Sustainable Materials and Technologies最新文献

{"title":"The role of high recycled content and heat treatments on microstructure, mechanical properties, and sustainability for an AlSi10MnMg structural automotive component","authors":"Riccardo Arcaleni ,&nbsp;Luca Girelli ,&nbsp;Lavinia Tonelli ,&nbsp;Lucia Lattanzi ,&nbsp;Marialaura Tocci ,&nbsp;Alessandro Morri ,&nbsp;Annalisa Pola ,&nbsp;Lorella Ceschini","doi":"10.1016/j.susmat.2025.e01491","DOIUrl":"10.1016/j.susmat.2025.e01491","url":null,"abstract":"<div><div>Secondary aluminum alloys are produced with end-of-life scraps and are gaining importance for environmental sustainability, thanks to their low intrinsic carbon footprint and energy saving compared to the primary ones. They are increasingly used in the automotive sector for large and complex cast components. However, recycled alloys contaminants like Fe promote the formation of brittle intermetallic compounds, which negatively affect tensile strength and ductility. This study compares the mechanical performance and environmental impact of primary and recycled high pressure die casting AlSi10MnMg (EN AB 43500) alloy under as-produced and heat-treated conditions. Samples were extracted from a die-cast automotive component and subjected to annealing and an optimized T6 heat treatment to balance strength and ductility. Microstructural analysis using field emission scanning electron microscopy revealed a similar pores area fraction, as well as shape, size, and distribution of brittle acicular β-Al₅FeSi and polygonal α-Al₁₅(Fe,Mn)₃Si₂ Fe-rich phases in the primary and recycled alloys under different heat treatment conditions. This similarity justifies the comparable mechanical behavior of the primary and recycled alloy, characterized by limited ductility in the as-produced condition, often insufficient for safety-critical structural components. Heat treatments significantly improved ductility, increasing it by 40–50 % after annealing and nearly doubling it after T6 due to the fragmentation, spheroidization, and coarsening of the eutectic Si. However, the microstructure change reduces strength by a third after annealing and by 20 % after T6, ultimately influencing the final fracture mechanisms. Moreover, heat treatments increase energy consumption, with annealing and T6 leading to about 25 % and 30 % rises, respectively, making them justified only for elongation enhancement.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01491"},"PeriodicalIF":8.6,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"One-step solvothermal in situ loading of TiO2 nanoparticles for the preparation of sustainable high photocatalytic performance PCN-224(Zr)@TiO2 composites","authors":"Haixin Li ,&nbsp;Zimeng Wang ,&nbsp;Jingchun Ou ,&nbsp;Haizhong Lin ,&nbsp;Yaxuan Guan ,&nbsp;Jianji Zhong ,&nbsp;Zhong Hu ,&nbsp;Wenhua Gao","doi":"10.1016/j.susmat.2025.e01499","DOIUrl":"10.1016/j.susmat.2025.e01499","url":null,"abstract":"<div><div>Due to the misuse of antibiotics and the multiplication of various types of bacteria, serious organic and microbial pollution has been caused to the water environment, which not only destroys the ecological environment, but also poses a serious threat to people's lives and health. In this study, PCN-224@TiO₂ photocatalysts with high performance were solvothermally synthesized in one step. The one-step solvothermal method allowed TiO₂ nanoparticles to be uniformly and efficiently loaded on the surface of PCN-224, which greatly increased the active sites of the composite photocatalyst, facilitating the rapid charge separation and transfer. In addition, the direct <em>Z</em>-scheme heterojunction of PCN-224@TiO₂ effectively suppressed the rapid complexation of photogenerated electrons and holes, further enhancing the photocatalytic performance. Photodegradation experiments indicated that PCN-224@TiO₂ (PTO-20 %) had the highest degradation efficiency against oxytetracycline hydrochloride (OTCH), which was able to degrade 93.50 % of OTCH in 90 min, with a degradation rate 4.1 and 3.9 times higher than that of TiO₂ and PCN-224, respectively. Additionally, PTO-20 % was able to completely inactivate <em>S. aureus</em> and <em>E. coli</em> in 15 min under light, providing excellent photocatalytic antimicrobial effects. Subsequently, the photocatalytic performance of PTO-20 % was explored in real water environments, finding that the degradation rate of OTCH by PTO-20 % reached 85.17 % even in the sea water with more complicated water quality. The construction of PCN-224@TiO₂ heterojunction fully combines the advantages of PCN-224 and TiO₂, which provides a new idea to solve the organic and microbial pollution in the water environment.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01499"},"PeriodicalIF":8.6,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Beyond conventional approaches: Sustainable valorization of sewage sludge - challenges and opportunities","authors":"Sadia Basri ,&nbsp;Raj Kumar Oruganti ,&nbsp;Tarun K. Panda ,&nbsp;Debraj Bhattacharyya","doi":"10.1016/j.susmat.2025.e01496","DOIUrl":"10.1016/j.susmat.2025.e01496","url":null,"abstract":"<div><div>Sewage sludge (SS), an unavoidable byproduct in the form of residual liquid or semi-solid generated from a sewage treatment plant, is the core issue due to its huge amount and the environmental impacts associated with its disposal. There are several conventional methods, such as anaerobic digestion, land application, landfilling, and incineration, practiced for decades for sludge volume reduction and its management. Handling and disposing of this enormous amount of SS via conventional methods has become challenging due to the presence of organic contaminants, pathogens, and heavy metals, lack of societal acceptance, stringent legislation, the release of toxic gases such as dioxins and furans, partial recovery of energy, etc. Hence, non-conventional alternative approaches pioneer a new strategy for sustainably managing the huge amount of SS, considering the environmental, societal, and economic aspects. These approaches offer a holistic solution for SS management, not only by reducing the sludge volume but also by facilitating the recovery of all possible value-added products from SS. Due to its complicated composition, SS differs from other biomasses like lignocellulosic biomass, making its valorization a bit challenging. This article comprehensively reviews all the possible options for valorizing the SS, following the thermo-chemical conversion approaches (including pyrolysis, gasification, hydrothermal liquefaction, and hydrothermal carbonization) and biochemical approaches. Various challenges and opportunities related to the alternative approach have been discussed in this article. Life cycle and techno-economic assessment studies are needed to evaluate the suitability of these approaches for their commercial viability.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01496"},"PeriodicalIF":8.6,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shorter process washing-free cleaner dyeing technology of polyester/polyamide blended superfine fabrics with liquid disperse dyes","authors":"Wei Lu ,&nbsp;Xianzhou Qiu ,&nbsp;Yu Shao ,&nbsp;Longfei Wang ,&nbsp;Zhijie Chen ,&nbsp;Dongming Qi ,&nbsp;Jiawei Li","doi":"10.1016/j.susmat.2025.e01489","DOIUrl":"10.1016/j.susmat.2025.e01489","url":null,"abstract":"<div><div>Polyester/polyamide (PET/PA) blended superfine fabrics are usually dyed by the traditional high-temperature-pressure dip dyeing, which tremendously burdens the environment due to the large amounts of time, water, and energy consumption. In this research, shorter process washing-free cleaner dyeing technology for PET/PA fabrics was developed with liquid dispersed dyes (LDDs). The dyeing property of LDDs was improved by the control cross-linking degree of the fluorosilicate-modified polyacrylate (FSP) binder agent. The developed shorter process washing-free cleaner dyeing technology for PET/PA fabrics ensured color depth, colorfastness, dyeing uniformity, color regulation and matching. More importantly, our results showed that the cross-linking structure of FSP latex films prevented the migrated dye molecules towards the air-film interface, towards the fiber interface, as a result of the improvement of dye performance, colorfastness, and hand feeling of the cleaner pad dyed fabrics. Economic and environmental analysis results indicated this process shortened the dyeing time by 83.6 % compared with traditional dyeing and reduced the water, energy consumption, carbon dioxide (CO₂) emissions, and total economy by 66.6 %, 84.9 %, 85.0 %, and 64.7 %, respectively. These insights allow for the effective development of shorter process washing-free cleaner dyeing technology to establish a sustainable and circular economy.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01489"},"PeriodicalIF":8.6,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards sustainable construction: RCA under different crushing techniques to determine the utilisation potential index for concrete production","authors":"Václav Venkrbec ,&nbsp;Niels Haond ,&nbsp;Veerle Boel ,&nbsp;Iveta Nováková","doi":"10.1016/j.susmat.2025.e01493","DOIUrl":"10.1016/j.susmat.2025.e01493","url":null,"abstract":"<div><div>The construction industry is associated with the largest contribution to global greenhouse gas emissions so as the largest consumption of natural resources and production of waste. Concrete consists of 70 % to 80 % of aggregates and that makes it also easily recyclable into reusable granular material, so-called recycled concrete aggregates (RCA), for multiple reuse purposes. RCA can be of various qualities depending on aspects like the quality of the parent concrete (PC), the ambient exposure during its service life and the crushing technology used for its production. This paper presents large-scale study focused on determining the effects of three different crushing technologies, namely jaw crusher, impact crusher and cone crusher, and their influence on the properties of produced RCA conducted with one type of PC. The investigated properties according to EU standards were particle size distribution, fines content, flakiness index, saturated and surface-dried particle density, and water absorption. Experimental tests were used to quantify the residual mortar content and the amount of unfractured NA from the PC. Moreover, properties of the PC, such as compressive strength, density, and maximum particle size of NA, were determined. In this study, multi-criteria decision analysis (MCDA) is used to establish a new index, the utilisation potential index (UPI), to assess the applicability of crushed RCA. Results showed that the cone crusher produces 26.3 % and 21.4 % more fraction 8–22.4 mm than the impact, respectively, jaw crusher but with a slightly lower UPI, which makes those RCA more suitable for conventional concrete rather than high-strength concrete. Conversely, the RCA fraction 0–4 mm produced by a cone crusher has a significantly better UPI than the same fraction produced by the other tested crushers. At the end of the paper, conclusions based on both the relationship between RCA properties and crusher type as well as the relation of RCA to PC properties are presented, evaluated, and discussed. The case study is aligned with an experimental framework which is beneficial in the decision-making process to determine the most suitable crusher type for the desired RCA application. The paper contributes to a greater focus on the method of concrete production and may be considered valuable by other researchers, as well as by producers of recycled aggregates and concrete producers in the near future.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01493"},"PeriodicalIF":8.6,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144313898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polyethyleneimine functionalized waste tissue paper@waste PET composite for the effective adsorption and filtration of organic dyes from wastewater","authors":"Sabarish Radoor ,&nbsp;Jasila Karayil ,&nbsp;Yılser Devrim ,&nbsp;Hern Kim","doi":"10.1016/j.susmat.2025.e01494","DOIUrl":"10.1016/j.susmat.2025.e01494","url":null,"abstract":"<div><div>This study explores the potential of repurposing discarded plastic bottles and cellulosic paper waste to develop cost-effective and high-performance composites for dye removal applications. A novel composite, polyethyleneimine (PEI)-functionalized waste tissue integrated into waste polyethylene terephthalate (wPET) (PEIWT/wPET), was designed as an environmentally friendly adsorbent for wastewater treatment. Successful surface functionalization with PEI was confirmed through FTIR, EDX, and XPS analyses. The PEI-modified composite exhibited enhanced mechanical and thermal stability while demonstrating significantly improved dye adsorption/filtration performance. The composite was evaluated for the removal of both cationic (crystal violet, CV) and anionic (orange II, O II) dyes under optimized conditions; (10,000 mg/L and 1666 mg/L) adsorbent dosage, (11 and 1) pH, 10 mg/L initial dye concentration, and (180 min and 120 min) contact time for CV and O II respectively. Experimental results showed that PEIWT/wPET achieved maximum adsorption capacities of 3.94 mg/g for CV and 11.73 mg/g for O II, approximately five times higher than the unmodified composite (0.74 and 2.4 mg/g). Adsorption isotherm and kinetic studies indicated that the data aligned well with the Langmuir as well as Freundlich and pseudo-second order models. The membrane also exhibited filtration capability for both dyes, achieving a filtration efficiency of 78.69 % for anionic and 41.31 % for cationic dye separation. Overall, the PEIWT/wPET composite offers a promising, sustainable, and energy-efficient solution for the removal of organic pollutants.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01494"},"PeriodicalIF":8.6,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetoactive and electroactive biobased and biopolymer composites","authors":"Ander Garcia ,&nbsp;Carmen R. Tubio ,&nbsp;Ruben Seoane-Rivero ,&nbsp;Luis Rubio-Peña ,&nbsp;Senentxu Lanceros-Mendez","doi":"10.1016/j.susmat.2025.e01485","DOIUrl":"10.1016/j.susmat.2025.e01485","url":null,"abstract":"<div><div>In the scope of a more sustainable economy, composite materials based on non-renewable fossil fuel resources must undergo a rapid reduction and being gradually replaced by more sustainable composites, including biobased ones, aiming to improved environmental friendliness and biodegradability. This review highlights the application of biobased polymer composites in the field of magnetoactive and electroactive smart materials, which are some of the most useful and extended composite materials currently used in sensor, actuator and related applications. First, the physical principles of the most common magnetoactive and electroactive responses are presented. The materials used to produce magnetoactive and electroactive composites are discussed in the following sections, with particular emphasis on the active filler materials, the matrices, and to representative applications that have been developed. Finally, as an essential consideration in this field, the environmental impact of the life cycle of the materials has been discussed. This work should serve as a basis for researchers who are working in the field of magnetoactive and electroactive composites, aiming to contribute to the needed sustainability improvement in the field, while maintaining or even improving performance parameters.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01485"},"PeriodicalIF":8.6,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic modification and performance optimization of polylactic acid with functionalized recycled polyolefins","authors":"Lingxiao Yu ,&nbsp;Ying Qiu ,&nbsp;Bing Yang ,&nbsp;Lixin Song ,&nbsp;Jiangting Huang ,&nbsp;Guangxu Gao ,&nbsp;Siying Leng ,&nbsp;Siqi Yao ,&nbsp;Ziyi Zhao ,&nbsp;Leiqi Wang ,&nbsp;Yongchao Li ,&nbsp;Jialu Gao ,&nbsp;Yuanxia Wang ,&nbsp;Na Wang","doi":"10.1016/j.susmat.2025.e01488","DOIUrl":"10.1016/j.susmat.2025.e01488","url":null,"abstract":"<div><div>The use of recycled plastics and biodegradable plastics is essential for addressing plastic pollution and advancing sustainable development. In this study, recycled polyolefins (R-LLDPE/POE) were synergistically employed to enhance the toughness of bio-based, biodegradable polylactic acid (PLA). To improve the interfacial compatibility between PLA and R-LLDPE/POE, glycidyl methacrylate (GMA) was introduced. The goal was to develop a high-performance, cost-effective, and sustainable PLA-based blend material capable of reducing the environmental impact of conventional plastics and their waste. Results indicate that using functionalized R-LLDPE or POE alone as a modifier does not yield optimal toughening effects. Significant toughness improvement with a favorable stiffness balance is only achieved when both modifiers are incorporated simultaneously, thereby exhibiting a pronounced synergistic toughening effect. As the POE content in the graft copolymer RPGS ((R-LLDPE/POE)-g-(GMA-co-St)) increases, the viscosity, light transmittance, and thermal resistance of the PLA/RPGS blends gradually improve, while the mechanical properties follow a trend of initially increasing and then decreasing. When the R-LLDPE/POE ratio in RPGS is 40/60 (wt/wt), the blend exhibits an optimal balance of properties, with T₉_5%, light transmittance, notched impact strength, and elongation at break reaching 339.97 °C, 92.20 %, 10.18 kJ/m², and 231.75 %, respectively. At this composition, the matrix exhibits more pronounced shear yielding, and the impact fracture surface becomes significantly rougher, displaying clear features of ductile fracture.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01488"},"PeriodicalIF":8.6,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive life cycle assessment and life cycle cost analysis of fuel production using pyrolysis of polyethylene terephthalate plastic waste","authors":"Sajad Nezamoleslami ,&nbsp;Asadollah Akram ,&nbsp;Mohammad Sharifi ,&nbsp;Ashkan Nabavi-Pelesaraei","doi":"10.1016/j.susmat.2025.e01487","DOIUrl":"10.1016/j.susmat.2025.e01487","url":null,"abstract":"<div><div>This study integrates life cycle assessment (LCA) and life cycle cost (LCC) analysis for fuel production through the pyrolysis of polyethylene terephthalate (PET) waste. This novel approach examines two scenarios: advanced and simple pyrolysis, within a case study framework. The system boundary is delineated from the input of 1 t of PET waste as the functional unit (FU) through to the production of pyrolysis oil, natural gas, and petroleum coke as marginal fuels. The ReCiPe2016 impact assessment method is applied to LCA, while capital expenditures (CAPEX) and operational expenditures (OPEX) are analyzed for LCC. A key innovation of this study is the inclusion of the hidden costs associated with environmental damage disposal in the OPEX analysis. Results indicate that advanced pyrolysis, with a climate change benefit of −202 kg CO₂-eq per FU, performs approximately four times better than simple pyrolysis, which shows a benefit of −47 kg CO₂-eq. In most impact categories, the pyrolysis process itself is the main environmental hotspot, while the produced fuels present the primary environmental benefits. The LCC analysis reveals that the total CAPEX for advanced pyrolysis, at $149 per FU, is 50 % higher than that for the simple scenario, primarily due to the costs of purchasing and installing equipment, especially in establishing image processing steps. In terms of OPEX, the simple scenario shows slight advantages due to the absence of catalyst costs. Ultimately, the total LCC for simple and advanced pyrolysis is estimated at approximately -$643 and -$589 per FU, respectively. It can be concluded that environmentally, advanced pyrolysis is always preferable, while economically, starting with catalysts to enhance pyrolysis, followed by adopting image processing technology for automated feedstock sorting, improving purity, pyrolysis efficiency, and fuel yield, offers a strategic progression.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01487"},"PeriodicalIF":8.6,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and application study of multifunctional UV absorption OA-CDs@SiO2 composite materials in coatings","authors":"Weihao Ye,&nbsp;Xinyu Huang,&nbsp;Yan Zhang,&nbsp;Yingliang Liu","doi":"10.1016/j.susmat.2025.e01486","DOIUrl":"10.1016/j.susmat.2025.e01486","url":null,"abstract":"<div><div>UV absorbers are a class of chemicals used to absorb and block UV (ultraviolet) radiation to protect materials or products from UV damage. There are many types of commonly used UV absorbers, predominantly consisting of organic molecules. However, recent advancements have introduced carbon dots as a novel class of UV absorbers, which exhibit significant potential to supplant traditional organic counterparts. In this study, oleic acid modified carbon dots (OA-CDs) were combined with silica to synthesize a composite material exhibiting multifunctional properties, including broad-spectrum UV absorption, oil solubility, and phosphorescence. Structural characterization revealed that the composite material primarily consists of silica, with OA-CDs embedded within it. Additionally, the surface of the material was structured with oil-soluble long carbon chain ligands, which are encapsulated by a modification layer. The outstanding UV absorption capability of the composite material was utilized as a UV absorber in epoxy resin coatings, demonstrating significant enhancement of static performance. It effectively protected the coating and maintains stability during UV weathering aging tests. Furthermore, in acid-base-salt experiments, the performance was similar to that of commercial UV absorbers, maintaining good stability. Beyond its UV absorption capabilities, this material also exhibited notable phosphorescent properties, presenting a novel multifunctional additive for outdoor signage and guidance coatings.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01486"},"PeriodicalIF":8.6,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144322400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}