Pub Date : 2026-02-02DOI: 10.1016/j.colsurfa.2026.139832
Wenbo Wu , Zutong Cui , Qing Li , Dongxue Ning , Xiujuan Liu , Bingbing Li , Zhiwei Liu , Jian Li , Tifeng Jiao
This study develops a novel polyvinyl alcohol/polyethylene oxide/polyhexamethylene biguanide hydrochloride/benzalkonium chloride (PVA/PEO/PHMB/BAC, designated POBC) electrospun nanofiber membrane with dual-antimicrobial synergy for advanced wound management. To address the inherent water solubility of PVA, glutaraldehyde vapor-phase crosslinking (POBC-crossing) was employed to enhance hydrophobicity and mechanical stability. The optimized membrane exhibited uniform fiber morphology (diameter: 170 nm) and significantly improved tensile strength (6 MPa post-crossing). FTIR and XRD analyses confirmed successful chemical crosslinking and amorphous structural characteristics. The dual antibacterial system showed a synergistic effect and exhibited good antibacterial activity against both Staphylococcus aureus and Escherichia coli. Biocompatibility was validated by high cell viability (>97 %) and low hemolysis rate (2.59 %). In vivo studies on full-thickness wounds in mice revealed accelerated healing, with POBC-crossing achieving near-complete closure by day 14. Histological analysis confirmed enhanced collagen deposition, granulation tissue formation, and neovascularization, coupled with reduced IL-6 expression. The multifunctional membrane integrates optimal breathability (WVTR: 1273 g·m-²·d-¹), antibacterial efficacy, and biocompatibility, demonstrating potential for clinical wound dressings.
{"title":"Self-assembled cross-linking composite electrospun nanofiber membranes: Synergistic antibacterial action and enhanced wound healing performance","authors":"Wenbo Wu , Zutong Cui , Qing Li , Dongxue Ning , Xiujuan Liu , Bingbing Li , Zhiwei Liu , Jian Li , Tifeng Jiao","doi":"10.1016/j.colsurfa.2026.139832","DOIUrl":"10.1016/j.colsurfa.2026.139832","url":null,"abstract":"<div><div>This study develops a novel polyvinyl alcohol/polyethylene oxide/polyhexamethylene biguanide hydrochloride/benzalkonium chloride (PVA/PEO/PHMB/BAC, designated POBC) electrospun nanofiber membrane with dual-antimicrobial synergy for advanced wound management. To address the inherent water solubility of PVA, glutaraldehyde vapor-phase crosslinking (POBC-crossing) was employed to enhance hydrophobicity and mechanical stability. The optimized membrane exhibited uniform fiber morphology (diameter: 170 nm) and significantly improved tensile strength (6 MPa post-crossing). FTIR and XRD analyses confirmed successful chemical crosslinking and amorphous structural characteristics. The dual antibacterial system showed a synergistic effect and exhibited good antibacterial activity against both <em>Staphylococcus aureus</em> and <em>Escherichia coli.</em> Biocompatibility was validated by high cell viability (>97 %) and low hemolysis rate (2.59 %). In vivo studies on full-thickness wounds in mice revealed accelerated healing, with POBC-crossing achieving near-complete closure by day 14. Histological analysis confirmed enhanced collagen deposition, granulation tissue formation, and neovascularization, coupled with reduced IL-6 expression. The multifunctional membrane integrates optimal breathability (WVTR: 1273 g·m<sup>-</sup>²·d<sup>-</sup>¹), antibacterial efficacy, and biocompatibility, demonstrating potential for clinical wound dressings.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139832"},"PeriodicalIF":5.4,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171338","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}
Superhydrophobic concrete demonstrates exceptional promise for self-cleaning and corrosion-resistant applications owing to its superior water repellency. Despite significant advances, superhydrophobic performance failure persists due to micro/nano structural damage and thermal degradation of low-surface-energy substances. Herein, we developed a self-healing integral superhydrophobic concrete (SISC). When exposed to a high-temperature environment, internal low-surface-energy substances within SISC decompose and form enriched spherical nanoparticles on the surface. This process not only preserves its superhydrophobicity but significantly enhances it, endowing the SISC with unprecedented repellency towards hot water and oil. Remarkably, even if SISC loses its superhydrophobicity due to the complete decomposition of its surface substances, SISC can still achieve autonomous recovery of its superhydrophobic function through reconfiguration and modification of low-surface-energy substances triggered by heating-induced decomposition and migration of internal components. Moreover, the integral superhydrophobicity of SISC fundamentally overcomes the intrinsic limitation of conventional coatings, which suffer from superhydrophobicity failure due to microstructural collapse caused by mechanical abrasion. This self-healing integrated superhydrophobic strategy establishes a new paradigm for fabricating durable and mechanically robust superhydrophobic concrete.
{"title":"Thermally enhanced self-healing integral superhydrophobic concrete","authors":"Mingzhong Wei , Qi Zhang , Yuzhen Zhao , Jiandong Liang , Jiale Ma , Song Ding , Yanni Chen , Sirui Xu , Wenxin Wang , Haiyang Zhan , Qi Chen","doi":"10.1016/j.colsurfa.2026.139813","DOIUrl":"10.1016/j.colsurfa.2026.139813","url":null,"abstract":"<div><div>Superhydrophobic concrete demonstrates exceptional promise for self-cleaning and corrosion-resistant applications owing to its superior water repellency. Despite significant advances, superhydrophobic performance failure persists due to micro/nano structural damage and thermal degradation of low-surface-energy substances. Herein, we developed a self-healing integral superhydrophobic concrete (SISC). When exposed to a high-temperature environment, internal low-surface-energy substances within SISC decompose and form enriched spherical nanoparticles on the surface. This process not only preserves its superhydrophobicity but significantly enhances it, endowing the SISC with unprecedented repellency towards hot water and oil. Remarkably, even if SISC loses its superhydrophobicity due to the complete decomposition of its surface substances, SISC can still achieve autonomous recovery of its superhydrophobic function through reconfiguration and modification of low-surface-energy substances triggered by heating-induced decomposition and migration of internal components. Moreover, the integral superhydrophobicity of SISC fundamentally overcomes the intrinsic limitation of conventional coatings, which suffer from superhydrophobicity failure due to microstructural collapse caused by mechanical abrasion. This self-healing integrated superhydrophobic strategy establishes a new paradigm for fabricating durable and mechanically robust superhydrophobic concrete.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139813"},"PeriodicalIF":5.4,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171337","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}
Pub Date : 2026-02-02DOI: 10.1016/j.colsurfa.2026.139829
Yongkang Guo , Qian Feng , Zhuoxuan Li , Lilong Nie , Agoston Restas , Kaiyuan Li , Linlin Yi
Compressed air foam offers a promising solution to address the current fire risks on building facades. This study investigates the effects of gas-liquid ratio and spray angle on the spreading and adhesion properties of compressed air foam on facades. The results indicate that as the gas-liquid ratio increases from 4:1–15:1, the foam spreading rate decreases by 3 times, while the foam layer thickness increases by 2.4 times. When the spray angle increases from 0° to 90°, the spreading rate decreases by 50 %, while the foam layer thickness increases by 50 %. The foam spreading rate on vertical facades is approximately 5.1 times that on horizontal liquid surfaces. An increase in the gas-liquid ratio results in a more uniform foam structure and up to 1.4 times increase in apparent viscosity. A reduction in the spray angle intensified gravitational shear and disrupted the foam structure, which results in a decrease in apparent viscosity. The gas-liquid ratio and spray angle affect the apparent viscosity of foam by modulating its intrinsic physical properties and externally applied forces, thereby affecting the foam spreading and adhesion properties. Predictive models are developed to estimate the spreading rate () and foam layer thickness () in relation to the apparent viscosity (), which indicate and .The model predictions providing a theoretical basis for designing the compressed air foam suppression systems for high-rise building facades.
{"title":"Spreading and adhesion properties of compressed air foam on vertical facades: Effects of gas-liquid ratio and spray angle","authors":"Yongkang Guo , Qian Feng , Zhuoxuan Li , Lilong Nie , Agoston Restas , Kaiyuan Li , Linlin Yi","doi":"10.1016/j.colsurfa.2026.139829","DOIUrl":"10.1016/j.colsurfa.2026.139829","url":null,"abstract":"<div><div>Compressed air foam offers a promising solution to address the current fire risks on building facades. This study investigates the effects of gas-liquid ratio and spray angle on the spreading and adhesion properties of compressed air foam on facades. The results indicate that as the gas-liquid ratio increases from 4:1–15:1, the foam spreading rate decreases by 3 times, while the foam layer thickness increases by 2.4 times. When the spray angle increases from 0° to 90°, the spreading rate decreases by 50 %, while the foam layer thickness increases by 50 %. The foam spreading rate on vertical facades is approximately 5.1 times that on horizontal liquid surfaces. An increase in the gas-liquid ratio results in a more uniform foam structure and up to 1.4 times increase in apparent viscosity. A reduction in the spray angle intensified gravitational shear and disrupted the foam structure, which results in a decrease in apparent viscosity. The gas-liquid ratio and spray angle affect the apparent viscosity of foam by modulating its intrinsic physical properties and externally applied forces, thereby affecting the foam spreading and adhesion properties. Predictive models are developed to estimate the spreading rate (<span><math><msub><mrow><mi>V</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span>) and foam layer thickness (<span><math><msub><mrow><mi>H</mi></mrow><mrow><mi>f</mi></mrow></msub></math></span>) in relation to the apparent viscosity (<span><math><mi>η</mi></math></span>), which indicate <span><math><mrow><msub><mrow><mi>V</mi></mrow><mrow><mi>s</mi></mrow></msub><mo>∝</mo><mo>−</mo><mn>5.23</mn><mi>η</mi></mrow></math></span> and <span><math><mrow><msub><mrow><mi>H</mi></mrow><mrow><mi>f</mi></mrow></msub><mo>∝</mo><msup><mrow><mi>e</mi></mrow><mrow><mn>0.48</mn><mi>η</mi></mrow></msup></mrow></math></span>.The model predictions providing a theoretical basis for designing the compressed air foam suppression systems for high-rise building facades.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139829"},"PeriodicalIF":5.4,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185485","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}
Pub Date : 2026-02-02DOI: 10.1016/j.colsurfa.2026.139815
Peiling Yuan , Junjun Li , Tatiana Grigorievna Cherkasova , Lu Li
Precious or rare-earth metallic nanocatalysts for antibiotic degradation always suffer from high cost. Metal leaching in catalysis also induces secondary pollution and sharply decreased efficiency. Herein, nitrogen-modified carbon-coated iron manganese (FeMn@G) nanoparticles with tailored nanostructures (23.6–38.2 nm for core and 3.11–1.27 nm for shell) were fabricated by changing the mass ratios of iron oxide/manganese oxide/graphite via pulsed laser ablation. Porous FeMn@G-modified biochars (FeMn@G/Bs) were synthesized through crosslinking of FeMn@G with straw-prepared biochars pyrolyzed at 300 °C, 450 °C and 600 °C. Tetracycline degradation via activating peroxymonosulfate (PMS) were studied under conditions including FeMn@G/B species and dosage, PMS and initial tetracycline concentrations, solution pH, and coexisting anions. Catalytic k value of 0.455 min−1 (98.5 % removal ratio, 50.6–14.2 and 4.2–2.7 times higher than biochars and FeMn@G, respectively) and excellent recycling (10.9 % of remained tetracycline after 10 cycles) were achieved. FeMn@G/Bs presented low metal leakages (10.1–3.5 μg/L Mn and 12.4–3.6 μg/L Fe during 10 cycles) and promising degradation universality for multiple antibiotics. Spectroscopic analysis unveiled the electron transfer capacity of FeMn@G/Bs through a Fe/Mn redox pair. The generation of 1O2 and electron transfer pathway dominated the main mechanisms. This finding opened up a new insight for integrating composite catalysts to degrade antibiotics with enhanced efficiency and stability.
{"title":"Assembly of carbon-coated FeMn nanoparticles with biochars for efficient degradation of tetracycline via activating peroxymonosulfate","authors":"Peiling Yuan , Junjun Li , Tatiana Grigorievna Cherkasova , Lu Li","doi":"10.1016/j.colsurfa.2026.139815","DOIUrl":"10.1016/j.colsurfa.2026.139815","url":null,"abstract":"<div><div>Precious or rare-earth metallic nanocatalysts for antibiotic degradation always suffer from high cost. Metal leaching in catalysis also induces secondary pollution and sharply decreased efficiency. Herein, nitrogen-modified carbon-coated iron manganese (FeMn@G) nanoparticles with tailored nanostructures (23.6–38.2 nm for core and 3.11–1.27 nm for shell) were fabricated by changing the mass ratios of iron oxide/manganese oxide/graphite via pulsed laser ablation. Porous FeMn@G-modified biochars (FeMn@G/Bs) were synthesized through crosslinking of FeMn@G with straw-prepared biochars pyrolyzed at 300 °C, 450 °C and 600 °C. Tetracycline degradation via activating peroxymonosulfate (PMS) were studied under conditions including FeMn@G/B species and dosage, PMS and initial tetracycline concentrations, solution pH, and coexisting anions. Catalytic <em>k</em> value of 0.455 min<sup>−1</sup> (98.5 % removal ratio, 50.6–14.2 and 4.2–2.7 times higher than biochars and FeMn@G, respectively) and excellent recycling (10.9 % of remained tetracycline after 10 cycles) were achieved. FeMn@G/Bs presented low metal leakages (10.1–3.5 μg/L Mn and 12.4–3.6 μg/L Fe during 10 cycles) and promising degradation universality for multiple antibiotics. Spectroscopic analysis unveiled the electron transfer capacity of FeMn@G/Bs through a Fe/Mn redox pair. The generation of <sup>1</sup>O<sub>2</sub> and electron transfer pathway dominated the main mechanisms. This finding opened up a new insight for integrating composite catalysts to degrade antibiotics with enhanced efficiency and stability.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139815"},"PeriodicalIF":5.4,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170910","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}
Pub Date : 2026-02-02DOI: 10.1016/j.colsurfa.2026.139816
Chenyan Hu , Jiali Wang , Suxin Wu , Lianguo Chen
Hydrothermal carbonization (HTC) has the advantage for valorizing wet biomass, and the produced hydrochar (HC) is a promising carbon material for energy and environmental applications. Herein, the renewable and abundant microalgae including three species (Microcystis, Chlorella, and Euglena) were used as feedstock to synthesize algal HC in phosphoric acid (H3PO4) solution and water. Physicochemical characterizations revealed that H3PO4-synthesized HC had higher specific surface area and carbonization/graphitization degree, as well as richer surface oxygenated functional groups (OFGs) relative to its water-synthesized peers, due to the acid catalyzed HTC process. By virtue of these merits, H3PO4-syntheized HC absorbed more light and transported photogenerated chargers faster. When directly working as photocatalyst, water-synthesized algal HC moderately removed the prevalent pollutant norfloxacin (NOR) in 120 min, while significantly enhanced adsorption and degradation were attained by H3PO4-syntheized HC, reaching 82.1 %, 79.2 %, and 78.5 % removal from three species algae. Especially, non-adjusted pH was more suitable for NOR degradation by algal HC, which was slightly affected by co-existing cations (Ca2 +, Mg2+, Na+, K+), but inhibited by anions and humic acid. Trapping tests and electron paramagnetic resonance identified the main contribution of superoxide radicals to NOR degradation. Meanwhile, the surface OFGs of algal HC were conducive to its reactive species generation, as confirmed by further oxidizing its surface by H2O2. Based on detected intermediates, NOR degradation pathways were deduced, and its high toxicity towards zebrafish embryos were mitigated substantially by eco-friendly algal HC photocatalyst. This study advances the synthesis of algal HC and firstly expands its application in photocatalysis.
{"title":"Phosphoric acid- and water-synthesized microalgea hydrochar for photocatalytic degradation of norfloxacin","authors":"Chenyan Hu , Jiali Wang , Suxin Wu , Lianguo Chen","doi":"10.1016/j.colsurfa.2026.139816","DOIUrl":"10.1016/j.colsurfa.2026.139816","url":null,"abstract":"<div><div>Hydrothermal carbonization (HTC) has the advantage for valorizing wet biomass, and the produced hydrochar (HC) is a promising carbon material for energy and environmental applications. Herein, the renewable and abundant microalgae including three species (<em>Microcystis</em>, <em>Chlorella</em>, and <em>Euglena</em>) were used as feedstock to synthesize algal HC in phosphoric acid (H<sub>3</sub>PO<sub>4</sub>) solution and water. Physicochemical characterizations revealed that H<sub>3</sub>PO<sub>4</sub>-synthesized HC had higher specific surface area and carbonization/graphitization degree, as well as richer surface oxygenated functional groups (OFGs) relative to its water-synthesized peers, due to the acid catalyzed HTC process. By virtue of these merits, H<sub>3</sub>PO<sub>4</sub>-syntheized HC absorbed more light and transported photogenerated chargers faster. When directly working as photocatalyst, water-synthesized algal HC moderately removed the prevalent pollutant norfloxacin (NOR) in 120 min, while significantly enhanced adsorption and degradation were attained by H<sub>3</sub>PO<sub>4</sub>-syntheized HC, reaching 82.1 %, 79.2 %, and 78.5 % removal from three species algae. Especially, non-adjusted pH was more suitable for NOR degradation by algal HC, which was slightly affected by co-existing cations (Ca<sup>2 +</sup>, Mg<sup>2+</sup>, Na<sup>+</sup>, K<sup>+</sup>), but inhibited by anions and humic acid. Trapping tests and electron paramagnetic resonance identified the main contribution of superoxide radicals to NOR degradation. Meanwhile, the surface OFGs of algal HC were conducive to its reactive species generation, as confirmed by further oxidizing its surface by H<sub>2</sub>O<sub>2</sub>. Based on detected intermediates, NOR degradation pathways were deduced, and its high toxicity towards zebrafish embryos were mitigated substantially by eco-friendly algal HC photocatalyst. This study advances the synthesis of algal HC and firstly expands its application in photocatalysis.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139816"},"PeriodicalIF":5.4,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170934","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}
Pub Date : 2026-02-02DOI: 10.1016/j.colsurfa.2026.139819
Sheng Hu , Lingli Wang , Yu Liu
Particle assembly is a fascinating study in the fields of micromanipulation, such as artificial tissue and organ, photonic crystal synthesis, and superstructure material fabrication. Optoelectronic tweezers, as a flexible manipulation approach, could provide underlying potential to guide the target particles into a desired location. The secondary DEP effect plays an important role in particle-particle interaction to decide their structure and pattern. In this way, this paper proposes a flexible and straightforward dipole moment model to simulate the assembly of particles onto an induced light pattern. The commercial software COMSOL Multiphysics can efficiently solve the Laplace equation related to the electric field. It is important that the built-in particle tracing module enables the analysis of particle behaviors once the relevant forces have been determined. Thus, a circle ring light pattern, acting as a virtual electrode, can be used in the study of particle assembly with the advantages of no programming and good visualization. We can study a number of particles, ranging from three to ten, in this model and observe their specific assembly resulting from particle-particle interactions. The simulated results imply that particle numbers lead to unique three-dimensional structures. Compared to the symmetric assembly caused by a ring, the assemblies at the bottom wall can be characterized by square and triangular rings. This approach provides a new insight into exploring the particle assembly and their structures in optoelectronic tweezers. Furthermore, the specific pattern consisting of particles can act as a candidate for applications in photonic crystal filters and surface plasmon resonance.
{"title":"Dynamics simulation of optically induced particle assembly for 3D microstructure","authors":"Sheng Hu , Lingli Wang , Yu Liu","doi":"10.1016/j.colsurfa.2026.139819","DOIUrl":"10.1016/j.colsurfa.2026.139819","url":null,"abstract":"<div><div>Particle assembly is a fascinating study in the fields of micromanipulation, such as artificial tissue and organ, photonic crystal synthesis, and superstructure material fabrication. Optoelectronic tweezers, as a flexible manipulation approach, could provide underlying potential to guide the target particles into a desired location. The secondary DEP effect plays an important role in particle-particle interaction to decide their structure and pattern. In this way, this paper proposes a flexible and straightforward dipole moment model to simulate the assembly of particles onto an induced light pattern. The commercial software COMSOL Multiphysics can efficiently solve the Laplace equation related to the electric field. It is important that the built-in particle tracing module enables the analysis of particle behaviors once the relevant forces have been determined. Thus, a circle ring light pattern, acting as a virtual electrode, can be used in the study of particle assembly with the advantages of no programming and good visualization. We can study a number of particles, ranging from three to ten, in this model and observe their specific assembly resulting from particle-particle interactions. The simulated results imply that particle numbers lead to unique three-dimensional structures. Compared to the symmetric assembly caused by a ring, the assemblies at the bottom wall can be characterized by square and triangular rings. This approach provides a new insight into exploring the particle assembly and their structures in optoelectronic tweezers. Furthermore, the specific pattern consisting of particles can act as a candidate for applications in photonic crystal filters and surface plasmon resonance.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139819"},"PeriodicalIF":5.4,"publicationDate":"2026-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185559","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}
Pub Date : 2026-02-01DOI: 10.1016/j.colsurfa.2026.139809
Feng Zhou , Yuhan Jiang , Wei Lai , Yu Zhang , Fangji Yang
Cellulose nanocrystals (CNCs) have attracted fast increasing interests in the pharmaceutical and food (nano)formulations, due to their inherent sustainability and unique characteristics, but the highly hydrophilic nature greatly limits their applications. Here, we investigated the potential of CNCs to perform as (nano)carriers for curcumin (Cur), an important hydrophobic bioactive. To achieve this, two strategies were adopted: use of octenyl succinic anhydride specificly modifying CNCs (OSA-CNCs) and application of an emulsification-evaporation process. The loading amount (LA) and yield of Cur in the soluble Cur-CNC complexes, as well as their particle characteristics (including particle size and morphology), were characterized using dynamic light scattering (DLS), atomic force microscopy (AFM), X-ray diffraction (XRD), and UV-Vis spectroscopy. The results indicated that OSA-CNCs exhibited a superior loading amount (up to 7.5 g/100 g CNC) compared to unmodified CNC (1.36 g/100 g CNC). The greater LA in the OSA-CNCs case was mainly due to the formation of nanobundle-like complexes with Cur molecules as the binding cores. The Cur encapsulated in all the complexes was prominently present in the amorphous state, and exhibited an significantly improved stability. In vitro digestion experiments indicated that the encapsulated Cur molecules had a low bioaccessibility, but kept highly stable throughout the whole gastric and intestinal digestion. This research indicates that CNCs can be developed into a kind of effective carriers for improved water dispersibility, chemical stability and delayed release during GI digestion of hydrophobic bioactives. The findings would be of great interest for extending the utilization of CNCs in the pharmaceutical and food formulations, and the design of colon-targeted delivery systems.
纤维素纳米晶体(CNCs)由于其固有的可持续性和独特的特性,在制药和食品(纳米)配方中引起了越来越多的兴趣,但其高度亲水性极大地限制了其应用。在这里,我们研究了CNCs作为姜黄素(Cur)的纳米载体的潜力,姜黄素是一种重要的疏水生物活性物质。为了实现这一目标,采用了两种策略:使用辛烯基丁二酸酐特异性修饰cnc (osa - cnc)和应用乳化蒸发工艺。采用动态光散射(DLS)、原子力显微镜(AFM)、x射线衍射(XRD)和紫外可见光谱(UV-Vis)表征了可溶性cu - cnc配合物中Cur的负荷量(LA)和产率,以及它们的颗粒特征(包括粒径和形貌)。结果表明,与未改性的CNC(1.36 g/100 g CNC)相比,osa -CNC表现出更高的负载量(高达7.5 g/100 g CNC)。在osa - cnc的情况下,更大的LA主要是由于形成了以Cur分子为结合核心的纳米束状配合物。包封在所有配合物中的Cur都以非晶态显著存在,并表现出明显改善的稳定性。体外消化实验表明,包封后的Cur分子具有较低的生物可及性,但在整个胃和肠道消化过程中保持高度稳定。本研究表明,cnc可作为一种有效的载体,改善疏水生物活性在胃肠道消化过程中的水分散性、化学稳定性和延迟释放。这一发现对于扩大cnc在制药和食品配方中的应用以及结肠靶向递送系统的设计具有重要意义。
{"title":"Cellulose nanocrystals as nanocarriers for improved stability and digestion-resistant release of curcumin","authors":"Feng Zhou , Yuhan Jiang , Wei Lai , Yu Zhang , Fangji Yang","doi":"10.1016/j.colsurfa.2026.139809","DOIUrl":"10.1016/j.colsurfa.2026.139809","url":null,"abstract":"<div><div>Cellulose nanocrystals (CNCs) have attracted fast increasing interests in the pharmaceutical and food (nano)formulations, due to their inherent sustainability and unique characteristics, but the highly hydrophilic nature greatly limits their applications. Here, we investigated the potential of CNCs to perform as (nano)carriers for curcumin (Cur), an important hydrophobic bioactive. To achieve this, two strategies were adopted: use of octenyl succinic anhydride specificly modifying CNCs (OSA-CNCs) and application of an emulsification-evaporation process. The loading amount (LA) and yield of Cur in the soluble Cur-CNC complexes, as well as their particle characteristics (including particle size and morphology), were characterized using dynamic light scattering (DLS), atomic force microscopy (AFM), X-ray diffraction (XRD), and UV-Vis spectroscopy. The results indicated that OSA-CNCs exhibited a superior loading amount (up to 7.5 g/100 g CNC) compared to unmodified CNC (1.36 g/100 g CNC). The greater LA in the OSA-CNCs case was mainly due to the formation of nanobundle-like complexes with Cur molecules as the binding cores. The Cur encapsulated in all the complexes was prominently present in the amorphous state, and exhibited an significantly improved stability. <em>In vitro</em> digestion experiments indicated that the encapsulated Cur molecules had a low bioaccessibility, but kept highly stable throughout the whole gastric and intestinal digestion. This research indicates that CNCs can be developed into a kind of effective carriers for improved water dispersibility, chemical stability and delayed release during GI digestion of hydrophobic bioactives. The findings would be of great interest for extending the utilization of CNCs in the pharmaceutical and food formulations, and the design of colon-targeted delivery systems.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139809"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185569","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}
Pub Date : 2026-02-01DOI: 10.1016/j.colsurfa.2026.139810
Jiahuan Wang , Zuozhu Yin , Xiangyu Han , Yongcun Ma , Zhen Hong , Chan Xie , Zhiyang Jiang , Yidan Luo
Avionics equipment often use epoxy resin as encapsulation material. However, epoxy resins have limited performance in terms of heat dissipation, electromagnetic shielding, and resistance to moisture and heat. As the integration of avionics continues to increase, epoxy resins have become more and more difficult to meet the stringent requirements for high reliability of avionics in the aerospace industry. In this study, inspired by the unique structure of lotus leaves, a thin film composite of mesophase carbon microspheres (MCMB) and manganese dioxide (MnO2) was prepared on the surface of a copper foil using a mechanical hybrid spraying method. The film exhibits excellent superhydrophobicity with a water contact angle of 161.1°. This performance was attributed to its micro- and nanoscale roughness structure and low surface energy modification by POTS/stearic acid. In terms of infrared stealth, the composite material effectively suppresses thermal radiation through a trapped air layer and gradient thermal resistance design. In addition, the material’s electromagnetic shielding effectiveness in the 2.4 GHz band reaches −56 dB, originating from the synergistic effect of reflection loss in the copper substrate and dielectric absorption in MnO2. At the same time, the three-dimensional network constructed by the MCMBs gives the material high thermal conductivity, which significantly improves the thermal management efficiency. The composite film also has good abrasion resistance, chemical stability and self-cleaning function, which is suitable for avionics and other fields of protection, providing a new solution to solve the problem of avionics packaging.
{"title":"Lotus leaf-inspired MCMB/MnO2 superhydrophobic composite coating simultaneously boosts thermal dissipation and electromagnetic shielding for aerospace avionics","authors":"Jiahuan Wang , Zuozhu Yin , Xiangyu Han , Yongcun Ma , Zhen Hong , Chan Xie , Zhiyang Jiang , Yidan Luo","doi":"10.1016/j.colsurfa.2026.139810","DOIUrl":"10.1016/j.colsurfa.2026.139810","url":null,"abstract":"<div><div>Avionics equipment often use epoxy resin as encapsulation material. However, epoxy resins have limited performance in terms of heat dissipation, electromagnetic shielding, and resistance to moisture and heat. As the integration of avionics continues to increase, epoxy resins have become more and more difficult to meet the stringent requirements for high reliability of avionics in the aerospace industry. In this study, inspired by the unique structure of lotus leaves, a thin film composite of mesophase carbon microspheres (MCMB) and manganese dioxide (MnO<sub>2</sub>) was prepared on the surface of a copper foil using a mechanical hybrid spraying method. The film exhibits excellent superhydrophobicity with a water contact angle of 161.1°. This performance was attributed to its micro- and nanoscale roughness structure and low surface energy modification by POTS/stearic acid. In terms of infrared stealth, the composite material effectively suppresses thermal radiation through a trapped air layer and gradient thermal resistance design. In addition, the material’s electromagnetic shielding effectiveness in the 2.4 GHz band reaches −56 dB, originating from the synergistic effect of reflection loss in the copper substrate and dielectric absorption in MnO<sub>2</sub>. At the same time, the three-dimensional network constructed by the MCMBs gives the material high thermal conductivity, which significantly improves the thermal management efficiency. The composite film also has good abrasion resistance, chemical stability and self-cleaning function, which is suitable for avionics and other fields of protection, providing a new solution to solve the problem of avionics packaging.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139810"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171340","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}
Pub Date : 2026-01-31DOI: 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
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-NH2, NH2-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.
{"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":"2026-01-31","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}
Pub Date : 2026-01-31DOI: 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
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.
{"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":"2026-01-31","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}