Sustainable Materials and Technologies最新文献

{"title":"Micro-extrusion foaming fabricating porous polyester elastomeric fiber for using in radiative cooling fabrics","authors":"Zelin Wang ,&nbsp;Yushu Wang ,&nbsp;Bichi Chen,&nbsp;Hanyi Huang,&nbsp;Yaozong Li,&nbsp;Wentao Zhai","doi":"10.1016/j.susmat.2024.e01151","DOIUrl":"10.1016/j.susmat.2024.e01151","url":null,"abstract":"<div><div>Climate change has unleashed relentless global heatwaves, posing grave threats to the physical and mental well-being of outdoor laborers and the smooth functioning of society. Porous polymeric fibers exhibit promising potential in personal thermal management for wearable fabrics. Nevertheless, the absence of an environmentally friendly, cost-effective, and efficient method for producing the desired porous fibers remains a formidable challenge. Here, we introduce a pioneering micro-extrusion foaming technique for crafting elastic porous fibers endowed with dense longitudinally oriented cell morphologies, remarkable porosity of 69 % and elongation of 668 %. The technique enabled the continuous production of porous fibers exceeding 3000 m in length in a single operation, with fiber diameters controlled to approximately 0.25–0.55 mm. Fabrics woven from the elastic porous fiber offered a soft touch, proficiently reflecting more than 90.0 % of incident solar radiation and emitting 91.9 % of absorbed heat radiation, thereby achieving a theoretical radiant cooling power of 111.46 W/m² on sunlit days. Leveraging the controllable and scalable attributes of micro-extrusion foaming, the porous fiber is primed for practical deployment and expansion into diverse wearable applications.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532029","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":"Colours and microplastics: Bridging the gap between art, science and sustainability","authors":"Nilofar Asim ,&nbsp;Akmal Aizuddin Bin Zulkifli ,&nbsp;Nurul Syakirah Nazri ,&nbsp;Mohammad Torkashvand ,&nbsp;Marzieh Badiei ,&nbsp;Armin Rajabi ,&nbsp;Masita Mohammad","doi":"10.1016/j.susmat.2024.e01152","DOIUrl":"10.1016/j.susmat.2024.e01152","url":null,"abstract":"<div><div>The significant influence of colour on life and the numerous advantages of plastics over metals, ceramics, wood and other materials result in the incorporation of colour into polymers through a variety of techniques, including internally and externally. The widespread use of plastics, inappropriate trash disposal and inefficient recycling result in a substantial release of plastic into the environment. Environmental factors, such as heat, light, moisture, chemicals and wind, can degrade polymers, altering the composition, structure and morphology to a certain degree. This situation can result in the production of microplastics (MPs) and nanoplastics (NPs) and associated chemicals. Ecosystems are seriously endangered by materials resulting from continuous deterioration, fragmentation and ageing of plastics. Majority of the commonly used plastics are coloured, underscoring the importance of closely monitoring coloured MPs. The influence of colour on MP formation, environmental effect, identification and waste management topics has not received enough attention. This review article addresses various concerns regarding coloured MPs, including their abundance, leaking, ageing, waste management and sustainability. Moreover, this work is based on research from field-based articles on plastics, MPs and coloured MPs. In the context of plastic pollution, future strategies for more effective mitigation of coloured MPs were also explored. Furthermore, this work attempts to assist in creating a clear road map for decision-making, selecting the optimal option for a given goal and developing a plan for expanding and improving an existing strategy.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532031","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":"Experimental investigation and machine learning models for predicting flexural and tensile strengths of recycled concrete: Bridging the gap between sustainable materials and structural design","authors":"Syed Minhaj Saleem Kazmi,&nbsp;Muhammad Junaid Munir","doi":"10.1016/j.susmat.2024.e01149","DOIUrl":"10.1016/j.susmat.2024.e01149","url":null,"abstract":"<div><div>The sustainability of structural components requires recycled aggregate concrete (RC) to achieve adequate flexural and split tensile strengths for practical use. These strengths depend on mix design and the properties of recycled coarse aggregates (R-CA). The variability in R-CA sources and the inherent heterogeneity of RC complicate strength predictions. No existing model accounts for this variability, leaving a gap between sustainable materials and structural design. This study develops machine learning-based models to predict the flexural and split tensile strengths of RC, regardless of R-CA source and properties. Key factors such as water absorption, effective water-to-cement ratio, coarse aggregate-to-cement ratio, and R-CA replacement ratio are used for predictions. The impact of different R-CA types on RC and natural aggregate concrete (NC) is also experimentally analyzed. A dataset of 353 test results from this study and 33 prior studies is used, and various machine learning algorithms (MLA) are evaluated. Results show a 41 % and 23 % reduction in flexural and split tensile strengths of RC compared to NC, but acid and mechanically treated R-CA can recover up to 94 % and 93 % of NC's strengths, respectively. Among all MLA models, the gradient boost model depicted the highest accuracy in predictions for the flexural and tensile strengths of both RC and NC. This research introduces new equations and a C/C++ tool for predicting RC and NC strengths, contributing to sustainable concrete design and bridging the gap between research and practical application.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532026","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":"Electricity supply resiliency evaluation by a hybrid renewable energy system for a petrochemical plant: Frameworks and quantitative assessment methodologies","authors":"Samaneh Habibzadeh,&nbsp;Mohammad Hossein Jahangir,&nbsp;Fatemeh Razi Astaraei","doi":"10.1016/j.susmat.2024.e01139","DOIUrl":"10.1016/j.susmat.2024.e01139","url":null,"abstract":"<div><div>The escalation of harm inflicted upon energy systems, has spurred the investigation of energy system resilience. In this regard, the measurement of resilience capacity can serve as a valuable metric for assessing the energy system's ability to withstand a variety of events that may result in potential adverse outcomes. For renewable energy systems, the measurement of resilience is imperative due to the inherent unpredictability and unreliability in their nature. Often, resilience studies lack the comprehensiveness required to fully comprehend the intricate interdependencies within integrated hybrid renewable energy systems. This research delineates the essential factors required to facilitate a comprehensive understanding and advancement in the quantification of such integrated systems in small-scale. Pardis Petrochemical Company, located in Asalouyeh city, Iran, has been chosen as case study. Four distinct configurations of hybrid renewable energy systems—comprising Photovoltaic panels, Photovoltaic panels + Wind Turbines, Photovoltaic panels + Wave energy converters, and Photovoltaic panels + Wind Turbines + Wave energy converters— connected to grid, have been developed. These configurations are the result of a multi-objective optimization process, considering the following metrics: the cost of electricity (as an economic metric), CO₂ emissions (as an environmental metric), loss of power supply probability (as a reliability metric), and exergy efficiency (as a technical metric). Subsequently, a methodological framework for multicriteria decision support is introduced. This framework is constructed based on primary resilience dimensions, namely: “resist,” “restabilize,” “technology,” and “withstand” serve as a tool for measuring the resiliency of the optimized configurations. The findings indicate that the Photovoltaic panels + Wind Turbines + Wave Energy Converters configuration is as the most resilient system among the studied alternatives.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532027","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":"Fabrication of a 2D/2D g-C3N4@ZnTDA nanosheets catalyst for highly efficient degradation of 2,4-dibromophenol and improved flame retardancy of polyurethane foam","authors":"Zhoumei Xu,&nbsp;Fukai Chu,&nbsp;Chuanshen Wang,&nbsp;Xin Wang,&nbsp;Yanbei Hou,&nbsp;Weizhao Hu,&nbsp;Lei Song","doi":"10.1016/j.susmat.2024.e01154","DOIUrl":"10.1016/j.susmat.2024.e01154","url":null,"abstract":"<div><div>High charge separation and transfer efficiency are considered as key factors of photocatalysts in wastewater treatment applications. In this work, a high performance photocatalyst g-C₃N₄@ZnTDA was designed and applied through a facile solvothermal strategy. The microstructural, morphological, physicochemical, and photoelectrochemical properties of g-C₃N₄@ZnTDA were fully characterized. The photocatalytic activity of g-C₃N₄@ZnTDA nanoparticles under visible light source in degrading the 2,4-dibromophenol(2,4-dB) contaminants was also successfully studied. Additionally, the g-C₃N₄@ZnTDA composite demonstrates easy operation and good regeneration ability, making it highly promising for the efficient removal of phenolic pollutants from wastewater. Besides, a novel reutilization method for used catalyst as flame retardant and for PU foams was successfully testified. The MCN-3 as a fire-safety coating could reduce the heat release and improve flame retardancy of PU composites. This work opens a new window for valuable inspiration and structural design of reutilized MOF composites.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532028","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 spent heat pack towards Fe-Fe3O4@NC catalyst for ORR in direct methanol fuel cells and Al-air batteries","authors":"Keyru Serbara Bejigo ,&nbsp;Ruby Alphonse Raj ,&nbsp;Sang-Jae Kim","doi":"10.1016/j.susmat.2024.e01153","DOIUrl":"10.1016/j.susmat.2024.e01153","url":null,"abstract":"<div><div>The effective repurposing of waste materials is crucial for sustainable development. The widespread use of disposable iron-based chemical warmers (IBCW) generates substantial solid waste annually. In this study, IBCWs were repurposed as raw materials to synthesize different electrocatalyst composites comprising metallic and oxide forms of iron embedded in nitrogen-doped carbon (NC). The composites were evaluated as oxygen reduction reaction (ORR) catalysts. The optimized Fe-Fe₃O₄@NC demonstrated enhanced ORR kinetics, with an onset potential of 0.92 V and a half-wave potential of 0.86 V vs. RHE. As an air cathode for direct methanol fuel cell (DMFC), Fe-Fe₃O₄@NC achieved a power density of 33.3 mW cm⁻² at 88 mA cm⁻², demonstrating its practical applicability. Additionally, a quasi solid-state aluminium-air battery (SAAB) was assembled using this catalyst as the air cathode with a PVA-KOH gel electrolyte and the separator. The quasi SAAB exhibited an open circuit voltage (OCV) of 1.46 V, a power density of 40 mW cm^-2, and good rate capability compared to Pt/C. The combined effect of metallic and oxide iron with nitrogen doping enhances the overall catalytic activity. This study demonstrates that IBCWs can be effectively transformed into valuable catalysts for renewable energy applications, enabling clean and sustainable utilization of waste materials.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555649","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":"Enhancing electromagnetic interference mitigation: A comprehensive study on the synthesis and shielding capabilities of polypyrrole/cobalt ferrite nanocomposites","authors":"Moustafa A. Darwish ,&nbsp;M.M. Salem ,&nbsp;Alex V. Trukhanov ,&nbsp;Walaa Abd-Elaziem ,&nbsp;Atef Hamada ,&nbsp;Di Zhou ,&nbsp;Anwer S. Abd El-Hameed ,&nbsp;M. Khalid Hossain ,&nbsp;Enas H. El-Ghazzawy","doi":"10.1016/j.susmat.2024.e01150","DOIUrl":"10.1016/j.susmat.2024.e01150","url":null,"abstract":"<div><div>In a society increasingly infiltrated by digital and networking technologies, designing electromagnetic interference (EMI) shielding materials is critical for safeguarding sensitive electronic equipment and ensuring the smooth functioning of essential communication networks. This study focuses on the optimization of the properties of cobalt ferrite (CoFe₂O₄)/polypyrrole (PPy) nanocomposites made by in-situ polymerization used for electromagnetic (EM) shielding based on their magnetic and dielectric losses. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), and vector network analyzer (VNA) were employed to study the materials' physical and chemical characteristics. The findings demonstrate that the magnetic and electric properties of the materials composed of CoFe₂O₄ and PPy are substantially altered by the integration of CoFe₂O₄ and PPy. Adding PPy to CoFe₂O₄ reduces the real and imaginary parts of magnetic permeability, and the conductivity, dielectric constant, and dielectric loss are increased. These effects are advantageous for EM shielding applications. The high electromagnetic shielding performance mainly results from the enhanced interfacial polarization induced by interface region among CoFe₂O₄ and PPy molecules. The influence of the PPy matrix in altering the dielectric and magnetic loss factors (<em>tanδ</em>_<em>E</em> and <em>tanδ</em>_<em>M</em>) of the embedded ferrite particles is pronounced. Although CoFe₂O₄ shows excellent attenuation characteristics, it cannot optimally match impedance with free space, particularly at higher frequencies. In addition, material thickness and shielding efficiency adjust the reflection loss (<em>RL</em>) performance. The prepared composites can attenuate more than 95 % of the incident electromagnetic waves. This study emphasizes the benefits of employing composite materials in EMI shielding designs and the combined advantages of conductive and magnetic materials.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142446958","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":"Sustainable recycling of pure aluminum from waste chips under supergravity-enhanced separation: A cleaning process","authors":"Bolin Sun,&nbsp;Lei Guo,&nbsp;Zhe Wang,&nbsp;Xi Lan,&nbsp;Zhancheng Guo","doi":"10.1016/j.susmat.2024.e01148","DOIUrl":"10.1016/j.susmat.2024.e01148","url":null,"abstract":"<div><div>Large quantities of chips containing high levels of aluminum are always inevitably produced during machining process of aluminum products, which is a valuable renewable resource. In this paper, an environmental-friendly method for direct and continuous recovery of same-level recycled Al from waste chips under supergravity-induced was proposed. The oxide film covering the surface of the molten Al-chips was easily disrupted under super-gravity, and subsequently almost all of Al melt detached from the oxide film and flowed rapidly through the microporous ceramic foam filter, with a yield ratio of more than 97 %. During this process, all fine broken oxide-film particles and large amounts of primary iron-rich particles in the melt were captured in the complex channels of the filter, resulting in clean 1xxx series recycled Al with free inclusions and impurity iron content of less than 0.28 wt%. In addition, a sustainable process and a continuous centrifugal unit for recycling aluminum chips were designed, the economic and environmental advantages of which demonstrate the feasibility of sustainable regeneration of aluminum chip resources on an industrial scale via supergravity technique.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142532143","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":"Stable and reusable electrospun bio-composite fibrous membranes based on PLA and natural fillers for air filtration applications","authors":"Roberto Scaffaro ,&nbsp;Maria Clara Citarrella","doi":"10.1016/j.susmat.2024.e01146","DOIUrl":"10.1016/j.susmat.2024.e01146","url":null,"abstract":"<div><div>Today, air pollution due to fine dust is one of the most critical environmental challenges. To mitigate the potential further environmental impact of air filtration devices, it is essential to explore the use of biodegradable polymers combined with natural fillers, preferably sourced from waste materials, to develop stable, reusable and UV-resistant air filters suitable for outdoor applications. In this work, composite fibrous membranes based on polylactic acid (PLA) and natural fillers were prepared via electrospinning and tested for air filtration applications. Air filtration performances were evaluated at different flow rates, temperature and humidity condition, aiming to simulate outdoor conditions. The addition of 10 wt% of <em>Opuntia Ficus Indica</em> (OFI), <em>Posidonia Oceanica Leaves</em> (POL) or lignin (LIG) particles to PLA solution led to a decrease in fibers diameter increasing membranes filtration performances. PLA/OFI, PLA/POL and PLA/LIG composite membranes exhibited filtration efficiencies of 97.2 %, 99.4 %, 99.6 % for PM₃ at a flow rate of 32 L/min, and pressure drops of 114, 103, 105 Pa, respectively. The membranes demonstrated stability maintaining good filtration efficiency across different environmental conditions and after multiple reuse cycles. The addition of OFI and LIG powders also provided effective UV resistance, crucial for ensuring the longevity and performance of air filters exposed to outdoor conditions. These findings underscore the potential of these biodegradable composite membranes for sustainable indoor and outdoor air filtration solutions.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exceptionally boosted absorption of silicates by interfacial junctions and direct light–heat–energy storage using Mg(OH)2–(Co2SiO4–Co3O4)","authors":"Rui-Min Hao,&nbsp;En-Xu Ren,&nbsp;Wei Ran,&nbsp;Zhi-Bin Xu,&nbsp;Qin-Pei Wu","doi":"10.1016/j.susmat.2024.e01142","DOIUrl":"10.1016/j.susmat.2024.e01142","url":null,"abstract":"<div><div>Near-infrared (NIR) light absorption is essential for the effective utilization of photothermal solar energy, which is realized via the surface plasmon resonance of a high density of free charge carriers (FCCs). Herein, we demonstrate that S-scheme interfacial junctions (IJs) can substantially increase the FCC density and intensify absorption of silicates from the ultraviolet to NIR region. Numerous p–n IJs with S-scheme types are constructed within sheet-like Co₃O₄–Co₂SiO₄ nanoparticles, exceptionally boosting the light absorption capability over the entire solar spectrum. Moreover, this absorber can improve the photothermal performance of Mg(OH)₂ via a mixture of Mg(OH)₂–(Co₃O₄–Co₂SiO₄) composite. The photothermal dehydration conversion of Mg(OH)₂ in this mixture considerably improves by 6.7 times under 30-min irradiation. The reversibility of the photothermal hydration–dehydration cycles of Mg(OH)₂ improves by 18.3 times, and the thermal storage kinetics substantially improves via the reduction of the activation energy of dehydration (reduction of 25.4 %). Results indicate that Mg(OH)₂–Co₃O₄–Co₂SiO₄ is a promising candidate for a one-step system of photothermal conversion and energy storage.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433295","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}