Materials Today Sustainability最新文献_第8页

Enhanced stability and performance of LiNi0.8Mn0.1Co0.1O2 cathodes via vanadium-doped polyoxometalate coating 通过掺钒多金属氧酸盐涂层提高了LiNi0.8Mn0.1Co0.1O2阴极的稳定性和性能

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-11-04 DOI: 10.1016/j.mtsust.2025.101249

Nafiseh Bolghanabadi , Arcangelo Celeste , Sergio Brutti , Sayed Khatiboleslam Sadrnezhaad , Abdolreza Simchi

Nickel-rich layered cathodes, such as LiNi_0.8Mn_0.1Co_0.1O₂ (NMC811), offer high specific capacity and energy density but suffer from surface instability, cation mixing, and side reactions at the electrode-electrolyte interface. These issues lead to structural degradation, capacity fading, and reduced cyclic stability in lithium-ion batteries. In this study, we propose a strategy to engineer the interface of NMC811 cathodes with an ultrathin 3D-network vanadium-doped polyoxometalate (PMV) shell, synthesized via a facile wet chemical method, to enhance their electrochemical performance and cyclic stability. Structural characterizations reveal that the uniform PMV coating (thickness around 30–50 nm) preserve the crystal structure of NMC811 while enhancing the stability of the electrode-electrolyte interface and improving lithium-ion diffusion. Electrochemical studies determine that the PMV-coated cathodes achieve a superior initial discharge capacity of 217 mAh g⁻¹, compared to 175 mAh g⁻¹ for the uncoated NMC811 (at 0.1C). The rate capability of the PMV-coated cathode is also enhanced to gain a specific capacity of 87.4 mAh g⁻¹ at 5C, which significantly outperform the uncoated cathode. Detailed investigations indicate that the coating minimizes particle cracking and voltage fading, thus contributing to improved long-term performance and cyclic stability. Applying this ultrathin, ion-conductive PMV coating highlights a viable path for optimizing nickel-rich cathodes.

富镍层状阴极，如LiNi0.8Mn0.1Co0.1O2 (NMC811)，具有较高的比容量和能量密度，但存在表面不稳定、阳离子混合和电极-电解质界面副反应等问题。这些问题导致锂离子电池的结构退化、容量衰减和循环稳定性降低。在这项研究中，我们提出了一种通过易湿化学方法合成的超薄3d网络掺钒多金属氧酸盐（PMV）外壳来设计NMC811阴极界面的策略，以提高其电化学性能和循环稳定性。结构表征表明，均匀的PMV涂层（厚度约为30-50 nm）在保持NMC811晶体结构的同时，增强了电极-电解质界面的稳定性，改善了锂离子的扩散。电化学研究表明，pmv涂层阴极的初始放电容量为217 mAh g - 1，而未涂层的NMC811 （0.1C）的初始放电容量为175 mAh g - 1。pmv涂层阴极的倍率能力也得到了增强，在5C时获得了87.4 mAh g−1的比容量，显著优于未涂层阴极。详细的研究表明，涂层最大限度地减少了颗粒裂纹和电压褪色，从而有助于提高长期性能和循环稳定性。应用这种超薄、离子导电的PMV涂层突出了优化富镍阴极的可行途径。

{"title":"Enhanced stability and performance of LiNi0.8Mn0.1Co0.1O2 cathodes via vanadium-doped polyoxometalate coating","authors":"Nafiseh Bolghanabadi , Arcangelo Celeste , Sergio Brutti , Sayed Khatiboleslam Sadrnezhaad , Abdolreza Simchi","doi":"10.1016/j.mtsust.2025.101249","DOIUrl":"10.1016/j.mtsust.2025.101249","url":null,"abstract":"<div><div>Nickel-rich layered cathodes, such as LiNi<sub>0.8</sub>Mn<sub>0.1</sub>Co<sub>0.1</sub>O<sub>2</sub> (NMC811), offer high specific capacity and energy density but suffer from surface instability, cation mixing, and side reactions at the electrode-electrolyte interface. These issues lead to structural degradation, capacity fading, and reduced cyclic stability in lithium-ion batteries. In this study, we propose a strategy to engineer the interface of NMC811 cathodes with an ultrathin 3D-network vanadium-doped polyoxometalate (PMV) shell, synthesized via a facile wet chemical method, to enhance their electrochemical performance and cyclic stability. Structural characterizations reveal that the uniform PMV coating (thickness around 30–50 nm) preserve the crystal structure of NMC811 while enhancing the stability of the electrode-electrolyte interface and improving lithium-ion diffusion. Electrochemical studies determine that the PMV-coated cathodes achieve a superior initial discharge capacity of 217 mAh g<sup>−1</sup>, compared to 175 mAh g<sup>−1</sup> for the uncoated NMC811 (at 0.1C). The rate capability of the PMV-coated cathode is also enhanced to gain a specific capacity of 87.4 mAh g<sup>−1</sup> at 5C, which significantly outperform the uncoated cathode. Detailed investigations indicate that the coating minimizes particle cracking and voltage fading, thus contributing to improved long-term performance and cyclic stability. Applying this ultrathin, ion-conductive PMV coating highlights a viable path for optimizing nickel-rich cathodes.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101249"},"PeriodicalIF":7.9,"publicationDate":"2025-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145525532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in nanocatalysts for biofuel production: Mechanisms, performance, and future perspectives 生物燃料生产纳米催化剂的进展：机制、性能和未来展望

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-11-04 DOI: 10.1016/j.mtsust.2025.101246

Sherif Ishola Mustapha , Ifeanyi Michael Smarte Anekwe , Kabiru Bab Muritala , Yusuf Makarfi Isa

The global pursuit of sustainable and low-carbon energy solutions has intensified research into biofuels as viable alternatives to fossil fuels. Yet, conventional catalytic processes often suffer from limitations such as low conversion efficiency, poor selectivity, and limited catalyst recyclability. Recent advances in nanotechnology have introduced nanocatalysts as powerful tools to overcome these barriers, owing to their high surface-to-volume ratio, tunable physicochemical properties, and superior catalytic performance. This review critically examines the application of nanocatalysts in major biofuel production routes, including transesterification, pyrolysis, hydrothermal liquefaction, hydrodeoxygenation, hydrolysis, fermentation, and steam reforming. The roles of metal and metal oxide nanoparticles, carbon-based nanomaterials, magnetic nanocomposites, zeolites, and bimetallic or multimetallic systems are comprehensively discussed in terms of catalytic mechanisms, yield enhancement, and reusability. The comparative advantages of nanocatalysts over traditional systems, particularly in reaction kinetics, thermal stability, and adaptability to diverse feedstocks, are emphasized. Furthermore, the review explores emerging strategies such as green synthesis methods, hybrid nanostructures, and integration into circular biorefinery platforms. Key challenges, including nanoparticle agglomeration, scalability, and long-term stability, are also outlined. By consolidating current advancements and identifying future research directions, this article highlights the transformative potential of nanocatalysts in improving biofuel productivity, process economics, and environmental sustainability, ultimately supporting the global transition toward renewable energy systems.

全球对可持续和低碳能源解决方案的追求，加强了对生物燃料作为化石燃料可行替代品的研究。然而，传统的催化工艺往往存在转化效率低、选择性差、催化剂可回收性有限等局限性。纳米技术的最新进展使纳米催化剂成为克服这些障碍的有力工具，因为它们具有高的表面体积比、可调的物理化学性质和优越的催化性能。本文综述了纳米催化剂在生物燃料生产中的主要应用，包括酯交换、热解、水热液化、加氢脱氧、水解、发酵和蒸汽重整。本文从催化机理、产率提高和可重复利用等方面全面讨论了金属和金属氧化物纳米颗粒、碳基纳米材料、磁性纳米复合材料、沸石和双金属或多金属体系的作用。纳米催化剂相对于传统系统的优势，特别是在反应动力学、热稳定性和对不同原料的适应性方面，被强调。此外，本文还探讨了新兴的策略，如绿色合成方法、混合纳米结构和融入循环生物炼制平台。关键的挑战，包括纳米颗粒团聚，可扩展性和长期稳定性，也概述。通过巩固目前的进展和确定未来的研究方向，本文强调了纳米催化剂在提高生物燃料生产率、过程经济性和环境可持续性方面的变革潜力，最终支持全球向可再生能源系统的过渡。

{"title":"Advances in nanocatalysts for biofuel production: Mechanisms, performance, and future perspectives","authors":"Sherif Ishola Mustapha , Ifeanyi Michael Smarte Anekwe , Kabiru Bab Muritala , Yusuf Makarfi Isa","doi":"10.1016/j.mtsust.2025.101246","DOIUrl":"10.1016/j.mtsust.2025.101246","url":null,"abstract":"<div><div>The global pursuit of sustainable and low-carbon energy solutions has intensified research into biofuels as viable alternatives to fossil fuels. Yet, conventional catalytic processes often suffer from limitations such as low conversion efficiency, poor selectivity, and limited catalyst recyclability. Recent advances in nanotechnology have introduced nanocatalysts as powerful tools to overcome these barriers, owing to their high surface-to-volume ratio, tunable physicochemical properties, and superior catalytic performance. This review critically examines the application of nanocatalysts in major biofuel production routes, including transesterification, pyrolysis, hydrothermal liquefaction, hydrodeoxygenation, hydrolysis, fermentation, and steam reforming. The roles of metal and metal oxide nanoparticles, carbon-based nanomaterials, magnetic nanocomposites, zeolites, and bimetallic or multimetallic systems are comprehensively discussed in terms of catalytic mechanisms, yield enhancement, and reusability. The comparative advantages of nanocatalysts over traditional systems, particularly in reaction kinetics, thermal stability, and adaptability to diverse feedstocks, are emphasized. Furthermore, the review explores emerging strategies such as green synthesis methods, hybrid nanostructures, and integration into circular biorefinery platforms. Key challenges, including nanoparticle agglomeration, scalability, and long-term stability, are also outlined. By consolidating current advancements and identifying future research directions, this article highlights the transformative potential of nanocatalysts in improving biofuel productivity, process economics, and environmental sustainability, ultimately supporting the global transition toward renewable energy systems.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101246"},"PeriodicalIF":7.9,"publicationDate":"2025-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145465424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Demonstrating circularity in thermal spraying: Converting waste to wealth 展示热喷涂的循环性：变废为宝

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-11-04 DOI: 10.1016/j.mtsust.2025.101251

Rahul Jude Alroy , Stefan Björklund , Radek Mušálek , František Lukáč , Vasanth Gopal , Peter Kjeldsteen , Olav Norheim , Shrikant Joshi

Typically, 40–60 % of the injected powder feedstock in most thermal spray processes ends up as overspray waste and is a prominent technology drawback. This unutilized powder not only represents significant raw material loss but also poses disposal challenges. This study examines the prospect of the possible reuse of overspray waste that can considerably enhance the sustainability of thermal spray processes. Overspray waste from high velocity oxy fuel (HVOF) spraying of a WC-20Cr₃C₂-7Ni powder from an industrial spray shop was systematically collected and characterized for morphology, particle size distribution, and phase composition. This overspray powder was considered for reuse as feedstock for both HVOF and high velocity air fuel (HVAF) spraying. The resulting coatings were evaluated for microstructure, phase constitution, hardness and wear performance, and their characteristics were compared with coatings produced from virgin powder deposited via HVOF and HVAF. The results were noted to be extremely encouraging, with HVAF coatings using HVOF overspray outperforming HVOF coatings with virgin powder feedstock, making a strong case to investigate further possibilities to gainfully utilize thermal spray waste from varied sources. Considering that tungsten and chromium are critical raw materials, with tungsten bearing a particularly high carbon footprint, this study also quantitatively assesses the sustainability benefits of reusing the overspray powder. This illustrative exercise reveals a reduction in energy consumption and CO₂ emissions by a factor of two to three, along with a three-to-fivefold reduction in production costs.

通常，在大多数热喷涂过程中，40-60 %的注入粉末原料最终成为过度喷涂废物，这是一个突出的技术缺点。这些未被利用的粉末不仅代表了巨大的原材料损失，而且带来了处理挑战。本研究探讨了可能重复使用的过度喷雾废物的前景，可以大大提高热喷涂过程的可持续性。系统收集了某工业喷涂车间对WC-20Cr3C2-7Ni粉末进行高速氧燃料（HVOF）喷涂后的过喷废弃物，并对其形貌、粒度分布和相组成进行了表征。这种过度喷雾粉末被认为可以作为HVOF和高速空气燃料（HVAF）喷涂的原料。对制备的涂层进行了显微组织、相组成、硬度和磨损性能的评价，并与HVOF和HVAF制备的涂层进行了比较。结果非常令人鼓舞，使用HVOF过度喷涂的HVOF涂层的性能优于使用原始粉末原料的HVOF涂层，这为进一步研究各种来源的热喷涂废料的有效利用可能性提供了强有力的理由。考虑到钨和铬是关键的原材料，钨的碳足迹特别高，本研究还定量评估了重复使用过度喷涂粉末的可持续性效益。这个说明性的练习揭示了能源消耗和二氧化碳排放量减少了2到3倍，同时生产成本降低了3到5倍。

{"title":"Demonstrating circularity in thermal spraying: Converting waste to wealth","authors":"Rahul Jude Alroy , Stefan Björklund , Radek Mušálek , František Lukáč , Vasanth Gopal , Peter Kjeldsteen , Olav Norheim , Shrikant Joshi","doi":"10.1016/j.mtsust.2025.101251","DOIUrl":"10.1016/j.mtsust.2025.101251","url":null,"abstract":"<div><div>Typically, 40–60 % of the injected powder feedstock in most thermal spray processes ends up as overspray waste and is a prominent technology drawback. This unutilized powder not only represents significant raw material loss but also poses disposal challenges. This study examines the prospect of the possible reuse of overspray waste that can considerably enhance the sustainability of thermal spray processes. Overspray waste from high velocity oxy fuel (HVOF) spraying of a WC-20Cr<sub>3</sub>C<sub>2</sub>-7Ni powder from an industrial spray shop was systematically collected and characterized for morphology, particle size distribution, and phase composition. This overspray powder was considered for reuse as feedstock for both HVOF and high velocity air fuel (HVAF) spraying. The resulting coatings were evaluated for microstructure, phase constitution, hardness and wear performance, and their characteristics were compared with coatings produced from virgin powder deposited via HVOF and HVAF. The results were noted to be extremely encouraging, with HVAF coatings using HVOF overspray outperforming HVOF coatings with virgin powder feedstock, making a strong case to investigate further possibilities to gainfully utilize thermal spray waste from varied sources. Considering that tungsten and chromium are critical raw materials, with tungsten bearing a particularly high carbon footprint, this study also quantitatively assesses the sustainability benefits of reusing the overspray powder. This illustrative exercise reveals a reduction in energy consumption and CO<sub>2</sub> emissions by a factor of two to three, along with a three-to-fivefold reduction in production costs.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101251"},"PeriodicalIF":7.9,"publicationDate":"2025-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145465457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strategic pH-controlled synthesis of single-crystal LiNi0.6Co0.2Mn0.2O2 for maximized structural and electrochemical optimization in lithium-ion batteries 锂离子电池结构和电化学优化的战略性ph控制单晶LiNi0.6Co0.2Mn0.2O2合成

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-11-04 DOI: 10.1016/j.mtsust.2025.101250

Donny Marihot Siburian , Yi Cheng , Hai Liu , Zhenjiang He , Yunjiao Li , Yulou Wu , Wenchao Hua , Kaihua Xu

The development of single-crystalline LiNi_0.6Co_0.2Mn_0.2O₂ (NCM622) cathodes has garnered significant interest in lithium-ion batteries due to their superior cycle stability and capacity retention compared to polycrystalline counterparts. However, achieving high-performance single-crystalline NCM622 cathodes remains challenging due to uncontrolled particle growth and side reactions. This study highlights the importance of pH control in precursor synthesis, as it crucially influences nucleation and crystallinity, essential for single-crystal formation. Optimized conditions (pH = 11.2, denoted as HP-4/SC-4) promoted solid-state nucleation and controlled particle growth, enabling the formation of single crystals during sintering. The SC-4 cathode exhibited an initial discharge capacity of 172.56 mAh g⁻¹ with 87.78 % Coulombic efficiency, retaining 80.10 % capacity after 200 cycles. Notably, Coulombic efficiency stabilized above 99 % after 200 cycles, indicating minimal side reactions. Structural characterization confirmed the stability of the single-crystal architecture, underscoring its potential for high-energy battery applications and long-term cycle performance.

与多晶阴极相比，单晶LiNi0.6Co0.2Mn0.2O2 （NCM622）阴极具有优越的循环稳定性和容量保持性，因此在锂离子电池领域引起了极大的兴趣。然而，由于不受控制的颗粒生长和副反应，实现高性能单晶NCM622阴极仍然具有挑战性。这项研究强调了pH控制在前驱体合成中的重要性，因为它对单晶形成至关重要的成核和结晶度有重要影响。优化后的条件（pH = 11.2，表示为HP-4/SC-4）促进了固态成核，控制了颗粒生长，使烧结过程中形成单晶。SC-4阴极的初始放电容量为172.56 mAh g−1，库仑效率为87.78 %，循环200次后容量保持80.10 %。值得注意的是，经过200次循环后，库仑效率稳定在99% %以上，表明副反应最小。结构表征证实了单晶结构的稳定性，强调了其在高能电池应用和长期循环性能方面的潜力。

{"title":"Strategic pH-controlled synthesis of single-crystal LiNi0.6Co0.2Mn0.2O2 for maximized structural and electrochemical optimization in lithium-ion batteries","authors":"Donny Marihot Siburian , Yi Cheng , Hai Liu , Zhenjiang He , Yunjiao Li , Yulou Wu , Wenchao Hua , Kaihua Xu","doi":"10.1016/j.mtsust.2025.101250","DOIUrl":"10.1016/j.mtsust.2025.101250","url":null,"abstract":"<div><div>The development of single-crystalline LiNi<sub>0.6</sub>Co<sub>0.2</sub>Mn<sub>0.2</sub>O<sub>2</sub> (NCM622) cathodes has garnered significant interest in lithium-ion batteries due to their superior cycle stability and capacity retention compared to polycrystalline counterparts. However, achieving high-performance single-crystalline NCM622 cathodes remains challenging due to uncontrolled particle growth and side reactions. This study highlights the importance of pH control in precursor synthesis, as it crucially influences nucleation and crystallinity, essential for single-crystal formation. Optimized conditions (pH = 11.2, denoted as HP-4/SC-4) promoted solid-state nucleation and controlled particle growth, enabling the formation of single crystals during sintering. The SC-4 cathode exhibited an initial discharge capacity of 172.56 mAh g<sup>−1</sup> with 87.78 % Coulombic efficiency, retaining 80.10 % capacity after 200 cycles. Notably, Coulombic efficiency stabilized above 99 % after 200 cycles, indicating minimal side reactions. Structural characterization confirmed the stability of the single-crystal architecture, underscoring its potential for high-energy battery applications and long-term cycle performance.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101250"},"PeriodicalIF":7.9,"publicationDate":"2025-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145525531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of multiple solid wastes as subgrade material in expressway subgrade: field test, microcosmic mechanism and sustainability 多种固体废物作为路基材料在高速公路路基中的应用：现场试验、微观机理及可持续性

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-11-03 DOI: 10.1016/j.mtsust.2025.101247

Liping Zhang , Mingrui Zhao , Xiaoqing Zhao , Bo Huang , Zimeng Zhou , Tianfeng Yang

Based on the concept of sustainable development, these solid wastes, such as soda residue (SR) and phosphate tailing (PT) were used to collaboratively prepare soda residue modified fishpond soil (SRS) and phosphate tailings-soda residue modified fishpond soil (PRS), stabilized by externally adding lime, which were applied as subgrade materials in expressway engineering. Through field tests and comparisons with lime-stabilized fishpond soil (LFS), the feasibility and advantages of them were verified as subgrade materials. Further microstructural analysis using XRD and SEM tests revealed its reaction mechanisms and microstructural characteristics. Additionally, carbon emissions and their economic assessments were conducted. As the curing time increased, the mechanical properties of SRS, PRS, and LFS all improved. After 7 days of curing, the value of CBR_f, MR_f, deflection, and DCPI of SRS are 71.1 %, 151.2 MPa, 68.2 (0.01 mm), and 1.01 cm/blow, respectively; for PRS, these values are 79.6 %, 164.4 MPa, 59.9 (0.01 mm), and 0.95 cm/blow; and for LFS, the values are 63.6 %, 131.0 MPa, 69.3 (0.01 mm), and 1.09 cm/blow. The road performances of SRS and PRS are slightly superior to those of LFS. XRD and SEM analysis indicate that the reticulated C-S-H and short-columnar AFt in the SRS and PRS systems fill the pores, thereby contributing to the development of strength. Sustainability analysis shows that SRS and PRS are environmentally friendly, low-carbon, and economically advantageous subgrade materials, suitable for application in the subgrade of expressways and highways.

基于可持续发展的理念，利用碱渣（SR）和磷酸尾渣（PT）等固体废弃物协同制备碱渣改性鱼塘土（SRS）和磷酸尾渣-碱渣改性鱼塘土（PRS），通过外加石灰稳定，作为高速公路工程路基材料。通过现场试验和与石灰稳定鱼塘土（LFS）的对比，验证了其作为路基材料的可行性和优越性。通过XRD和SEM对其进行微观结构分析，揭示了其反应机理和微观结构特征。此外，还进行了碳排放及其经济评估。随着固化时间的延长，SRS、PRS和LFS的力学性能均有所提高。养护7 d后，SRS的CBRf、MRf、挠度和DCPI分别为71.1 %、151.2 MPa、68.2（0.01 mm）和1.01 cm/blow；PRS值分别为79.6% %、164.4 MPa、59.9（0.01 mm）和0.95 cm/blow；LFS分别为63.6 %、131.0 MPa、69.3（0.01 mm）和1.09 cm/blow。SRS和PRS的道路性能略优于LFS。XRD和SEM分析表明，SRS和PRS体系中网状的C-S-H和短柱状的AFt填充了孔隙，促进了强度的发展。可持续性分析表明，SRS和PRS是一种环境友好、低碳、经济优势的路基材料，适合在高速公路路基中应用。

{"title":"Application of multiple solid wastes as subgrade material in expressway subgrade: field test, microcosmic mechanism and sustainability","authors":"Liping Zhang , Mingrui Zhao , Xiaoqing Zhao , Bo Huang , Zimeng Zhou , Tianfeng Yang","doi":"10.1016/j.mtsust.2025.101247","DOIUrl":"10.1016/j.mtsust.2025.101247","url":null,"abstract":"<div><div>Based on the concept of sustainable development, these solid wastes, such as soda residue (SR) and phosphate tailing (PT) were used to collaboratively prepare soda residue modified fishpond soil (SRS) and phosphate tailings-soda residue modified fishpond soil (PRS), stabilized by externally adding lime, which were applied as subgrade materials in expressway engineering. Through field tests and comparisons with lime-stabilized fishpond soil (LFS), the feasibility and advantages of them were verified as subgrade materials. Further microstructural analysis using XRD and SEM tests revealed its reaction mechanisms and microstructural characteristics. Additionally, carbon emissions and their economic assessments were conducted. As the curing time increased, the mechanical properties of SRS, PRS, and LFS all improved. After 7 days of curing, the value of <em>CBR</em><sub>f</sub>, <em>MR</em><sub>f</sub>, deflection, and <em>DCPI</em> of SRS are 71.1 %, 151.2 MPa, 68.2 (0.01 mm), and 1.01 cm/blow, respectively; for PRS, these values are 79.6 %, 164.4 MPa, 59.9 (0.01 mm), and 0.95 cm/blow; and for LFS, the values are 63.6 %, 131.0 MPa, 69.3 (0.01 mm), and 1.09 cm/blow. The road performances of SRS and PRS are slightly superior to those of LFS. XRD and SEM analysis indicate that the reticulated C-S-H and short-columnar AFt in the SRS and PRS systems fill the pores, thereby contributing to the development of strength. Sustainability analysis shows that SRS and PRS are environmentally friendly, low-carbon, and economically advantageous subgrade materials, suitable for application in the subgrade of expressways and highways.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101247"},"PeriodicalIF":7.9,"publicationDate":"2025-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145465423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring pilot-scale lignin depolymerization via nanoparticle size in water: A sustainable qualitative method 监测中试规模木质素解聚通过纳米颗粒大小在水中：一个可持续的定性方法

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-10-25 DOI: 10.1016/j.mtsust.2025.101245

Marc Comí, Ekiñe Apellaniz, Paul Jusner, Balaji Sridharan, Kelly Servaes, Richard Vendamme

Lignin is the most abundant aromatic bioresource, but the complexity of its biopolymer structure hinders its use in many applications. Large-scale continuous systems for lignin upgrading via solvolysis or catalytic depolymerization are currently being developed to produce more defined and application-specific lignin oligomers. A key factor in the scale-up of the conversion process is monitoring the molecular weight of lignin fractions throughout the operation. However, traditional analytical methods such as gel permeation chromatography (GPC) are slow, while a fast response is essential to prevent significant product losses. In this study, we developed a simple, rapid, and qualitative method to assess the molecular weight range of the lignin-derived products during continuous depolymerization runs. This approach is based on establishing strong correlations between lignin molecular structure and nanoparticle size in aqueous dispersion. By optimizing lignin nanoparticle (LNP) fabrication for specific lignin fractions within a defined molecular weight range, we tested a series of lignin samples. The results obtained from GPC and LNP size analysis were compared to validate the accuracy of our method. Finally, the LNP-based qualitative method was applied to a pilot-scale depolymerization run to track potential deviations in molecular weight in the final product. Our findings demonstrate that LNP size can serve as a simple, reliable, and rapid technique for evaluating the molecular weight of depolymerized lignin. This method offers valuable potential for future industrial processes involving this abundant renewable resource.

木质素是最丰富的芳香生物资源，但其生物聚合物结构的复杂性阻碍了它的广泛应用。目前正在开发通过溶剂分解或催化解聚进行木质素升级的大规模连续系统，以生产更明确和特定应用的木质素低聚物。放大转化过程的一个关键因素是在整个操作过程中监测木质素组分的分子量。然而，传统的分析方法，如凝胶渗透色谱（GPC）是缓慢的，而快速响应是必不可少的，以防止重大的产品损失。在这项研究中，我们开发了一种简单、快速、定性的方法来评估连续解聚过程中木质素衍生产品的分子量范围。这种方法是基于建立木质素分子结构和纳米颗粒大小在水分散之间的强相关性。通过优化木质素纳米颗粒（LNP）在特定分子量范围内的特定木质素组分的制造，我们测试了一系列木质素样品。比较了GPC和LNP粒度分析的结果，验证了方法的准确性。最后，将基于lnp的定性方法应用于中试解聚运行，以跟踪最终产品中分子量的潜在偏差。我们的研究结果表明LNP大小可以作为一种简单、可靠和快速的评估解聚木质素分子量的技术。这种方法为涉及这种丰富的可再生资源的未来工业过程提供了宝贵的潜力。

{"title":"Monitoring pilot-scale lignin depolymerization via nanoparticle size in water: A sustainable qualitative method","authors":"Marc Comí, Ekiñe Apellaniz, Paul Jusner, Balaji Sridharan, Kelly Servaes, Richard Vendamme","doi":"10.1016/j.mtsust.2025.101245","DOIUrl":"10.1016/j.mtsust.2025.101245","url":null,"abstract":"<div><div>Lignin is the most abundant aromatic bioresource, but the complexity of its biopolymer structure hinders its use in many applications. Large-scale continuous systems for lignin upgrading via solvolysis or catalytic depolymerization are currently being developed to produce more defined and application-specific lignin oligomers. A key factor in the scale-up of the conversion process is monitoring the molecular weight of lignin fractions throughout the operation. However, traditional analytical methods such as gel permeation chromatography (GPC) are slow, while a fast response is essential to prevent significant product losses. In this study, we developed a simple, rapid, and qualitative method to assess the molecular weight range of the lignin-derived products during continuous depolymerization runs. This approach is based on establishing strong correlations between lignin molecular structure and nanoparticle size in aqueous dispersion. By optimizing lignin nanoparticle (LNP) fabrication for specific lignin fractions within a defined molecular weight range, we tested a series of lignin samples. The results obtained from GPC and LNP size analysis were compared to validate the accuracy of our method. Finally, the LNP-based qualitative method was applied to a pilot-scale depolymerization run to track potential deviations in molecular weight in the final product. Our findings demonstrate that LNP size can serve as a simple, reliable, and rapid technique for evaluating the molecular weight of depolymerized lignin. This method offers valuable potential for future industrial processes involving this abundant renewable resource.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101245"},"PeriodicalIF":7.9,"publicationDate":"2025-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145417025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recovery, separation, and quality-based reutilization of PET in waste blended fabrics: A review 废混纺织物中PET的回收、分离和质量再利用综述

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-10-25 DOI: 10.1016/j.mtsust.2025.101242

Junge Zhu , Fengshan Zhou , Huan Li , Dan Liu , Wenjun Long , Yirong Zhan

The high-value use of PET, one of the key ingredients in blended fabrics, will be a crucial component in fostering the development of a closed loop in the textile industry cycle. This study examines the problem of separating and reusing waste blended fabrics, presents the most recent developments in this area, thoroughly examines the methods used to separate PET and cotton, assesses the economic and industrial viability of reusing the components, and concludes with suggestions for solutions. With the goal of transforming the textile industry from a polluter to a major contributor to accelerating the world's admirable aspirations to achieve the United Nations Sustainable Development Goals (SDGs) by 2030, this review serves as a catalyst for the industry by offering a theoretical reference for the separation, recycling, and reuse of waste blended fabrics.

涤纶是混纺织物的关键成分之一，其高价值利用将成为促进纺织工业闭环发展的关键组成部分。本研究探讨了废弃混纺织物的分离和再利用问题，介绍了该领域的最新发展，全面研究了用于分离PET和棉花的方法，评估了再利用这些成分的经济和工业可行性，并提出了解决方案建议。我们的目标是将纺织业从污染者转变为主要贡献者，以加速实现世界在2030年实现联合国可持续发展目标（sdg）的令人钦佩的愿望，本综述通过为废旧混纺织物的分离、回收和再利用提供理论参考，为该行业提供了催化剂。

引用次数: 0

Recent advances in inorganic binary solar cells 无机二元太阳能电池的最新进展

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-10-11 DOI: 10.1016/j.mtsust.2025.101238

Mohammad I. Hossain , Abdulaziz A. Alaswad , Fahhad H. Alharbi

The solar cell industry has long been dominated by various silicon technologies, along with a limited range of thin-film options such as cadmium telluride, copper–indium–gallium selenide (CIGS), and a few III-V materials. This trend is also reflected in the current research landscape. The successful development of high-efficiency solar cells using alternative materials could significantly enhance industry and help bridge the competitiveness gap with other energy sources. In this review, we explore recent advancements in solar cells that utilize inorganic binary materials, focusing primarily on single

p

-

n

junction designs. We highlight twenty-three alternative semiconductor materials, emphasizing their maximum efficiencies and the key challenges encountered in their applications.

长期以来，太阳能电池行业一直由各种硅技术主导，以及有限范围的薄膜选择，如碲化镉、铜铟镓硒化（CIGS）和一些III-V材料。这一趋势也反映在当前的研究领域。使用替代材料的高效太阳能电池的成功开发可以大大增强工业，并有助于缩小与其他能源的竞争力差距。在这篇综述中，我们探讨了利用无机二元材料的太阳能电池的最新进展，主要集中在单p-n结设计上。我们重点介绍了23种可替代的半导体材料，强调了它们的最大效率和在应用中遇到的关键挑战。

引用次数: 0

Applying excess wind power to green hydrogen production: A simulation approach to improving energy utilization in Greece's non-interconnected islands 将多余的风能应用于绿色氢气生产：提高希腊非互联岛屿能源利用率的模拟方法

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-10-10 DOI: 10.1016/j.mtsust.2025.101244

Giorgos Varras , Michail Chalaris

This study presents a practical and forward-looking approach to improving renewable energy integration within the isolated power systems of Greece's Non-Interconnected Islands (NIIs). It addresses a key challenge faced by such regions: the significant curtailment of wind energy due to infrastructure limitations, lack of interconnection, and the absence of grid-scale storage. Focusing on a medium-sized island as a representative case, the analysis introduces a tailored methodology for estimating excess wind output, combining hourly operational data with turbine-specific performance characteristics to assess the extent of untapped renewable potential.

The proposed system design involves coupling Proton Exchange Membrane (PEM) electrolysis with Reverse Osmosis (RO) desalination to produce green hydrogen using surplus wind power, even in water-scarce environments. Simulation results suggest that, under existing constraints, approximately 100 metric tons of hydrogen could be produced annually—energy that would otherwise go unused. Among the storage solutions evaluated, Compressed Gaseous Hydrogen (CGH₂) is identified as the most practical for this context, offering safety, scalability, and compatibility with local infrastructure.

In addition to technical feasibility, the study considers logistical aspects of hydrogen transport and favors CGH₂-based distribution via road trailers, aligning well with the decentralized nature of island systems. Beyond operational benefits, the approach holds broader implications for energy autonomy, reduced fossil fuel dependency, and environmental sustainability. Its originality lies in integrating excess wind recovery, water treatment, and hydrogen production into a unified, replicable framework, suited for real-world application in remote island contexts seeking resilient and clean energy alternatives.

本研究提出了一种实用和前瞻性的方法来改善希腊非互联岛屿（NIIs）孤立电力系统内的可再生能源整合。它解决了这些地区面临的一个关键挑战：由于基础设施限制、缺乏互联和缺乏电网规模的存储，风能的大量削减。以一个中型岛屿为例，分析介绍了一种量身定制的方法来估计多余的风力输出，将每小时的运行数据与涡轮机特定的性能特征相结合，以评估未开发的可再生能源潜力的程度。提出的系统设计包括耦合质子交换膜（PEM）电解和反渗透（RO）脱盐，即使在缺水的环境中也能利用剩余的风能生产绿色氢。模拟结果表明，在现有的限制条件下，每年可以生产大约100公吨的氢，否则这些能源将被闲置。在评估的存储解决方案中，压缩气体氢（CGH2）被认为是最实用的，具有安全性、可扩展性和与本地基础设施的兼容性。除了技术可行性之外，该研究还考虑了氢运输的后勤方面，并赞成通过道路拖车进行基于cgh2的分配，这与岛屿系统的分散性很好地吻合。除了运营效益外，该方法还对能源自主、减少对化石燃料的依赖和环境可持续性具有更广泛的影响。它的独创性在于将多余的风能回收、水处理和氢气生产整合到一个统一的、可复制的框架中，适合在偏远岛屿环境中寻求弹性和清洁能源替代品的实际应用。

{"title":"Applying excess wind power to green hydrogen production: A simulation approach to improving energy utilization in Greece's non-interconnected islands","authors":"Giorgos Varras , Michail Chalaris","doi":"10.1016/j.mtsust.2025.101244","DOIUrl":"10.1016/j.mtsust.2025.101244","url":null,"abstract":"<div><div>This study presents a practical and forward-looking approach to improving renewable energy integration within the isolated power systems of Greece's Non-Interconnected Islands (NIIs). It addresses a key challenge faced by such regions: the significant curtailment of wind energy due to infrastructure limitations, lack of interconnection, and the absence of grid-scale storage. Focusing on a medium-sized island as a representative case, the analysis introduces a tailored methodology for estimating excess wind output, combining hourly operational data with turbine-specific performance characteristics to assess the extent of untapped renewable potential.</div><div>The proposed system design involves coupling Proton Exchange Membrane (PEM) electrolysis with Reverse Osmosis (RO) desalination to produce green hydrogen using surplus wind power, even in water-scarce environments. Simulation results suggest that, under existing constraints, approximately 100 metric tons of hydrogen could be produced annually—energy that would otherwise go unused. Among the storage solutions evaluated, Compressed Gaseous Hydrogen (CGH<sub>2</sub>) is identified as the most practical for this context, offering safety, scalability, and compatibility with local infrastructure.</div><div>In addition to technical feasibility, the study considers logistical aspects of hydrogen transport and favors CGH<sub>2</sub>-based distribution via road trailers, aligning well with the decentralized nature of island systems. Beyond operational benefits, the approach holds broader implications for energy autonomy, reduced fossil fuel dependency, and environmental sustainability. Its originality lies in integrating excess wind recovery, water treatment, and hydrogen production into a unified, replicable framework, suited for real-world application in remote island contexts seeking resilient and clean energy alternatives.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101244"},"PeriodicalIF":7.9,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing melting of nanoparticle-enriched phase change materials in thermal energy storage systems 增强纳米颗粒富集相变材料在热储能系统中的熔融性能

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2025-10-10 DOI: 10.1016/j.mtsust.2025.101243

Mohib Hussain , Faten Labassi , Hassan Waqas , Syed Muhammad Raza Shah Naqvi , Meraj Ali Khan

The enhancement of melting performance in phase change materials (PCMs) has become a critical challenge in the development of advanced thermal energy storage systems (TESS). Efficient melting and solidification are essential for maximizing energy utilization, yet conventional PCMs often suffer from low thermal conductivity, which restricts their heat transfer rates. To overcome this limitation, structural and material modifications are widely explored. Among these, the integration of fins within storage systems has proven highly effective. In particular, T-shaped fins are advantageous because their extended surface area significantly improves heat distribution during the melting process. In addition to structural modifications, the incorporation of nanoparticles into PCMs has emerged as a practical strategy to enhance thermal conductivity. By embedding high-conductivity nanoparticles into the base PCM, the overall energy absorption, conservation, and storage capabilities are improved. This investigation examines the combined effect of fin geometry and nanoparticle addition on the melting behavior in a horizontal shell-and-tube storage system. Specifically, PCMs integrated with nanoparticles are analyzed using T-shaped and V-shaped fins, and their performance is compared with that of eight longitudinal fins at an equal fin volume fraction. Both experimental and numerical validations are conducted to confirm accuracy. Results indicate that T-shaped fins coupled with nano-enhanced PCMs accelerate melting, reduce overall melting time, and improve uniformity, independent of heat transfer fluid (HTF) temperature.

提高相变材料（PCMs）的熔化性能已成为发展先进储能系统（TESS）的关键挑战。有效的熔化和凝固对于最大限度地利用能量至关重要，但传统的pcm通常存在导热系数低的问题，这限制了它们的传热速率。为了克服这一限制，结构和材料的修改被广泛探索。其中，在存储系统内集成鳍已被证明是非常有效的。特别是，t形翅片是有利的，因为它们的扩展表面积显著改善了熔化过程中的热量分布。除了结构改变外，将纳米颗粒掺入pcm已成为提高导热性的实用策略。通过将高导电性纳米颗粒嵌入到基础PCM中，提高了整体的能量吸收、守恒和存储能力。本研究考察了翅片几何形状和纳米颗粒添加对水平管壳存储系统中熔化行为的综合影响。具体而言，采用t型和v型翅片对集成纳米颗粒的PCMs进行了分析，并将其性能与等量翅片体积分数下的8个纵翅片进行了比较。通过实验和数值验证验证了该方法的准确性。结果表明，t形翅片与纳米增强的pcm耦合加速了熔化，缩短了整体熔化时间，提高了均匀性，与传热流体（HTF）温度无关。

{"title":"Enhancing melting of nanoparticle-enriched phase change materials in thermal energy storage systems","authors":"Mohib Hussain , Faten Labassi , Hassan Waqas , Syed Muhammad Raza Shah Naqvi , Meraj Ali Khan","doi":"10.1016/j.mtsust.2025.101243","DOIUrl":"10.1016/j.mtsust.2025.101243","url":null,"abstract":"<div><div>The enhancement of melting performance in phase change materials (PCMs) has become a critical challenge in the development of advanced thermal energy storage systems (TESS). Efficient melting and solidification are essential for maximizing energy utilization, yet conventional PCMs often suffer from low thermal conductivity, which restricts their heat transfer rates. To overcome this limitation, structural and material modifications are widely explored. Among these, the integration of fins within storage systems has proven highly effective. In particular, T-shaped fins are advantageous because their extended surface area significantly improves heat distribution during the melting process. In addition to structural modifications, the incorporation of nanoparticles into PCMs has emerged as a practical strategy to enhance thermal conductivity. By embedding high-conductivity nanoparticles into the base PCM, the overall energy absorption, conservation, and storage capabilities are improved. This investigation examines the combined effect of fin geometry and nanoparticle addition on the melting behavior in a horizontal shell-and-tube storage system. Specifically, PCMs integrated with nanoparticles are analyzed using T-shaped and V-shaped fins, and their performance is compared with that of eight longitudinal fins at an equal fin volume fraction. Both experimental and numerical validations are conducted to confirm accuracy. Results indicate that T-shaped fins coupled with nano-enhanced PCMs accelerate melting, reduce overall melting time, and improve uniformity, independent of heat transfer fluid (HTF) temperature.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"32 ","pages":"Article 101243"},"PeriodicalIF":7.9,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145324728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0