Sustainable Materials and Technologies最新文献_第8页

Carbon-rich potassium poly(heptazine imide) for stoichiometric photocatalytic water reduction to hydrogen and glycerol oxidation to high-value products via a direct photocarrier redox pathway 富碳聚七嗪亚胺钾通过直接光载体氧化还原途径，用于化学计量光催化水还原成氢和甘油氧化制高价值产品

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-20 DOI: 10.1016/j.susmat.2025.e01826

Jun-Kai Yeh, Jih-Jen Wu

Carbon-rich potassium poly(heptazine imide) (CKPHI) was synthesized via a direct ionothermal method using a supramolecular complex comprising 2,4,6-triaminopyrimidine (TAP), melamine (MA), and cyanuric acid. Increasing the TAP-to-MA ratio in the precursor promotes substitution of nitrogen atoms in the π-conjugated aromatic framework with carbon atoms and partial conversion of terminal amine groups into cyano and CH moieties, thereby increasing the carbon-to‑nitrogen (C/N) ratio in the resulting CKPHIs. This structural tuning significantly influences light absorption, charge separation, and surface charge transfer behavior, leading to optimized photocatalytic performance of potassium poly(heptazine imide) for simultaneous water reduction and glycerol oxidation. Under AM 1.5G solar illumination (100 mW cm⁻²) in 10 vol% aqueous glycerol solution, Pt-loaded CKPHI achieves high yields of hydrogen (1648 μmol g⁻¹ h⁻¹), glyceraldehyde (1260 μmol g⁻¹ h⁻¹), dihydroxyacetone (390 μmol g⁻¹ h⁻¹), and cyclic diglycerol (39 μmol g⁻¹ h⁻¹), with glyceraldehyde selectivity reaching 75 %. Moreover, Pt/CKPHI enables stoichiometric hydrogen evolution and selective glycerol oxidation under anaerobic conditions via a direct photocarrier redox pathway, effectively suppressing undesirable CC bond cleavage and overoxidation to carbon dioxide by reactive oxygen species. This work highlights the critical role of structural engineering in ionic carbon nitrides for improving charge dynamics and achieving efficient charge balance in photocatalytic hydrogen generation coupled with biomass valorization.

以2,4,6-三氨基嘧啶（TAP）、三聚氰胺（MA）和三聚氰尿酸为原料，采用直接离子热法制备了富碳聚七嗪亚胺钾（CKPHI）。增加前驱体的tap - ma比，促进π共轭芳骨架中的氮原子被碳原子取代，末端胺基部分转化为氰基和CH基团，从而提高CKPHIs中的碳氮比。这种结构调整显著影响光吸收、电荷分离和表面电荷转移行为，从而优化了聚七嗪亚胺钾同时水还原和甘油氧化的光催化性能。在AM 1.5G太阳光照（100mw cm−2）下，在10 vol%的甘油水溶液中，负载pt的CKPHI获得了高收率的氢（1648 μmol g−1 h−1）、甘油醛（1260 μmol g−1 h−1）、二羟丙酮（390 μmol g−1 h−1）和环甘油（39 μmol g−1 h−1），甘油醛选择性达到75%。此外，Pt/CKPHI可以通过直接光载体氧化还原途径在厌氧条件下进行化学计量析氢和选择性甘油氧化，有效抑制不良的CC键裂解和活性氧对二氧化碳的过度氧化。这项工作强调了结构工程在离子碳氮化物中改善电荷动力学和实现光催化制氢与生物质增值的有效电荷平衡的关键作用。

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引用次数: 0

Employing diverse machine learning approaches to estimate the achievable bio-oil yield from sustainable biomass sources 采用不同的机器学习方法来估计可持续生物质资源可实现的生物油产量

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-20 DOI: 10.1016/j.susmat.2025.e01823

Mohsen Karimi , Mohammad Shirzad , Behzad Vaferi

The construction of a process to produce bio-oil from biomass pyrolysis, as well as optimizing and controlling its operation, requires accurate prediction of yield under varying process conditions and feedstock properties. The existing models often fail to capture the complex relationship between bio-oil yield and feedstock properties and operating parameters. This study applies three well-known machine learning (ML) classes, i.e., adaptive neuro-fuzzy inference systems (ANFIS), artificial neural networks, and least-squares support vector regression to predict the bio-oil yield. 419 sets of experimental measurements about the achievable bio-oil yield from 40 biomass types at a wide range of pyrolysis temperature, heating rate, residence time, and gas flow rate are used for training these intelligent models and monitoring the reliability of their simulation performance. The relevancy test approved that the gas flow rate and heating rate, with the Pearson correlation coefficients of 0.392 and − 0.202, have the highest impact on the bio-oil yield. The statistical accuracy monitoring of the ML models confirmed that the ANFIS model outperformed all alternatives, achieving the mean absolute error (MAE), root mean square error (RMSE), absolute average relative deviation (AARD), and correlation coefficient (R) of 2.18, 3.69, 6.45 %, and 0.95541, respectively. This outstanding simulation performance of the ANFIS model is related to its hybrid architecture that integrates interpretable fuzzy rules with artificial neural network adaptability. The applicability domain investigation identifies seven outliers and one out-of-leverage sample among the experimental databank.

构建生物质热解生产生物油的工艺，并对其操作进行优化和控制，需要对不同工艺条件和原料性质下的产量进行准确预测。现有的模型往往不能捕捉生物油产量与原料性质和操作参数之间的复杂关系。本研究应用了三种著名的机器学习（ML）类，即自适应神经模糊推理系统（ANFIS）、人工神经网络和最小二乘支持向量回归来预测生物油产量。通过对40种生物质在不同热解温度、加热速率、停留时间和气体流速下可实现的生物油产率的419组实验测量，对这些智能模型进行了训练，并监测其模拟性能的可靠性。相关性检验表明，气体流速和升温速率对生物油收率的影响最大，Pearson相关系数分别为0.392和- 0.202。对ML模型的统计精度监测证实，ANFIS模型优于所有替代模型，平均绝对误差（MAE）、均方根误差（RMSE）、绝对平均相对偏差（AARD）和相关系数(R)分别为2.18、3.69、6.45%和0.95541。ANFIS模型出色的仿真性能与其融合了可解释模糊规则和人工神经网络自适应性的混合体系结构有关。适用性领域调查确定了实验数据库中的7个异常值和1个非杠杆样本。

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引用次数: 0

Emerging cement-based energy harvesting and storage materials for future net-zero energy buildings and infrastructure 新兴的水泥能源收集和储存材料，用于未来的净零能源建筑和基础设施

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-13 DOI: 10.1016/j.susmat.2025.e01817

Wenkui Dong , Zhaocheng Li , Qianyun Zhang , Hengyu Guo , Yuan Chen , Dewei Chu , Wengui Li

The integration of civil infrastructure and energy technologies has accelerated the development of cement-based energy materials, endowing traditional infrastructure with energy harvesting, storage, and thermal regulation capabilities. As cities face increasing energy demands and pressures to enhance climate resilience, cement-based energy materials offer a scalable and decentralized pathway for embedding energy functions directly into concrete-dominated infrastructure. This review provides a critical overview of recent advances across six emerging categories of cement-based energy materials, including thermoelectric cementitious materials (TECs), piezoelectric cementitious materials (PECs), cement-based triboelectric nanogenerators (CBTENGs), cement-based batteries (CBBs), cement-based supercapacitors (CBSs), and thermal storage concrete (TSC) incorporating phase change materials (PCMs). Each category is examined in terms of fundamental mechanisms, material formulations, manufacturing processes, performance, and representative applications. Key challenges including mechanical-functional trade-offs, environmental durability, performance standardization, and scalability are evaluated, and potential integration strategies are proposed. Future research directions are outlined, emphasizing multifunctional integration, long-term durability, scalable fabrication, and the development of standardized testing protocols to accelerate real-world deployment. By synthesising insights from construction materials, structural engineering, and energy harvesting and storage systems, this review underscores the transformative potential of cement-based energy materials in advancing smart, self-powering, and sustainable infrastructure aligned with global net-zero targets.

民用基础设施与能源技术的融合加速了水泥基能源材料的发展，使传统基础设施具备了能量收集、储存和热调节能力。随着城市面临日益增长的能源需求和增强气候适应能力的压力，水泥基能源材料为将能源功能直接嵌入混凝土主导的基础设施提供了一种可扩展和分散的途径。本文综述了六种新兴水泥基能源材料的最新进展，包括热电胶凝材料（tec）、压电胶凝材料（PECs）、水泥基摩擦电纳米发电机（CBTENGs）、水泥基电池（CBBs）、水泥基超级电容器（CBSs）和结合相变材料（PCMs）的储热混凝土（TSC）。每个类别都在基本机制，材料配方，制造工艺，性能和代表性应用方面进行了检查。关键挑战包括机械功能的权衡、环境耐久性、性能标准化和可扩展性进行了评估，并提出了潜在的集成策略。概述了未来的研究方向，强调多功能集成、长期耐用性、可扩展制造和标准化测试协议的发展，以加速现实世界的部署。通过综合建筑材料、结构工程和能源收集和储存系统的见解，本综述强调了水泥基能源材料在推进智能、自供电和可持续基础设施方面的变革潜力，与全球净零目标保持一致。

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引用次数: 0

Ionic liquid–cellulose acetate composites as humidity sensors for agriculture 4.0 and related technologies 离子液体-醋酸纤维素复合材料在农业4.0及相关技术中的湿度传感器

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-15 DOI: 10.1016/j.susmat.2025.e01818

B.D.D. Cruz , A.S. Castro , N. Pereira , C.R. Tubio , M. Tariq , J.M.S.S. Esperança , P.M. Martins , S. Lanceros-Méndez , D.M. Correia

Humidity monitoring assessment is vital across fields such as agriculture, food processing, environmental monitoring, and healthcare, particularly within the framework of Agriculture 4.0, where smart sensing technologies enable efficient resource management and crop optimization. In this work, a sustainable cellulose acetate (CA)-based humidity sensor incorporating the ionic liquid (IL) bis(1-butyl-3-methylimidazolium) tetrachlorocobaltate (II) ([Bmim]₂[CoCl₄]) was developed and assessed.

This study explores the incorporation of different contents (0–40 % wt.) of the IL into a CA matrix to obtain a hydrochromic and electrically responsive composite for humidity sensing. The CA/IL composite presents a blue colour at room temperature, but when immersed in water, it changes to transparent. The incorporation of IL increases porosity and wettability, enhancing the electrical selectivity of the material. Higher performance was achieved for the CA/[Bmim]₂[CoCl₄] blend with 20 wt% IL which enabled reliable relative humidity sensing in the 50–90 % RH range. This response was demonstrated through impedance-based measurements (−33 kΩ/%RH at 10 kHz) and distinct hidrochromic variations, allowing effective soil moisture monitoring across 20–90 % RH.

This optimized formulation demonstrates strong potential for practical humidity monitoring applications, particularly in soil moisture sensing for sustainable agriculture. The findings highlight a natural-based material with improved sensitivity and dual-modality readout, supporting the development of environmentally friendly smart sensors.

湿度监测评估在农业、食品加工、环境监测和医疗保健等领域至关重要，特别是在农业4.0的框架内，智能传感技术可以实现高效的资源管理和作物优化。在这项工作中，采用离子液体（IL）（1-丁基-3-甲基咪唑）四氯钴酸盐（II）（[Bmim] 2 [CoCl₄]）开发并评估了一种可持续的醋酸纤维素（CA）基湿度传感器。本研究探讨了将不同含量（0 - 40% wt.）的IL掺入CA矩阵中，以获得用于湿度传感的水致变色和电响应复合材料。CA/IL复合材料在室温下呈蓝色，但浸入水中后变为透明。IL的加入增加了孔隙度和润湿性，增强了材料的电选择性。CA/[Bmim] 2 [CoCl₄]混合物在20 wt%的IL下实现了更高的性能，在50 - 90%的RH范围内实现了可靠的相对湿度传感。这种响应通过基于阻抗的测量（−33 kΩ/%RH, 10 kHz）和不同的汗色变化来证明，允许在20 - 90% RH范围内有效监测土壤湿度。这种优化的配方显示了实际湿度监测应用的强大潜力，特别是在可持续农业的土壤湿度传感方面。研究结果强调了一种天然材料，具有更高的灵敏度和双模态读数，支持环保智能传感器的发展。

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引用次数: 0

Relative life cycle assessment of mortar mixes incorporating industrial by-products flue gas desulfurization gypsum and fly ash via cradle-to-gate approach 工业副产物、烟气、脱硫、石膏和粉煤灰混合砂浆的相对生命周期评价

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2026-01-20 DOI: 10.1016/j.susmat.2026.e01870

Payal Bakshi , Soumitra Maiti , Aakriti , Neeraj Jain

A relative life cycle assessment (LCA) is conducted for mortar mixes formulated by including flue gas desulfurization (FGD) gypsum, fly ash and ordinary Portland cement (OPC) as binding agents using cradle-to-gate approach by scaling up laboratory size life cycle inventory. Construction is a crucial sector for the sustainable development of Asian countries, as it is increasingly required to transition towards the use of novel ecological mortars. The construction industry is characterised by a significant use of energy and the manufacturing of cement is a major contributor to global environmental pollution. By-products generated by coal fired power plants show potential as a sustainable substitute for cement in mortar. LCA is utilised to measure the potential environmental effects on various indicators including acidification, climate change-global warming potential, ecotoxicity (freshwater, marine, terrestrial), energy resources: non-renewable-abiotic depletion potential: fossil fuels, eutrophication, human toxicity, material resources: metals/minerals-abiotic depletion potential: elements (ultimate reserves), ozone layer depletion and photochemical oxidation of developed mortars. FGD gypsum-Fly ash-Cement (FFC) mortar performs better than Cement mortar (C) in all evaluated environmental impacts. Relative LCA study of sustainable FFC and C mortar mix production was performed using the ecoinvent - CML v4.8 2016 method. Global warming potential of the developed FFC mortar is found to be −3.75972e-1Kg CO₂-Eq. Primary areas of concern are the transportation infrastructure and the usage of fossil fuels in the production of FGD gypsum, fly ash and cement. Substituting natural gas for non-renewable mineral coke will result in a decrease in the overall environmental impacts. Based on the conducted LCA, it has been determined that all the environmental indicators of FFC mortar are considerably lower than those of cement mortar with similar strength. Utilising sustainable FFC mortar will substantially decrease the extraction of non-renewable resources, resulting in a decrease in environmental impacts.

通过扩大实验室规模的生命周期清单，采用从摇篮到大门的方法，对包括烟气脱硫（FGD）石膏、粉煤灰和普通波特兰水泥（OPC）作为粘结剂的砂浆混合物进行了相对生命周期评估（LCA）。建筑是亚洲国家可持续发展的一个关键部门，因为它越来越需要过渡到使用新型生态砂浆。建筑工业的特点是大量使用能源，而水泥的制造是造成全球环境污染的主要因素。燃煤电厂产生的副产品显示出作为砂浆中水泥的可持续替代品的潜力。LCA用于测量对各种指标的潜在环境影响，包括酸化，气候变化-全球变暖潜势，生态毒性（淡水，海洋，陆地），能源：不可再生-非生物枯竭潜势：化石燃料，富营养化，人类毒性，物质资源：金属/矿物-非生物枯竭潜势：元素（最终储量），臭氧层消耗和发达砂浆的光化学氧化。烟气脱硫石膏-粉煤灰-水泥砂浆（FFC）在各项环境影响评价中均优于水泥砂浆(C)。使用ecoinvent - CML v4.8 2016方法进行可持续FFC和C砂浆混合生产的相关LCA研究。开发的FFC砂浆的全球变暖潜势为−3.75972e-1Kg CO2-Eq。主要关注的领域是运输基础设施和在生产烟气脱硫石膏、粉煤灰和水泥时使用化石燃料。用天然气替代不可再生的矿物焦炭将减少对整体环境的影响。通过进行LCA，确定FFC砂浆的各项环境指标均明显低于同等强度的水泥砂浆。使用可持续的FFC砂浆将大大减少对不可再生资源的开采，从而减少对环境的影响。

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引用次数: 0

Low-temperature direct reduction of secondary antimony oxide via biomass residue 生物质渣低温直接还原二次氧化锑的研究

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2026-02-07 DOI: 10.1016/j.susmat.2026.e01914

Zhe Gao , Biao Liang , Xiangfeng Kong , Bin Yang , Feng Zhu , Dachun Liu , Baozhong Ma , Shaoxiong Li , Hongwei Yang , Jia Yang

Antimony oxide, an important secondary resource, is traditionally recovered through energy-intensive and emission-intensive carbothermal reduction route. A low-carbon strategy of biomass residue low-temperature direct reduction (BDR) was proposed. TG-FTIR-GCMS demonstrated that the representative biomass residue of Cunninghamia Lanceolata scrap (CLS) are subjected to non‑oxygen pyrolysis (441–794 K), resulting in the directed production of new-type reductive species (CO, CH₄, H₂, C₂H₄) and biochar. XRD and SEM revealed that C₂H₄, CH₄, H₂, CO and biochar had sequentially or alternately reduced secondary antimony oxide (SAO) under variable temperature conditions, producing micrometer spherical metallic antimony. XRD quantitative analysis confirmed that the reduction product consisted of 90.91 wt% Sb and 9.09 wt% Sb₂O₃, with a reduction efficiency reaching 92.36% under 923 K. Relative to conventional carbothermal reduction, multiple indicators showed significant improvement, with the reaction temperature reduced by 400 K and the process cycle shortened by 3 days. These results highlight the innovative integration of biomass residue pyrolysis with sustainable reduction of SAO, providing a generalized approach for the reduction of non-ferrous metal oxides.

氧化锑是一种重要的二次资源，传统上通过能源密集型和排放密集型的碳热还原途径回收。提出了生物质渣低温直接还原（BDR）低碳策略。TG-FTIR-GCMS表明，杉木废弃物（CLS）的代表性生物质残渣进行了441 ~ 794 K的非氧热解，定向生成了新型还原性物质（CO、CH4、H2、C2H4）和生物炭。XRD和SEM结果表明，C2H4、CH4、H2、CO和生物炭在变温条件下依次或交替还原次生氧化锑（SAO），生成微米级球形金属锑。XRD定量分析证实，还原产物Sb为90.91 wt%， Sb2O3为9.09 wt%，在923 K下还原效率达到92.36%。与常规碳热还原相比，多项指标均有明显改善，反应温度降低了400 K，工艺周期缩短了3天。这些结果突出了生物质残渣热解与SAO可持续还原的创新整合，为还原有色金属氧化物提供了一种通用方法。

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引用次数: 0

Sustainable recycling of unnoticed firecracker waste into fluorescence carbon dots for multimodal applications 可持续回收利用未被注意到的爆竹废物，使其成为荧光碳点，用于多种模式应用

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-11-21 DOI: 10.1016/j.susmat.2025.e01772

Arun Annamalai, Ramya Ravichandran, Kumaresan Annamalai, Anandhavalli Jeevarathinam, Sundaravadivel Elumalai

The world suffers from various types of pollution, especially environmental pollution, mainly caused by dumping waste materials into the environment. It is well known that firecrackers are burnt during festivals or any other celebration, and their waste still exists in our environment and affects our ecosystem. In this work, we have sustainably recycled one of the primarily unnoticed environmental pollutants, firecracker waste, into blue colour emitting BCDs via a cost and environment-friendly hydrothermal process. BCDs are fluorescent probes that detect toxic water pollutants such as Mn²⁺ and Co²⁺ in an aqueous environment with 64 and 62 nM LOD. Then, fluorescent ink was also prepared for secured information transfer and anticounterfeiting-based security applications with 30 days of visual stability. Apart from the environment and security, we have investigated the electrochemical properties of the prepared BCDs to explore their supercapacitive charge storage character. The electrodes had a small size, well-functionalized surface structure, and hydrophilic character, resulting in 65 F/g capacitance at 0.5 A/g. This piece of work reports the recycling of waste pollutants and paves the way to develop alternative strategies to safeguard the environment from water pollutants by utilizing the same waste pollutants.

世界遭受着各种各样的污染，尤其是环境污染，主要是由于向环境中倾倒废物造成的。众所周知，鞭炮是在节日或其他庆祝活动中燃烧的，它们的废物仍然存在于我们的环境中，影响着我们的生态系统。在这项工作中，我们通过成本低且环保的水热工艺，可持续地回收了一种主要不被注意的环境污染物——鞭炮废料，将其转化为蓝色的bcd。bcd是荧光探针，可在64 nM和62 nM LOD的水环境中检测有毒水污染物，如Mn2+和Co2+。然后，制备了荧光油墨，用于安全信息传输和防伪的安全应用，具有30天的视觉稳定性。除了环境和安全性外，我们还研究了制备的bcd的电化学性能，以探索其超电容电荷存储特性。电极体积小，表面结构功能化良好，具有亲水性，在0.5 a /g时电容可达65 F/g。这项工作报告了废物污染物的回收利用，并为开发替代策略铺平了道路，通过利用相同的废物污染物来保护环境免受水污染物的侵害。

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引用次数: 0

Resource utilization of construction waste in soft ground treatment by microbial-induced carbonate precipitation technology 微生物诱导碳酸盐沉淀技术处理软土地基中建筑垃圾的资源化利用

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-11-25 DOI: 10.1016/j.susmat.2025.e01788

Deluan Feng, Zixin Lin, Yanzhe Gu, Shihua Liang

The construction waste has exceeded 2 billion tons in China in 2021, and the large amount and wide sources of construction waste raises severe environmental issues but showcases desirable resource utilization potentials. Microbial-induced carbonate precipitation (MICP) was used to replace cement to modify the microscopic damage of construction waste, improve its mechanical performance and expand its engineering application prospects. In order to investigate the influence of the concentration of bacterial and cementation solution as well as the activity of bacterial solution on the curing effect of construction waste and the bearing capacity of microbial construction waste piles in soft soil stratum, unconfined compressive strength (UCS), scanning electron microscopy/ energy disperse spectroscopy (SEM/EDS) and low field nuclear magnetic resonance (LF/NMR) tests were conducted to study the curing effect and strengthening mechanism of MICP on construction waste and river sand. Moreover, physical model test was conducted to analyze the bearing capacity of pile and composite foundation of microbial construction waste and river sand piles. The results show that: MICP technology can effectively repair the microscopic damage of construction waste particles. The recommended bacterial and cementation solution concentration for MICP solidified construction waste is OD600 = 1.0 and 1.0 mol/L, respectively. The microbial construction waste pile prepared at this recommended concentration has good integrity and high unconfined compressive strength. The bearing capacity of microbial construction waste and river sand piles is 1.20 kN. The friction resistance of these piles increases rapidly with an increase in pile depth, after reaching the middle position of the pile, and then decreases gradually. Microbial construction waste and river sand piles increase the bearing capacity of soft soil foundations by approximately 50 %. Construction waste is expected to play the part of an excellent substitute for natural river sand, and then realize its resource utilization in geotechnical engineering.

2021年，中国建筑垃圾总量已超过20亿吨，建筑垃圾总量大、来源广，环境问题严重，但资源利用潜力巨大。利用微生物诱导碳酸盐沉淀（MICP）代替水泥改性建筑垃圾的微观损伤，提高其力学性能，扩大其工程应用前景。为了研究细菌和胶结液浓度以及细菌溶液活性对软土地层中建筑垃圾养护效果和微生物建筑垃圾桩承载力的影响，采用无侧限抗压强度（UCS）通过扫描电镜/能谱（SEM/EDS）和低场核磁共振（LF/NMR）试验，研究了MICP对建筑垃圾和河砂的固化效果及强化机理。通过物理模型试验，分析了微生物建筑垃圾桩与河砂桩复合地基的承载力。结果表明：MICP技术可以有效修复建筑垃圾颗粒的微观损伤。MICP固化建筑垃圾的推荐细菌和胶结液浓度分别为OD600 = 1.0和1.0 mol/L。在此推荐浓度下制备的微生物建筑垃圾桩具有良好的整体性和较高的无侧限抗压强度。微生物建筑垃圾和河砂桩的承载力为1.20 kN。这些桩的摩阻力随着桩深的增加迅速增大，到达桩中位置后，摩阻力逐渐减小。微生物建筑垃圾和河砂桩使软土地基承载力提高约50%。建筑垃圾有望成为天然河砂的优良替代品，实现其在岩土工程中的资源化利用。

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引用次数: 0

Microwave-driven B/Al dual-doped CuO: A bifunctional material for hybrid supercapacitors and hydrogen/oxygen evolution reactions 微波驱动B/Al双掺杂CuO：用于混合超级电容器和氢/氧析出反应的双功能材料

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2025-12-25 DOI: 10.1016/j.susmat.2025.e01836

Thanapat Jorn-am , Nichaphat Thongsai , Tanagorn Sangtawesin , Insik In , Peerasak Paoprasert

Developing efficient and low-cost materials for versatile energy storage and conversion applications remains a crucial challenge. In this work, boron (B) and aluminum (Al) co-doped copper oxide (CuO) nanostructures were successfully synthesized via a rapid microwave-assisted method. This simple and energy-efficient approach produced homogeneous, defect-rich CuO with tunable electronic and structural properties. The synergistic effects of B and Al co-doping effectively modulated the crystal structure and charge-transfer behavior, leading to improved electrochemical and catalytic performance. The optimized co-doped CuO electrode exhibited a high specific capacitance and diffusion-controlled charge storage. The assembled hybrid supercapacitor delivered an areal energy density of 151.9 μWh cm⁻² at 700 μW cm⁻², with 89.5 % capacitance retention and 97.0 % Coulombic efficiency after 10,000 cycles. As a bifunctional electrocatalyst, the same material showed low overpotentials of 129.5 mV (HER) and 327.2 mV (OER) vs. RHE, along with small Tafel slopes of 170.3 and 68.5 mV dec⁻¹, respectively. These findings highlight the potential of B- and Al-co-doped CuO as a promising candidate for next-generation, high-performance, and cost-effective energy storage and conversion systems.

为多功能能量存储和转换应用开发高效、低成本的材料仍然是一个关键的挑战。本研究成功地利用微波辅助快速合成了硼(B)和铝（Al）共掺杂氧化铜（CuO）纳米结构。这种简单而节能的方法产生了具有可调谐电子和结构特性的均匀，富含缺陷的CuO。B和Al共掺杂的协同效应有效地调节了晶体结构和电荷转移行为，从而提高了电化学和催化性能。优化后的共掺杂CuO电极具有高比电容和扩散控制电荷存储性能。该复合超级电容器在700 μW cm−2下的面能密度为151.9 μWh cm−2，循环10000次后电容保持率为89.5%，库仑效率为97.0%。作为双功能电催化剂，该材料相对于RHE表现出较低的过电位，分别为129.5 mV （HER）和327.2 mV (OER)， Tafel斜率分别为170.3和68.5 mV dec−1。这些发现突出了B-和al共掺杂CuO作为下一代高性能、经济高效的储能和转换系统的潜在候选材料的潜力。

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引用次数: 0

A sustainable strategy of plant-derived nanozyme and polysaccharide microneedles for multifunctional therapy of infected wounds 植物源性纳米酶和多糖微针用于感染性伤口多功能治疗的可持续策略

IF 9.2 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies

Pub Date : 2026-04-15 Epub Date: 2026-01-27 DOI: 10.1016/j.susmat.2026.e01893

Peiyuan Li , Wenlin Zhou , Qing Guo , Siyan Liang , Chumei Liang , Wei Su

The development of multifunctional wound dressings from sustainable resources is critical to advancing green biomedical materials for effective wound repair. In this study, we present an eco-friendly microneedle delivery platform (LutCe-QCS-GP MN) with integrated reactive oxygen scavenging and antibacterial functions. The system features a sustainable nanozyme (LutCe), formed by self-assembly of the plant-derived flavonoid luteolin and cerium ions, which exhibits robust superoxide dismutase-like activity. These LutCe nanozymes organic-inorganic hybrids were synthesized through a green assembly process and demonstrate potent scavenging capability against superoxide anions, hydroxyl radicals, and reactive nitrogen species. Incorporated into the tips of the microneedles, they directly alleviate oxidative stress at the wound site. Simultaneously, an antimicrobial polysaccharide-based matrix provides effective defense against wound pathogens, preventing infection and secondary tissue damage. By synergistically combining sustainable antioxidant nanozymes with natural antibacterial components, the LutCe-QCS-GP MN system significantly reduced oxidative stress and bacterial load in wounds, markedly accelerating the healing process. Comprehensive in vitro and in vivo safety evaluations support the biosafety of the platform, underscoring its potential for clinical translation. This work not only introduces a promising therapeutic strategy for wound management but also highlights the valorization of natural, sustainable resources in functional material design, offering a meaningful reference for green technology applications in biomedicine.

利用可持续资源开发多功能创面敷料是推进绿色生物医用材料有效修复创面的关键。在这项研究中，我们提出了一个集活性氧清除和抗菌功能于一体的生态友好型微针输送平台（LutCe-QCS-GP MN）。该系统具有可持续的纳米酶（LutCe），由植物来源的黄酮类木犀草素和铈离子自组装形成，具有强大的超氧化物歧化酶样活性。这些LutCe纳米酶是通过绿色组装工艺合成的，具有清除超氧阴离子、羟基自由基和活性氮的能力。在微针的尖端，它们直接减轻了伤口部位的氧化应激。同时，基于抗菌多糖的基质可有效防御伤口病原体，防止感染和继发性组织损伤。通过将可持续抗氧化纳米酶与天然抗菌成分协同结合，luce - qcs - gp MN系统显著降低了伤口的氧化应激和细菌负荷，显著加快了愈合过程。全面的体外和体内安全性评估支持该平台的生物安全性，强调其临床转化的潜力。本研究不仅介绍了一种有前景的伤口治疗策略，而且强调了功能材料设计中自然、可持续资源的价值，为绿色技术在生物医学中的应用提供了有意义的参考。

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引用次数: 0