang , Zongyi Li , Ruofeng Yang , Yuli Fan , Jiaxuan Lyu , Jie Wang , Shaojie Wang , Yan Wei , Ziwei Liang , Weimo Han , Liqin Zhao , Di Huang","doi":"10.1016/j.colsurfa.2026.139834","DOIUrl":"10.1016/j.colsurfa.2026.139834","url":null,"abstract":"<div><div>Titanium (Ti) implants face significant clinical challenges due to their biological inertness and susceptibility to peri-implant infections and oxidative stress. In this study, a multifunctional composite coating was engineered by immobilizing Prussian blue@black phosphorus (PB@BP) nanohybrids onto alkali-heat-treated titanium surfaces via a polydopamine (PDA) adhesive layer. The coating exhibited superior structural stability and improved hydrophilicity. Under 808 nm near-infrared (NIR) irradiation, it demonstrated power density-dependent photothermal antibacterial efficacy, reaching temperatures up to 59.6 °C. Specifically, the PDA/PB@BP + NIR group achieved remarkable inhibition rates of 99.76 ± 0.24 % against <em>Escherichia coli</em> and 99.27 ± 0.23 % against <em>Staphylococcus aureus</em>, effectively minimizing the risk of implant-associated infections. Furthermore, the coating promoted HUVECs migration, achieving a scratch healing rate of 70.57 % within 36 h. The PB@BP nanostructures functioned as potent nanozymes, effectively scavenging excessive reactive oxygen species (ROS) to protect cells from oxidative damage. Meanwhile, the sustained degradation of BP nanosheets provided a continuous supply of phosphate ions, which synergistically with the PDA layer, accelerated the differentiation and biomineralization of MC3T3-E1 cells. Collectively, the PDA/PB@BP composite coating orchestrates a bioactive microenvironment that integrates photothermal antibacterial, antioxidant, pro-angiogenic, and pro-osteogenic functionalities. This study provides a versatile strategy and a solid experimental foundation for the design of next-generation titanium-based implants with advanced regenerative and anti-infective capabilities.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139834"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185630","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}

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