Applied Clay Science最新文献

{"title":"Interfacial interaction of zinc ions functionalized kaolinite for regulating antibacterial performance and cytotoxicity","authors":"Dongyue Wang ,&nbsp;Huaming Yang","doi":"10.1016/j.clay.2024.107516","DOIUrl":"10.1016/j.clay.2024.107516","url":null,"abstract":"<div><p>The increasing prevalence of antimicrobial resistance (AMR), particularly among Gram-negative organisms, has led to a significant challenge in treating infections with antibiotics. Despite the long-term efforts to explore antibacterial agents or drugs, potentiating antibacterial activity while minimizing toxicity to human health remains a significant challenge. In this study, zinc-kaolinite composites were prepared using the calcination method to achieve effective and selective antibacterial activity while maintaining non-toxicity to mammalian cells. The interfacial interactions between kaolinite and zinc ions resulted in the immobilization of the latter by cation-π interaction and polar interactions. This led to a disordered structure and different geometrical configurations at the interface, with the spatial coefficient of the zinc ions changing from 0.64 to 2.08. Furthermore, the interfacial interactions regulate the intrinsic mobility and dissolution rates of zinc ions in solution, resulting in the controlled release of zinc ions. Moreover, a well-oriented structure and steady-flow rheological behaviors enable zinc-kaolinite composites to search for bacteria, thereby achieving selective antibacterial activity. The release behavior of zinc ions at the site of the bacterial surrounding environment significantly reduces toxicity and side effects. The comprehensive investigation of interfacial interaction and antibacterial performance provides new perspectives for the development of metal ion-based antibacterial materials in public health environments.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"259 ","pages":"Article 107516"},"PeriodicalIF":5.3,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From earth material to energy production: Ni-based modified halloysite catalysts for CO2 methanation","authors":"Ayesha A. Alkhoori ,&nbsp;Aasif A. Dabbawala ,&nbsp;Mark A. Baker ,&nbsp;Samuel Mao ,&nbsp;Nikolaos Charisiou ,&nbsp;Steven S. Hinder ,&nbsp;Messaoud Harfouche ,&nbsp;Dalaver H. Anjum ,&nbsp;Maria A. Goula ,&nbsp;Kyriaki Polychronopoulou","doi":"10.1016/j.clay.2024.107514","DOIUrl":"10.1016/j.clay.2024.107514","url":null,"abstract":"<div><p>In present study, halloysite (Hal) clay mineral was modified by promoters, such as ceria, Cu-doped and La-doped ceria. Comprehensive techniques were used to study the microstructure, the surface coordination environment, redox behavior and acid/base properties; the interaction between Ni⁰ nanoparticles and interfacial sites was unveiled. TEM demonstrates that the Hal layer modification promotes high dispersion of Ni⁰ nanoparticles with predominant Ni⁰ (111) facets. Particularly, Hal modification with Ce and La reduces Ni particles size (∼9 nm). XPS reveals the co-presence of Ce^III and Ce^IV species on the surface, which plays a crucial role in facilitating the CO₂ activation. Moreover, XAS studies provide insights into the structural properties and surface interactions at unit cell scale length. Ni/10La10CeHal catalyst exhibits higher oxidation resistance compared to Ni/Hal. In particular, the Ni/10La10CeHal catalyst exhibits the highest CO₂ conversion (X_CO2 = 67%) amongst the studied catalysts, with a Y_CH4 of approximately 61% and a S_CH4 of 91% at 450°C. Whereas the catalyst's Y_CO and S_CO are only ∼6% and ∼9%, respectively, at 450°C compared to both Ni/5Cu15CeHal and Ni/10Cu10CeHal. The Ni/10La10CeHal catalyst showed a steady catalytic performance over 50 h maintaining a X_CO2 of 65% at 450°C, attributed to its extrinsic features.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"259 ","pages":"Article 107514"},"PeriodicalIF":5.3,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S016913172400262X/pdfft?md5=8b03982fd6a04761f118d0bcd72fb7e6&pid=1-s2.0-S016913172400262X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141951237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Palygorskite-Mn(II): An efficient and recyclable heterogeneous catalyst for the synthesis of quinolines","authors":"Penghui Zhang ,&nbsp;Shang Wu ,&nbsp;Jiajia Wang ,&nbsp;Jincai Yang ,&nbsp;Ningning Wang ,&nbsp;Fenping Yin ,&nbsp;Xiaoming Xiang ,&nbsp;Quanlu Yang","doi":"10.1016/j.clay.2024.107518","DOIUrl":"10.1016/j.clay.2024.107518","url":null,"abstract":"<div><p>A green and high efficient heterogeneous catalysts, palygorskite supported NNN-pincer manganese complexes, were prepared. The prepared catalyst were characterized by scanning transmission electron microscopy (SEM), Fourier infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and Brunauer-Emmet-Teller (BET). The results showed that the catalyst were successfully prepared and the structure of palygorskite was still retained. The catalyst displayed outstanding activity for the reaction of 2-aminobenzyl alcohol and secondary alcohols without additional additives, and the corresponding quinolines were obtained in good to excellent yields with a wide scope of substrate tolerance. More importantly, the novel and stable catalysts could be recycled five consecutive times with a little decrease of the catalytic activity. It provides a new strategy for the design heterogeneous catalysts based on the natural clay mineral.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"259 ","pages":"Article 107518"},"PeriodicalIF":5.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141951235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Active packaging films based on poly(butylene succinate) films reinforced with alkaline halloysite nanotubes: Production, properties, and fruit packaging applications","authors":"Bedriye Ucpinar Durmaz ,&nbsp;Filiz Ugur Nigiz ,&nbsp;Ayse Aytac","doi":"10.1016/j.clay.2024.107517","DOIUrl":"10.1016/j.clay.2024.107517","url":null,"abstract":"<div><p>Alkaline treated halloysite nanotubes (aHal) were introduced into poly(butylene succinate) (PBS) matrix using melt blending and solvent casting techniques to enhance the functional properties. The films were characterized for morphological, thermal, mechanical, antibacterial, barrier, and ethylene scavenging properties for their fresh food packaging use. The films exhibited ethylene scavenging performance because of the increased lumen diameter of aHal. The highest ethylene scavenging performance was achieved at 5 wt% aHal (5-aHal) loading for both production methods. The amount of ethylene in the gas-tight container decreased by 80% and 75% in the presence of extruded and solvent-cast 5-aHal, respectively. While PBS/aHal films have mechanical properties comparable to other films recommended for food packaging, extruded films were more flexible and durable than solvent-cast films. In addition, extruded films were found to have a higher water vapor barrier. A packaging test has also been carried out on sliced tomatoes and apples stored at room conditions for 7 days. 5-aHal films showed the best performance in extending the fruit's shelf life. Considering all the results, the melt blending films offer superior performance. Bio-based PBS/aHal films have the capability to contribute significantly to the food safety by serving as eco-friendly, active food packaging materials.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"259 ","pages":"Article 107517"},"PeriodicalIF":5.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal activation of kaolinite through potassium acetate intercalation: A structural and reactivity study","authors":"Adrian Alvarez-Coscojuela,&nbsp;Josep Marco-Gibert,&nbsp;Jofre Mañosa,&nbsp;Joan Formosa,&nbsp;Josep Maria Chimenos","doi":"10.1016/j.clay.2024.107515","DOIUrl":"10.1016/j.clay.2024.107515","url":null,"abstract":"<div><p>Calcined clays have emerged as a suitable alternative to partially replace conventional cement due to their high pozzolanic activity. This study explores a novel activation methodology for kaolinite, aiming to obtain metakaolin at lower temperatures than conventional thermal activation. This methodology involves a prior intercalation stage with potassium acetate (KAc) before thermal activation. The effectiveness of KAc intercalation was assessed through X-ray diffraction (XRD), indicating an intercalation ratio of approximately 90%. Several calcined temperatures were tested in accordance with the thermal behaviour analyzed through thermogravimetric analysis (TGA). Once calcined, the intercalated kaolinites exhibited enhanced reactivity compared to conventional calcined clays in the range between 400 °C to 550 °C, as demonstrated by modified Chapelle and Si/Al availability tests. A comprehensive structural characterization was conducted to facilitate a better understanding of the novel KAc-based metakaolin reactivity through various techniques (XRD, ²⁷Al - ¹H MAS NMR, and TGA). This focused on the crystalline changes in the kaolinite structure, the evolution of Al atoms conformation, and the OH behaviour at different thermal activation temperatures. Overall, this study highlights the potential of KAc intercalation as a strategy to obtain higher metakaolin content at lower temperatures than through conventional thermal treatments, offering insights into the development of its potential use as supplementary cementitious materials or alternative cementitious materials precursor.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"259 ","pages":"Article 107515"},"PeriodicalIF":5.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0169131724002631/pdfft?md5=ea5807e35e08eae55de87192cc9e34a9&pid=1-s2.0-S0169131724002631-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cation exchange capacity- An alternative method to investigate the geological barrier for landfills?","authors":"Zora Alice Kumm,&nbsp;Susanne Gier","doi":"10.1016/j.clay.2024.107513","DOIUrl":"10.1016/j.clay.2024.107513","url":null,"abstract":"<div><p>Clays and clay minerals are ideal raw materials for geological barriers and landfill liners because of their low-hydraulic permeabilities, their swelling properties and adsorption capacities. The geological barrier is a supplementary barrier beneath the body of the landfill, intended to protect the environment from uncontrolled leachate from the waste material. An Austrian standard defines the process for site exploration and the required laboratory tests and parameters for the analysis of the geological barrier. The most important laboratory tests besides grain size analysis are the Atterberg limits and the determination of the clay mineralogy using X-ray diffraction. However, the analysis of the cation exchange capacity (CEC) is not included in the list of laboratory tests. CEC is a numerical value that describes the physical properties of clays, such as the diffusion of charged and uncharged molecules and the cation retention. Hence, the objective of this study is to clarify whether the determination of the CEC using the Cu-trien method represents a possible alternative to currently used laboratory tests.</p><p>For this purpose, three samples (loess, sand and clay) from two landfill sites owned and operated by Zöchling GmbH as well as six mixtures of these samples with varying compositions were examined for their mineralogical, chemical and geotechnical properties. The samples consisted of varying amounts of quartz, feldspar, calcite, dolomite and the clay minerals smectite, illite, kaolinite, vermiculite and chlorite. The results showed that the bulk clay mineralogy correlates well with the Atterberg liquid limit (R² = 0.73) and the CEC (R² = 0.88) and furthermore, the results of the two methods – Atterberg liquid limit and CEC- even correlated better (R² = 0.95).</p><p>This demonstrates that the CEC can be an alternative to the Atterberg liquid limit and/or the analysis of the mineralogical composition of the material. Advantages of the CEC are rapidness, its good reproducibility and cost-efficiency of the analyses compared to the other two methods. Based on the results of this study, a partial substitution of the currently used laboratory tests is considered feasible and CEC could at least be used for fast and efficient screening.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"259 ","pages":"Article 107513"},"PeriodicalIF":5.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0169131724002618/pdfft?md5=9de210b81f473fb7e19a3f454e1d4f85&pid=1-s2.0-S0169131724002618-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Porous metakaolin-based geopolymers for adsorption of Contaminants of Emerging Concern from wastewaters","authors":"Serena C. Tarantino ,&nbsp;Roberta Occhipinti ,&nbsp;Federica Maraschi ,&nbsp;Michele Zema ,&nbsp;M. Pia Riccardi ,&nbsp;Antonella Profumo ,&nbsp;Michela Sturini","doi":"10.1016/j.clay.2024.107502","DOIUrl":"10.1016/j.clay.2024.107502","url":null,"abstract":"<div><p>This research investigates the applicability of metakaolin-based geopolymers in the removal of organic contaminants of emerging concern from polluted water by adsorption. Ofloxacin and cortisone were chosen as model molecules, because of their different chemical properties. For each contaminant, adsorption was first tested on powdered materials with different mesoporosity. The removal of the two drugs was eventually evaluated on macroporous geopolymer monoliths, obtained using commercial olive oil and H₂O₂ solution as pore-forming agents to enhance permeability to liquids and thus favor the absorption process. Finally, a novel ceramic composite diaphragm was prepared and tested. Adsorption experiments demonstrated the larger affinity of all substrates for ofloxacin than for cortisone. Different adsorption mechanisms were observed, monolayer for the antibiotic and cooperative for the steroid, with different adsorption capacities, 29(2) mg g⁻¹ and 0.47(2) mg g⁻¹, respectively. The removal efficiencies of the two drugs by the monoliths and by the ceramic composite diaphragm were evaluated and compared. Satisfactory drug recoveries (&gt;99%) were also obtained under realistic conditions, i.e., freshwater, micrograms per liter drug concentration.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"259 ","pages":"Article 107502"},"PeriodicalIF":5.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0169131724002503/pdfft?md5=9ed5af3584482baa0d1a9b0ebdca946a&pid=1-s2.0-S0169131724002503-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141961409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NiO/vermiculite composites prepared for photocatalytic degradation of methanol-water solution and hydrogen generation","authors":"Marta Valášková ,&nbsp;Pavel Leštinský ,&nbsp;Miroslava Filip Edelmannová ,&nbsp;Jana Madejová ,&nbsp;Kamila Kočí","doi":"10.1016/j.clay.2024.107509","DOIUrl":"10.1016/j.clay.2024.107509","url":null,"abstract":"<div><p>A novel eco-friendly NiO/Vm clay based photocatalysts were synthesized from two vermiculites (Vm1 and Vm2) and nickel(II) nitrate hexahydrate (Ni(NO₃)₂·6H₂O salt precursor by the chemical precipitation without and with the sodium hydroxide (NaOH) or ammonium hydroxide (NH₄OH, 28% NH₃ in H₂O) as precipitation agents (<em>Synthesis A</em>) in comparison with the solid-state thermal decomposition (<em>Synthesis B</em>) at 600 °C. Structural properties of all specimens were characterized by X-ray fluorescence, scanning electron microscopy, X-ray diffraction, infrared (IR) and Raman spectroscopy. The photocatalytic performance of NiO/Vm composites was evaluated under UV radiation (λ = 254 nm) for decomposition of methanol-water to hydrogen over 4-h and the stable yield of hydrogen over the 24-h periods. The NaOH and NH₄OH affected the NiO crystallite size and therefore the photocatalytic activity during 4 h. Different 2:1 layer charge of Vm1 (0.82 e⁻) and Vm2 (0.40 e⁻) and the specific surface area of Vm1 (about 43 m²/g) and Vm2 (about 34 m²/g) supported H₂ yield of 628.2 μmol/g_cat. and 596.8 μmol/g_cat., close to 657.0 μmol/g_cat. produced in the presence of commercial photocatalyst TiO₂ Evonik P25. Crystalline NiO precipitated and anchored in NiO/Vm composites contained smaller crystallites than those in free NiO. Vermiculite silica surface supports coverage of NiO by hydrogen bonding to Si-OH groups influencing the geometry of the NiO crystal structure (disorder NiO(X)). The heterojunction with Si-O-Ni bonding, at which electrons transfer from Vm to NiO cause enriching electron density in NiO and favoring its photocatalytic activity. Photocatalytic hydrogen generation from methanol–water mixture at the presence of all specimens indicated the main product H₂ and minimum by-products CH₄ and CO. The stable hydrogen production for 24 h was confirmed only in the presence NiO/Vm1–24 while maintaining the NiO(X) in small crystallites. The thermal solid-state procedure provided the gradual dehydration of vermiculites and Ni(NO₃)₂·6H₂O to the same amount and crystallinity of NiO in NiO/Vm1 and NiO/Vm2 composites. The results of this work confirm that vermiculites mixed layer structures with different negative layer charge play a dominant role as semiconductors for anchored NiO. The photocatalytic activity of NiO/vermiculite composites can be harnessed to treat wastewater containing organic contaminants.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"259 ","pages":"Article 107509"},"PeriodicalIF":5.3,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of the firing atmosphere onto the thermal transformation of iron-enriched kaolin","authors":"Fleur Guillemin,&nbsp;Gisèle Lecomte-Nana,&nbsp;Youssef El Hafiane,&nbsp;Claire Peyratout,&nbsp;Agnès Smith","doi":"10.1016/j.clay.2024.107512","DOIUrl":"10.1016/j.clay.2024.107512","url":null,"abstract":"<div><p>Understanding the transformations and interactions of kaolinite with secondary phases is a key point to control the physical and chemical properties of resulting materials. The production of ceramics involves multiple steps, among which, sintering is a critical step regarding the achievement of the target properties of use.</p><p>The sintering environment and the surrounding atmosphere can significantly affect the transformation kinetics by changing heat transfer patterns and phase stability. Therefore, the challenge of the present study was to understand the effects of such modifications, especially on the physical and chemical transformations of kaolin-based ceramics regarding the presence of iron-enriched compounds.</p><p>One typical kaolin was chosen as new material for this study: a kaolin denoted “CR” that was provided by Imerys company. The influence of chemically added iron oxide was studied according with reference to the Ellingham diagram. To this end, controlled additions of 5 and 10 wt% of added iron oxide were performed. The thermal behaviour of these samples was investigated from room temperature to 1400 °C under controlled atmosphere using air, argon, or nitrogen. DTA/TG, XRD and SEM analyses were performed to enhance the understanding of the phase transformations and interactions of kaolinite with iron oxide. The presence of iron in kaolin promoted the formation of secondary mullite at lower temperatures, followed by cristobalite formation under air. When the atmosphere was modified using argon or nitrogen (lower partial pressure of dioxygen) these effects were even more pronounced. In addition to decreasing the onset temperature of secondary mullite and cristobalite crystallisation, the reaction paths were modified.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"258 ","pages":"Article 107512"},"PeriodicalIF":5.3,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0169131724002606/pdfft?md5=25d7a1ec8fbfad2526363fe9e643a792&pid=1-s2.0-S0169131724002606-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epoxy resin coatings doped with layered double hydroxide for enhanced anti-permeation performance","authors":"Hanhai Dong ,&nbsp;Yixuan Qiao ,&nbsp;Kaiqi Yang ,&nbsp;Yongqian Zhen ,&nbsp;Wei Tan ,&nbsp;Qingli Cheng ,&nbsp;Yang Wang","doi":"10.1016/j.clay.2024.107505","DOIUrl":"10.1016/j.clay.2024.107505","url":null,"abstract":"<div><p>Excessive permeation from in-service fuel storage tanks at gas stations can lead to serious damage to the environment. Epoxy resin (EP), as a common impermeable coating, its performance may gradually fail due to corrosion and other problems. Layered double hydroxide (LDH), serving as a lamellar inorganic nanofiller, can be incorporated into epoxy resin to improve the anti-permeation properties, while easy agglomeration and poor compatibility of LDH in epoxy resin make the composites difficult to achieve the desired performance. In this work, sodium dodecyl sulphate (SDS) was adopted to connect LDH and epoxy resin from the interfacial enhancement and interlayer regulation points of view. A series of advanced characterizations were applied to analyze the chemical state and morphology of LDH-SDS/EP composite castings. When doped with 3 wt% LDH-SDS, its mass change rate after 28 days of immersion in No.0 diesel fuel was 0.093%, and the flexural strength reached 95.56 MPa, which indicated that the interfacial and interlayer regulation by SDS enhanced anti-permeation performance and effectively alleviated the loss of mechanical properties of the composite coating. Molecular dynamic simulation was further used to reveal the mechanism of enhanced anti-permeation performance by SDS regulation. The results showed that the enhanced anti-permeation performance by SDS regulation could be attributed to the regulated nanofillers of stronger molecular binding with EP matrix and reduced nanofiller/polymer interface. The regulation of LDH can be widely employed to enhance the performance of epoxy resin in extensive applications.</p></div>","PeriodicalId":245,"journal":{"name":"Applied Clay Science","volume":"258 ","pages":"Article 107505"},"PeriodicalIF":5.3,"publicationDate":"2024-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141947368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}