Pub Date : 2025-05-27DOI: 10.1016/j.colcom.2025.100845
Duowei Lu, Pedram Fatehi
Particle stability and coagulation are important aspects of colloidal systems. In the past, significant efforts have been made to simulate the interaction of particles for better design of colloidal systems and to improve processes dealing with colloidal systems. Despite their valuable analysis, past review papers discussed the interaction of smooth surfaces and particles. However, as particles have different surface morphologies, the interaction of particles and surfaces with rough surface morphologies is different from that of smooth particles. The present work summarized the numerical models for constructing particles and surfaces with different geometrical shapes. Also, it provides a comprehensive discussion of the modeling techniques used for understanding the interaction of particles with rough surface morphology in colloidal systems. It elaborates on the limitations and strengths of such mathematical simulations. Also, the current challenges, future directions, and potential application of such particles with different surfaces are described in this work comprehensively.
{"title":"Design of rough particles in colloidal systems","authors":"Duowei Lu, Pedram Fatehi","doi":"10.1016/j.colcom.2025.100845","DOIUrl":"10.1016/j.colcom.2025.100845","url":null,"abstract":"<div><div>Particle stability and coagulation are important aspects of colloidal systems. In the past, significant efforts have been made to simulate the interaction of particles for better design of colloidal systems and to improve processes dealing with colloidal systems. Despite their valuable analysis, past review papers discussed the interaction of smooth surfaces and particles. However, as particles have different surface morphologies, the interaction of particles and surfaces with rough surface morphologies is different from that of smooth particles. The present work summarized the numerical models for constructing particles and surfaces with different geometrical shapes. Also, it provides a comprehensive discussion of the modeling techniques used for understanding the interaction of particles with rough surface morphology in colloidal systems. It elaborates on the limitations and strengths of such mathematical simulations. Also, the current challenges, future directions, and potential application of such particles with different surfaces are described in this work comprehensively.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100845"},"PeriodicalIF":4.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-22DOI: 10.1016/j.colcom.2025.100843
Mohaned Hammad , Adil Amin , Cristian Ursu , Irina Rosca , Dragos Peptanariu , Liwei Qian , Valentin Nica , Sebastian Hardt , Hartmut Wiggers , Doris Segets
Bacterial infections, particularly those caused by drug-resistant strains, pose a significant global health threat. Photothermal therapy using iron-oxide nanoparticles shows promise in antibacterial treatments, but their use is limited by toxicity and nanoparticle agglomeration. This study presents a scalable spray-drying method to synthesize iron-oxide supraparticles, designed to enhance antibacterial efficacy while minimizing cytotoxicity. The iron-oxide supraparticles exhibited superior peroxidase-like activity compared to their nanoparticles, generating hydroxyl radicals through increased active sites. They demonstrated significant antibacterial activity against Escherichia coli and Staphylococcus aureus under near-infrared laser irradiation (1064 nm), achieving antibacterial rates of 77 % and 80 %, respectively, outperforming nanoparticles (25 % and 12 %). Their unique structure, with a larger diameter, rough surface, and internal porosity, contributed to improved antibacterial performance. Additionally, iron-oxide supraparticles maintained high cell viability in human dermal fibroblasts, confirming their biocompatibility. These supraparticles offer a promising approach for broad-spectrum antimicrobial applications without compromising host-cell viability.
{"title":"Hierarchical assembly of iron-oxide supraparticles for enhanced photothermal antibacterial activity","authors":"Mohaned Hammad , Adil Amin , Cristian Ursu , Irina Rosca , Dragos Peptanariu , Liwei Qian , Valentin Nica , Sebastian Hardt , Hartmut Wiggers , Doris Segets","doi":"10.1016/j.colcom.2025.100843","DOIUrl":"10.1016/j.colcom.2025.100843","url":null,"abstract":"<div><div>Bacterial infections, particularly those caused by drug-resistant strains, pose a significant global health threat. Photothermal therapy using iron-oxide nanoparticles shows promise in antibacterial treatments, but their use is limited by toxicity and nanoparticle agglomeration. This study presents a scalable spray-drying method to synthesize iron-oxide supraparticles, designed to enhance antibacterial efficacy while minimizing cytotoxicity. The iron-oxide supraparticles exhibited superior peroxidase-like activity compared to their nanoparticles, generating hydroxyl radicals through increased active sites. They demonstrated significant antibacterial activity against <em>Escherichia coli</em> and <em>Staphylococcus aureus</em> under near-infrared laser irradiation (1064 nm), achieving antibacterial rates of 77 % and 80 %, respectively, outperforming nanoparticles (25 % and 12 %). Their unique structure, with a larger diameter, rough surface, and internal porosity, contributed to improved antibacterial performance. Additionally, iron-oxide supraparticles maintained high cell viability in human dermal fibroblasts, confirming their biocompatibility. These supraparticles offer a promising approach for broad-spectrum antimicrobial applications without compromising host-cell viability.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100843"},"PeriodicalIF":4.7,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-20DOI: 10.1016/j.colcom.2025.100844
Jiaojiao Lv , Chong Zhang , Yang Yang , Xinting Dong , Dongming Qi , Jindan Wu
Ultra-high molecular weight polyethylene (UHMWPE), a promising material for high-strength sutures in bone repair, faces challenges due to its inert surface, limiting its biomedical applications. A one-pot approach was developed to apply a catechol (CA)/tobramycin (Tob)/poly(sulfobetaine methacrylate) (pSBMA) composite coating onto suture surfaces. During the redox reaction between Tob and CA, hydroxyl radicals were generated, initiating the polymerization of SBMA.The resulting coating not only reduces the surface roughness but also maintains sufficient mechanical strength of the fibers to withstand tissue tension during usage. Furthermore, the sutures exhibited good bactericidal and anti-bacteria adhesion properties, effectively preventing bacterial approaching and adhering, thereby reducing the infection rate at the surgical site. Additionally, the sutures demonstrated excellent biocompatibility and hemocompatibility. In conclusion, the modified UHMWPE fibers hold significant potential for application in orthopedic tissue repair. Moreover, this facile method for fabricating multifunctional coatings may provide new impetus for the development of biomedical materials.
{"title":"One-pot synthesis of catechol-based antibacterial coating for ultra-high molecular weight polyethylene sutures","authors":"Jiaojiao Lv , Chong Zhang , Yang Yang , Xinting Dong , Dongming Qi , Jindan Wu","doi":"10.1016/j.colcom.2025.100844","DOIUrl":"10.1016/j.colcom.2025.100844","url":null,"abstract":"<div><div>Ultra-high molecular weight polyethylene (UHMWPE), a promising material for high-strength sutures in bone repair, faces challenges due to its inert surface, limiting its biomedical applications. A one-pot approach was developed to apply a catechol (CA)/tobramycin (Tob)/poly(sulfobetaine methacrylate) (pSBMA) composite coating onto suture surfaces. During the redox reaction between Tob and CA, hydroxyl radicals were generated, initiating the polymerization of SBMA.The resulting coating not only reduces the surface roughness but also maintains sufficient mechanical strength of the fibers to withstand tissue tension during usage. Furthermore, the sutures exhibited good bactericidal and anti-bacteria adhesion properties, effectively preventing bacterial approaching and adhering, thereby reducing the infection rate at the surgical site. Additionally, the sutures demonstrated excellent biocompatibility and hemocompatibility. In conclusion, the modified UHMWPE fibers hold significant potential for application in orthopedic tissue repair. Moreover, this facile method for fabricating multifunctional coatings may provide new impetus for the development of biomedical materials.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100844"},"PeriodicalIF":4.7,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-20DOI: 10.1016/j.colcom.2025.100842
Roya Mohammadzadeh Kakhki
Self-repairing photocatalysts represent a groundbreaking advancement in photocatalysis, addressing key challenges such as catalyst degradation, material fatigue, and efficiency loss across diverse applications. Inspired by natural photosynthesis, these systems incorporate self-healing mechanisms that restore functionality and extend operational lifespans, even under harsh environmental conditions. This review delves into the fundamental principles, innovative design strategies, and emerging trends in self-repairing photocatalysts, emphasizing their transformative potential in sustainable fuel production, environmental remediation, and carbon fixation.
Key topics include molecular-level self-repair mechanisms, surface regeneration, bio-inspired adaptive interfaces, and multi-step repair strategies. Advanced characterization techniques, such as in situ monitoring and time-resolved spectroscopy, are highlighted for their role in optimizing self-healing processes. The synergy between photocatalytic activity and self-repair capabilities is explored through applications such as water splitting, CO₂ reduction, and wastewater treatment, showcasing systems that effectively mitigate degradation.Bio-inspired approaches, including peptide-based self-assembly and metal-organic frameworks, demonstrate exceptional stability and efficiency in photocatalytic systems. Additionally, cutting-edge molecular repair mechanisms, such as artificial enzyme cascades and dynamic covalent chemistry, are examined for their potential to enhance system longevity and performance. Advancements in real-time electron microscopy and AI-assisted degradation monitoring are also reviewed, offering insights into atomic-level repair processes and enabling predictive maintenance to sustain long-term functionality. The review further highlights the implementation of self-repairing photocatalysts in industrial-scale applications, including solar fuel production, CO₂ reduction, and wastewater treatment. Challenges related to scalability, cost-effectiveness, and long-term stability are addressed, with proposed solutions to overcome these barriers. Future research directions emphasize quantum dot-based self-repair systems, bio-hybrid catalysts, and AI-driven adaptive responses, paving the way for commercially viable, self-maintaining photocatalytic systems. These innovations hold immense promise for advancing sustainable energy production, environmental remediation, and carbon fixation, offering critical solutions to global sustainability challenges.
{"title":"Beyond photosynthesis: Engineering self-healing photocatalytic systems for sustainability","authors":"Roya Mohammadzadeh Kakhki","doi":"10.1016/j.colcom.2025.100842","DOIUrl":"10.1016/j.colcom.2025.100842","url":null,"abstract":"<div><div>Self-repairing photocatalysts represent a groundbreaking advancement in photocatalysis, addressing key challenges such as catalyst degradation, material fatigue, and efficiency loss across diverse applications. Inspired by natural photosynthesis, these systems incorporate self-healing mechanisms that restore functionality and extend operational lifespans, even under harsh environmental conditions. This review delves into the fundamental principles, innovative design strategies, and emerging trends in self-repairing photocatalysts, emphasizing their transformative potential in sustainable fuel production, environmental remediation, and carbon fixation.</div><div>Key topics include molecular-level self-repair mechanisms, surface regeneration, bio-inspired adaptive interfaces, and multi-step repair strategies. Advanced characterization techniques, such as in situ monitoring and time-resolved spectroscopy, are highlighted for their role in optimizing self-healing processes. The synergy between photocatalytic activity and self-repair capabilities is explored through applications such as water splitting, CO₂ reduction, and wastewater treatment, showcasing systems that effectively mitigate degradation.Bio-inspired approaches, including peptide-based self-assembly and metal-organic frameworks, demonstrate exceptional stability and efficiency in photocatalytic systems. Additionally, cutting-edge molecular repair mechanisms, such as artificial enzyme cascades and dynamic covalent chemistry, are examined for their potential to enhance system longevity and performance. Advancements in <em>real-time</em> electron microscopy and AI-assisted degradation monitoring are also reviewed, offering insights into atomic-level repair processes and enabling predictive maintenance to sustain long-term functionality. The review further highlights the implementation of self-repairing photocatalysts in industrial-scale applications, including solar fuel production, CO₂ reduction, and wastewater treatment. Challenges related to scalability, cost-effectiveness, and long-term stability are addressed, with proposed solutions to overcome these barriers. Future research directions emphasize quantum dot-based self-repair systems, bio-hybrid catalysts, and AI-driven adaptive responses, paving the way for commercially viable, self-maintaining photocatalytic systems. These innovations hold immense promise for advancing sustainable energy production, environmental remediation, and carbon fixation, offering critical solutions to global sustainability challenges.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100842"},"PeriodicalIF":4.7,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-19DOI: 10.1016/j.colcom.2025.100847
Jun Sun , Sulei Zhang , Yichen Wang , Denghai Sheng , Shengjie Liu , Yu Rao , Aiqing Li , Yuchun Pan , John L. Brash , Xiaoli Liu , Hong Chen
Thrombus formation often leads to the failure of intravascular implants. Natural endothelium provides multifaceted antithrombotic functions through nitric oxide/ prostacyclin secretion to inhibit platelet activation, glycosaminoglycan mediated anticoagulation, and tissue-type plasminogen activator driven fibrinolysis. Therefore, surfaces mimicking these multiple endothelial functions are expected to have enhanced antithrombotic properties. In this study, polyvinyl chloride surface was rendered porous through solvent/nonsolvent-induced phase separation and loaded with a metal-organic framework, CuBTTri to catalyze nitric oxide release from a precursor. Furthermore, using layer-by-layer self-assembly, multiple bilayers of a poly(lysine-co-oligo(ethylene glycol) methyl ether methacrylate) copolymer (fibrinolysis-promoting), and sodium heparin (endothelial cell growth-promoting), were deposited on the un-etched side of the polyvinyl chloride. This modified surface was shown to be capable of releasing nitric oxide, destroying nascent thrombus, inhibiting smooth muscle cell growth, and promoting endothelial cell adhesion. This study represents a novel approach to developing multifunctional blood-contacting surfaces that mimic multiple properties of the endothelium.
{"title":"A multifunctional endothelial-mimetic surface: Synergistically combating thrombus formation by releasing nitric oxide, promoting fibrinolysis, and enhancing endothelialization","authors":"Jun Sun , Sulei Zhang , Yichen Wang , Denghai Sheng , Shengjie Liu , Yu Rao , Aiqing Li , Yuchun Pan , John L. Brash , Xiaoli Liu , Hong Chen","doi":"10.1016/j.colcom.2025.100847","DOIUrl":"10.1016/j.colcom.2025.100847","url":null,"abstract":"<div><div>Thrombus formation often leads to the failure of intravascular implants. Natural endothelium provides multifaceted antithrombotic functions through nitric oxide/ prostacyclin secretion to inhibit platelet activation, glycosaminoglycan mediated anticoagulation, and tissue-type plasminogen activator driven fibrinolysis. Therefore, surfaces mimicking these multiple endothelial functions are expected to have enhanced antithrombotic properties. In this study, polyvinyl chloride surface was rendered porous through solvent/nonsolvent-induced phase separation and loaded with a metal-organic framework, CuBTTri to catalyze nitric oxide release from a precursor. Furthermore, using layer-by-layer self-assembly, multiple bilayers of a poly(lysine-<em>co</em>-oligo(ethylene glycol) methyl ether methacrylate) copolymer (fibrinolysis-promoting), and sodium heparin (endothelial cell growth-promoting), were deposited on the un-etched side of the polyvinyl chloride. This modified surface was shown to be capable of releasing nitric oxide, destroying nascent thrombus, inhibiting smooth muscle cell growth, and promoting endothelial cell adhesion. This study represents a novel approach to developing multifunctional blood-contacting surfaces that mimic multiple properties of the endothelium.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100847"},"PeriodicalIF":4.7,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-09DOI: 10.1016/j.colcom.2025.100841
Zehong Tian , Yufeng Zhang , Bei Liu , Lingke Li , Mingyu Li , Enze Zhou , Yameng Qi , Yalin Wu , Zhilin Li , Zishuai Zhou , Miaomiao Cui , Fuhui Wang , Dake Xu
Novel Cr-alloyed pipeline steels were developed, demonstrating exceptional resistance to microbiologically influenced corrosion (MIC). Particularly, the 5.0Cr steel exhibited remarkable mechanical properties with ultimate tensile strength reaching 878 MPa (1.25-fold higher than conventional X80 steel) while maintaining the elongation. In Shewanella oneidensis MR-1-containing environments, 5.0Cr steel displayed significantly lower corrosion metrics: weight loss (0.8 ± 0.3 mg cm−2 vs. 18.1 ± 2.9 mg cm−2 for X80 steel) and maximum pit depth (4.9 μm vs. 18.8 μm). This enhanced MIC resistance stems from a Cr-rich oxide layer that simultaneously inhibits bacterial adhesion (50 % biofilm thickness reduction) and restricts extracellular electron transfer (EET), as evidenced by 14-fold higher charge transfer resistance (30 kΩ cm2 vs. 2 kΩ cm2 for X80 steel). The findings establish a dual-protection mechanism through interfacial engineering of pipeline steel surfaces.
新型的铬合金管线钢被开发出来，表现出优异的抗微生物影响腐蚀（MIC）能力。在保持伸长率的同时，5.0Cr钢的抗拉强度达到878 MPa，是普通X80钢的1.25倍。在含有希瓦氏菌mr -1的环境中，5.0Cr钢的腐蚀指标显著降低：重量损失（0.8±0.3 mg cm - 2， X80钢为18.1±2.9 mg cm - 2）和最大坑深（4.9 μm， X80钢为18.8 μm）。这种增强的MIC抗性源于富cr氧化层，它同时抑制细菌粘附（生物膜厚度减少50%）并限制细胞外电子转移（EET），如14倍的电荷转移电阻（30 kΩ cm2比X80钢的2 kΩ cm2）所证明的那样。研究结果通过管道钢表面的界面工程建立了一种双重保护机制。
{"title":"Enhanced microbiologically influenced corrosion resistance of 5Cr pipeline steel in the presence of Shewanella oneidensis MR-1","authors":"Zehong Tian , Yufeng Zhang , Bei Liu , Lingke Li , Mingyu Li , Enze Zhou , Yameng Qi , Yalin Wu , Zhilin Li , Zishuai Zhou , Miaomiao Cui , Fuhui Wang , Dake Xu","doi":"10.1016/j.colcom.2025.100841","DOIUrl":"10.1016/j.colcom.2025.100841","url":null,"abstract":"<div><div>Novel Cr-alloyed pipeline steels were developed, demonstrating exceptional resistance to microbiologically influenced corrosion (MIC). Particularly, the 5.0Cr steel exhibited remarkable mechanical properties with ultimate tensile strength reaching 878 MPa (1.25-fold higher than conventional X80 steel) while maintaining the elongation. In <em>Shewanella oneidensis</em> MR-1-containing environments, 5.0Cr steel displayed significantly lower corrosion metrics: weight loss (0.8 ± 0.3 mg cm<sup>−2</sup> vs. 18.1 ± 2.9 mg cm<sup>−2</sup> for X80 steel) and maximum pit depth (4.9 μm vs. 18.8 μm). This enhanced MIC resistance stems from a Cr-rich oxide layer that simultaneously inhibits bacterial adhesion (50 % biofilm thickness reduction) and restricts extracellular electron transfer (EET), as evidenced by 14-fold higher charge transfer resistance (30 kΩ cm<sup>2</sup> vs. 2 kΩ cm<sup>2</sup> for X80 steel). The findings establish a dual-protection mechanism through interfacial engineering of pipeline steel surfaces.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100841"},"PeriodicalIF":4.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143924364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-02DOI: 10.1016/j.colcom.2025.100840
Xinpeng Liu , Dini Lin , Shan Peng , Ronghua Yu , Bailong Tao , Lin Du , Hong Zheng , Xinkun Shen , Yonglin Yu
Elderly fracture healing is significantly impaired by oxidative stress-induced vascular dysfunction. This study investigates the effects of 110 nm titanium dioxide nanotubes (TNT110) on macrophage polarization and endothelial cell vascularization under oxidative stress. Under H2O2-induced oxidative stress, RAW264.7 macrophages cultured on TNT110 exhibit enhanced M1 polarization, with significantly upregulated M1 marker expression versus the Ti group. Conditioned medium from TNT110-stimulated macrophages markedly promoted HUVEC migration and tube formation by activating the ERK/Akt signaling pathway. In vivo, TNT110 implants demonstrate superior neovascularization (CD31+ areas) and bone regeneration compared to pure titanium. These findings suggest that TNT110 enhances vascular and bone tissue regeneration under oxidative stress by modulating macrophage polarization and endothelial cell signaling pathways.
{"title":"Influence of titanium dioxide nanotubes on macrophage polarization and endothelial cell vascularisation under oxidative stress microenvironment","authors":"Xinpeng Liu , Dini Lin , Shan Peng , Ronghua Yu , Bailong Tao , Lin Du , Hong Zheng , Xinkun Shen , Yonglin Yu","doi":"10.1016/j.colcom.2025.100840","DOIUrl":"10.1016/j.colcom.2025.100840","url":null,"abstract":"<div><div>Elderly fracture healing is significantly impaired by oxidative stress-induced vascular dysfunction. This study investigates the effects of 110 nm titanium dioxide nanotubes (TNT<sub>110</sub>) on macrophage polarization and endothelial cell vascularization under oxidative stress. Under H<sub>2</sub>O<sub>2</sub>-induced oxidative stress, RAW264.7 macrophages cultured on TNT<sub>110</sub> exhibit enhanced M1 polarization, with significantly upregulated M1 marker expression versus the Ti group. Conditioned medium from TNT<sub>110</sub>-stimulated macrophages markedly promoted HUVEC migration and tube formation by activating the ERK/Akt signaling pathway. In vivo, TNT<sub>110</sub> implants demonstrate superior neovascularization (CD31<sup>+</sup> areas) and bone regeneration compared to pure titanium. These findings suggest that TNT<sub>110</sub> enhances vascular and bone tissue regeneration under oxidative stress by modulating macrophage polarization and endothelial cell signaling pathways.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100840"},"PeriodicalIF":4.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-05-02DOI: 10.1016/j.colcom.2025.100839
Jun Wang , Haofeng Sun , Zhijing Han , Mengjia Dou , Haitao Hu , He Cheng , Chunyong He , Zhenhua Xie , Hanqiu Jiang , Naisheng Jiang , Xin Tong , Yubin Ke , Hua Yang
Interplay between self-assembly and phase behaviors for block copolymer under external force is one of the significant research directions in materials science. Rheo-small-angle neutron scattering (Rheo-SANS) is a powerful in situ tool that enables the investigation of this subject. Herein, we present the installation and commissioning of the Rheo-SANS instrument, in conjunction with an Anton-Paar MCR 302e rheometer, at the small-angle neutron scattering beamline (BL01) of the China Spallation Neutron Source (CSNS). We provide a detailed description of the design, construction and technical specifications of the Rheo-SANS instrument. Taking advantage of this newly built Rheo-SANS facility, we are able to investigate the phase transformation behavior of block copolymer under external shear force, which is otherwise impossible for traditional characterization methods. We demonstrate through Rheo-SANS experiment that for block copolymer with small packing parameter (Pluronic F127), shear force can cause orientation of the Hcp phase in solid-like state. While in liquid-like state, shear force hardly orients the system. On the contrary, for block copolymer with large packing parameter (Pluronic L64), shear force can easily cause orientation of the lamella phase in liquid-like state, while in solid-like state, much large shear force is needed to induce the orientation of the lamella phase.
{"title":"In-situ investigation of shear force induced solution phase transformation of ABA-type tri-block copolymers","authors":"Jun Wang , Haofeng Sun , Zhijing Han , Mengjia Dou , Haitao Hu , He Cheng , Chunyong He , Zhenhua Xie , Hanqiu Jiang , Naisheng Jiang , Xin Tong , Yubin Ke , Hua Yang","doi":"10.1016/j.colcom.2025.100839","DOIUrl":"10.1016/j.colcom.2025.100839","url":null,"abstract":"<div><div>Interplay between self-assembly and phase behaviors for block copolymer under external force is one of the significant research directions in materials science. Rheo-small-angle neutron scattering (Rheo-SANS) is a powerful in situ tool that enables the investigation of this subject. Herein, we present the installation and commissioning of the Rheo-SANS instrument, in conjunction with an Anton-Paar MCR 302e rheometer, at the small-angle neutron scattering beamline (BL01) of the China Spallation Neutron Source (CSNS). We provide a detailed description of the design, construction and technical specifications of the Rheo-SANS instrument. Taking advantage of this newly built Rheo-SANS facility, we are able to investigate the phase transformation behavior of block copolymer under external shear force, which is otherwise impossible for traditional characterization methods. We demonstrate through Rheo-SANS experiment that for block copolymer with small packing parameter (Pluronic F127), shear force can cause orientation of the Hcp phase in solid-like state. While in liquid-like state, shear force hardly orients the system. On the contrary, for block copolymer with large packing parameter (Pluronic L64), shear force can easily cause orientation of the lamella phase in liquid-like state, while in solid-like state, much large shear force is needed to induce the orientation of the lamella phase.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100839"},"PeriodicalIF":4.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-24DOI: 10.1016/j.colcom.2025.100838
Maoxiang Chen , Chunying Dong , Haifeng Chen , Yuan Li , Meiqiang Cai , Yan Chen , Micong Jin
In the process of nitrate reduction by nano zero-valent iron (nZVI), the preparation of nZVI/sludge biochar (nZVI/SBC) by introducing SBC will help to improve the aggregation and low nitrogen selectivity. Herein, the pyrolysis temperature of SBC was changed, and the excellent reduction capacity with the minimum charge transfer resistance were obtained at 300 °C. In addition, nZVI/SBC prepared with a mass ratio of 1:1 obtained a nitrate removal efficiency of 95.23 % and a nitrogen selectivity of 35.33 %. The corrosion of Fe0 at the appropriate ratio provided sufficient electrons for the reduction, and the further transformation into Fe3O4 promoted the outward transport of electrons. The electrons were transferred to the solid surface through the SBC, which promoted the accumulation and collision of nitrogen intermediates and induced the production of nitrogen. The nitrate removal efficiency of nZVI/SBC remained above 66 % in the wide pH range (3.0–11.0), which demonstrated practical nitrate remediation capabilities.
{"title":"Enhanced electron transport and selective reduction of nitrate to nitrogen by sludge biochar-supported nanoscale zero-valent iron","authors":"Maoxiang Chen , Chunying Dong , Haifeng Chen , Yuan Li , Meiqiang Cai , Yan Chen , Micong Jin","doi":"10.1016/j.colcom.2025.100838","DOIUrl":"10.1016/j.colcom.2025.100838","url":null,"abstract":"<div><div>In the process of nitrate reduction by nano zero-valent iron (nZVI), the preparation of nZVI/sludge biochar (nZVI/SBC) by introducing SBC will help to improve the aggregation and low nitrogen selectivity. Herein, the pyrolysis temperature of SBC was changed, and the excellent reduction capacity with the minimum charge transfer resistance were obtained at 300 °C. In addition, nZVI/SBC prepared with a mass ratio of 1:1 obtained a nitrate removal efficiency of 95.23 % and a nitrogen selectivity of 35.33 %. The corrosion of Fe<sup>0</sup> at the appropriate ratio provided sufficient electrons for the reduction, and the further transformation into Fe<sub>3</sub>O<sub>4</sub> promoted the outward transport of electrons. The electrons were transferred to the solid surface through the SBC, which promoted the accumulation and collision of nitrogen intermediates and induced the production of nitrogen. The nitrate removal efficiency of nZVI/SBC remained above 66 % in the wide pH range (3.0–11.0), which demonstrated practical nitrate remediation capabilities.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100838"},"PeriodicalIF":4.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-04-18DOI: 10.1016/j.colcom.2025.100837
Shaveen Fernando, Surita R. Bhatia
This work explores stratification, a prescribed spatial variation of components in a multi-component film, in particle-polymer films prepared by a single-step evaporative drying technique. Our overall goal is to develop a more efficient and cost-effective way to create vertically structured multi-component polymer and colloid films. Films containing poly(acrylic acid) (PAA) chains and polystyrene (PS) colloidal nanoparticles were analyzed using microbeam small-angle X-ray scattering (SAXS) and atomic force microscopy (AFM) to probe the impact of evaporation rates and colloid sizes on stratification behavior. Under slow drying conditions, particle-on-top stratification was observed, consistent with a diffusive model of stratification behavior. Conversely, moderate evaporation rates resulted in non-stratified configurations for certain mixtures. Fast evaporation, achieved by drying at elevated temperatures, induced polymer-on-top stratification, which aligns with predictions from simulations. Overall, this study proposes a more efficient method for creating vertically structured films, with implications for various industries.
{"title":"Scalable manufacturing of layered nanoparticle-polymer composite films through evaporative assembly","authors":"Shaveen Fernando, Surita R. Bhatia","doi":"10.1016/j.colcom.2025.100837","DOIUrl":"10.1016/j.colcom.2025.100837","url":null,"abstract":"<div><div>This work explores stratification, a prescribed spatial variation of components in a multi-component film, in particle-polymer films prepared by a single-step evaporative drying technique. Our overall goal is to develop a more efficient and cost-effective way to create vertically structured multi-component polymer and colloid films. Films containing poly(acrylic acid) (PAA) chains and polystyrene (PS) colloidal nanoparticles were analyzed using microbeam small-angle X-ray scattering (SAXS) and atomic force microscopy (AFM) to probe the impact of evaporation rates and colloid sizes on stratification behavior. Under slow drying conditions, particle-on-top stratification was observed, consistent with a diffusive model of stratification behavior. Conversely, moderate evaporation rates resulted in non-stratified configurations for certain mixtures. Fast evaporation, achieved by drying at elevated temperatures, induced polymer-on-top stratification, which aligns with predictions from simulations. Overall, this study proposes a more efficient method for creating vertically structured films, with implications for various industries.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"66 ","pages":"Article 100837"},"PeriodicalIF":4.7,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143847896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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