Pub Date : 2025-07-07DOI: 10.1016/j.colcom.2025.100852
Gyungbin Ju , Dongwon Kim , Hyungil Lee , Manhee Lee
Particle counting and sizing are essential in various fields of science and engineering. Most existing particle characterization methods rely on a rigorous analysis of nonlinear particle–light interactions. Here, we present a novel algebraic approach for counting and sizing colloidal particles. We construct a mathematical vector space in which the scattered signal distributions from the colloidal dispersions form vectors. These vectors are expanded using the basis vectors corresponding to the scattered signal distributions from particles of known sizes. We then determine the expansion coefficients that yield the number concentration as a function of particle size via mathematical optimization. Further, we experimentally evaluate the algebraic optics and find that the formalism accurately recovers the particle size and concentration. Thus, this algebraic method provides a means of quantifying particulate matter in fluids that are highly concentrated and difficult to measure individually and entirely.
{"title":"Linear algebraic characterization of particle concentration and size distribution","authors":"Gyungbin Ju , Dongwon Kim , Hyungil Lee , Manhee Lee","doi":"10.1016/j.colcom.2025.100852","DOIUrl":"10.1016/j.colcom.2025.100852","url":null,"abstract":"<div><div>Particle counting and sizing are essential in various fields of science and engineering. Most existing particle characterization methods rely on a rigorous analysis of nonlinear particle–light interactions. Here, we present a novel algebraic approach for counting and sizing colloidal particles. We construct a mathematical vector space in which the scattered signal distributions from the colloidal dispersions form vectors. These vectors are expanded using the basis vectors corresponding to the scattered signal distributions from particles of known sizes. We then determine the expansion coefficients that yield the number concentration as a function of particle size via mathematical optimization. Further, we experimentally evaluate the algebraic optics and find that the formalism accurately recovers the particle size and concentration. Thus, this algebraic method provides a means of quantifying particulate matter in fluids that are highly concentrated and difficult to measure individually and entirely.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"68 ","pages":"Article 100852"},"PeriodicalIF":4.7,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570133","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 : 2025-07-01DOI: 10.1016/j.colcom.2025.100848
Iaan Cho , Jiho Yang , Shimeles Shumi Raya , Bonggeun Shong
{"title":"Corrigendum to “Adsorption of aluminum precursors on MoS2 toward nucleation of atomic layer deposition” [Colloid and Interface Science Communications 65 (2025) 100823]","authors":"Iaan Cho , Jiho Yang , Shimeles Shumi Raya , Bonggeun Shong","doi":"10.1016/j.colcom.2025.100848","DOIUrl":"10.1016/j.colcom.2025.100848","url":null,"abstract":"","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100848"},"PeriodicalIF":4.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679436","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}
Quaternary-ammonium-salt-based surfactants are widely used as antibacterial agents and disinfectants. However, the factors affecting their antibacterial properties remain unclear. This study was aimed at investigating the relationship between antibacterial properties against Escherichia coli (E. coli) and Staphylococcus epidermidis (S. epidermidis) and wettability on polyethylene terephthalate (PET) surfaces. The analysis involved a quaternary-ammonium-salt-based gemini surfactant, and linear- and star-type trimeric surfactants. The gemini surfactant exhibited the highest antibacterial activities, likely due to its structural similarity to lipid molecules composing cell membranes. The linear-type trimeric surfactant exhibited higher antibacterial activity against E. coli than the star-type surfactant. Wettability analysis indicated that a correlation between increased surface adsorption on PET and enhanced antibacterial properties. Furthermore, the gemini and trimeric surfactants significantly inhibited S. epidermidis biofilm formation. This suggests that the strong interfacial adsorption of these surfactants, in addition to their ability to lower surface tension at the air/water interface, contributes to their antibiofilm properties.
{"title":"Antibacterial activity and interfacial adsorption properties of quaternary-ammonium-salt-based gemini and trimeric surfactants","authors":"Risa Kawai , Aya Furuichi , Shiho Yada , Hideyuki Kanematsu , Tomokazu Yoshimura","doi":"10.1016/j.colcom.2025.100850","DOIUrl":"10.1016/j.colcom.2025.100850","url":null,"abstract":"<div><div>Quaternary-ammonium-salt-based surfactants are widely used as antibacterial agents and disinfectants. However, the factors affecting their antibacterial properties remain unclear. This study was aimed at investigating the relationship between antibacterial properties against <em>Escherichia coli</em> (<em>E. coli</em>) and <em>Staphylococcus epidermidis</em> (<em>S. epidermidis</em>) and wettability on polyethylene terephthalate (PET) surfaces. The analysis involved a quaternary-ammonium-salt-based gemini surfactant, and linear- and star-type trimeric surfactants. The gemini surfactant exhibited the highest antibacterial activities, likely due to its structural similarity to lipid molecules composing cell membranes. The linear-type trimeric surfactant exhibited higher antibacterial activity against <em>E. coli</em> than the star-type surfactant. Wettability analysis indicated that a correlation between increased surface adsorption on PET and enhanced antibacterial properties. Furthermore, the gemini and trimeric surfactants significantly inhibited <em>S. epidermidis</em> biofilm formation. This suggests that the strong interfacial adsorption of these surfactants, in addition to their ability to lower surface tension at the air/water interface, contributes to their antibiofilm properties.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100850"},"PeriodicalIF":4.7,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365825","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 : 2025-06-21DOI: 10.1016/j.colcom.2025.100851
Yanhong Gu , Yuen Li , Kelan Wang , Lanlan Ge , Chenyue Mao , Weiying Zhang , Jianguo Zhao , Yaohua Hu , Xianghui Zhang , Wanping Chen , Yanmin Jia
TiO2 nanoparticles with high chemical stability, low cost and non-toxicity are attractive for large-scale catalytic applications. Non-piezoelectric amorphous TiO2 nanoparticles were experimentally developed for the efficient degradation of dyes under mechanical friction induced by low-speed stirring at 400 rpm. The friction between the catalyst surface and the rotating disk promotes the transition of valence-band electrons in TiO2, generating electron-hole pairs. These pairs subsequently react with hydroxide ions and dissolved oxygen in the dye solution to produce superoxide radicals and hydroxyl radicals, enabling the degradation of organic dyes under tribo-catalytic conditions. Al2O3 substrates were optimized compared to glass substrates. Non-piezoelectric amorphous TiO2 nanoparticles were mechanically stirred at 400 rpm for 2 h and 2.5 h. Under these conditions, high-concentration methyl orange (30 mg/L) and methylene blue (20 mg/L) degraded by 99 % and 100 %, respectively. The tribocatalytic performance achieved for TiO2 nanoparticles in this study is highly competitive for environmental remediation.
{"title":"Greatly enhanced tribocatalytic purification of concentrated dye wastewater by TiO2 nanoparticles through Ti and Al2O3 coatings","authors":"Yanhong Gu , Yuen Li , Kelan Wang , Lanlan Ge , Chenyue Mao , Weiying Zhang , Jianguo Zhao , Yaohua Hu , Xianghui Zhang , Wanping Chen , Yanmin Jia","doi":"10.1016/j.colcom.2025.100851","DOIUrl":"10.1016/j.colcom.2025.100851","url":null,"abstract":"<div><div>TiO<sub>2</sub> nanoparticles with high chemical stability, low cost and non-toxicity are attractive for large-scale catalytic applications. Non-piezoelectric amorphous TiO<sub>2</sub> nanoparticles were experimentally developed for the efficient degradation of dyes under mechanical friction induced by low-speed stirring at 400 rpm. The friction between the catalyst surface and the rotating disk promotes the transition of valence-band electrons in TiO<sub>2</sub>, generating electron-hole pairs. These pairs subsequently react with hydroxide ions and dissolved oxygen in the dye solution to produce superoxide radicals and hydroxyl radicals, enabling the degradation of organic dyes under tribo-catalytic conditions. Al<sub>2</sub>O<sub>3</sub> substrates were optimized compared to glass substrates. Non-piezoelectric amorphous TiO<sub>2</sub> nanoparticles were mechanically stirred at 400 rpm for 2 h and 2.5 h. Under these conditions, high-concentration methyl orange (30 mg/L) and methylene blue (20 mg/L) degraded by 99 % and 100 %, respectively. The tribocatalytic performance achieved for TiO<sub>2</sub> nanoparticles in this study is highly competitive for environmental remediation.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100851"},"PeriodicalIF":4.7,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331305","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 : 2025-06-18DOI: 10.1016/j.colcom.2025.100849
Mohammad Hossein Khoeini , Azahara Luna-Triguero , Maja Rücker
Nucleation of water on superhydrophobic surfaces is critical to applications such as water harvesting, thermal management, and energy systems. Despite their hierarchical roughness and hydrophobic nature, such surfaces can contain nano-scale hydrophilic sites that promote strong adhesion and disrupt droplet departure mechanisms, reducing condensation efficiency. Identifying and characterizing these confined sites is challenging due to the resolution limitations and operational constraints of conventional techniques. This study employs novel characterization techniques, Inverse Gas Chromatography (IGC) and Dynamic Vapor Sorption (DVS), to detect and characterize critical properties of these hydrophilic sites. IGC quantifies surface energy components and intrinsic wettability, while DVS and IGC at controlled relative humidity identify the nucleation onset. Furthermore, IGC under humidity control demonstrates the capability to precisely pinpoint nucleation onset, circumventing DVS’s mass sensitivity limitations. Collectively, these advanced methods provide more comprehensive understanding of surface heterogeneity and offer new insights into optimizing super-hydrophobic surfaces for enhanced condensation performance.
{"title":"Detecting nucleation of water in superhydrophobic PTFE powders using Inverse Gas Chromatography","authors":"Mohammad Hossein Khoeini , Azahara Luna-Triguero , Maja Rücker","doi":"10.1016/j.colcom.2025.100849","DOIUrl":"10.1016/j.colcom.2025.100849","url":null,"abstract":"<div><div>Nucleation of water on superhydrophobic surfaces is critical to applications such as water harvesting, thermal management, and energy systems. Despite their hierarchical roughness and hydrophobic nature, such surfaces can contain nano-scale hydrophilic sites that promote strong adhesion and disrupt droplet departure mechanisms, reducing condensation efficiency. Identifying and characterizing these confined sites is challenging due to the resolution limitations and operational constraints of conventional techniques. This study employs novel characterization techniques, Inverse Gas Chromatography (IGC) and Dynamic Vapor Sorption (DVS), to detect and characterize critical properties of these hydrophilic sites. IGC quantifies surface energy components and intrinsic wettability, while DVS and IGC at controlled relative humidity identify the nucleation onset. Furthermore, IGC under humidity control demonstrates the capability to precisely pinpoint nucleation onset, circumventing DVS’s mass sensitivity limitations. Collectively, these advanced methods provide more comprehensive understanding of surface heterogeneity and offer new insights into optimizing super-hydrophobic surfaces for enhanced condensation performance.</div></div>","PeriodicalId":10483,"journal":{"name":"Colloid and Interface Science Communications","volume":"67 ","pages":"Article 100849"},"PeriodicalIF":4.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306541","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 : 2025-05-27DOI: 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}
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