Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献

{"title":"Full biomass-based polylactic acid (PLA) aerogel with robust flame retardancy and long-term early fire warning","authors":"Siqi Wang ,&nbsp;Guoli Yan ,&nbsp;Yaduo Zheng ,&nbsp;Yunhong Jiao ,&nbsp;Jianzhong Xu ,&nbsp;Haiyun Ma","doi":"10.1016/j.colsurfa.2025.136811","DOIUrl":"10.1016/j.colsurfa.2025.136811","url":null,"abstract":"<div><div>Currently, developing environmentally friendly materials with fire warning capabilities is an attractive topic in the field of flame retardant. This study uses the biomass-derived material polylactic acid (PLA) as a matrix, and hydroxyapatite (HA) and phytic acid (PA) as flame retardants, to prepare a fully biomass aerogel (P-HA-PA) with excellent flame retardancy and thermal insulation properties. The limiting oxygen index (LOI) of the P-HA-PA aerogel is 38.9 %, which meets the vertical burning test (UL-94) V-0 rating and has good insulation and drip resistance. Compared to pure PLA aerogel, the total heat release (THR) of P-HA-PA is reduced by 60 %, and the total smoke production (TSP) is reduced by about 70 %. Additionally, the aerogel exhibits an ultra-long fire response time upon contact with flames. The composite aerogel prepared in this study shows great potential application value in fire protection and early warning</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136811"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747073","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}

{"title":"Modulation of composite energetic microunit structure and performance: Synergistic effects of microdroplets and binders","authors":"Wenyu Wu,&nbsp;Dongqian Fan,&nbsp;Xiaojuan Fu,&nbsp;Wenjie Liu,&nbsp;Xiaodong Li,&nbsp;Shuangqi Hu","doi":"10.1016/j.colsurfa.2025.136810","DOIUrl":"10.1016/j.colsurfa.2025.136810","url":null,"abstract":"<div><div>Modulating the structure of composite energetic microunits (CEMs) is an effective strategy for improving component homogeneity and safety. In this study, controlled construction of four different HMX/TATB composite microstructures, namely, erythrocyte-like, apple-like, spherical, and cobble-like, using a relatively open coaxial microdroplet template. Based on the theory of synergistic self-assembly between microdroplets and binders, CEMs with tunable structures and particle sizes were successfully prepared. The self-assembly mechanism underlying the formation of CEMs with controllable microstructures was elucidated. The effects of different binder systems on the morphology, structure, and properties of the CEMs were systematically investigated. The results indicate that optimizing the binder system effectively regulates the morphology and structure of the microunits, resulting in high sphericity, narrow particle size distribution, excellent flowability, and high packing density. In addition, binder modulation resulted in varying degrees of improvement in thermal stability and combustion performance. Compared with irregular samples, the self-assembled composite microspheres exhibited more regular morphology, enhanced thermal stability, improved safety, and superior combustion performance. These findings highlight the critical role of binder modulation in controlling microstructure and tuning material properties. Unlike previous reports, this study expands the application of microdroplet technology in composite energetic materials. It proposes a new approach for the synergistic and controllable construction of different microstructure composite particles using microdroplets and binders, providing valuable insights for the structural design and performance optimization of other energetic materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136810"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747072","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}

{"title":"One-pot and single-component fabrication of multifunctional cotton fabrics with antibacterial and hydrophobic properties using a block copolymer","authors":"Liwen Shen ,&nbsp;Jun Liu ,&nbsp;Shuangfei Xiang ,&nbsp;Chunyan Wu ,&nbsp;Shujun Zhao ,&nbsp;Feiya Fu ,&nbsp;Fang Xu ,&nbsp;Guokang Shen ,&nbsp;Xiangdong Liu","doi":"10.1016/j.colsurfa.2025.136780","DOIUrl":"10.1016/j.colsurfa.2025.136780","url":null,"abstract":"<div><div>Multifunctional cotton fabrics have attracted considerable attention due to their versatility and adaptability in various areas of everyday life. Nevertheless, the one-pot fabrication of multifunctional textiles using only a single reagent remains extremely challenging. This approach streamlines the conventional multi-functionalization process and forges novel trajectories for the development of high-performance textile materials enabled by a solitary reagent. Herein, we propose a straightforward approach that uses an innovative block copolymer as the finishing reagent to provide simultaneously both antibacterial and hydrophobic properties to cotton fabrics. The block copolymer was synthesized via a RAFT polymerization of methacrylate (MMA) and dimethylaminoethyl methacrylate (DMA) followed by a quaternization using bromohexadecane. Afterward, the block copolymer underwent self-assembly, resulting in the formation of an aqueous emulsion, which was then applied onto cotton fiber surfaces using an immersion heating process. Characterized by an abundance of particles with a 195-nm average size, the surface morphology of the resulting coating on the fibers imparted highly enduring and effective antibacterial, self-cleaning, and antifouling functionalities to the cotton fabrics. Furthermore, to elucidate the excellent antibacterial effect, an innovative contact-responsive mechanism involving the dynamic action of the copolymer was proposed. With its exceptional versatility and efficiency, this one-pot approach shows great promise for a wide range of industrial applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136780"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747615","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}

{"title":"A facile surface modification of ammonium polyphosphate with boron-based compound to reduce its particle size and improve the flame retardancy and anti-dripping of polylactic acid resin","authors":"Shengchao Huang ,&nbsp;Xiaosui Chen ,&nbsp;Yuhang Huang ,&nbsp;Yipei Zhang ,&nbsp;Shuzheng Liu ,&nbsp;Aiqing Zhang ,&nbsp;Wei Liu","doi":"10.1016/j.colsurfa.2025.136781","DOIUrl":"10.1016/j.colsurfa.2025.136781","url":null,"abstract":"<div><div>Polylactic acid (PLA) resin has inherent deficiencies like high flammability and severe melt-dripping, which limit its wide application. To address these issues, a novel APP-based flame retardant (MAPP) with reduced particle size was facilely fabricated by grafting 9, 10-Dihydro −9-oxa −10-phosphaphenanthrene −10-oxide (DOPO) and 4-formylphenylboronic acid (FPBA) onto the surface of raw APP via an ion exchange reaction, achieving a high char yield of 31.3 % in N₂ atmosphere. The synergistic effects of phosphorus-, nitrogen- and boron-containing compounds improved the flame retardancy and anti-dripping performance of PLA/MAPP composites efficiently. Notably, the PLA/6 %MAPP composite exhibited the highest limiting oxygen index (LOI) value of 30.1 % and a UL-94 V-0 rating without melt dripping. Its cone calorimeter results also presented the lowest peak heat release rate (PHRR) and total heat release (THR), which were 19.8 % and 23.2 % lower than those in pure PLA, respectively. The gas- and condensed-phase product analysis revealed combined flame retardancy mechanisms including inert gas dilution, free-radical quenching, catalytic charring, and physical barrier effect. Importantly, the incorporation of MAPP did not significantly compromise the tensile strength (92.0 % of pure PLA) but enhanced the impact strength (31.9 %) of the relating PLA composites. This favorable balance between flame retardancy and mechanical properties in PLA/MAPP composites offers a viable approach to broaden the practical application of PLA.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136781"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740127","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}

{"title":"In-situ polymerization strategy for conductive polymer poly(3,4-ethylenedioxythiophene) on bimetallic MOF to enhance electrochemical detection of toxic hydroquinone in industrial wastewater and tap water","authors":"Ming Sun ,&nbsp;Li Zhang ,&nbsp;Shaobin Li ,&nbsp;Fengbo Li ,&nbsp;Yu Han ,&nbsp;Tingting Yu ,&nbsp;Zixu Lin","doi":"10.1016/j.colsurfa.2025.136793","DOIUrl":"10.1016/j.colsurfa.2025.136793","url":null,"abstract":"<div><div>Hydroquinone is an organic pollutant that poses significant risks to the environment and human health, rapid and effective monitoring is essential. In this work, a simple and efficient electrochemical sensor based on poly(3,4-ethylenedioxythiophene) coated onto a bimetallic metal-organic framework (ZnCo-ZIF-67) was constructed by using an in-situ polymerization strategy at room temperature. The electrochemical sensor demonstrates excellent performance with a broad linear range (2–212 μM, 212–662 μM), high sensitivity (0.51 μA·μM⁻¹·cm⁻²), and a low limit of detection of 0.468 μM. The sensor exhibits excellent selectivity, repeatability, reproducibility, and anti-interference performance. Moreover, it effectively detects hydroquinone in both tap water and industrial wastewater, achieving recoveries ranging from 97.30 % to 102.83 %, with relative standard deviations (RSD) below 3.80 %. These results highlight the significant potential of the sensor for monitoring hydroquinone in environmental water systems.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136793"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740128","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}

{"title":"Interfacial competitive behavior of water/oil/surfactant systems in ultra-deep tight reservoir – Insights from dissipative particle dynamics","authors":"Shun Liu ,&nbsp;Ying Qiu ,&nbsp;Jianbin Liu ,&nbsp;Xin Chen ,&nbsp;Long He ,&nbsp;Yao Wang ,&nbsp;Xin Li ,&nbsp;Luyao Chao ,&nbsp;Bing Yang ,&nbsp;Tao Liu","doi":"10.1016/j.colsurfa.2025.136766","DOIUrl":"10.1016/j.colsurfa.2025.136766","url":null,"abstract":"<div><div>The high-temperature and high-pressure characteristics of ultra-deep reservoirs pose significant challenges to studying their efficient development mechanisms, and conventional experimental research struggles to unravel the complex interaction mechanisms between oil, water, and chemicals at the molecular and interfacial levels. To address this, Dissipative particle dynamics (DPD) simulations were employed to delve into oil/water interfacial adsorption behaviors and influencing factors of ultra-deep tight reservoir. Initially, the interfacial dynamics, adsorption characteristics of crude oil components, and interfacial properties were studied. Further, the competitive adsorption dynamics at interface of surfactants and active crude oil components were analyzed. This comprehensive analysis encompasses interfacial dynamics, competitive adsorption characteristics, and interfacial properties, shedding light on the factors modulating these properties. In oil-water systems, resin and asphaltene migrate towards the interface under the influence of hydrogen bonding and heteroatoms, forming a stable interfacial film. The interfacial activity of crude oil components follows a specific order: asphaltene &gt; resin &gt; aromatic &gt; saturated. As temperature increase, molecular thermal motion intensifies, extending interfacial stability time but also enhancing adsorption capacity of resin and asphaltene. This results in increased adsorption density, expanded interface thickness, and reduced Interfacial Tension (IFT). Moreover, this study finds that increasing the oil-water ratio prolongs the time to interfacial stability, yet IFT remains stable. In contrast to crude oil components, surfactants preferentially occupy the oil-water interface. However, resin and asphaltene also demonstrate a degree of competitive adsorption. As surfactant concentration increases, adsorption density rises, leading to decreased IFT. Upon reaching adsorption saturation, the interface undergoes structural changes to accommodate additional adsorption sites. Elevated temperatures further intensify molecular thermal motion, amplifying competitive interfacial adsorption and extending interfacial stability. Conversely, decreasing the oil-water ratio enhances the proportion of surfactant molecules at interface, resulting in reduced interfacial stability time and IFT.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136766"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740007","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}

{"title":"Innovative bio-based bamboo adhesive: Performance breakthrough through the host-guest interaction of cyclodextrin and adamantane","authors":"Weibing Xue ,&nbsp;Rui Zhao ,&nbsp;Tongda Liu ,&nbsp;Xin Ran ,&nbsp;Rong Liu ,&nbsp;Tonghua Lu ,&nbsp;Renzhong Wei ,&nbsp;Guanben Du ,&nbsp;Jun Li ,&nbsp;Long Yang","doi":"10.1016/j.colsurfa.2025.136765","DOIUrl":"10.1016/j.colsurfa.2025.136765","url":null,"abstract":"<div><div>Recently, the use of agricultural, forestry, and fishery residues and wastes to develop green and environmentally friendly bio-based adhesives has gradually become the industry development trend and is an effective technical path to implement energy saving, environmental protection, and achieve sustainable development. The present work cleverly leverages the unique advantages of bio-based chitosan and 1-adamantane carboxylic acid to develop an innovative adamantane-chitosan bamboo adhesive through an amidation reaction. Meanwhile, sulfhydryl-functionalized cyclodextrins were prepared, and the cyclodextrin host molecules were successfully anchored to the bamboo surface through bridging 3-mercaptopropyltrimethoxysilane. During the bonding process, the adamantane guest molecules on the adhesive and the cyclodextrin host molecules on the bamboo surface were subject-guest recognized, resulting in the construction of a host-guest chemical bonding interface to achieve a breakthrough in bonding performance. The dry, hot, and boiling water strength of the bamboo bonded specimens without the formation of supramolecular bonding interface were 7.8, 6.4, and 4.9 MPa, respectively. After constructing the supramolecular bonding interface, the dry, hot, and boiling water strengths were enhanced by 37.2 %, 12.5 %, and 30.6 % to 10.7 MPa, 7.2 MPa, and 6.4 MPa, respectively. The results demonstrated that the host-guest recognition in the supramolecular bonding interface effectively enhanced the bonding performance. The present work utilizes biomass materials and supramolecular forces to achieve high-performance bonding of substrates, breaking the bonding performance enhancement mechanism of traditional adhesives and providing a new way for technological innovation in the field of bonding.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"716 ","pages":"Article 136765"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746204","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}

{"title":"Highly efficient removal of Mn(II) and organic pollutant by adipate functionalized Ca-Al layered double hydroxides: Capture behavior and mechanism","authors":"Yang Zhang ,&nbsp;Hanjun Wu ,&nbsp;Zhenyue Zhang ,&nbsp;Wenda Guo ,&nbsp;Junxia Yu ,&nbsp;Rongying Zeng ,&nbsp;Ruan Chi ,&nbsp;Zhiquan Pan","doi":"10.1016/j.colsurfa.2025.136774","DOIUrl":"10.1016/j.colsurfa.2025.136774","url":null,"abstract":"<div><div>In this work, Ca-Al LDHs were modified via co-precipitation method utilizing two distinct chemical forms of adipic acid (adipate salt and adipic acid) as intercalation agents, with the resulting materials denoted as At-LDHs (adipate-intercalated LDHs) and Aa-LDHs (adipic acid-intercalated LDHs). The results indicated that At-LDHs and Aa-LDHs all exhibit a sheet-like porous structure stacked with each other. Due to the different synthesis conditions, the sheet structure of Aa-LDHs is smaller than that of At-LDHs. The kinetic and isotherm simulation results indicated that the capture capacity of At-LDHs for Mn^2 + was up to 227.53 mg·g⁻¹ when the pH value was 7, while that of Aa-LDHs for naphthol green B reached to 132.73 mg·g⁻¹ at a pH value of 9. The kinetic and thermodynamic simulation results indicated that the capture of Mn²⁺ by At-LDHs conformed to the pseudo-first-order kinetic model and the Langmuir isotherm model, and the capture of naphthol green B by Aa-LDHs conformed to the Elovich kinetic model and the Temkin isotherm model. In addition, the capture process of both was a spontaneous exothermic reaction. Benefiting from the excellent adsorption properties of At-LDHs composites (Ion exchange, electrostatic attraction, adsorption precipitation, functional group chelation), the adsorption effect on Mn²⁺ was better. Aa-LDHs have good adsorption effect on naphthol green B in solution through electrostatic attraction, dipole-dipole hydrogen bond, Yoshida hydrogen bond and n-π interaction. At-LDHs and Aa-LDHs have great potential to be employed as the materials for the removal of organic and inorganic composite pollutants from wastewater.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136774"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747617","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}

{"title":"Macromolecular pore model construction and theoretical study of Inner Mongolia Long-flame coal","authors":"Xiangjun Chen ,&nbsp;Peiqi Zuo ,&nbsp;Rui Min ,&nbsp;Guixin Zhang ,&nbsp;San Zhao","doi":"10.1016/j.colsurfa.2025.136772","DOIUrl":"10.1016/j.colsurfa.2025.136772","url":null,"abstract":"<div><div>Studying the sorption and wettability behavior of coal by molecular simulation requires an understanding of its molecular structural characteristics. Herein, a plane molecular model of coal in the Ordos region of Inner Mongolia was established through elemental analysis, nuclear magnetic resonance spectroscopy (NMR), Fourier transform infrared reflection (FTIR) and X-ray photoelectron spectroscopy (XPS) experiments. The results show that the coal belongs to long-flame coal. Its aromatic hydrocarbon content was 56.14 %, mainly dominated by benzene and naphthalene rings. The oxygen-containing functional groups (OGs) existed mainly in the C<img>O form. The aliphatic carbons were mainly composed of methylene groups. The N and S elements were present as pyrrole nitrogen and thiophene nitrogen, respectively. The molecular formula of the long-flame coal model was C₁₄₅H₈₇O₂₁NS. A microporous network of long-flame coal structures was constructed by molecular simulation. It was found that with the increase of the probe radius, the shape of the inaccessible holes changed to pear-shaped, tongue-shaped, and inverted bottle-shaped with a small mouth and large cavity, and aggregation and connection phenomena appeared between the holes. The appropriate aperture detection range should be determined to be between 0.1 and 0.44 nm. The main distribution regions of LUMO and HOMO orbitals of long-flame coal were determined by quantum chemical calculation. The IGMH (independent gradient model based on Hirshfeld partition) isosurfaces between long-flame coal and water were calculated, and the adsorption regions and interaction types of water on the surface of long-flame coal were clarified. The results provide the basis for enhanced coal wettability and improved dust suppression efficiency.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136772"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747616","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}

{"title":"Emulsion-stabilized silver nanoparticles vs. aqueous solutions: Effects on aggregation, elastic scattering, and nonlinear optical properties","authors":"Shirin Adampour,&nbsp;Mehdi Khazaei Nezhad,&nbsp;Soheil Sharifi","doi":"10.1016/j.colsurfa.2025.136795","DOIUrl":"10.1016/j.colsurfa.2025.136795","url":null,"abstract":"<div><div>Silver nanoparticles are stabilized using the stable emulsion developed by mixing water, n-heptane, AOT surfactant, and Ag nanoparticles, and their nonlinear optical characteristics are studied. The plasmonic and nonlinear optical properties of emulsion-stabilized silver nanoparticles are unique due to their placement inside n-heptane and the accumulation of water nanodroplets around them. The optimal concentration and stability time of silver nanoparticles in the emulsion have been investigated to achieve the highest nonlinear absorption coefficient. By comparing the emulsion and aqueous solutions including NaCl, NaOH, L-alanine, and CTAB, a significant increase in nonlinear optical absorption along with elastic light scattering was observed in the emulsion sample, which is the result of increased aggregation of Ag nanoparticles along with a decrease in the dielectric constant of the medium. As a result, the emulsion has been introduced as a tool for modifying the optical properties of Ag nanoparticles. Nonlinear absorption mechanisms, including processes involving free carriers and reverse saturation absorption, are described. Emulsion-stabilized Ag nanoparticles can be used in photodynamic therapy. Since encapsulation enhances nonlinear optical quantities, it can be used as a solution for an effective strategy for the detection and removal of toxic pollutants such as metal ions.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136795"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747021","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}