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Multipurpose Fluorescent Nanocarriers: Environmental Behavior, Toxicity and Internalization on Marine Microalgae
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-29 DOI: 10.1002/adsu.202400378
Bruno G. Campos, Olga Kaczerewska, Jacinta M. M. Oliveira, Joana Figueiredo, Frederico Maia, João Tedim, Isabel Sousa, Denis M. S. Abessa, Susana Loureiro, Roberto Martins

Engineered nanomaterials (ENMs), such as silica mesoporous nanocapsules (SiNC), have emerged as a powerful tool for the controlled delivery and release of active compounds in various fields. However, the environmental impact of SiNC on marine biota, particularly when they enter the marine environment through wastewater effluents or direct release from maritime coatings, remains poorly understood. Studying their effects is thus crucial for environmental and human health protection, the development of safe-by-design ENMs, and informed policy-making. This study aims to assess the ecotoxicological effects and internalization of industrially-relevant SiNC in marine phytoplankton, namely on the microalgae Tetraselmis chuii, Nannochloropsis gaditana, and Isochrysis galbana, and diatoms Phaeodactylum tricornutum, and Chaetoceros calcitrans. For this purpose, a fluorescent nanocarrier (SiNC-UMB) is developed by labeling the SiNC with the fluorescent natural dye umbelliferone (UMB). UV–vis and fluorescence spectroscopic analyses confirmed the successful loading of UMB into SiNC. Phytoplankton can internalize these ENMs, even at low concentrations, although adsorption to the cell wall can also occur. This confirms the internal exposure and growth inhibition observed in the microalgae. These findings highlight the potential of using SiNC-UMB as a valuable tool for tracking their uptake and assessing their effects on marine biota and beyond.

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引用次数: 0
Tailoring of Polypyrrole Wrapped Cotton Fiber Sponge for Simultaneous Solar Steam and Solar Thermoelectric Generation
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-29 DOI: 10.1002/adsu.202400618
Tingjie Chen, Yuhan Tang, Na Song, Zhaoxing Lin, Lihong Xu, Xiangfang Peng, Xin Chen, Minghui He

Solar steam generation (SSG) using floatable evaporators to absorb solar energy and generate heat at the water–air interface has attracted increasing interest in achieving water purification and desalination. Using biodegradable and porous biomass materials as evaporators to fabricate high-performance SSG devices is a promising route, but the poor efficiency and fussy and energy-intensive manufacturing process for biomass material-based evaporators will restrict their practical application. Here, an old commercial cotton quilt is used to prepare porous cotton fiber sponges (CFS) via a simple and scalable mechanical foaming strategy. After being decorated by the polypyrrole (PPy), the CFS@PPy sponge with a hierarchical porous structure shows broadband light absorption capacity, good hydrophilicity, and excellent photothermal capacity. The obtained sponge can be directly used as an evaporator floating on the seawater and shows a high steam-generation efficiency of 85.07% under 1 sun irradiation. Additionally, it can be used as a photothermal material to construct a solar thermoelectric generation (STG) device and achieve an enhanced open-circuit voltage (Vout) of 0.4 V and output current (Iout) of ≈59.6 mA under 5 sun irradiations. With the help of a boost converter, the power generation from the STG device can continuously charge the electric bulb and wristband.

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引用次数: 0
Metal Centers Drive Selectivity of Electrocatalytic Oxygen Reduction Reaction Promoted by Tetrapyrazinoporphyrazine Complexes
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-27 DOI: 10.1002/adsu.202400373
Fabrizio Sordello, Emanuele Azzi, Francesco Pellegrino, Annamaria Deagostino, Polyssena Renzi

Fuel cells represent a promising technology for the future decarbonization of the mobility sector. However, the efficient use of H2 and O2 to produce electricity still requires noble metal catalysts such as platinum and ruthenium. In particular, the Oxygen Reduction Reaction (ORR) is complex and limiting due to its mechanism, which involves the transfer of four electrons and four protons to produce water. The search for alternative catalysts exhibiting high selectivity is progressing at a rapid pace. In this context, this group previously unveiled a homogeneous catalyst based on titanium-centered tetrapyrazinoporphyrazines (TPyzPz) for the ORR, noting a certain modularity in the selectivity toward either a two- or four-electron reduction reaction. In this study, the influence of different metal centers (magnesium (Mg), cobalt (Co), copper (Cu), and zinc (Zn)) and various substituents is investigated on the tetrapyrazinoporphyrazine ring. The findings indicate a strong dependence of activity and selectivity on these modifications. Notably, cobalt and copper catalysts exhibit a selectivity greater than 90% toward H2O production in the ORR. However, alterations to the macrocycle structure significantly affected the reactivity of these catalysts. These new insights highlighted the importance of careful structural design in the development of the next generation of ORR catalysts.

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引用次数: 0
Advancing Photocatalysis: Insights from 2D Materials and Operational Parameters for Organic Pollutants Removal 推进光催化:从二维材料和有机污染物去除操作参数的见解
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-27 DOI: 10.1002/adsu.202400483
Bachir Yaou Balarabe, Timur Sh. Atabaev

Photocatalysis plays a crucial role in tackling environmental challenges by efficiently breaking down organic pollutants in water. This study highlights the significant contribution of 2D materials in advancing photocatalytic technology for sustainable environmental remediation. It explores various aspects of photocatalytic processes, including important performance metrics such as reaction rate, quantum yield, space yield, energy consumption, and figure of merit. The main focus is on 2D materials-based structures, such as metal oxide supported on graphene and graphene oxides, MXene, or MoS2 (referred as 2D-MO NPs), as well as more complex nanocomposite configurations (referred as 2D-MO NCs). Furthermore, the research examines the complex interaction between compositional and operational factors that influence photocatalytic activity, as well as different photocatalytic mechanisms and active species. Finally, it addresses the current limitations of photocatalytic organic pollutants degradation for field applications and discusses the prospects of this technology.

光催化通过有效地分解水中的有机污染物,在解决环境挑战方面发挥着至关重要的作用。这项研究强调了二维材料在推进可持续环境修复光催化技术方面的重要贡献。它探讨了光催化过程的各个方面,包括重要的性能指标,如反应速率、量子产率、空间产率、能耗和优值。主要关注的是基于二维材料的结构,如支撑在石墨烯和石墨烯氧化物上的金属氧化物、MXene或MoS2(称为2D- mo NPs),以及更复杂的纳米复合材料结构(称为2D- mo NCs)。此外,该研究还探讨了影响光催化活性的成分和操作因素之间的复杂相互作用,以及不同的光催化机制和活性物质。最后,指出了目前光催化有机污染物降解在现场应用中的局限性,并讨论了该技术的前景。
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引用次数: 0
Enhanced Machine Condition Monitoring Based on Triboelectric Nanogenerator (TENG): A Review of Recent Advancements 基于摩擦电纳米发电机(TENG)的增强机器状态监测研究进展综述
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-26 DOI: 10.1002/adsu.202400575
Idiris Mehamud, Marcus Björling, Pär Marklund, Rong An, Yijun Shi

Intelligent machine condition monitoring is desirable to enable Industry 4.0 and 5.0 to create sustainable products and services via the integration of automation, data exchange, and human–machine interface. In the past decades, huge progress has been achieved in establishing sustainable machine condition monitoring systems via various sensing technologies. Yet, the dependence on external power sources or batteries for sensing and data communication remains a challenge. In addition, energy harvesting and sensing are dynamically growing research fields introducing various working mechanisms and designs for improved performance, flexibility, and integrability. Recently, triboelectric nanogenerators (TENG) have been applied as a new technology for energy harvesting and sensing to monitor machine performance. This manuscript presents the potential application of TENG for self-powered sensors and energy harvesting technology for machine condition monitoring, where the developmental aspects of TENG-based devices including the robustness of design and device integration to machine elements are reviewed. For better comparison, the performance of various reported devices is summarized. Simultaneously, the advanced results achieved in employing TENGs for various condition analysis techniques and self-powered wireless communication for machine condition monitoring are discussed. Finally, the challenges, and key strategies for utilizing TENGs for machine condition monitoring in the future, are presented.

智能机器状态监测是工业4.0和工业5.0通过集成自动化、数据交换和人机界面来创造可持续产品和服务的理想选择。在过去的几十年里,通过各种传感技术建立可持续的机器状态监测系统取得了巨大的进展。然而,依赖外部电源或电池进行传感和数据通信仍然是一个挑战。此外,能量收集和传感是动态发展的研究领域,引入了各种工作机制和设计,以提高性能,灵活性和可集成性。近年来,摩擦电纳米发电机(TENG)作为一种新的能量收集和传感技术被应用于机器性能的监测。本文介绍了TENG在机器状态监测中的自供电传感器和能量收集技术的潜在应用,其中回顾了基于TENG的设备的发展方面,包括设计的鲁棒性和设备与机器元件的集成。为了更好地进行比较,本文总结了所报道的各种设备的性能。同时,讨论了利用teng进行各种状态分析技术和自供电无线通信进行机器状态监测所取得的先进成果。最后,提出了未来利用TENGs进行机器状态监测的挑战和关键策略。
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引用次数: 0
Simultaneous Triboelectric and Mechanoluminescence Sensing Toward Self-Powered Applications 摩擦电和机械发光同步传感的自供电应用
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-25 DOI: 10.1002/adsu.202400609
Sugato Hajra, Swati Panda, Seongkyu Song, Heewon Song, Basanta Kumar Panigrahi, Soon Moon Jeong, Yogendra Kumar Mishra, Hoe Joon Kim

Simultaneous phenomena of triboelectricity and mechanoluminescence (ML) acquire vital insights into the mechanics of charge separation and recombination, as well as the relationship between mechanical stress and light emission. In the present work, polydimethylsiloxane (PDMS) and ZnS:Cu particle-based composites are fabricated, which have good ML characteristics and can generate electricity via contact electrification. ML, in conjunction with a triboelectric nanogenerator (TENG), contributes by producing power from mechanical operations while also giving vital visual input in the form of light emission. This dual capability improves user awareness and efficiency in a variety of applications, making mechanical systems and wearable devices easier to monitor and optimize. To accomplish this, a single-electrode mode silver (Ag) nanowires embedded PDMS-ZnS: Cu-based TENG device is developed and achieved an electrical output of 60 V, 395 nA, and 15 nC by using a linear motor. Furthermore, the combined ML and TENG device is employed in various cases of safety monitoring. This integration provides self-powered devices that detect mechanical stress, delivering real-time warnings and illumination signals for increased safety and communication in demanding conditions such as SOS signaling, underwater driving, deep mining, and sports.

摩擦电和机械发光(ML)的同时现象对电荷分离和重组的机制以及机械应力与发光之间的关系具有重要的意义。本文制备了聚二甲基硅氧烷(PDMS)和ZnS:Cu颗粒基复合材料,该复合材料具有良好的ML特性,并能通过接触通电产生电能。ML与摩擦电纳米发电机(TENG)结合在一起,通过机械操作产生能量,同时还以发光的形式提供重要的视觉输入。这种双重功能提高了各种应用中的用户意识和效率,使机械系统和可穿戴设备更容易监控和优化。为了实现这一目标,开发了单电极模式银(Ag)纳米线嵌入PDMS-ZnS: cu基TENG器件,并通过使用线性电机实现了60 V, 395 nA和15 nC的电输出。此外,将ML和TENG组合装置用于各种安全监测情况。这种集成提供了自供电设备,可以检测机械应力,提供实时警告和照明信号,以提高SOS信号,水下驾驶,深部采矿和体育等苛刻条件下的安全性和通信。
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引用次数: 0
Masthead: (Adv. Sustainable Syst. 9/2024) 刊头:(Adv. Sustainable Syst.)
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-24 DOI: 10.1002/adsu.202470033
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引用次数: 0
Visible Light-Driven Synthesis of PtCu Alloy Nanodendrites for Electrocatalytic Nitrogen-Conversion Reactions (Adv. Sustainable Syst. 9/2024) 用于电催化氮转化反应的铂铜合金纳米树枝状化合物的可见光驱动合成(Adv. Sustainable Syst.)
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-24 DOI: 10.1002/adsu.202470034
Guoqiang Wang, Chuanjun Wang, Xin Zhao, Shenjie Liu, Geoffrey I. N. Waterhouse, Yining Zhang, Xiaoqing Lv, Chenyang Wang, Xiaojun Lv, Jing Xu

PtCu Alloy Nanodendrites

In article number 2400272, Geoffrey I. N. Waterhouse, Jing Xu, and co-workers present an aqueous visible-light-driven system with fluorescein as the exited state photosensitizer, which upon light irradiation reduces Pt4+ and Cu2+ salts to generate PtCu alloy nanodendrites, resulting in in situ catalyzing hydrogen production. The PtCu alloy nanodendrites are collected in pure and used as the electrocatalyst, which exhibits impressive bifunctional electrocatalytic activity for nitrogen oxidation to nitrate and nitrite/nitrate reduction to ammonia.

PtCu 合金纳米树突在编号为 2400272 的文章中,Geoffrey I. N. Waterhouse、Jing Xu 及其合作者介绍了一种以荧光素为出射态光敏剂的水溶液可见光驱动系统,该系统在光照射下还原 Pt4+ 和 Cu2+ 盐生成 PtCu 合金纳米树突,从而原位催化制氢。收集纯净的 PtCu 合金纳米枝晶并将其用作电催化剂,该催化剂在氮氧化成硝酸盐和亚硝酸盐/硝酸盐还原成氨的过程中表现出令人印象深刻的双功能电催化活性。
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引用次数: 0
Advancing Sustainable Building Materials: Reducing Formaldehyde Emissions in Medium Density Fiber Boards with Lignin Nanoparticles (Adv. Sustainable Syst. 9/2024) 推进可持续建筑材料:利用木质素纳米颗粒降低中密度纤维板的甲醛释放量(Adv. Sustainable Syst.)
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-24 DOI: 10.1002/adsu.202470032
Ali Dorieh, Farideh Pahlavan, Kateřina Hájková, Štěpán Hýsek, Mohammad Farajollah Pour, Elham H. Fini

Lignin Nanoparticles

In article number 2400102, using demethylated lignin nanoparticles as formaldehyde scavengers in urea-formaldehyde (UF) resins, Ali Dorieh, Elham H. Fini, and co-workers produce a green MDF with minimal formaldehyde emissions. Increasing concentrations of these nanoparticles in the UF adhesive significantly reduces formaldehyde emissions and thickness swelling of MDF composites. Importantly, this reduction does not compromise the physical-mechanical properties, which remain comparable to boards bonded with unmodified UF.

木质素纳米颗粒在文章编号 2400102 中,Ali Dorieh、Elham H. Fini 及其合作者使用脱甲基木质素纳米颗粒作为脲醛(UF)树脂中的甲醛清除剂,生产出了一种甲醛释放量极低的绿色中密度纤维板。提高这些纳米颗粒在 UF 粘合剂中的浓度可显著减少甲醛释放量和中密度纤维板复合材料的厚度膨胀。重要的是,这种降低并不会影响物理机械性能,其性能仍可与未改性 UF 粘合的板材相媲美。
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引用次数: 0
Self-Powered Biological UV Photodetector Based on Live Freshwater Green Algae 基于活淡水绿藻的自供电生物紫外光电探测器
IF 6.5 3区 材料科学 Q2 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Pub Date : 2024-09-24 DOI: 10.1002/adsu.202400480
Anamika Chatterjee, Kathirvel A, Thirugnasambandam G. Manivasagam, Sudip K. Batabyal

This study introduces a remarkably sensitive self-powered Ultra Violet (UV) photodetector utilizing photosynthetic algae coupled with modified electrodes. The device achieves exceptional sensitivity and stability in photodetection under self-powered operation by leveraging photosynthetic green algae. Notably, the device demonstrates impressive responsivity, and detectivity of 0.44 A W−1, and 4 ×1010 Jones respectively for 365 nm of the incident light with the lowest intensity of 530 nW cm−2 at zero bias condition. Additionally, it exhibits rapid rise and decay times, clocking in at 0.15 and 0.16 s, respectively, for optimized performance. This self-powered algal UV photodetector offers high sensitivity, stability, and swift response/recovery rates, presenting a promising solution for current challenges in UV detection applications for sustainable society.

本研究介绍了一种非常灵敏的自供电紫外(UV)光电探测器,利用光合藻类与修饰电极耦合。该装置利用光合作用的绿藻,在自供电操作下实现了卓越的光检测灵敏度和稳定性。值得注意的是,该器件在零偏置条件下对365 nm入射光(最低强度为530 nW cm−2)的响应率和探测率分别为0.44 A W−1和4 ×1010 Jones。此外,它表现出快速的上升和衰减时间,分别为0.15和0.16秒,以优化性能。这种自供电的藻类紫外线光电探测器具有高灵敏度,稳定性和快速的响应/回收率,为可持续社会中紫外线检测应用的当前挑战提供了一个有希望的解决方案。
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引用次数: 0
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Advanced Sustainable Systems
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