Carbon-based perovskite solar cells (C-PSCs) shows great commercial application potential due the advantages of excellent stability and low cost. However, the energy level mismatch of the perovskite/carbon back interface is harmful to separation and extraction of carriers, which in turn limits power conversion efficiency (PCE) of C-PSCs. In this work, two kinds of molybdenum oxides, MoO2 and MoO3 are synthesized as inserting layer between perovskite layer and carbon electrode. The prepared MoO2 and MoO3 first serve as hole transport layers (HTLs) to minimize energy bandgap of the back interface. Because the Fermi level (EF) of MoO2 or MoO3 locates between HOMO level of perovskite and EF of carbon electrode, MoO2 or MoO3 functions as a step for the hole’s extraction and transport. Moreover, the inserted MoO2 oy MoO3 layer can passivate the Pb2 + defects effectively, reducing non-radiative recombination remarkably. As a result, The PCE value of C-PSCs using MoO2 or MoO3 as HTLs is enhanced to 9.24 % or 8.24 %, indicating significant PCE enhancement rates of 44.6 % or 29.0 % compared with the control device (6.39 %). What’s more, the C-PSCs using MoO2 or MoO3 layer exhibits perfect stability, and the PCE retention rates reach 92.9 % and 91.1 % after 60 days stability test.
{"title":"Synthesis of molybdenum oxides as effective bifunctional layers for carbon-based CsPbBr3 perovskite solar cells","authors":"Zeqi Zhang, Honghao Jiao, Yinuo Liu, Yanying Wu, Jingyuan Ma, Mingxing Wu","doi":"10.1016/j.colsurfa.2025.139175","DOIUrl":"10.1016/j.colsurfa.2025.139175","url":null,"abstract":"<div><div>Carbon-based perovskite solar cells (C-PSCs) shows great commercial application potential due the advantages of excellent stability and low cost. However, the energy level mismatch of the perovskite/carbon back interface is harmful to separation and extraction of carriers, which in turn limits power conversion efficiency (PCE) of C-PSCs. In this work, two kinds of molybdenum oxides, MoO<sub>2</sub> and MoO<sub>3</sub> are synthesized as inserting layer between perovskite layer and carbon electrode. The prepared MoO<sub>2</sub> and MoO<sub>3</sub> first serve as hole transport layers (HTLs) to minimize energy bandgap of the back interface. Because the Fermi level (<em>E</em><sub>F</sub>) of MoO<sub>2</sub> or MoO<sub>3</sub> locates between HOMO level of perovskite and <em>E</em><sub>F</sub> of carbon electrode, MoO<sub>2</sub> or MoO<sub>3</sub> functions as a step for the hole’s extraction and transport. Moreover, the inserted MoO<sub>2</sub> oy MoO<sub>3</sub> layer can passivate the Pb<sup>2 +</sup> defects effectively, reducing non-radiative recombination remarkably. As a result, The PCE value of C-PSCs using MoO<sub>2</sub> or MoO<sub>3</sub> as HTLs is enhanced to 9.24 % or 8.24 %, indicating significant PCE enhancement rates of 44.6 % or 29.0 % compared with the control device (6.39 %). What’s more, the C-PSCs using MoO<sub>2</sub> or MoO<sub>3</sub> layer exhibits perfect stability, and the PCE retention rates reach 92.9 % and 91.1 % after 60 days stability test.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139175"},"PeriodicalIF":5.4,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748849","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 : 2025-12-05DOI: 10.1016/j.colsurfa.2025.139162
Qi Xue , Wenshun Wang , Chongyi Wang , Ximei Xiao , Yongliang Wang , Meiwen Cao , Jing Fu
Stereolithography (SLA) printable denture-tooth resin was modified with magnesium oxide nanoparticles (nMgO) to suppress Streptococcus mutans (S. mutans) biofilms while maintaining key material properties. nMgO was characterized prior to incorporation: ζ-potential ≈ +15 mV, cubic phase (XRD), reactive oxygen species generation (EPR), and near-spherical to polyhedral particles of ∼50–100 nm (TEM). Liquid resin containing 0–5 wt% nMgO was printed and post-cured under a standardized protocol. Antibiofilm activity was evaluated after a 24 h S. mutans challenge using viable biofilm counts and live/dead imaging. At 5 wt% nMgO, viable counts decreased by ∼89 % (p < 0.001); microscopy indicated increased bacterial death. Degree of conversion (FTIR), wettability, wear, compressive strength, and microhardness showed no significant differences from the unfilled control (p > 0.05). Flexural properties and water sorption and solubility remained within ISO 10477 limits, and cell-extract tests with human gingival fibroblasts met ISO 10993–5 non-cytotoxicity. These results indicate that embedding nMgO confers antibiofilm activity while retaining properties and standards compliance for denture-tooth materials, with potential utility at plaque-prone tooth–prosthesis interfaces.
{"title":"Magnesium oxide nanoparticles-modified 3D-printed denture tooth resin: Interfacial antibiofilm activity against Streptococcus mutans biofilms and material performance in vitro","authors":"Qi Xue , Wenshun Wang , Chongyi Wang , Ximei Xiao , Yongliang Wang , Meiwen Cao , Jing Fu","doi":"10.1016/j.colsurfa.2025.139162","DOIUrl":"10.1016/j.colsurfa.2025.139162","url":null,"abstract":"<div><div>Stereolithography (SLA) printable denture-tooth resin was modified with magnesium oxide nanoparticles (nMgO) to suppress <em>Streptococcus mutans</em> (<em>S. mutans</em>) biofilms while maintaining key material properties. nMgO was characterized prior to incorporation: ζ-potential ≈ +15 mV, cubic phase (XRD), reactive oxygen species generation (EPR), and near-spherical to polyhedral particles of ∼50–100 nm (TEM). Liquid resin containing 0–5 wt% nMgO was printed and post-cured under a standardized protocol. Antibiofilm activity was evaluated after a 24 h <em>S. mutans</em> challenge using viable biofilm counts and live/dead imaging. At 5 wt% nMgO, viable counts decreased by ∼89 % (p < 0.001); microscopy indicated increased bacterial death. Degree of conversion (FTIR), wettability, wear, compressive strength, and microhardness showed no significant differences from the unfilled control (p > 0.05). Flexural properties and water sorption and solubility remained within ISO 10477 limits, and cell-extract tests with human gingival fibroblasts met ISO 10993–5 non-cytotoxicity. These results indicate that embedding nMgO confers antibiofilm activity while retaining properties and standards compliance for denture-tooth materials, with potential utility at plaque-prone tooth–prosthesis interfaces.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139162"},"PeriodicalIF":5.4,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748848","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 : 2025-12-05DOI: 10.1016/j.colsurfa.2025.139136
Yuki Ide
Diatoms are key photosynthetic microorganisms that inhabit aquatic environments, from where they contribute significantly to global oxygen production. In particular, planktonic diatoms, which lack motile organelles, rely on water movement to remain suspended near the ocean surface. In this study, we investigated the temperature-dependent buoyancy of diatom Phaeodactylum tricornutum using direct video microscopy and a custom-built thermal chamber. Motion tracking of 100 individual cells revealed that higher temperatures promoted upward movement, likely due to thermally-induced fluid circulation. Quantitative analysis showed that in a large glass chamber (22 mm × 2 mm × 35 mm), the average upward speeds were 760.6 ± 29.2, 22.6 ± 2.3, and 12.6 ± 0.5 at 35, 20–25, and 5°C, respectively. In contrast, in a small chamber (1 mm³), cell speeds were significantly lower and less variable: 7.1 ± 0.3 µm/s at 35, 3.8 ± 0.3 at 20–25, and 5.4 ± 0.3 at 5°C. These results suggest that spatial scale and thermal gradients seemingly played a critical role in diatom buoyancy. Our findings provide microscopic evidence for temperature-driven buoyancy mechanisms and offer insights into physicochemical processes and microscale fluid dynamics relevant to colloidal and surface engineering, including particle transport, environmental sensing, and planktonic behavior under changing thermal conditions.
{"title":"Rising with heat: Temperature-driven buoyancy mechanisms in planktonic diatoms","authors":"Yuki Ide","doi":"10.1016/j.colsurfa.2025.139136","DOIUrl":"10.1016/j.colsurfa.2025.139136","url":null,"abstract":"<div><div>Diatoms are key photosynthetic microorganisms that inhabit aquatic environments, from where they contribute significantly to global oxygen production. In particular, planktonic diatoms, which lack motile organelles, rely on water movement to remain suspended near the ocean surface. In this study, we investigated the temperature-dependent buoyancy of diatom <em>Phaeodactylum tricornutum</em> using direct video microscopy and a custom-built thermal chamber. Motion tracking of 100 individual cells revealed that higher temperatures promoted upward movement, likely due to thermally-induced fluid circulation. Quantitative analysis showed that in a large glass chamber (22 mm × 2 mm × 35 mm), the average upward speeds were 760.6 ± 29.2, 22.6 ± 2.3, and 12.6 ± 0.5 at 35, 20–25, and 5°C, respectively. In contrast, in a small chamber (1 mm³), cell speeds were significantly lower and less variable: 7.1 ± 0.3 µm/s at 35, 3.8 ± 0.3 at 20–25, and 5.4 ± 0.3 at 5°C. These results suggest that spatial scale and thermal gradients seemingly played a critical role in diatom buoyancy. Our findings provide microscopic evidence for temperature-driven buoyancy mechanisms and offer insights into physicochemical processes and microscale fluid dynamics relevant to colloidal and surface engineering, including particle transport, environmental sensing, and planktonic behavior under changing thermal conditions.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139136"},"PeriodicalIF":5.4,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749238","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}
Graphitic carbon nitride (g-C3N4) exhibits significant potential in photocatalytic hydrogen peroxide (H2O2); however, its practical application is constrained by narrow spectral light absorption, high charge carrier recombination rates, and insufficient surface-active sites due to inherent structural defects. Herein, ultrathin carbon nitride (UCN) nanosheets were coupled with porphyrin-based covalent organic frameworks (COFs) via π-π interaction and H-bond to construct 2D COF/UCN heterojunctions. The optimized catalysts demonstrated a remarkable H2O2 production rate of 418.93 μmol·g−1·h−1 under visible light, representing a 5.3-fold enhancement over intrinsic g-C3N4. Crucially, band structure analysis and in situ infrared spectroscopy confirmed that the heterojunction of enhanced interfacial charge migration and spatial separation facilitated efficient H2O2 generation via a single-step two-electron oxygen reduction pathway (O2 + 2H+ + 2e- → H2O2). This work demonstrates that heterojunction engineering synergistically optimizes light harvesting, charge separation, and surface reactions, providing a novel paradigm for carbon nitride modification and establishing a design platform for solar-driven H2O2 production.
{"title":"Construction of COF/ultrathin carbon nitride heterojunctions for solar-driven high-efficiency photocatalytic H2O2 production","authors":"Chaoqing Xiang , Yuelan Chen , Baoping Qi , Hongjun Wu","doi":"10.1016/j.colsurfa.2025.139160","DOIUrl":"10.1016/j.colsurfa.2025.139160","url":null,"abstract":"<div><div>Graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) exhibits significant potential in photocatalytic hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>); however, its practical application is constrained by narrow spectral light absorption, high charge carrier recombination rates, and insufficient surface-active sites due to inherent structural defects. Herein, ultrathin carbon nitride (UCN) nanosheets were coupled with porphyrin-based covalent organic frameworks (COFs) via π-π interaction and H-bond to construct 2D COF/UCN heterojunctions. The optimized catalysts demonstrated a remarkable H<sub>2</sub>O<sub>2</sub> production rate of 418.93 μmol·g<sup>−1</sup>·h<sup>−1</sup> under visible light, representing a 5.3-fold enhancement over intrinsic g-C<sub>3</sub>N<sub>4</sub>. Crucially, band structure analysis and in situ infrared spectroscopy confirmed that the heterojunction of enhanced interfacial charge migration and spatial separation facilitated efficient H<sub>2</sub>O<sub>2</sub> generation via a single-step two-electron oxygen reduction pathway (O<sub>2</sub> + 2H<sup>+</sup> + 2e<sup>-</sup> → H<sub>2</sub>O<sub>2</sub>). This work demonstrates that heterojunction engineering synergistically optimizes light harvesting, charge separation, and surface reactions, providing a novel paradigm for carbon nitride modification and establishing a design platform for solar-driven H<sub>2</sub>O<sub>2</sub> production.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139160"},"PeriodicalIF":5.4,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749911","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 : 2025-12-05DOI: 10.1016/j.colsurfa.2025.139120
Jia Yen Lee, Sit Foon Cheng, Thorsten Heidelberg
Amide-linked sugar-based surfactants combine high chemical stability with unsurpassed economic viability for renewable-resource based surfactants. This reflects the easy transformation of reducing sugars into aminopolyols, followed by transacyclation with fatty esters. However, amide-linked surfactants typically exhibit high Krafft points due to intermolecular hydrogen bonds. The resulting poor water solubility limits the application potential. Aiming to increase the water solubility, we replaced the amide-hydrogen of lactosyl amides with a polar hydroxy-ethyl group. The choice of the carbohydrate head group does not only address resource economy, but also reflects the frequent incorporation of lactose in biological antigens, thereby suggesting high biocompatibility. A two-step-synthesis approach, excluding chromatographic purifications, was applied to enable a viable production. The resulting N-hydroxyethyl lactosyl amides exhibited a drastic decrease in Krafft temperature from above 90 °C for a non-substituted analog to values below 40 °C. Low surface tension of aqueous solutions and high foam stability matched the common behavior of carbohydrate-based surfactants. Therefore, we conclude promising application potential for the surfactant type.
{"title":"N-Hydroxy-ethylation of lactosyl amides: A strategy to increase water-solubility","authors":"Jia Yen Lee, Sit Foon Cheng, Thorsten Heidelberg","doi":"10.1016/j.colsurfa.2025.139120","DOIUrl":"10.1016/j.colsurfa.2025.139120","url":null,"abstract":"<div><div>Amide-linked sugar-based surfactants combine high chemical stability with unsurpassed economic viability for renewable-resource based surfactants. This reflects the easy transformation of reducing sugars into aminopolyols, followed by transacyclation with fatty esters. However, amide-linked surfactants typically exhibit high Krafft points due to intermolecular hydrogen bonds. The resulting poor water solubility limits the application potential. Aiming to increase the water solubility, we replaced the amide-hydrogen of lactosyl amides with a polar hydroxy-ethyl group. The choice of the carbohydrate head group does not only address resource economy, but also reflects the frequent incorporation of lactose in biological antigens, thereby suggesting high biocompatibility. A two-step-synthesis approach, excluding chromatographic purifications, was applied to enable a viable production. The resulting <em>N</em>-hydroxyethyl lactosyl amides exhibited a drastic decrease in Krafft temperature from above 90 °C for a non-substituted analog to values below 40 °C. Low surface tension of aqueous solutions and high foam stability matched the common behavior of carbohydrate-based surfactants. Therefore, we conclude promising application potential for the surfactant type.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139120"},"PeriodicalIF":5.4,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749908","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 : 2025-12-04DOI: 10.1016/j.colsurfa.2025.139113
Wen Mu , Yuanyuan Hou , Zhongshan Wang , Mengran Yu , Yongling Wu , Yonghua Wang , Mingming Liu
Slippery liquid-infused porous surfaces (SLIPS) rely primarily on capillary forces and interfacial interactions to retain the infused lubricant. However, under external mechanical impact, shear stress, or environmental fluctuations such as temperature and humidity, the lubricant can easily deplete or redistribute unevenly, leading to micro/nanostructural instability, interfacial degradation, and deterioration of lubricating performance. This highlights the urgent need for high-performance adhesives that are compatible with porous architectures and capable of providing robust substrate protection. In this study, the synthetic organosilane-modified silica sol inorganic adhesive (Glymo) was utilized to modified the organic polyurethane (PU), forming an organic–inorganic hybrid Glymo-modified PU binder (GPU). A fluorinated hollow mesoporous sphere (F-HMS) was incorporated into the GPU binder system, followed by the preparation of a superhydrophobic coating via spray deposition. Subsequently, perfluoropolyether (PFPE) lubricant was infused into the micro/nano-voids through vacuum impregnation, forming a stable and uniform SLIPS coating. The resulting coatings exhibited outstanding mechanical durability and multi-phase repellency toward water, macromolecular substances, and low–surface-energy liquids. Notably, the multilayer lubricant-storage architecture endows the coating with a sustained self-replenishing capability, as the lubricant can continuously migrate from the internal cavities to the surface, maintaining stable interfacial functionality even after partial lubricant loss. This work presents a promising strategy for the fabrication of multifunctional coatings and offers a viable solution to the lubricant depletion challenge in SLIPS systems.
{"title":"Hollow microspheres-based self-repairing slippery coatings with multiple protection functionality","authors":"Wen Mu , Yuanyuan Hou , Zhongshan Wang , Mengran Yu , Yongling Wu , Yonghua Wang , Mingming Liu","doi":"10.1016/j.colsurfa.2025.139113","DOIUrl":"10.1016/j.colsurfa.2025.139113","url":null,"abstract":"<div><div>Slippery liquid-infused porous surfaces (SLIPS) rely primarily on capillary forces and interfacial interactions to retain the infused lubricant. However, under external mechanical impact, shear stress, or environmental fluctuations such as temperature and humidity, the lubricant can easily deplete or redistribute unevenly, leading to micro/nanostructural instability, interfacial degradation, and deterioration of lubricating performance. This highlights the urgent need for high-performance adhesives that are compatible with porous architectures and capable of providing robust substrate protection. In this study, the synthetic organosilane-modified silica sol inorganic adhesive (Glymo) was utilized to modified the organic polyurethane (PU), forming an organic–inorganic hybrid Glymo-modified PU binder (GPU). A fluorinated hollow mesoporous sphere (F-HMS) was incorporated into the GPU binder system, followed by the preparation of a superhydrophobic coating via spray deposition. Subsequently, perfluoropolyether (PFPE) lubricant was infused into the micro/nano-voids through vacuum impregnation, forming a stable and uniform SLIPS coating. The resulting coatings exhibited outstanding mechanical durability and multi-phase repellency toward water, macromolecular substances, and low–surface-energy liquids. Notably, the multilayer lubricant-storage architecture endows the coating with a sustained self-replenishing capability, as the lubricant can continuously migrate from the internal cavities to the surface, maintaining stable interfacial functionality even after partial lubricant loss. This work presents a promising strategy for the fabrication of multifunctional coatings and offers a viable solution to the lubricant depletion challenge in SLIPS systems.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139113"},"PeriodicalIF":5.4,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145750271","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 : 2025-12-04DOI: 10.1016/j.colsurfa.2025.139173
Qiongyi Huang , Wenjing Xie , Peiyao Liu , Qingwei Yu , Jingying Li , Xinyu Wei , Chunying Jiang , Peixuan Tan , Ding Cao , Ying Tang
Green synthetized Ag nanoparticles are increasingly used as antimicrobial agents topically applied to human skin for sanitization and medical purposes. Despite the widespread use, little was known on their antibiofilm efficacy and dermocompatibility. This study reports a systematic investigation into the impacts of green synthetized 0–3D Ag nanostructures, including 0D nanospheres, 1D nanowires, 2D nanoprisms and 3D nanoflowers as well as Ag nanospheres modified by different phytochemicals, on anti-biofilm efficacy and biocompatibility at the nano-skin interface. It was revealed that varying the Ag morphology induces distinct effects on two established polyspecies models consisting of skin-borne microbes (S. aureus-S. epidermidis and S. aureus-C. albicans). Ag nanospheres and nanowires are advantageous in inhibiting the formation of early biofilms (47–61 %) while Ag nanoprisms and nanoflowers are more effective in destroying mature biofilms (68–70 %). ROS-mediated oxidative stress, physical damage to cell membrane integrity, “contact killing” of microbial cells and suppression of adhesion-related gene expression are mechanisms involved in the anti-biofilm actions of these green synthetized Ag nanostructures. Furthermore, the dermocompatibility assessments were performed in reconstructed human epidermis. Although all exposed epidermis models remained > 50 % tissue viability, more Ag nanospheres were transdermally adsorbed than other morphologies while Ag nanoprisms were shown to be more cytotoxic. These findings provide insights into the impacts of 0–3D green synthetized Ag nanostructures on skin-borne polyspecies biofilms and dermocompatibility at the nano-skin interface, highlighting the importance of taking morphology and phytochemical modification into consideration for the rational design of sustainable Ag-based antimicrobials tailored for topical applications.
{"title":"The impacts of green synthetized 0-to 3-dimentional Ag nanostructures on polyspecies microbial biofilms and dermocompatibility","authors":"Qiongyi Huang , Wenjing Xie , Peiyao Liu , Qingwei Yu , Jingying Li , Xinyu Wei , Chunying Jiang , Peixuan Tan , Ding Cao , Ying Tang","doi":"10.1016/j.colsurfa.2025.139173","DOIUrl":"10.1016/j.colsurfa.2025.139173","url":null,"abstract":"<div><div>Green synthetized Ag nanoparticles are increasingly used as antimicrobial agents topically applied to human skin for sanitization and medical purposes. Despite the widespread use, little was known on their antibiofilm efficacy and dermocompatibility. This study reports a systematic investigation into the impacts of green synthetized 0–3D Ag nanostructures, including 0D nanospheres, 1D nanowires, 2D nanoprisms and 3D nanoflowers as well as Ag nanospheres modified by different phytochemicals, on anti-biofilm efficacy and biocompatibility at the nano-skin interface. It was revealed that varying the Ag morphology induces distinct effects on two established polyspecies models consisting of skin-borne microbes (<em>S. aureus-S. epidermidis</em> and <em>S. aureus-C. albicans</em>). Ag nanospheres and nanowires are advantageous in inhibiting the formation of early biofilms (47–61 %) while Ag nanoprisms and nanoflowers are more effective in destroying mature biofilms (68–70 %). ROS-mediated oxidative stress, physical damage to cell membrane integrity, “contact killing” of microbial cells and suppression of adhesion-related gene expression are mechanisms involved in the anti-biofilm actions of these green synthetized Ag nanostructures. Furthermore, the dermocompatibility assessments were performed in reconstructed human epidermis. Although all exposed epidermis models remained > 50 % tissue viability, more Ag nanospheres were transdermally adsorbed than other morphologies while Ag nanoprisms were shown to be more cytotoxic. These findings provide insights into the impacts of 0–3D green synthetized Ag nanostructures on skin-borne polyspecies biofilms and dermocompatibility at the nano-skin interface, highlighting the importance of taking morphology and phytochemical modification into consideration for the rational design of sustainable Ag-based antimicrobials tailored for topical applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139173"},"PeriodicalIF":5.4,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145693095","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 : 2025-12-04DOI: 10.1016/j.colsurfa.2025.139169
Shenghao Yue , Jixing Bai , Qi Cao , Miao Jiang , Xiangzhou Yuan
Carbon-based electromagnetic wave (EMW) absorbers possess advantageous properties such as low density, tunable conductivity, and excellent environmental stability. However, their EMW absorption capabilities are typically limited due to inherent insufficient loss mechanisms. Morphology optimization represents a promising approach for overcoming this limitation by tuning microstructures to enhance electromagnetic attenuation. Herein, we propose a cost-effective interfacial self-assembly strategy, utilizing interfacial tension among lignin, tetrahydrofuran and water molecules to fabricate spherical carbon-based EMW absorbers. Employing lignin as an abundant and renewable carbon precursor, the resulting microspheres exhibit improved dielectric properties owing to their structural refinement. Control of the rotational speed of stirring during self-assembly further improves sphere size distribution, thereby remarkably enhancing the EMW absorption performance. Specifically, the optimal sample achieves strong reflection loss of −44.28 dB at a thickness as thin as 1.8 mm and effective absorption bandwidth of 3.9 GHz, verifying the considerable performance enhancement by uniform spherical morphology. Radar cross-section simulations additionally confirm its superior far-field EMW absorption capability, further demonstrating the potential of this approach for developing renewable, low-cost and morphology-optimized carbon-based EMW absorbers.
{"title":"Lignin-derived porous carbon microspheres via interfacial self-assembly for superior electromagnetic wave absorption","authors":"Shenghao Yue , Jixing Bai , Qi Cao , Miao Jiang , Xiangzhou Yuan","doi":"10.1016/j.colsurfa.2025.139169","DOIUrl":"10.1016/j.colsurfa.2025.139169","url":null,"abstract":"<div><div>Carbon-based electromagnetic wave (EMW) absorbers possess advantageous properties such as low density, tunable conductivity, and excellent environmental stability. However, their EMW absorption capabilities are typically limited due to inherent insufficient loss mechanisms. Morphology optimization represents a promising approach for overcoming this limitation by tuning microstructures to enhance electromagnetic attenuation. Herein, we propose a cost-effective interfacial self-assembly strategy, utilizing interfacial tension among lignin, tetrahydrofuran and water molecules to fabricate spherical carbon-based EMW absorbers. Employing lignin as an abundant and renewable carbon precursor, the resulting microspheres exhibit improved dielectric properties owing to their structural refinement. Control of the rotational speed of stirring during self-assembly further improves sphere size distribution, thereby remarkably enhancing the EMW absorption performance. Specifically, the optimal sample achieves strong reflection loss of −44.28 dB at a thickness as thin as 1.8 mm and effective absorption bandwidth of 3.9 GHz, verifying the considerable performance enhancement by uniform spherical morphology. Radar cross-section simulations additionally confirm its superior far-field EMW absorption capability, further demonstrating the potential of this approach for developing renewable, low-cost and morphology-optimized carbon-based EMW absorbers.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139169"},"PeriodicalIF":5.4,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145693193","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 : 2025-12-04DOI: 10.1016/j.colsurfa.2025.139164
Menemşe Gümüşderelioğlu , Murat Şimşek , Derya Kalelioğlu , Anıl Sera Çakmak , Sema Coşkun , Farzin Sana
Effective osseointegration and infection prevention remain critical challenges for metallic implants. In this study, we developed a facile and dual-functional coating strategy by electrospun poly(ethylene oxide) (PEO) fibers incorporated with nano-hydroxyapatite (HA) particles onto pretreated titanium (Ti) surfaces. The HA particles were synthesized via biomimetic precipitation from concentrated simulated body fluid (10 × SBF) under three different conditions: (i) at room temperature (R-HA), (ii) using microwave energy (M-HA), and (iii) in the presence of boric acid (B-HA). Crosslinking with pentaerythritol triacrylate (PETA) under UV irradiation ensured stable fiber coatings. In vitro analyses using MC3T3-E1 pre-osteoblasts and Staphylococcus epidermidis (both biofilm-forming and non-forming strains) strains revealed that while pristine PEO reduced cell attachment, HA incorporation restored proliferation and enhanced osteogenic differentiation, with B-HA showing the highest osteogenic marker expression. Meanwhile, R-HA/PEO coatings exhibited the strongest anti-adhesive effect against bacterial colonization. These results demonstrate that the combination of electrospun PEO fibers with HA—particularly boron-substituted HA—provides a synergistic approach to simultaneously promote bone integration and inhibit bacterial adhesion. This work lays the groundwork for developing smart, long-term implant coatings and highlights the potential for future in vivo studies to validate extended clinical efficacy.
{"title":"Electrospun PEO-based composite coatings containing three varieties of nano-hydroxyapatite for titanium implants: A multifunctional approach to enhancing osteointegration and antibacterial activity","authors":"Menemşe Gümüşderelioğlu , Murat Şimşek , Derya Kalelioğlu , Anıl Sera Çakmak , Sema Coşkun , Farzin Sana","doi":"10.1016/j.colsurfa.2025.139164","DOIUrl":"10.1016/j.colsurfa.2025.139164","url":null,"abstract":"<div><div>Effective osseointegration and infection prevention remain critical challenges for metallic implants. In this study, we developed a facile and dual-functional coating strategy by electrospun poly(ethylene oxide) (PEO) fibers incorporated with nano-hydroxyapatite (HA) particles onto pretreated titanium (Ti) surfaces. The HA particles were synthesized via biomimetic precipitation from concentrated simulated body fluid (10 × SBF) under three different conditions: (i) at room temperature (R-HA), (ii) using microwave energy (M-HA), and (iii) in the presence of boric acid (B-HA). Crosslinking with pentaerythritol triacrylate (PETA) under UV irradiation ensured stable fiber coatings. <em>In vitro</em> analyses using MC3T3-E1 pre-osteoblasts and <em>Staphylococcus epidermidis</em> (both biofilm-forming and non-forming strains) strains revealed that while pristine PEO reduced cell attachment, HA incorporation restored proliferation and enhanced osteogenic differentiation, with B-HA showing the highest osteogenic marker expression. Meanwhile, R-HA/PEO coatings exhibited the strongest anti-adhesive effect against bacterial colonization. These results demonstrate that the combination of electrospun PEO fibers with HA—particularly boron-substituted HA—provides a synergistic approach to simultaneously promote bone integration and inhibit bacterial adhesion. This work lays the groundwork for developing smart, long-term implant coatings and highlights the potential for future <em>in vivo</em> studies to validate extended clinical efficacy.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139164"},"PeriodicalIF":5.4,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145693168","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 : 2025-12-04DOI: 10.1016/j.colsurfa.2025.139167
Tianliang Lin , Yulan Hu , Qiting Xie , Xuemei Ma , Zhongxiang Zhao , Aijun Liu , Yuxing Ji
Inadequate vascularization represents a major obstacle to wound healing by limiting the delivery of essential nutrients and oxygen. To overcome this limitation, crocetin (Cro), an active component of traditional Chinese medicine, is loaded onto calcium peroxide (CaO2)-based nanoparticles via electrostatic interactions to construct a nanodelivery system (CP@Cro nanoparticles) for evaluating its angiogenic potential. The CP@Cro nanoparticles exhibit pH-responsive degradation and sustained release of calcium ions, oxygen, and crocetin. They demonstrate excellent biocompatibility with Human Umbilical Vein Endothelial Cells (HUVECs) while preserving the bioactivity of crocetin, which promoted cell proliferation and migration in a controlled manner. Notably, extensive tube formation is observed in HUVECs after only 4 h of culturing with CP@Cro nanoparticles in vitro, attributed to the upregulation of vascular endothelial growth factor (VEGF) and zonula occludens-1 (ZO-1) proteins. Meanwhile, freely released calcium ions and oxygen appear to act synergistically to enhance tube formation. Furthermore, crocetin promotes the differentiation of HUVECs into tip endothelial cells, a process that is synergistically amplified by the controlled delivery afforded by CP@Cro nanoparticles. These findings highlight the promising pro-angiogenic functions of crocetin and CP@Cro nanoparticles and indicate a potential therapeutic strategy combining traditional Chinese medicine with nanodelivery systems to promote vascular regeneration.
{"title":"Synthesis and evaluation of pH-responsive crocetin nanoparticles for wound angiogenesis enhancement","authors":"Tianliang Lin , Yulan Hu , Qiting Xie , Xuemei Ma , Zhongxiang Zhao , Aijun Liu , Yuxing Ji","doi":"10.1016/j.colsurfa.2025.139167","DOIUrl":"10.1016/j.colsurfa.2025.139167","url":null,"abstract":"<div><div>Inadequate vascularization represents a major obstacle to wound healing by limiting the delivery of essential nutrients and oxygen. To overcome this limitation, crocetin (Cro), an active component of traditional Chinese medicine, is loaded onto calcium peroxide (CaO<sub>2</sub>)-based nanoparticles via electrostatic interactions to construct a nanodelivery system (CP@Cro nanoparticles) for evaluating its angiogenic potential. The CP@Cro nanoparticles exhibit pH-responsive degradation and sustained release of calcium ions, oxygen, and crocetin. They demonstrate excellent biocompatibility with Human Umbilical Vein Endothelial Cells (HUVECs) while preserving the bioactivity of crocetin, which promoted cell proliferation and migration in a controlled manner. Notably, extensive tube formation is observed in HUVECs after only 4 h of culturing with CP@Cro nanoparticles in vitro, attributed to the upregulation of vascular endothelial growth factor (VEGF) and zonula occludens-1 (ZO-1) proteins. Meanwhile, freely released calcium ions and oxygen appear to act synergistically to enhance tube formation. Furthermore, crocetin promotes the differentiation of HUVECs into tip endothelial cells, a process that is synergistically amplified by the controlled delivery afforded by CP@Cro nanoparticles. These findings highlight the promising pro-angiogenic functions of crocetin and CP@Cro nanoparticles and indicate a potential therapeutic strategy combining traditional Chinese medicine with nanodelivery systems to promote vascular regeneration.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"732 ","pages":"Article 139167"},"PeriodicalIF":5.4,"publicationDate":"2025-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748853","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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