Sustainable Materials and Technologies最新文献

{"title":"AI-integrated self-powered active road stud-based energy harvesting for enhanced road safety in low-visibility","authors":"Touqeer Aslam ,&nbsp;Ali Azam ,&nbsp;Shoukat Ali Mugheri ,&nbsp;Ammar Ahmed ,&nbsp;Zutao Zhang ,&nbsp;Mansour Abdelrahman ,&nbsp;Juhuang Song ,&nbsp;Chengliang Fan","doi":"10.1016/j.susmat.2025.e01564","DOIUrl":"10.1016/j.susmat.2025.e01564","url":null,"abstract":"<div><div>This paper presents the experimental design and performance optimization of an AI-enabled Active Road Stud (ARS) system, utilizing a self-powered and self-balanced dual-slider crank mechanism to enhance safety and support smart infrastructure in low-visibility conditions. The proposed ARS harnesses kinetic energy from passing vehicles and converts it into electrical energy, offering a sustainable, off-grid solution for powering road lights, sensors, and traffic management tools. The study evaluates four road stud profiles: flat (S-1), parabolic (S-2), round (S-3), and wedge (S-4) to maximize energy conversion efficiency. Initially, numerical simulations were conducted in MATLAB/Simulink at varying frequencies corresponding to different vehicle speeds. These simulations revealed that the wedge-shaped (S-4) profile achieved the highest simulated performance, with a three-phase RMS power output of 34.71 W. The simulations were then validated through laboratory testing using a Mechanical Testing and Sensing (MTS) setup. Subsequently, real-time field experiments confirmed the practical performance of the S-4 profile, which achieved an RMS power output of 17.4 W and 9.21 V at a vehicle speed of 25 km/h and 3 Ω resistance, with an overall energy conversion efficiency of 66 %. Additionally, the ARS incorporates a deep learning-based condition monitoring system using a Long Short-Term Memory (LSTM) network to classify operational states (slow, fast, and failure) and predict maintenance needs. Real-time field tests also validated the system's reliability under adverse weather conditions such as fog, rain, and snow. The proposed ARS is a cost-effective, scalable solution for self-powered applications in both urban and rural environments.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01564"},"PeriodicalIF":9.2,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750380","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":"Recycling of unsorted post-consumer polyethylene and polyethylene terephthalate via mechanochemical compatibilization for food packaging","authors":"Sangwoon Lee ,&nbsp;Yoonjin Kim ,&nbsp;Sung Woo Hong ,&nbsp;Joona Bang ,&nbsp;Jae Hong Kim ,&nbsp;Jong Hyuk Park","doi":"10.1016/j.susmat.2025.e01562","DOIUrl":"10.1016/j.susmat.2025.e01562","url":null,"abstract":"<div><div>The rising accumulation of plastic waste from packaging materials poses a severe environmental threat, emphasizing the need for advanced recycling technologies to repurpose post-consumer (PC) polymers effectively. Conventional mechanical recycling methods for plastic waste treatment involve sorting, chopping, cleaning, and melt-reprocessing. However, packaging materials often consist of multiple tightly adhered polymer layers that are difficult to separate completely. As a result, incompletely sorted mixtures of PC polymers undergo melt-reprocessing, typically producing recycled products with inferior material properties unsuitable for reuse. To address this limitation, an advanced recycling approach enabling in situ compatibilization of mixed polymers during melt-reprocessing is essential. In this study, we applied mechanochemistry (MC) and plasma-assisted mechanochemistry (PMC) to reprocess unsorted blends of low-density polyethylene (LDPE) and polyethylene terephthalate (PET). By applying high-energy mechanical forces—and plasma gas in the case of PMC—in a dry environment, these mechanochemical treatments generated covalent linkages between LDPE and PET, forming amphiphilic copolymers that acted as compatibilizers. This enhanced interfacial compatibility resulted in improved mechanical, barrier, and optical properties in the melt-reprocessed blend, making it suitable for reuse as food packaging material. By promoting in situ compatibilization through MC and PMC, our study offers a breakthrough in the mechanical recycling of unsorted, multicomponent PC plastic blends, potentially reducing dependence on virgin polymers and mitigating the environmental impact of plastic waste.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01562"},"PeriodicalIF":9.2,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750379","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":"Unravelling the correlation between natural and accelerated carbonation of low-carbon concrete using machine learning","authors":"Afshin Marani ,&nbsp;Daman K. Panesar","doi":"10.1016/j.susmat.2025.e01561","DOIUrl":"10.1016/j.susmat.2025.e01561","url":null,"abstract":"<div><div>Understanding correlation between accelerated and natural carbonation is paramount to accurately predicting concrete's long-term carbonation resistance in real-world conditions. However, this relationship is highly dependent on material properties, mix design, and environmental exposure, making the development of a generalized correlation formula unrealistic and nonviable. To address this complexity, this research proposes a machine learning framework to estimate the correlation index for “low-carbon” concrete specific to mix design and regionally relevant climatic exposures. Two probabilistic deep learning models, achieving testing R² of 0.95 in predicting natural and accelerated carbonation depths, were utilized to perform 768 carbonation simulations. The results demonstrate that the developed models provide a unique capability to link the carbonation rates of mixtures under different accelerated testing conditions (e.g., CO₂ concentrations) to the carbonation rates of the same mixtures under region-specific climatic exposure. This framework offers a practical tool for the rapid evaluation of long-term carbonation in low-carbon concrete.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01561"},"PeriodicalIF":9.2,"publicationDate":"2025-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750382","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":"Green precision manufacturing of ultrathin copper foil leadframes by ultraviolet nanosecond pulsed laser microdrilling","authors":"Yujie Han,&nbsp;Chuyang Zhou,&nbsp;He Li,&nbsp;Junjie Zhang","doi":"10.1016/j.susmat.2025.e01553","DOIUrl":"10.1016/j.susmat.2025.e01553","url":null,"abstract":"<div><div>While copper alloy leadframe is the key part for packaging of integrated circuit, developing its clean and precision fabrication technology over wet etching is important for the advancement of sustainable manufacturing. In this work, we propose a novel method for achieving high precision and clean fabrication of leadframes with micron-scale thickness and feature dimensions on 100 μm thinckness copper alloy foil by using nanosecond pulsed laser microdrilling, without the use of etching fluids. Specifically, the multi-pulse laser ablation mechanism of copper alloy is theoretically analyzed by numerical modeling and simulation, based on which a high precision analytical model of ablated material removal rate is established to predict the dependence of micropattern taper, heat damage zone and processing efficiency on utilized laser power. Subsequently, a generalized laser microdrilling method with varying laser power and design dimension scaling is proposed to control the taper and dimensional accuracy of complex micropatterns. And an optical-mechanical coupling laser microdrilling platform is constructed to synchronously control the laser turning on/off, mechanical axis movement and laser processing parameter. Ultimately, one-piece molding of large scale leadframe array, which is composed of high density of burr-free micropatterns with a small taper of 1.7° and high shape accuracy, is achieved on C194 copper alloy foil with a thickness of 100 μm. The present work provides a feasible green solution for the high precision fabrication of leadframes with micron-scale thickness and feature dimensions.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01553"},"PeriodicalIF":8.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714583","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":"Nanocomposite bio-sponge air-electrode biogenically derived from Plantago ovata for applications in wearable and biodegradable zinc-air batteries","authors":"Gajal Singla ,&nbsp;Vishal Kansay ,&nbsp;Surbhi Sharma ,&nbsp;Shagun Gupta ,&nbsp;Ankur Kaushal ,&nbsp;Pritam Hait ,&nbsp;Soumen Basu ,&nbsp;Chhavi Pahwa ,&nbsp;Isha Lallar ,&nbsp;Arvind Kumar Yogi ,&nbsp;Sasanka Chakrabarti ,&nbsp;M.K. Bera","doi":"10.1016/j.susmat.2025.e01558","DOIUrl":"10.1016/j.susmat.2025.e01558","url":null,"abstract":"<div><div>Flexible zinc-air batteries (ZABs) are emerging as sustainable alternatives for next-generation wearable devices. This study introduces an innovative cost-effective and eco-friendly strategy for fabricating a conductive 3D nanocomposite bio-sponge derived from <em>Plantago ovata</em> (psyllium) husk via biogenic synthesis, bypassing conventional pyrolytic carbonization. The resulting bio-sponge features a mesoporous structure characterized by a type-IV adsorption/desorption isotherm, with an average pore diameter of 19.9 nm, a BET surface area of 48.5 m²·g⁻¹, and a predominantly amorphous framework exhibiting low crystallinity (12.9 %). Structural, compositional, and thermal analyses using XRD, Raman spectroscopy, XPS, and TGA confirmed the incorporation of diverse phytochemicals and functional groups within the matrix, along with notable thermal stability, evidenced by a mass loss of only 7.6 % at 266.1 °C. As a proof-of-concept, flexible primary ZABs were fabricated using green-synthesized MnO₂ nanoparticles as the oxygen reduction reaction (ORR) catalyst, with an optimized catalyst loading of 0.2 mg·cm⁻², and a <em>Plantago ovata</em>-derived alkaline hydrogel serving as the electrolyte. The batteries delivered promising performance, with an open-circuit voltage of ∼1.4 <em>V</em>, a discharge time of ∼8.8 h, a peak power density of 51 mW·cm⁻², and a specific capacity of 737 mAh·g⁻¹. The ZABs maintained robust performance under mechanical deformation, successfully powering LEDs and small electronic gadgets even under bending conditions. Furthermore, biodegradation studies revealed over 95 % decomposition of the spent ZABs within 64 days, demonstrating their environmentally benign end-of-life profile. This innovative approach underscores the potential of biogenic materials for developing sustainable, flexible, and disposable energy solutions for wearable technology.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01558"},"PeriodicalIF":8.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714582","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":"Potential of using residual tuff mud to produce low-carbon cement mortar","authors":"Chenyuan Ji ,&nbsp;Zengfeng Zhao ,&nbsp;Lei Yao ,&nbsp;Can Lin ,&nbsp;Jing Xu ,&nbsp;Jianzhuang Xiao","doi":"10.1016/j.susmat.2025.e01559","DOIUrl":"10.1016/j.susmat.2025.e01559","url":null,"abstract":"<div><div>This study explores the feasibility of producing low-carbon mortar by utilizing residual tuff mud (RM) as an alternative to landfill disposal. The RM was activated through physical grinding and calcination, with grinding times of 15, 20, and 25 min and calcination temperatures of 650, 750, and 850 °C. The optimal treatment method for producing modified residual tuff mud powder (MRMP) was identified as 20 min of grinding and 750 °C calcination, based on unit strength life cycle assessment. This method resulted in a 13.4 % reduction in carbon emissions compared to 100 % OPC based mortar. The MRMP, enriched with amorphous substances, further enhanced mortar strength and resistance to chloride penetration compared with RMP based mortar. Incorporating 20 % MRMP led to a 10 % decrease in compressive strength of mortar but achieved a significant CO₂ emission reduction of 82.9 kg/m³. A 30 % replacement resulted in a CO₂ carbon emission reduction of 88.9 kg/m³ compared with the reference mortar, although it had greater impacts on other environmental categories than the 20 % replacement. Overall, this study demonstrates the capability of utilizing RM to produce low-carbon cement mortar, thereby addressing waste disposal issues while reducing CO₂ emissions.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01559"},"PeriodicalIF":9.2,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750381","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":"Use of waste engine oil residue for sustainability in road construction","authors":"Bhavesh Bhambhani ,&nbsp;Satish Chandra ,&nbsp;Gottumukkala Bharath","doi":"10.1016/j.susmat.2025.e01557","DOIUrl":"10.1016/j.susmat.2025.e01557","url":null,"abstract":"<div><div>There are several waste materials that are abundantly available in all countries, and their disposal is causing harm to the environment. Handling these resources improperly can be hazardous to living beings. In this research, one such resource, waste engine oil residue (WEOR), is considered for the partial replacement of the asphalt binder. WEOR contains a complex mixture of pollutants, including heavy metals, polyaromatic hydrocarbons (PAHs), and other harmful substances, which require careful handling. This study aims to explore environment-friendly utilization of WEOR in the asphalt binders and evaluate its performance after long-term aging. The study is divided into two parts. The first part consists of an environmental check for the utilization of WEOR, and the second part evaluates the performance change of the asphalt binder modified with WEOR. The environmental tests show no significant concentrations of heavy metals and no emission of hydrogen sulfide (H₂S) gas into the atmosphere while blending WEOR with asphalt binder. The X-ray diffraction analysis indicated that the introduction of thermoplastic copolymer (TPC) with the WEOR led to amorphization (enhanced elasticity) and stabilization in the asphalt binder. This phenomenon of amorphization helped the extended binders resist the aging process, as quantified by fluorescence microscopy and Fourier transform infrared spectroscopy, showed a reduction in PP parameter and chemical aging index by up to 53 % and 13 %, respectively. The performance of the extended binders after aging was better than that of conventional asphalt binders, which was observed with the reduction in complex modulus shifting parameter up to 50.6 units in extended binders. Therefore, WEOR, with a small portion of TPC, was found to be a sustainable material to reduce the consumption of asphalt binders in road construction.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01557"},"PeriodicalIF":8.6,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714581","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":"Performance and alkalinity control in geopolymer coral aggregate concrete via experiments and machine learning","authors":"Hongbin Pan ,&nbsp;Bai Zhang ,&nbsp;Jiji Cao ,&nbsp;Zhiyuan Yang ,&nbsp;Jixuan Chen ,&nbsp;Xingkai Zhao ,&nbsp;Hui Peng","doi":"10.1016/j.susmat.2025.e01555","DOIUrl":"10.1016/j.susmat.2025.e01555","url":null,"abstract":"<div><div>In ocean engineering, the combination of coral aggregate concrete (CAC) and fiber-reinforced polymer (FRP) composites offers potential for cost-effective, durable structures. However, the highly alkaline environment of cement-based matrices degrades FRP composites via resin hydrolysis, leading to performance deterioration of FRP-reinforced concrete structures. To address this challenge, fly ash-slag composite geopolymers were utilized to develop low-alkalinity geopolymer coral aggregate concrete (GPCAC). A systematic analysis was conducted to evaluate the effects of alkaline dosage and slag/fly ash ratio on the mechanical properties, microstructures, and pore solution alkalinity of GPCAC. The results revealed that increasing the alkali dosage from 4 % to 10 % enhanced the 28-day compressive strength by 33.64 MPa and splitting tensile strength by 2.72 MPa, whereas raising slag content from 30 % to 70 % boosted these strengths by 11.11 MPa and 0.71 MPa, respectively. At 7 days, GPCAC specimens with 10 % alkaline content exhibited a 0.47-unit higher pH value than the 4 % alkali group, and specimens with 70 % slag achieved a 0.25-unit pH increase over the 30 % slag group. However, these disparities diminished by 28 days. Notably, the pore solution pH of GPCAC measured 0.13–0.48 units lower than cement-based CAC, creating a low-alkalinity environment advantageous for mitigating FRP composite degradation. In addition, GPCAC exhibited a higher gel pore proportion than CAC, and optimizing alkali and slag content further increased gel porosity, yielding a denser matrix. An optimal pore structure was achieved with a 6 % alkali dosage and 50 % slag content, with gel pores accounting for 51.42 %, which was 2.15 times that of cement-based CAC. Ultimately, a snake optimization algorithm-enhanced random forest model accurately predicted GPCAC compressive strength with a prediction error below 5 %.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01555"},"PeriodicalIF":8.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704871","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":"Direct production of TiH2 powder with 0.21 mass%O from TiO2 using magnesiothermic reduction in high hydrogen chemical potential","authors":"Youngju Song ,&nbsp;Sung-Hun Park ,&nbsp;Jungshin Kang","doi":"10.1016/j.susmat.2025.e01540","DOIUrl":"10.1016/j.susmat.2025.e01540","url":null,"abstract":"<div><div>In recent years, reduction followed by deoxidation using magnesium (Mg) in a hydrogen gas (H₂) atmosphere has been suggested as a method to produce titanium (Ti) metal with a low oxygen (O) concentration from titanium dioxide (TiO₂). In this study, a single-step magnesiothermic reduction of TiO₂ in an H₂ mixed gas atmosphere was developed to produce Ti with a low O concentration. In the experiments, the reduction of sintered/unsintered TiO₂ with particle size below 300 μm in molten magnesium chloride (MgCl₂) – potassium chloride (KCl) was conducted at 973 K for 12–48 h in an argon (Ar) – 10 % H₂ gas atmosphere. The influences of microstructure and particle size of TiO₂, the ratio of salt to TiO₂ feed, and reduction time on the O concentration and phases of the obtained residues were investigated. Under certain conditions, TiH₂ powder with 0.209 mass%O was directly produced from TiO₂ powder consisting of micron-scale secondary structures (45–75 μm) formed by the agglomeration of nanosized primary particles. The results of this study demonstrate the feasibility of the suggested single-step magnesiothermic reduction of TiO₂ in high hydrogen chemical potential to produce Ti with a low O concentration.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01540"},"PeriodicalIF":8.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685857","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":"Green synthesis of octahedral layered-type material from Mn mine tailings as Fenton-like process catalyst for 4-Nitrophenol water remediation","authors":"Vanessa N. Lima ,&nbsp;Bruno A.M. Figueira ,&nbsp;Cícero I. Silva Filho ,&nbsp;Carine E.M. Lagrange ,&nbsp;Thiago S. Almeida ,&nbsp;Renata de S. Nascimento ,&nbsp;Bruna Rafaela Silva Ibiapina ,&nbsp;Emanuely J. Souza ,&nbsp;Simone Quaranta ,&nbsp;Giovanna Machado","doi":"10.1016/j.susmat.2025.e01552","DOIUrl":"10.1016/j.susmat.2025.e01552","url":null,"abstract":"<div><div>A novel iron(II)-birnessite catalyst was synthesized using manganese-ore beneficiation waste from a decommissioned tailings dam in the Amazon rainforest. The catalyst was produced through a simple, two-step procedure based on Na-birnessite preparation by hydrothermal treatment of annealed tailings, followed by sodium/iron (II) (Na⁺/Fe²⁺) cation exchange at room temperature. Such an approach allows for the synthesis of valuable Mn-based nanostructured materials minimizing costs and reducing the environmental impact stemming from mining operations. XRD, SEM, and TEM characterization confirmed a well-defined lamellar structure typical of birnessite, with an interplanar spacing of ∼7.22 Å after ion-exchange. Raman, FTIR, and EDS analyses further verified Fe²⁺ incorporation within the layered structure. The material was tested as a catalyst in a heterogeneous Fenton-like process for 4-nitrophenol (4NP) degradation under batch conditions. A complete parametric study assessed the influence of catalyst load, initial pH, H₂O₂ dosage and temperature. 4NP complete degradation was achieved. Besides, most of the phenolic compound was removed in less than 60 min using a 7.5 mM H₂O₂ solution (H₂O₂:catalyst ∼1.13). 4NP mineralization was additionally improved using a solar-assisted process capable of reaching a 90 % TOC (Total Organic Carbon) removal and decreasing effluent toxicity, as demonstrated by Artemia sp. mortality tests. Besides, a possible pollutant degradation mechanism was proposed by considering the role of Mn species in material's catalytic activity. Thus, the present material can be considered a step toward enhancing environmental sustainability. Indeed, the Fe-modified birnessite can be regarded as a “low-cost/low-end” catalyst for environmental remediation, joining together mining tailings reuse and organic pollutant removal.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":"45 ","pages":"Article e01552"},"PeriodicalIF":8.6,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704872","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}