Green Carbon最新文献

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Hydrogenation of layered oxide cathodes as a new pathway of self-discharge in lithium-ion batteries 层状氧化物阴极加氢作为锂离子电池自放电的新途径

Green Carbon

Pub Date : 2025-09-01 DOI: 10.1016/j.greenca.2025.03.002

Aobing Du , Zhenyou Li , Maximilian Fichtner , Guanglei Cui

引用次数: 0

Selective conversion of polyolefin waste to light olefins by tandem catalytic cracking and isomerizing ethenolysis 串联催化裂化和异构醇解法选择性转化废聚烯烃为轻烯烃

Green Carbon

Pub Date : 2025-09-01 DOI: 10.1016/j.greenca.2025.03.003

Guangchao Deng , Zhongwen Dong , Liangliang Jiang , Fan Zhang

引用次数: 0

Application of nanocellulose in solar photo/thermal energy conversion and electrochemical energy storage devices 纳米纤维素在太阳能光热转换及电化学储能装置中的应用

Green Carbon

Pub Date : 2025-09-01 DOI: 10.1016/j.greenca.2025.02.001

Chao Wang , Longhang Zhu , Xiangyu Wang , Tamer Mahmoud Tamer , Ruotong Yao , Md Mostafizur Rahman , Lijiaqi Zhang , Min Wu

The recent spate of environmental challenges and increase in global warming have spurred increased focus on renewable biomaterials and the development of next-generation green energy conversion and storage devices. Nanocellulose derived from cellulose—the most prevalent biomass resource on Earth, has received wide attention in the world. It is primarily categorized into cellulose nanofibers (CNFs) and cellulose nanocrystals (CNCs) based on its morphology. Characterized by its high aspect ratio, large specific surface area, unique optical and mechanical properties, and wettability, nanocellulsoe shows high potential for use as a functional material in renewable energy conversion and electric storage applications. This review surveys the latest research on nanocellulose-based membranes, aerogels, and fibers that are used in solar cells, solar evaporators, phase-change material encapsulation, batteries, and supercapacitors. The distinctive structural factors of nanocellulose, such as its morphology, porosity, pore distribution, and crystallinity, significantly affect the efficiency of energy conversion and energy storage capability of related devices. Therefore, the relationship between the structural design of nanocellulose-based materials and performance of target energy devices must be highlighted. This review concludes with a discussion on the current limitations and future prospects of nanocellulose-based energy devices.

最近一系列的环境挑战和全球变暖的加剧促使人们更加关注可再生生物材料和下一代绿色能源转换和存储设备的发展。纳米纤维素是地球上最普遍的生物质资源，其衍生的纳米纤维素受到了世界各国的广泛关注。根据其形态，主要分为纤维素纳米纤维（CNFs）和纤维素纳米晶体（CNCs）。纳米纤维素具有高长宽比、大比表面积、独特的光学和机械性能以及润湿性等特点，在可再生能源转换和电能存储等方面具有很大的应用潜力。本文综述了纳米纤维素膜、气凝胶和纤维在太阳能电池、太阳能蒸发器、相变材料封装、电池和超级电容器等领域的最新研究进展。纳米纤维素的形态、孔隙度、孔隙分布和结晶度等独特的结构因素对相关器件的能量转换效率和能量存储能力有显著影响。因此，纳米纤维素基材料的结构设计与目标能量器件性能之间的关系必须得到重视。本文最后讨论了纳米纤维素为基础的能源装置的局限性和未来前景。

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引用次数: 0

Recent advancements and assessments in MXene-based composites stability for efficient solar-heating water evaporation: A systematic and comprehensive review 高效太阳能加热水蒸发用mxene基复合材料稳定性研究进展

Green Carbon

Pub Date : 2025-09-01 DOI: 10.1016/j.greenca.2025.01.001

Abdul Haleem , Mohib Ullah , Laraib Kiran , Wu Fan , Jianming Pan , Hao Li

MXenes, an extensive family of two-dimensional (2D) materials, have attracted significant attention across diverse fields owing to their exceptional biological, optoelectronic, mechanical, and chemical properties, enabling their application in numerous fields. Among these, photothermal water evaporation (PWE) has emerged as a particularly promising approach in wastewater treatment, driven by the escalating demand for fresh and pure water. Despite the development of various evaporators to address water scarcity, challenges such as low evaporation efficiency and limited scalability hinder their practical implementation. Over the past decade, MXenes have gained substantial interest owing to their unique elemental composition, porous structure, and surface terminations, which result in remarkable physical and chemical properties that depend on their synthesis methods. However, a key challenge in leveraging MXenes lies in their inherent instability, as they are prone to rapid oxidation upon exposure to air. Stabilizing pristine MXenes is, therefore, critical for their long-term application in PWE. This review highlights strategies to enhance the oxidation stability of MXenes through the incorporation of protective materials such as polymers, delignified wood (DW), and carbonaceous compounds, thereby improving their performance in PWE systems. Furthermore, this review delves into the development of MXene-based composite materials, exploring factors and mechanisms pertinent to their role in PWE. This comprehensive analysis provides valuable insights for researchers and practitioners in the field of wastewater treatment.

MXenes是一个广泛的二维（2D）材料家族，由于其卓越的生物，光电，机械和化学特性，使其在许多领域的应用受到了广泛的关注。其中，光热水蒸发（PWE）已成为一种特别有前途的污水处理方法，受到对淡水和纯净水不断增长的需求的推动。尽管开发了各种蒸发器来解决水资源短缺问题，但蒸发效率低和可扩展性有限等挑战阻碍了它们的实际实施。在过去的十年中，MXenes由于其独特的元素组成、多孔结构和表面末端而获得了极大的兴趣，这取决于它们的合成方法，从而导致了显着的物理和化学性质。然而，利用MXenes的一个关键挑战在于其固有的不稳定性，因为它们暴露在空气中容易快速氧化。因此，稳定原始MXenes对于其在PWE中的长期应用至关重要。本文重点介绍了通过加入聚合物、去木质素木材（DW）和碳质化合物等保护材料来提高MXenes氧化稳定性的策略，从而提高其在PWE系统中的性能。此外，本文还对mxene基复合材料的研究进展进行了综述，探讨了其在PWE中作用的相关因素和机制。这一综合分析为污水处理领域的研究人员和实践者提供了有价值的见解。

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引用次数: 0

State-of-the-art advances in biotechnology for polyethylene terephthalate bio-depolymerization 聚对苯二甲酸乙二醇酯生物解聚的生物技术进展

Green Carbon

Pub Date : 2025-09-01 DOI: 10.1016/j.greenca.2025.02.003

Ya-Jun Liu , Jie Zhou , Yanwei Li , Xin Yan , Anming Xu , Xiaoli Zhou , Weidong Liu , Ying Xu , Tianyuan Su , Shaojie Wang , Yinglu Cui , Weiliang Dong , Tianwei Tan , Min Jiang , Zhongli Cui

Polyethylene terephthalate (PET) is a widely used thermoplastic material that contributes significantly to global plastic pollution. To address the pressing need to recycle fossil-derived PET and the critical importance of PET biodepolymerization and recycling technologies as promising green solutions, researchers worldwide are actively developing novel PET-degrading biocatalysts and efficient processes. The advancement of PET depolymerases and PET-degrading microorganisms is regarded as a key aspect of this study. Current studies primarily focus on the exploration, development, and enhancement of effective enzymes and strains, involving their isolation and screening from nature, along with protein design and engineering as informed by the elucidation of enzymatic mechanisms. Significant efforts have been dedicated toward process optimization to enhance the PET hydrolysis reaction. However, translating these laboratory findings into real-world applications remains a significant challenge that is contingent on the applicability of the developed biocatalysts and processes under industrial conditions. This review summarizes the cutting-edge foundational outcomes in the field of PET biodepolymerization and discusses the current challenges and potential solutions to advance PET depolymerization and, ultimately, PET recycling.

聚对苯二甲酸乙二醇酯（PET）是一种广泛使用的热塑性材料，是造成全球塑料污染的重要因素。为了解决化石源PET回收的迫切需求，以及PET生物解聚和回收技术作为有前途的绿色解决方案的关键重要性，世界各地的研究人员正在积极开发新型PET降解生物催化剂和高效工艺。PET解聚酶和PET降解微生物的研究被认为是这一研究的一个关键方面。目前的研究主要集中在探索、开发和增强有效的酶和菌株，包括从自然界中分离和筛选它们，以及通过阐明酶的机制来设计和工程蛋白质。为了提高PET水解反应的效率，人们一直在努力优化工艺。然而，将这些实验室发现转化为现实世界的应用仍然是一个重大挑战，这取决于已开发的生物催化剂和工艺在工业条件下的适用性。本文综述了PET生物解聚领域的前沿基础成果，并讨论了当前面临的挑战和潜在的解决方案，以推进PET解聚并最终实现PET回收。

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引用次数: 0

Enhanced removal and valorization of CO2-adsorbent monoethanolamine by microalgae for green biomanufacturing 微藻对二氧化碳吸附剂单乙醇胺的强化去除和增值用于绿色生物制造

Green Carbon

Pub Date : 2025-06-01 DOI: 10.1016/j.greenca.2025.01.003

Zhiyong Liu , Nahui Hao , Chunqing He , Yuyong Hou , Tingfeng Cheng , Yinghao Wang , Qingling Liu , Qian Shen , Maliheh Safavi , Fangjian Chen , Zhihua Fan , Lei Zhao

Monoethanolamine (MEA) is a frequently utilized absorbent for CO₂ capture in many settings, enabling biomanufacturing using carbon as the resource. Nevertheless, evidence indicates that MEA is toxic to biological systems, and its emissions can exacerbate ecosystem pollution. Therefore, it is imperative that disposal or valorization measures be implemented for effective green biomanufacturing with MEA as the absorbent. This study examined the removal of MEA by Haematococcus pluvialis (H. pluvialis), an astaxanthin-rich microalgae, and its effects on microalgal cells and related mechanisms. Approximately half of the initial MEA was metabolized by H. pluvialis, with the resulting metabolic intermediates including acetyl-CoA. The genes involved in MEA utilization exhibited a significant increase in expression, signifying a pivotal advancement in our understanding of its potential as a nutrient for microalgae. Moreover, the exposure of H. pluvialis to MEA resulted in notable alterations in cellular components, including a 21.7% increase in lipid content and a 27.8% increase in carbohydrate content. Notably, there was a 1.49-fold increase in astaxanthin content, which was accompanied by notable changes in cell morphology. In addition to the increase in astaxanthin production, the antioxidant system was activated to counteract the adverse effects of MEA-induced oxidative stress. Furthermore, enhanced biosynthesis of both carotenoids and fatty acids directly contributed to the elevated cellular astaxanthin levels achieved through MEA metabolism by H. pluvialis. These findings offer valuable insights into the treatment of CO₂ absorbents using microalgae while simultaneously producing high-value and healthy products, which may prove beneficial for the development of sustainable solutions for green biomanufacturing.

在许多情况下，单乙醇胺（MEA）是一种经常用于二氧化碳捕获的吸收剂，使生物制造能够使用碳作为资源。然而，有证据表明，MEA对生物系统有毒，其排放会加剧生态系统污染。因此，为实现以MEA为吸收剂的高效绿色生物制造，必须采取处置或增值措施。本研究考察了富虾青素的微藻雨生红球菌（Haematococcus pluvialis， H. pluvialis）对MEA的去除作用及其对微藻细胞的影响及其机制。大约一半的初始MEA被H. pluvialis代谢，产生的代谢中间体包括乙酰辅酶a。参与MEA利用的基因表达显著增加，这标志着我们对其作为微藻营养物质潜力的理解取得了关键进展。此外，暴露在MEA环境下的雨水蛭细胞成分发生了显著变化，其中脂质含量增加了21.7%，碳水化合物含量增加了27.8%。虾青素含量增加1.49倍，细胞形态发生明显变化。除了虾青素产量增加外，抗氧化系统被激活以抵消mea诱导的氧化应激的不利影响。此外，类胡萝卜素和脂肪酸的生物合成的增强直接促进了水蛭通过MEA代谢而提高细胞虾青素水平。这些发现为利用微藻处理二氧化碳吸收剂同时生产高价值和健康产品提供了有价值的见解，这可能有助于开发绿色生物制造的可持续解决方案。

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引用次数: 0

Highly dispersed Cu0-Cuδ+/MgO-FeOx catalyst for the synergistic enhancement of the hydrogenation of furfural 高分散Cu0-Cuδ+/MgO-FeOx催化剂协同增强糠醛加氢反应

Green Carbon

Pub Date : 2025-06-01 DOI: 10.1016/j.greenca.2024.09.008

Shuaishuai Wang , Lingyu Jia , Shanshan Dang , Mingkun Zhang , Tianliang Lu , Xiang Gao , Weifeng Tu , Zhenzhou Zhang

Cu-based catalysts are advantageous for selectively catalyzing the hydrogenation of the CO bonds in furfural (FF). Nevertheless, debates are ongoing regarding the identification of active sites. FeCu_xMg catalysts were prepared using a hydrotalcite precursor. During the early stages of the reaction, the selective hydrogenation activity of the CO bond exhibited a volcano-shaped trend with increasing Cu content. FeCu_0.15Mg showed the highest hydrogenation activity among all catalysts examined. In-situ X-ray diffraction (XRD), in-situ DRIFT, X-ray photoelectron spectroscopy (XPS) and other analytical techniques confirmed that Cu⁰-Cu^δ+ sites assume a predominant role in catalytic reactions. At the optimal Cu/Fe ratio, the oxygen vacancies generated by FeO_x facilitated the activation of the FF molecules. The highly dispersed Cu⁰-Cu^δ+ sites served a crucial function in the activation of H₂ and the rapid formation of reaction intermediates, significantly accelerating the reaction rate and process of FF hydrogenation.

cu基催化剂有利于选择性催化糠醛（FF）中CO键的加氢反应。然而，关于活性位点的确定仍在进行辩论。采用水滑石前驱体制备了feecuxmg催化剂。在反应初期，随着Cu含量的增加，CO键的选择性加氢活性呈现火山状趋势。FeCu0.15Mg的加氢活性最高。原位x射线衍射（XRD）、原位漂移（DRIFT）、x射线光电子能谱（XPS）等分析技术证实，Cu0-Cuδ+位点在催化反应中起主导作用。在最佳Cu/Fe比下，FeOx产生的氧空位有利于FF分子的活化。高度分散的Cu0-Cuδ+位点对H2的活化和反应中间体的快速生成起着至关重要的作用，显著加快了FF加氢的反应速率和过程。

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引用次数: 0

Photo-Fenton catalyst embedded in photothermal aerogel for efficient solar interfacial water evaporation and purification 光- fenton催化剂嵌入光热气凝胶用于高效的太阳界面水蒸发和净化

Green Carbon

Pub Date : 2025-06-01 DOI: 10.1016/j.greenca.2024.10.003

Xiaoyun Hu , Jianhua Zhou , Xiaojiang Mu , Chengpeng Qiu , Meng Kang , Zhixiang Zhang , Jie Gao , Jing Liu , Lei Miao

Solar steam generation is used for the production of clean water through evaporation. However, during evaporation, high-boiling organic compounds tend to concentrate in the mother liquor, whereas low-boiling organic compounds evaporate with the steam. In this study, a strategy for full-spectrum solar utilization, in which solar steam generation is coupled with photo-Fenton catalysis, was demonstrated for the production of clean water while treating complex wastewater containing high concentrations of organic pollutants. A highly efficient Fenton catalyst, PB/rGO/PPy powder, was developed by integrating Prussian blue (PB), polypyrrole (PPy), and reduced graphene oxide (rGO). The catalyst offers functionality in Fenton catalysis, photothermal conversion, and photogenerated charge transfer channels. It can degrade 95.2% of methyl orange (MO) in 20 min, with a degradation rate constant of 0.251 min⁻¹. Impressively, a PB/rGO/PPy/PVA composite aerogel was created using porous and water-absorbent polyvinyl alcohol (PVA) as a skeleton, where the degradation ability of MO in both deionized water and wastewater reached 100% under 1-sun irradiation, along with an evaporation rate of 1.62 kg m⁻² h⁻¹. This integrated aerogel evaporator can be utilized for producing clean water and treating wastewater containing organic pollutants, which may open new avenues for green technologies with high solar energy utilization efficiencies.

太阳能蒸汽发电通过蒸发来生产清洁的水。然而，在蒸发过程中，高沸点的有机化合物往往集中在母液中，而低沸点的有机化合物随蒸汽蒸发。在本研究中，展示了一种全光谱太阳能利用策略，其中太阳能蒸汽产生与光- fenton催化相结合，用于生产清洁水，同时处理含有高浓度有机污染物的复杂废水。以普鲁士蓝（PB）、聚吡咯（PPy）和还原氧化石墨烯（rGO）为原料，制备了一种高效的Fenton催化剂PB/rGO/PPy粉末。该催化剂具有Fenton催化、光热转化和光生电荷转移通道等功能。在20 min内降解95.2%的甲基橙（MO），降解速率常数为0.251 min−1。以多孔吸水性聚乙烯醇（PVA）为骨架制备了PB/rGO/PPy/PVA复合气凝胶，在1次太阳照射下，MO在去离子水和废水中的降解能力均达到100%，蒸发速率为1.62 kg m−2 h−1。这种集成气凝胶蒸发器可用于生产清洁水和处理含有有机污染物的废水，这可能为太阳能高利用效率的绿色技术开辟新的途径。

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引用次数: 0

New horizons in lignin-first strategies for upgrading lignocellulose 木质素优先升级木质纤维素策略的新视野

Green Carbon

Pub Date : 2025-06-01 DOI: 10.1016/j.greenca.2024.11.004

Fuyan Kang , Houjuan Qi , Zhanhua Huang , Jinguang Hu

引用次数: 0

Harnessing aromatic properties for sustainable bio-valorization of lignin derivatives into flavonoids 利用芳香族特性实现木质素衍生物类黄酮的可持续生物增值

Green Carbon

Pub Date : 2025-06-01 DOI: 10.1016/j.greenca.2024.11.005

Si-Yu Zhu , Na Li , Zhi-Hua Liu , Ying-Jin Yuan , Bing-Zhi Li

Lignin represents the most abundant renewable aromatic source, while flavonoids are aromatic natural compounds with various health-promoting properties and superior biological activities. The bioconversion of lignin derivatives into flavonoids holds promising potential for both lignin valorization and flavonoid synthesis. In this review, we prospect sustainable, atom-economic functionalization routes from lignin-derived aromatics to flavonoids by leveraging lignin’s inherent aromaticity. The representative flavonoid biosynthesis routes had first been elaborated from lignin derivatives in detail. The functionalization reactions involved in incorporating lignin derivatives into flavonoid structure were summarized to promote lignin bioconversion and yield flavonoids with desirable properties. Harnessing the powerful engineering strategies, such as synthetic biology, machine learning, metabolic regulation, boost the flavonoid production in microbial cell factories, enhancing lignin valorization. Overall, lignin functionalization routes for flavonoid biosynthesis hold promise to achieve the feasibility of lignin valorization and the production of flavonoids, contributing significantly to the sustainable bioeconomy.

木质素是最丰富的可再生芳香源，而黄酮类化合物是具有多种促进健康特性和优越生物活性的天然芳香化合物。木质素衍生物的生物转化为类黄酮在木质素增值和类黄酮合成方面都具有广阔的潜力。在这篇综述中，我们展望了利用木质素固有的芳香性，从木质素衍生的芳香烃到类黄酮的可持续的、原子经济的功能化途径。首次详细阐述了木质素衍生物生物合成黄酮类化合物的代表性途径。综述了木质素衍生物与类黄酮结构相结合的功能化反应，以促进木质素的生物转化，生成具有理想性能的类黄酮。利用合成生物学、机器学习、代谢调控等强大的工程策略，促进微生物细胞工厂中类黄酮的产生，增强木质素的增值。综上所述，木质素功能化途径有望实现木质素增值和类黄酮生产的可行性，为可持续生物经济做出重要贡献。

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