Sustainable Materials and Technologies最新文献

{"title":"Fully biobased strong and tough PLLA/PA510 blends: Fining phase morphology and robust interfacial adhesion through interface reaction modulation","authors":"Pengcheng Zhang ,&nbsp;Juanjuan Su,&nbsp;Jian Han","doi":"10.1016/j.susmat.2025.e01548","DOIUrl":"10.1016/j.susmat.2025.e01548","url":null,"abstract":"<div><div>Blend modification of bio-based flexible polymers with Poly (L-lactic acid) (PLLA) is a highly promising approach to improve the inherent brittleness of PLLA, which has, significantly restricted its practical applications. However, the realization of high flexibility while maintaining comparable strength remains a critical challenge due to the paradoxical nature of the polymer. To address this limitation, this study introduces a high-performance bio-based polyamide (PA510) for the first time, in conjunction with an epoxy compatibilizer (ADR), to achieve a balance of strength and toughness through interfacial and microstructure modulation. The theoretical predictions are carried out to guide the processing, and due to the affinity of ADR with PLLA, the migration of ADR and its pre-grafted products to the interface is promoted by premixing ADR with PA510, thus constructing PLLA-g-PA510 branched copolymers at the interface. The joint effect of robust interfacial adhesion and substantially reduced particle size of the dispersed PA510 phase (0.4 μm) enables the (PA510/ADR)/PLLA blends to simultaneously achieve high ductility and strong tensile strength. Its elongation at break is as high as 404.2%, while the tensile strength is comparable to that of pure PLLA at 59.6 MPa.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01548"},"PeriodicalIF":8.6,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685739","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":"Toward a sustainable circular economy of multilayer plastic films: Life cycle and techno-economic assessment with a focus on end-of-life treatment and multiple recovery cycles","authors":"Farshid Nazemi ,&nbsp;Rebecca Hanes ,&nbsp;Rachmat Mulyana ,&nbsp;Jose Castro ,&nbsp;Saikrishna Mukkamala ,&nbsp;Todd Hyche ,&nbsp;Bhavik R. Bakshi","doi":"10.1016/j.susmat.2025.e01526","DOIUrl":"10.1016/j.susmat.2025.e01526","url":null,"abstract":"<div><div>This study presents a life cycle assessment (LCA) and techno-economic analysis (TEA) of end-of-life technologies for treating polyethylene–polyamide barrier film waste, focusing on quality degradation across recovery cycles. Novel treatment methods are experimentally validated, while others are drawn from literature and industry consultations. A displacement approach, assuming no quality loss, is first applied. Results show that solvent-based recycling via the solvent-targeted recovery and precipitation (STRAP) process outperforms alternatives across environmental indicators, reducing global warming potential (GWP) by 40% compared to landfilling. Incineration performs worst in most categories, particularly eutrophication (80% higher than landfilling), due to nitrogen emissions. Experimentally validated downcycling (pelletizing) proves more economically viable. The assumption of infinite recoverability is overly optimistic. To address this, we propose a mathematical framework accounting for a finite number of recovery cycles. This refined model shows reduced GWP and cost savings for solvent recovery, making its benefits less pronounced than initially estimated. Sensitivity and uncertainty analyses reveal strong dependence on recovered material quality and solvent recovery efficiency, underscoring the need for optimized process design. Finally, hotspot analysis identifies greenhouse gas emissions from the polyamide supply chain as the dominant GWP contributor. The results underscore potential trade-offs across pathways and show that solvent-based recovery’s sustainability depends heavily on process conditions.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01526"},"PeriodicalIF":8.6,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672263","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":"Boosting sustainable hydrogen production via water splitting and urea oxidation using spinel hollow-sphere nano catalysts","authors":"Hsin-Yu Lin ,&nbsp;Dhanapal Vasu ,&nbsp;Chun-Han Tsang ,&nbsp;Cheng-Shan Hsu ,&nbsp;Gopi Prashanth ,&nbsp;Te-Wei Chiu ,&nbsp;Naratip Vittayakorn","doi":"10.1016/j.susmat.2025.e01544","DOIUrl":"10.1016/j.susmat.2025.e01544","url":null,"abstract":"<div><div>In this study, spinel MgCo₂O₄ materials were synthesized using three different techniques: freeze-drying, solid-state, and hydrothermal methods, to evaluate their structural, morphological, and electrocatalytic properties. Comprehensive characterization techniques including XRD, Raman spectroscopy, FT-IR, FESEM, HRTEM, and XPS confirmed the successful formation of phase-pure MgCo₂O₄ with varied morphologies. Among the synthesized materials, the freeze-dried sample exhibited a well-defined hollow-sphere structure, providing abundant electroactive sites and superior electron/mass transport pathways. This morphology contributed to outstanding electrocatalytic performance. For the oxygen evolution reaction (OER), the hollow-sphere MgCo₂O₄ catalyst demonstrated a low overpotential of 430 mV at 10 mA cm⁻² and a Tafel slope of 190 mV dec⁻¹. In addition, the same catalyst exhibited excellent activity for the urea oxidation reaction (UOR), with a Tafel slope of 95 mV dec⁻¹ and enhanced current density under alkaline conditions. The superior UOR activity, enabled by the lower oxidation potential of urea (∼0.37 V vs. RHE), also highlights its potential for energy-efficient hydrogen production and wastewater treatment. This work establishes a scalable and cost-effective strategy to synthesize high-performance MgCo₂O₄ hollow-sphere electrocatalysts, paving the way for their application in sustainable energy and environmental technologies.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01544"},"PeriodicalIF":9.2,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721477","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":"Stabilized, highly light-blocking microcomposite coating based on size-controlled polystyrene microspheres for paper surface engineering","authors":"Hao Jiang ,&nbsp;Bin Wang ,&nbsp;Hongxia Ma ,&nbsp;Jinpeng Li ,&nbsp;Daxian Cao ,&nbsp;Jun Xu ,&nbsp;Jinsong Zeng ,&nbsp;Wenhua Gao ,&nbsp;Kefu Chen","doi":"10.1016/j.susmat.2025.e01547","DOIUrl":"10.1016/j.susmat.2025.e01547","url":null,"abstract":"<div><div>Environmentally friendly waterborne coatings have attracted significant interest in the paper industry. However, the poor compatibility of masking materials with coating matrices often compromises film formation, adhesion, and stability, thus driving the need for high-performance alternatives. To tackle this challenge, monodisperse polystyrene microspheres (∼1.35 μm) with exceptional light-blocking properties were successfully synthesized through a simple yet optimized dispersion polymerization approach. These microspheres were subsequently incorporated into styrene-acrylic latex (SAL) to develop a microcomposite coating system. The resulting microcomposite coating showed a significant reduction in UV–vis transmittance, decreasing it to below 25 %. This represented a 70.16 % (±2.02 %) reduction in maximum transmittance compared to the pristine SAL coating. Furthermore, the microcomposite coating demonstrated superior environmental durability under various conditions, including aqueous, ethanol, saline, acidic, alkaline, UV light and cyclic mechanical stress conditions. When applied to paper substrates, the microcomposite coating significantly enhanced both optical and mechanical properties, outperforming conventional masking materials. In addition, the coated paper was fully biodegradable under natural conditions within 30 days. Notably, the residues from the polymerization process exhibited exceptional reusability, consistent with the principles of the circular economy. This study presents a green synthesis approach for high-performance waterborne coatings, combining exceptional light-blocking efficiency with robust stability, with potential applications in papermaking, construction, and automotive industries.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01547"},"PeriodicalIF":8.6,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685855","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":"Bio-compatible hydroxyapatite Nanoplatform wrapped covalent organic framework (COF) as sustainable stimuli-responsive nano-hybrid for multi-purpose nanocomposite coating","authors":"Mohammad Ramezanzadeh ,&nbsp;Milad Motamedi ,&nbsp;Seyyed Arash Haddadi ,&nbsp;Abbas Ghanbari ,&nbsp;Tizazu H. Mekonnen ,&nbsp;Bahram Ramezanzadeh","doi":"10.1016/j.susmat.2025.e01546","DOIUrl":"10.1016/j.susmat.2025.e01546","url":null,"abstract":"<div><div>A sustainable stimuli-responsive two-dimensional bio-compatible calcium phosphate based hydroxyapatite (2D-HA) nanoplatforms wrapped by green inhibitors (tannic acid and praseodymium) doped three dimensional covalent organic frameworks (PrTA-COF@HA) was designed for fabricating a multi-purpose epoxy (EP) nanocoating with unique anti-corrosion properties, active self-healing, high thermal durability and mechanical strength, and outstanding weathering resistance. Analytical techniques, including Fourier transform infrared spectroscopy (FT-IR), Raman, low-angle X-ray diffraction (XRD), Brunauer-Emmett-Teller analyses (BET), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron (HR-TEM) were used to investigate the PrTA-COF@HA nanoplatform, and the obtained results revealed new properties of this nano-reservoir. The protective performance of the PrTA-COF@HA reinforced epoxy coating (EP/PrTA-COF@HA) was evaluated through some techniques including electrochemical impedance spectroscopy (EIS), accelerated salt spray test (A-SST), pull-off adhesion strength, cathodic disbondement (CD) test, tensile, dynamic mechanical thermal analysis (DMTA), and weathering resistance (QUV-A) tests. The intact EP/PrTA-COF@HA priming nanocoat showed excellent physical shielding against the brackish water (3.5 wt% of NaCl) with log |Z|_10mHz = 10.30 after saline exposure for about 135 days. Furthermore, appreciable active self-healing property with an efficiency of about 41.25 % was observed for the defective EP/PrTA-COF@HA priming nanocoat after 8 h of immersion in the brackish water. The pull-off test revealed about 3.14 and 1.77 % loss of adhesion for the EP/PrTA-COF@HA priming nanocoat after 14 days of A-SST and 125 h of QUV-A exposure, respectively. The set of presented results and other extraordinary properties presented in the manuscript make this priming coat a prime choice for industrial applications in brackish marine environments.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01546"},"PeriodicalIF":8.6,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685854","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":"3D printing of bio-based photocurable slurries prepared with waste-derived glass","authors":"Matilde Porcarello,&nbsp;Marco Sangermano,&nbsp;Milena Salvo,&nbsp;Federico Smeacetto,&nbsp;Simone Anelli","doi":"10.1016/j.susmat.2025.e01549","DOIUrl":"10.1016/j.susmat.2025.e01549","url":null,"abstract":"<div><div>This study investigates waste-derived glass materials in 3D printing slurries through vat polymerization technologies, utilizing biobased photocurable formulations derived from acrylate epoxidized soybean oil (AESO). Waste materials, including mineral wool and glass from municipal waste incinerator bottom ash vitrification, were milled, sieved, and characterized to ensure a particle size distribution under 50 μm. Thermal analyses were conducted to understand the glass-based materials' thermal behavior and the polymeric formulation's decomposition, allowing for the optimization of thermal treatment parameters. These powders were mixed with AESO formulations to create photocurable slurries containing up to 60 wt% ceramic loadings. Rheological and photo-rheological tests demonstrated satisfactory flowability (0.2–10 Pa·s) and high photo reactivity for 3D printing. Subsequently, thermal treatments at 950 °C were applied to consolidate the printed objects, removing the resin component and forming glass-ceramic structures. The results highlight the significant potential of this method for producing porous glass-ceramic materials, offering promising opportunities for sustainable material reuse and advanced manufacturing processes.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01549"},"PeriodicalIF":8.6,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694656","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":"Agricultural silica-reinforced rigid polyurethane foam for high-performance and sustainable insulation materials","authors":"Nadiatus Silmi ,&nbsp;Putry Arby Dalimunthe ,&nbsp;I. Putu Mahendra ,&nbsp;Swasmi Purwajanti ,&nbsp;Purwoko ,&nbsp;Roni Permana Saputra ,&nbsp;Veinardi Suendo ,&nbsp;Hidayat ,&nbsp;Athanasia Amanda Septevani","doi":"10.1016/j.susmat.2025.e01545","DOIUrl":"10.1016/j.susmat.2025.e01545","url":null,"abstract":"<div><div>The demand for sustainable materials in building construction is rising due to the increasing global energy consumption and the need for energy-efficient buildings. Rigid polyurethane foam (RPUF) is widely used as an insulating material, but its thermal performance can be further enhanced through sustainable modifications. This study explores the incorporation of silica nanofillers extracted from agricultural waste as a strategy to improve the thermal insulation and mechanical properties of RPUF. Silica was extracted from rice husk, bamboo leaf, and corn cob. Silica derived from rice husk was further incorporated into RPUF formulations as the most promising reinforcing silica source. The thermal conductivity test revealed that RPUF containing 0.25 wt% silica (FSR_0.25) exhibited the lowest thermal conductivity (0.023 W/m⋅K), representing a 9.45 % improvement over neat RPUF (FSR₀) attributed to the nucleation effect of silica incorporation. Mechanical testing showed that the reinforcement of silica also increased the compressive strength of FSR_0.25, achieving 0.26 MPa in both parallel and perpendicular directions relative to the foam rise. Scanning electron microscopy and thermogravimetric analysis further confirmed the enhanced thermal performance of FSR_0.25. These findings demonstrate that reinforcing RPUF with silica, specifically from rice husk, optimally enhances both its thermal insulation and mechanical properties, offering a sustainable approach while addressing energy efficiency and environmental concerns.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01545"},"PeriodicalIF":8.6,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703931","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":"Preliminary assessment of alkali-resistant flax based meshes for reinforcing cementitious composites","authors":"Jaka Gašper Pečnik ,&nbsp;Laetitia Marrot ,&nbsp;Marica Mikuljan ,&nbsp;Tania Langella ,&nbsp;Matthew Schwarzkopf","doi":"10.1016/j.susmat.2025.e01541","DOIUrl":"10.1016/j.susmat.2025.e01541","url":null,"abstract":"<div><div>The production of textile-reinforced concrete (TRC) requires less materials and energy in comparison with conventional concrete reinforced with steel rebars, which draws some solutions towards the production of net zero concrete that the Cement and Concrete Industry sector should reach by 2050. To go one step further, this study investigates the development of flax based meshes as basic components for a reinforcement grid in cementitious materials. Flax strands and hybrid strands (combination of flax strands and glass or basalt rovings) were impregnated with an epoxy resin to form meshes. The physical and mechanical properties of the flax based meshes were assessed and the alkaline resistance of these reinforcing materials was evaluated to determine their durability in a cementitious matrix. At isoweight of reinforcement, the flax-based meshes demonstrated the best performance in terms of specific modulus and specific strength compared to the hybrid meshes. The hybrid meshes from the control batch displayed specific properties in the same range, whether they were constituted of AR-glass or basalt. However, the use of alkali-resistant glass rovings strongly mitigated the degradation of the mechanical properties of the hybrids meshes by making them less affected by the alkaline environment, among all the reinforcement meshes. In contrast, hybrid meshes with basalt experienced an extensive reduction in tensile strength and strain after exposure to alkaline environment, due to the corrosion of the basalt fibres. Pull-out tests revealed maximum bond strengths for the flax based meshes embedded in a high-performance concrete matrix.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01541"},"PeriodicalIF":8.6,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685856","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":"Oxygen-deficient VOx integrated cobalt‑nitrogen codoped carbon emerging as a sustainable bifunctional catalyst for efficient zinc–air batteries","authors":"Ritu Rai ,&nbsp;Zubair Ahmed ,&nbsp;Rohit Kumar ,&nbsp;Anna Hnydiuk-Stefan ,&nbsp;Kheira Said ,&nbsp;Jacky Advani ,&nbsp;Dariusz Łukowiec ,&nbsp;Dawid Janas","doi":"10.1016/j.susmat.2025.e01542","DOIUrl":"10.1016/j.susmat.2025.e01542","url":null,"abstract":"<div><div>Improving zinc-air batteries (ZABs) appeals for materials that hasten the two primary electrochemical reactions, especially OER and ORR. There has been significant efforts to construct non-precious metal dual functional catalysts as noble-metal catalyst alternatives. However, for these catalysts, reaching the performance levels required for ZAB commercialisation still remains an elusive goal. In this work, an interconnected oxygen-deficient vanadium oxide (VO_x) in proximity to (Co/Fe)-N-C sites evolving as a sustainable and efficient catalyst for ZABs has been presented. Among the synthesized materials, Co-N-C/VO_x@NC demonstrates superior bifunctional ORR/OER activity at ZAB air-electrode evidenced by its lower voltage gap between ORR and OER compared to Fe-N-C/VO_x@NC. According to theoretical simulations, the spectacular bifunctional performance of Co-N-C/VO_x@NC was attributed to escalated charge-transfer across the active sites and favourable d-band centre alignment which improves the adsorption energy of oxygenated intermediates facilitating the reaction kinetics. Under practical ZABs operating conditions, Co-N-C/VO_x@NC air electrode achieved a peak power density of 155 mW cm⁻², outperforming other catalysts and furthermore yielding a specific capacity of 869.2 mAh g⁻¹, exceeding that of PtRu/C by 1.8 % and Fe-N-C/VO_x@NC by 22.5 % under similar operating conditions. Co-N-C/VO_x@NC batteries performed well after 35 h of uninterrupted operation at 5 mA cm⁻², unlike PtRu/C batteries, which degraded after 600 cycles.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01542"},"PeriodicalIF":8.6,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685963","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":"Unleashing the potential of magnesium nanoparticles: A green synthesis for sustainable sensing solutions","authors":"Doha Abbas ,&nbsp;Aotmane En Naciri ,&nbsp;Montassar Bouzourâa ,&nbsp;Toni Alhaddad ,&nbsp;Ali Kassem ,&nbsp;Alexandre Bouché ,&nbsp;Suzanna Akil","doi":"10.1016/j.susmat.2025.e01538","DOIUrl":"10.1016/j.susmat.2025.e01538","url":null,"abstract":"<div><div>For the first time, we unveil an innovative, one-step approach for synthesizing magnesium nanoparticles (MgNPs), combining efficiency, simplicity, and environmental sustainability. Our method utilizes spin-coating of a magnesium precursor-loaded poly(methyl methacrylate) (PMMA) dispersion onto n-doped silicon substrates. This process induces vapor-driven phase separation, leading to the self-assembly of PMMA into a nanoporous film that encapsulates MgNPs within its nanoholes. Unlike traditional methods that depend on toxic reducing agents or complex synthesis routes, our approach eliminates the need for additional stabilizers, making it a greener and more efficient alternative for nanostructure fabrication. By systematically optimizing precursor concentration and spin-coating speed, we precisely control the size and dispersity of MgNPs, achieving spherical nanoparticles of approximately 50 nm − the smallest size reported to date. Optical characterization using micro-extinction spectroscopy confirms the presence of localized surface plasmon resonance (LSPR) in the Mg/PMMA composite, demonstrating its potential for advanced sensing applications. X-ray photoelectron spectroscopy (XPS) reveals that MgNPs are passivated by a native MgO layer, enhancing stability and minimizing oxidation under ambient conditions. These substrates exhibit outstanding surface-enhanced Raman scattering (SERS) sensitivity, detecting 4,4′-bipyridine (4,4′-BP) at low concentrations. This innovative strategy offers a sustainable path for developing earth abundant plasmonic nanomaterials with tunable optical properties.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01538"},"PeriodicalIF":8.6,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703932","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}