Pub Date : 2026-05-20Epub Date: 2026-01-27DOI: 10.1016/j.colsurfa.2026.139731
Shideng Yuan , Fengmin Li , Lingyu Su , Xuxue Zhang , Shiling Yuan
The safety, stability, and overall performance of hydroxylammonium nitrate (HAN)-based gel propellants were crucial for their application in rocket systems. However, HAN, as a high-energy ionic liquid, posed significant safety and storage challenges, further complicated by the common issue of difficult ignition in traditional gel propellants. We employed molecular dynamics (MD) simulations to investigate the microstructural formation mechanism, dynamic properties, and mechanical stability of B-nanosphere-enhanced PAM(polyacrylamide)/HAN hydrogels. Our findings demonstrated that the B nanosphere acted as a structural core, enhancing PAM cross-linking and suppressing particle aggregation. Increasing the boron content significantly raised viscosity and lowered the diffusion rate of energetic species, thereby intrinsically improving safety and storage characteristics. Interfacial analysis confirmed that the B surface enhanced the hydrogen-bond network between HAN ions, boosting energy density and combustion performance, which helped mitigate ignition difficulties. Furthermore, stretching simulations confirmed that the nanoparticle network hydrogel (NNH) entanglement mode provided superior mechanical stability compared to the nanocomposite (NC) mode. These results offered microscopic guidance for designing safer, more stable, and higher-performance energetic propellants.
{"title":"Insight into structural control and enhanced stability of boron nanosphere reinforced PAM/HAN hydrogels","authors":"Shideng Yuan , Fengmin Li , Lingyu Su , Xuxue Zhang , Shiling Yuan","doi":"10.1016/j.colsurfa.2026.139731","DOIUrl":"10.1016/j.colsurfa.2026.139731","url":null,"abstract":"<div><div>The safety, stability, and overall performance of hydroxylammonium nitrate (HAN)-based gel propellants were crucial for their application in rocket systems. However, HAN, as a high-energy ionic liquid, posed significant safety and storage challenges, further complicated by the common issue of difficult ignition in traditional gel propellants. We employed molecular dynamics (MD) simulations to investigate the microstructural formation mechanism, dynamic properties, and mechanical stability of B-nanosphere-enhanced PAM(polyacrylamide)/HAN hydrogels. Our findings demonstrated that the B nanosphere acted as a structural core, enhancing PAM cross-linking and suppressing particle aggregation. Increasing the boron content significantly raised viscosity and lowered the diffusion rate of energetic species, thereby intrinsically improving safety and storage characteristics. Interfacial analysis confirmed that the B surface enhanced the hydrogen-bond network between HAN ions, boosting energy density and combustion performance, which helped mitigate ignition difficulties. Furthermore, stretching simulations confirmed that the nanoparticle network hydrogel (NNH) entanglement mode provided superior mechanical stability compared to the nanocomposite (NC) mode. These results offered microscopic guidance for designing safer, more stable, and higher-performance energetic propellants.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139731"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076529","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 : 2026-05-20Epub Date: 2026-01-29DOI: 10.1016/j.colsurfa.2026.139762
Lei Miao , Wei Guo , Haitao Chen , Xiaozheng Sun
Understanding the interfacial adsorption pathways of tire‑derived contaminants on hybrid porous materials is critical for advancing colloid and interface science. Here, we design a hierarchically structured metal-organic framework (MOF)‑functionalized nanocellulose (MOF@NC) aerogel using dicarboxylic cellulose nanocrystal (DCN)‑mediated interfacial bridging, forming a chemically active and spatially interconnected adsorption network. The adsorption of 6PPD‑quinone was evaluated through kinetic, isotherm, and thermodynamic analyses, revealing rapid chemisorption consistent with a pseudo‑second‑order model and monolayer adsorption on energetically uniform sites following the Langmuir model, with a maximum adsorption capacity of 20.0 ± 0.5 mg g⁻¹ . The MOF@NC aerogel retained approximately 87.2 ± 2.4 % of its initial adsorption efficiency after five adsorption‑desorption cycles, demonstrating good interfacial stability and reusability. Spectroscopic analyses (FTIR, XPS, SEM‑EDS) identify multiple interfacial interactions, including amide‑bond formation, Lewis acid-base coordination with MOF Zr-oxo clusters, π–π stacking between aromatic domains, hydrogen bonding, and dispersive interactions. Complementary density functional theory (DFT) and reduced density gradient (RDG) reveal energetically favorable adsorption configurations, and pronounced electronic redistribution at the MOF-nanocellulose heterointerface. By integrating macroscopic adsorption behavior with molecular-level interfacial analysis, this work establishes a mechanism-oriented framework for interpreting adsorption at MOF-biopolymer hybrid interfaces, thereby advancing fundamental understanding of how hybrid colloidal interfaces govern the sequestration of aniline-derived contaminants beyond prior performance-focused studies.
{"title":"Interfacial mechanisms of 6PPD-quinone adsorption on metal-organic framework functionalized nanocellulose aerogels","authors":"Lei Miao , Wei Guo , Haitao Chen , Xiaozheng Sun","doi":"10.1016/j.colsurfa.2026.139762","DOIUrl":"10.1016/j.colsurfa.2026.139762","url":null,"abstract":"<div><div>Understanding the interfacial adsorption pathways of tire‑derived contaminants on hybrid porous materials is critical for advancing colloid and interface science. Here, we design a hierarchically structured metal-organic framework (MOF)‑functionalized nanocellulose (MOF@NC) aerogel using dicarboxylic cellulose nanocrystal (DCN)‑mediated interfacial bridging, forming a chemically active and spatially interconnected adsorption network. The adsorption of 6PPD‑quinone was evaluated through kinetic, isotherm, and thermodynamic analyses, revealing rapid chemisorption consistent with a pseudo‑second‑order model and monolayer adsorption on energetically uniform sites following the Langmuir model, with a maximum adsorption capacity of 20.0 ± 0.5 mg g⁻¹ . The MOF@NC aerogel retained approximately 87.2 ± 2.4 % of its initial adsorption efficiency after five adsorption‑desorption cycles, demonstrating good interfacial stability and reusability. Spectroscopic analyses (FTIR, XPS, SEM‑EDS) identify multiple interfacial interactions, including amide‑bond formation, Lewis acid-base coordination with MOF Zr-oxo clusters, π–π stacking between aromatic domains, hydrogen bonding, and dispersive interactions. Complementary density functional theory (DFT) and reduced density gradient (RDG) reveal energetically favorable adsorption configurations, and pronounced electronic redistribution at the MOF-nanocellulose heterointerface. By integrating macroscopic adsorption behavior with molecular-level interfacial analysis, this work establishes a mechanism-oriented framework for interpreting adsorption at MOF-biopolymer hybrid interfaces, thereby advancing fundamental understanding of how hybrid colloidal interfaces govern the sequestration of aniline-derived contaminants beyond prior performance-focused studies.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139762"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076530","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 : 2026-05-20Epub Date: 2026-01-27DOI: 10.1016/j.colsurfa.2026.139746
Juan He , Kaihe Lv , Xianbin Huang , Jinsheng Sun , Han Jia , Yabin Wang
To address wellbore instability arising from the spontaneous water imbibition of rocks in water-based drilling fluids, hydrophobic-cationic rough silica nanoparticles (HRSN) are prepared through a one-step synthesis. SEM, EDS mapping, FTIR, TG, and XPS analyses verify the successful preparation of HRSN. Wettability tests reveal that HRSN increases the contact angles of sandstone and shale surfaces to 154.0° and 124.1°, respectively, achieving a distinct shift from hydrophilic to hydrophobic surfaces. Rheology and filtration evaluations indicate that HRSN exerts negligible effects on fluid rheology while slightly lowering API fluid loss. Capillary rise experiments demonstrate that 0.5 % HRSN suppresses the rising height to −1.08, −1.09, and −1.00 cm for capillaries with inner diameters of 0.3 mm, 0.5 mm, and 1.0 mm, respectively. Core spontaneous imbibition experiments show that 0.5 % HRSN decreases the total mass of imbibed water in shale by 48.1 % and lowers the initial absorption rate to 52 % of that of untreated shale. The linear expansion and rolling recovery rates of 0.5 % HRSN are 37.6 % and 68.5 %, respectively. AFM measurements and three-dimensional ultra-depth digital microscope observations demonstrate that HRSN generates nano/micro-scale rough structures on the filter cake and rock surfaces, thereby strengthening surface hydrophobicity. Molecular dynamics simulations reveal that HRSN, through the synergistic interactions of hydrophobic chains and cationic functionalities, establishes a stable adsorption layer on montmorillonite surfaces, effectively restraining interfacial water aggregation and invasion. Overall, HRSN exhibits remarkable water inhibition performance even at low dosages, serving as a viable solution for strengthening the stability of wellbores in water-based drilling fluids.
{"title":"Synergistically hydrophobic-cationic rough silica nanoparticles for enhancing wellbore stability via suppressing rock water imbibition","authors":"Juan He , Kaihe Lv , Xianbin Huang , Jinsheng Sun , Han Jia , Yabin Wang","doi":"10.1016/j.colsurfa.2026.139746","DOIUrl":"10.1016/j.colsurfa.2026.139746","url":null,"abstract":"<div><div>To address wellbore instability arising from the spontaneous water imbibition of rocks in water-based drilling fluids, hydrophobic-cationic rough silica nanoparticles (HRSN) are prepared through a one-step synthesis. SEM, EDS mapping, FTIR, TG, and XPS analyses verify the successful preparation of HRSN. Wettability tests reveal that HRSN increases the contact angles of sandstone and shale surfaces to 154.0° and 124.1°, respectively, achieving a distinct shift from hydrophilic to hydrophobic surfaces. Rheology and filtration evaluations indicate that HRSN exerts negligible effects on fluid rheology while slightly lowering API fluid loss. Capillary rise experiments demonstrate that 0.5 % HRSN suppresses the rising height to −1.08, −1.09, and −1.00 cm for capillaries with inner diameters of 0.3 mm, 0.5 mm, and 1.0 mm, respectively. Core spontaneous imbibition experiments show that 0.5 % HRSN decreases the total mass of imbibed water in shale by 48.1 % and lowers the initial absorption rate to 52 % of that of untreated shale. The linear expansion and rolling recovery rates of 0.5 % HRSN are 37.6 % and 68.5 %, respectively. AFM measurements and three-dimensional ultra-depth digital microscope observations demonstrate that HRSN generates nano/micro-scale rough structures on the filter cake and rock surfaces, thereby strengthening surface hydrophobicity. Molecular dynamics simulations reveal that HRSN, through the synergistic interactions of hydrophobic chains and cationic functionalities, establishes a stable adsorption layer on montmorillonite surfaces, effectively restraining interfacial water aggregation and invasion. Overall, HRSN exhibits remarkable water inhibition performance even at low dosages, serving as a viable solution for strengthening the stability of wellbores in water-based drilling fluids.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139746"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076621","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 : 2026-05-20Epub Date: 2026-01-27DOI: 10.1016/j.colsurfa.2026.139723
Jing Sun , Zhihao Huang , Jiajia Zhao , Yunfei Wang , Shuangshuang Gong , Chao Zhang , Sen Liu , Hao Zhang , Wei Ye
Bacterial colonization and secondary infection are critical concerns in impaired skin, necessitating advanced therapeutic approaches. Consequently, the development of wound dressings integrated with robust antibacterial and anti-inflammatory functionalities has emerged as a promising direction for the management of severe skin infections. In this study, we developed a biosafe nanocomposite hydrogel capable of precise carbon monoxide (CO) release under red light irradiation for wound therapy. The hydrogel was constructed by incorporating multifunctional Ag/Ag3PO4-doped porous graphitic carbon nitride (AgPCN) nanoparticles, surface-modified with polyethyleneimine (PEI) to enhance CO2 adsorption (forming AgPCN@PEI@CO2), into a chitosan matrix (denoted as APC-CS). Under 630 nm light exposure, AgPCN exhibits dual photothermal and photocatalytic functions. The photothermal effect induces localized heating, triggering the thermal desorption of CO2 from PEI, while its photocatalytic activity concurrently reduces the released CO2 to CO. This synergistic mechanism enables precise spatiotemporal control over CO release by adjusting irradiation parameters and nanoparticle doping levels. The APC-CS hydrogel demonstrates potent synergistic antibacterial activity through combined photothermal sterilization and CO-mediated antibacterial action. The nanocomposite hydrogel demonstrates robust multimodal anti-inflammatory and antibacterial efficacy, along with excellent biocompatibility, thereby significantly accelerating wound healing. This study presents a novel and controllable platform for CO delivery, underscoring its considerable potential for wound-dressing applications.
{"title":"A light-activatable CO-releasing hydrogel with synergistic antibacterial activity promotes infected wound healing","authors":"Jing Sun , Zhihao Huang , Jiajia Zhao , Yunfei Wang , Shuangshuang Gong , Chao Zhang , Sen Liu , Hao Zhang , Wei Ye","doi":"10.1016/j.colsurfa.2026.139723","DOIUrl":"10.1016/j.colsurfa.2026.139723","url":null,"abstract":"<div><div>Bacterial colonization and secondary infection are critical concerns in impaired skin, necessitating advanced therapeutic approaches. Consequently, the development of wound dressings integrated with robust antibacterial and anti-inflammatory functionalities has emerged as a promising direction for the management of severe skin infections. In this study, we developed a biosafe nanocomposite hydrogel capable of precise carbon monoxide (CO) release under red light irradiation for wound therapy. The hydrogel was constructed by incorporating multifunctional Ag/Ag<sub>3</sub>PO<sub>4</sub>-doped porous graphitic carbon nitride (AgPCN) nanoparticles, surface-modified with polyethyleneimine (PEI) to enhance CO<sub>2</sub> adsorption (forming AgPCN@PEI@CO<sub>2</sub>), into a chitosan matrix (denoted as APC-CS). Under 630 nm light exposure, AgPCN exhibits dual photothermal and photocatalytic functions. The photothermal effect induces localized heating, triggering the thermal desorption of CO<sub>2</sub> from PEI, while its photocatalytic activity concurrently reduces the released CO<sub>2</sub> to CO. This synergistic mechanism enables precise spatiotemporal control over CO release by adjusting irradiation parameters and nanoparticle doping levels. The APC-CS hydrogel demonstrates potent synergistic antibacterial activity through combined photothermal sterilization and CO-mediated antibacterial action. The nanocomposite hydrogel demonstrates robust multimodal anti-inflammatory and antibacterial efficacy, along with excellent biocompatibility, thereby significantly accelerating wound healing. This study presents a novel and controllable platform for CO delivery, underscoring its considerable potential for wound-dressing applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139723"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076623","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 : 2026-05-20Epub Date: 2026-01-23DOI: 10.1016/j.colsurfa.2026.139697
Mingmin Jia , Wenhao Cao , Qiuxia Chen , Zhiyi Xia , Shuo Shi , Mingzhi Zheng , Hengyang Mao , Meisheng Li , Yijiang Zhao , Dingliang Dai , Jianhao Qiu
In this study, a g-C3N4/MoS2 composite membrane was successfully fabricated via electrostatic interactions and vacuum-assisted self-assembly. The established heterojunction markedly enhanced charge separation, yielding superior visible-light photocatalytic activity with 95.5 % methylene blue degradation in 150 min. The membrane also demonstrated efficient dye separation (70.8 % rejection for carmine red; 66.7 % for malachite green) and notable antifouling properties, achieving a 74.9 % flux recovery after visible-light cleaning. This work presents a synergistic strategy for simultaneous photocatalytic degradation and membrane separation in advanced water treatment.
{"title":"Visible-light-driven g-C3N4/MoS2 heterojunction membranes for synergistic photocatalysis and antifouling dye separation","authors":"Mingmin Jia , Wenhao Cao , Qiuxia Chen , Zhiyi Xia , Shuo Shi , Mingzhi Zheng , Hengyang Mao , Meisheng Li , Yijiang Zhao , Dingliang Dai , Jianhao Qiu","doi":"10.1016/j.colsurfa.2026.139697","DOIUrl":"10.1016/j.colsurfa.2026.139697","url":null,"abstract":"<div><div>In this study, a g-C<sub>3</sub>N<sub>4</sub>/MoS<sub>2</sub> composite membrane was successfully fabricated via electrostatic interactions and vacuum-assisted self-assembly. The established heterojunction markedly enhanced charge separation, yielding superior visible-light photocatalytic activity with 95.5 % methylene blue degradation in 150 min. The membrane also demonstrated efficient dye separation (70.8 % rejection for carmine red; 66.7 % for malachite green) and notable antifouling properties, achieving a 74.9 % flux recovery after visible-light cleaning. This work presents a synergistic strategy for simultaneous photocatalytic degradation and membrane separation in advanced water treatment.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139697"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146076625","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 : 2026-05-20Epub Date: 2026-01-30DOI: 10.1016/j.colsurfa.2026.139780
Sara Bom , Matilde Carvalho , Pedro Prazeres , Catarina Santos , Ana Margarida Martins , Helena Margarida Ribeiro , Joana Marto
Semi-solid extrusion 3D printing (SSE-3DP) emerges as a powerful technology for producing customized soft-matter pharmaceutical products. However, its implementation is limited by the lack of standardized, mechanistically grounded optimization strategies that address the multifactorial nature of printability. Herein, a stepwise and multi-parametric protocol is proposed to streamline the optimization of materials printed via SSE-3DP through a comprehensive structure–property–performance framework. Two gelatin-based model inks, differing in the content of PEG-40 hydrogenated castor oil (PEG40 HCO), were used to validate the approach. Rheology, texture, thermal-imaging and contact angle measurements were performed as part of the pre-printing workflow to elucidate ink structure and interfacial behavior, while width, length, collapse, pentagram and z-stack assays were carried out to optimize the 3DP quality in-process, and macro and scanning electron microscopy (SEM) imaging were introduced as post-characterization validation tools. Rheological analysis revealed that PEG40 HCO lowers the Sol–Gel crossover temperature, increases viscoelastic moduli and reduces creep compliance, indicating enhanced resistance to deformation during extrusion. These property changes translated into higher extrusion forces and increased susceptibility to clogging, quantitatively predicted by texture analysis (R² ≥ 0.94). Interfacial studies identified acrylic as the optimal printing bed. Line fidelity was primarily governed by print speed, while controlled porosity emerged from the coupled optimization of filament spacing and printing path design. SEM confirmed that PEG40 HCO induces mesoscale reorganization of the gelatin network, yielding improved mechanical stability and geometric fidelity. Overall, this work provides a comprehensive and adaptable framework for SSE-3DP, advancing material-process-design optimization in 13 steps.
{"title":"Which structure-property-process relationships govern semi-solid extrusion 3D printing? A stepwise and multi-parametric optimization protocol for pharmaceutical applications","authors":"Sara Bom , Matilde Carvalho , Pedro Prazeres , Catarina Santos , Ana Margarida Martins , Helena Margarida Ribeiro , Joana Marto","doi":"10.1016/j.colsurfa.2026.139780","DOIUrl":"10.1016/j.colsurfa.2026.139780","url":null,"abstract":"<div><div>Semi-solid extrusion 3D printing (SSE-3DP) emerges as a powerful technology for producing customized soft-matter pharmaceutical products. However, its implementation is limited by the lack of standardized, mechanistically grounded optimization strategies that address the multifactorial nature of printability. Herein, a stepwise and multi-parametric protocol is proposed to streamline the optimization of materials printed via SSE-3DP through a comprehensive structure–property–performance framework. Two gelatin-based model inks, differing in the content of PEG-40 hydrogenated castor oil (PEG40 HCO), were used to validate the approach. Rheology, texture, thermal-imaging and contact angle measurements were performed as part of the pre-printing workflow to elucidate ink structure and interfacial behavior, while width, length, collapse, pentagram and z-stack assays were carried out to optimize the 3DP quality in-process, and macro and scanning electron microscopy (SEM) imaging were introduced as post-characterization validation tools. Rheological analysis revealed that PEG40 HCO lowers the Sol–Gel crossover temperature, increases viscoelastic moduli and reduces creep compliance, indicating enhanced resistance to deformation during extrusion. These property changes translated into higher extrusion forces and increased susceptibility to clogging, quantitatively predicted by texture analysis (R² ≥ 0.94). Interfacial studies identified acrylic as the optimal printing bed. Line fidelity was primarily governed by print speed, while controlled porosity emerged from the coupled optimization of filament spacing and printing path design. SEM confirmed that PEG40 HCO induces mesoscale reorganization of the gelatin network, yielding improved mechanical stability and geometric fidelity. Overall, this work provides a comprehensive and adaptable framework for SSE-3DP, advancing material-process-design optimization in 13 steps.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139780"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171022","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}
Zn deficiency is a major global health problem affecting over 2 billion people worldwide, so it is important to approach the issue of its highly effective delivery to the body. In this study, a zinc ascorbate isoleucinate (ZAI) triple chelate complex was synthesized and characterized for the first time. The optimal synthesis parameters for ZAI were determined to be: pH = 3–8, t = 25–65 °C, τ = 5–20 min. It was observed that fortifying milk with ZAI is effective at concentrations of ≤ 0.005 mol/L. Notably, at 0.005 mol/L ZAI, cfu value (1.55 ×106 in 1 mL) was higher than that of the control sample (0.8 ×106 in 1 mL), indicating a growth stimulation effect on lactic acid bacteria. During fermentation, there was a significant decrease in pH value (from 6.74 to 4.37), an increase in titratable acidity (from 22.52 to 110.41 °T) and viscosity (from 3.3 to 625.8 mPa·s). However, the experimental fermented dairy product with ZAI received the highest sensory score, whereas the fortified milk before fermentation scored the lowest score.
{"title":"Colloidal characteristics and dispersion stability of ascorbate-zinc-isoleucinate triple chelated complex in fermented dairy matrix","authors":"Andrey Blinov , Zafar Rekhman , Alexey Golik , Evgeniy Shaposhnikov , Artem Samovolov , Alina Askerova , Sergey Artyushin , Alexey Lodygin , Andrey Nagdalian","doi":"10.1016/j.colsurfa.2026.139789","DOIUrl":"10.1016/j.colsurfa.2026.139789","url":null,"abstract":"<div><div>Zn deficiency is a major global health problem affecting over 2 billion people worldwide, so it is important to approach the issue of its highly effective delivery to the body. In this study, a zinc ascorbate isoleucinate (ZAI) triple chelate complex was synthesized and characterized for the first time. The optimal synthesis parameters for ZAI were determined to be: pH = 3–8, t = 25–65 °C, τ = 5–20 min. It was observed that fortifying milk with ZAI is effective at concentrations of ≤ 0.005 mol/L. Notably, at 0.005 mol/L ZAI, cfu value (1.55 ×10<sup>6</sup> in 1 mL) was higher than that of the control sample (0.8 ×10<sup>6</sup> in 1 mL), indicating a growth stimulation effect on lactic acid bacteria. During fermentation, there was a significant decrease in pH value (from 6.74 to 4.37), an increase in titratable acidity (from 22.52 to 110.41 °T) and viscosity (from 3.3 to 625.8 mPa·s). However, the experimental fermented dairy product with ZAI received the highest sensory score, whereas the fortified milk before fermentation scored the lowest score.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139789"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171080","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 : 2026-05-20Epub Date: 2026-01-29DOI: 10.1016/j.colsurfa.2026.139755
Taotao Zeng , Qiqi Deng , Zhixiong Liu , Yao Yan , Qian Jiang , Haichao Sha
Under rainfall-induced leaching, uranium (U) tailings may readily release U(VI) into surrounding water bodies, posing significant ecological and human health risks. Current U(VI) remediation strategies mainly rely on material adsorption or biomineralization, whereas studies investigating the synergistic removal performance and underlying mechanisms of biochar-based systems coupled with anaerobic granular sludge (AnGS) remain limited. In this study, nFe–ZnO-modified kelp biochar (Fe–ZnO@BC) was synthesized and combined with AnGS to achieve efficient U(VI) removal. The results demonstrated that under optimal conditions—an initial U(VI) concentration of 80 mg/L, pH of 3, reaction temperature of 303 K, contact time of 24 h, Fe–ZnO@BC dosage of 0.1 g/L, and AnGS dosage of 3 g/L—the U(VI) removal efficiency reached 92.16 %, with a maximum adsorption capacity of 147.46 mg/g. Coexisting ions, including CO₃²⁻, SO₄²⁻, and PO₄³ ⁻, as well as organic matter such as humic acid (HA), inhibited U(VI) removal, among which SO₄²⁻ exerted the most pronounced inhibitory effect. Kinetic and thermodynamic analyses revealed that the U(VI) adsorption process conformed to the pseudo-second-order kinetic model and the Langmuir isotherm model. Characterization using SEM–EDS, FTIR, and XPS indicated that U(VI) removal was primarily driven by complexation with oxygen-containing functional groups, reduction mediated by Fe²⁺, and metal ion exchange. Microbial community analysis further showed that bacterial phyla, including Methanobacteriota, Pseudomonadota, and Atribacterota, along with dominant genera such as Dyella and Burkholderia–Caballeronia–Paraburkholderia, played key roles in U(VI) removal. In addition, reusability and desorption experiments demonstrated that the Fe–ZnO@BC/AnGS maintained U(VI) removal efficiencies above 80 % after five consecutive adsorption–desorption cycles. Overall, this study highlighted the strong potential of the Fe–ZnO@BC/AnGS system for the remediation of U(VI)-contaminated wastewater.
{"title":"Effects and mechanism of nFe-ZnO modified biochar combined with anaerobic granular sludge for U(VI) removal","authors":"Taotao Zeng , Qiqi Deng , Zhixiong Liu , Yao Yan , Qian Jiang , Haichao Sha","doi":"10.1016/j.colsurfa.2026.139755","DOIUrl":"10.1016/j.colsurfa.2026.139755","url":null,"abstract":"<div><div>Under rainfall-induced leaching, uranium (U) tailings may readily release U(VI) into surrounding water bodies, posing significant ecological and human health risks. Current U(VI) remediation strategies mainly rely on material adsorption or biomineralization, whereas studies investigating the synergistic removal performance and underlying mechanisms of biochar-based systems coupled with anaerobic granular sludge (AnGS) remain limited. In this study, nFe–ZnO-modified kelp biochar (Fe–ZnO@BC) was synthesized and combined with AnGS to achieve efficient U(VI) removal. The results demonstrated that under optimal conditions—an initial U(VI) concentration of 80 mg/L, pH of 3, reaction temperature of 303 K, contact time of 24 h, Fe–ZnO@BC dosage of 0.1 g/L, and AnGS dosage of 3 g/L—the U(VI) removal efficiency reached 92.16 %, with a maximum adsorption capacity of 147.46 mg/g. Coexisting ions, including CO₃²⁻, SO₄²⁻, and PO₄³ ⁻, as well as organic matter such as humic acid (HA), inhibited U(VI) removal, among which SO₄²⁻ exerted the most pronounced inhibitory effect. Kinetic and thermodynamic analyses revealed that the U(VI) adsorption process conformed to the pseudo-second-order kinetic model and the Langmuir isotherm model. Characterization using SEM–EDS, FTIR, and XPS indicated that U(VI) removal was primarily driven by complexation with oxygen-containing functional groups, reduction mediated by Fe²⁺, and metal ion exchange. Microbial community analysis further showed that bacterial phyla, including <em>Methanobacteriota</em>, <em>Pseudomonadota</em>, and <em>Atribacterota</em>, along with dominant genera such as <em>Dyella</em> and <em>Burkholderia–Caballeronia–Paraburkholderia</em>, played key roles in U(VI) removal. In addition, reusability and desorption experiments demonstrated that the Fe–ZnO@BC/AnGS maintained U(VI) removal efficiencies above 80 % after five consecutive adsorption–desorption cycles. Overall, this study highlighted the strong potential of the Fe–ZnO@BC/AnGS system for the remediation of U(VI)-contaminated wastewater.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139755"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171081","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 : 2026-05-20Epub Date: 2026-01-25DOI: 10.1016/j.colsurfa.2026.139707
Nijat R. Gasimli , Hanif F. Yoga , Hamid Emami-Meybodi , Russell T. Johns
Accurate estimation of the optimum salinity is critical in many applications, including the design of effective surfactant flooding formulations. Although alcohol improves surfactant solubilization and interfacial behavior, its role is often simplified in existing optimum salinity correlations. This paper introduces an optimum salinity model that explicitly accounts for the alcohol volume fraction in surfactant–alcohol mixtures through multiplicative interaction coefficients among key formulation variables, including oil alkane carbon number (ACN), temperature (T), and alcohol fraction (CA). We conducted over 120 salinity scans (48 primary and 72 repetitive scans) using sodium dodecyl sulfate (SDS) (4.29 wt%) and n-butanol (17.16 wt%, 10.73 wt%, and 8.58 wt%) with a series of pure alkanes (n-heptane, n-octane, n-decane, and n-dodecane) across four temperatures of 21, 30, 45, and 60°C at a fixed water-oil ratio of one. Optimum salinities (S*) were determined from unbiased linear fits of the inverse of the three-phase solubilization data. Linear relationships are observed between lnS* and ACN, T, and CA. Although relationships are linear, the slopes were not always constant as other formulation variables changed, indicating potential interactions among CA, ACN, and T. Accordingly, we developed a multiplicative interaction model for optimum salinity, including all interaction terms to account for potential synergistic behavior. The results show a significant interaction between CA and ACN and a slight-to-moderate interaction between CA and T. All other interactions were negligible. Including these interactions improves the global fit of measured optimum salinity data by 23 % compared to the conventional linear additive model. Furthermore, errors of 100 % in the estimated optimum salinity are possible for alcohol fractions outside the range of experimental data.
{"title":"Multiplicative interaction model for optimum salinity in surfactant-alcohol-oil-water systems","authors":"Nijat R. Gasimli , Hanif F. Yoga , Hamid Emami-Meybodi , Russell T. Johns","doi":"10.1016/j.colsurfa.2026.139707","DOIUrl":"10.1016/j.colsurfa.2026.139707","url":null,"abstract":"<div><div>Accurate estimation of the optimum salinity is critical in many applications, including the design of effective surfactant flooding formulations. Although alcohol improves surfactant solubilization and interfacial behavior, its role is often simplified in existing optimum salinity correlations. This paper introduces an optimum salinity model that explicitly accounts for the alcohol volume fraction in surfactant–alcohol mixtures through multiplicative interaction coefficients among key formulation variables, including oil alkane carbon number (<em>ACN</em>), temperature (<em>T</em>), and alcohol fraction (<em>C</em><sub><em>A</em></sub>). We conducted over 120 salinity scans (48 primary and 72 repetitive scans) using sodium dodecyl sulfate (SDS) (4.29 wt%) and n-butanol (17.16 wt%, 10.73 wt%, and 8.58 wt%) with a series of pure alkanes (n-heptane, n-octane, n-decane, and n-dodecane) across four temperatures of 21, 30, 45, and 60°C at a fixed water-oil ratio of one. Optimum salinities (<em>S*</em>) were determined from unbiased linear fits of the inverse of the three-phase solubilization data. Linear relationships are observed between ln<em>S*</em> and <em>ACN</em>, <em>T</em>, and <em>C</em><sub><em>A</em></sub>. Although relationships are linear, the slopes were not always constant as other formulation variables changed, indicating potential interactions among <em>C</em><sub><em>A</em></sub>, <em>ACN</em>, and <em>T</em>. Accordingly, we developed a multiplicative interaction model for optimum salinity, including all interaction terms to account for potential synergistic behavior. The results show a significant interaction between <em>C<sub>A</sub></em> and <em>ACN</em> and a slight-to-moderate interaction between <em>C<sub>A</sub></em> and <em>T</em>. All other interactions were negligible. Including these interactions improves the global fit of measured optimum salinity data by 23 % compared to the conventional linear additive model. Furthermore, errors of 100 % in the estimated optimum salinity are possible for alcohol fractions outside the range of experimental data.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139707"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146045214","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 : 2026-05-20Epub Date: 2026-02-08DOI: 10.1016/j.colsurfa.2026.139889
Jixin Peng , Can Sheng , Xinya Ye , Han Xu , Duping Wang , Kang Xu , Yuanyuan Liao , Yan Qing , Yiqiang Wu
The practical implementation of urea oxidation reaction (UOR) for energy-saving hydrogen generation is hindered by the lack of efficient and robust non-precious electrocatalysts. Herein, we design a novel hybrid catalyst comprising nickel bicarbonate anchored on a Ni-modified graphitized carbonized wood substrate (Ni(HCO3)2-Ni/GCW). This architecture effectively overcomes the inherent kinetic limitations and stability challenges of UOR. The hierarchical porous network of the wood-derived carbon facilitates superior mass transport and exposes numerous sites for catalyst loading. Advanced characterization and density functional theory computations uncover the pivotal role of carbonate groups in Ni(HCO3)2, which function as non-innocent ligands to strengthen urea adsorption and ease CO2 product release, thereby significantly elevating UOR activity. Ni(HCO3)2-Ni/GCW combines a low UOR potential of 1.34 V (vs. RHE at 50 mA·cm−2) with outstanding operational stability. When assembled for overall urea splitting, the Pt/C||Ni(HCO3)2-Ni/GCW electrolyzer operates at 1.59 V to deliver 50 mA·cm−2, achieving a notable 230 mV reduction in the cell voltage relative to conventional water splitting (1.82 V). This research establishes a new paradigm for engineering stable and highly active UOR catalysts through the strategic integration of functional materials with renewable biomass-derived scaffolds.
{"title":"Constrain nickel bicarbonate within Ni-modified graphitized carbonized wood for efficient urea electro-oxidation","authors":"Jixin Peng , Can Sheng , Xinya Ye , Han Xu , Duping Wang , Kang Xu , Yuanyuan Liao , Yan Qing , Yiqiang Wu","doi":"10.1016/j.colsurfa.2026.139889","DOIUrl":"10.1016/j.colsurfa.2026.139889","url":null,"abstract":"<div><div>The practical implementation of urea oxidation reaction (UOR) for energy-saving hydrogen generation is hindered by the lack of efficient and robust non-precious electrocatalysts. Herein, we design a novel hybrid catalyst comprising nickel bicarbonate anchored on a Ni-modified graphitized carbonized wood substrate (Ni(HCO<sub>3</sub>)<sub>2</sub>-Ni/GCW). This architecture effectively overcomes the inherent kinetic limitations and stability challenges of UOR. The hierarchical porous network of the wood-derived carbon facilitates superior mass transport and exposes numerous sites for catalyst loading. Advanced characterization and density functional theory computations uncover the pivotal role of carbonate groups in Ni(HCO<sub>3</sub>)<sub>2</sub>, which function as non-innocent ligands to strengthen urea adsorption and ease CO<sub>2</sub> product release, thereby significantly elevating UOR activity. Ni(HCO<sub>3</sub>)<sub>2</sub>-Ni/GCW combines a low UOR potential of 1.34 V (vs. RHE at 50 mA·cm<sup>−2</sup>) with outstanding operational stability. When assembled for overall urea splitting, the Pt/C||Ni(HCO<sub>3</sub>)<sub>2</sub>-Ni/GCW electrolyzer operates at 1.59 V to deliver 50 mA·cm<sup>−2</sup>, achieving a notable 230 mV reduction in the cell voltage relative to conventional water splitting (1.82 V). This research establishes a new paradigm for engineering stable and highly active UOR catalysts through the strategic integration of functional materials with renewable biomass-derived scaffolds.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"737 ","pages":"Article 139889"},"PeriodicalIF":5.4,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146185348","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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