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The underestimated and important role of thiol moieties in predicting the fate of toxic metals in the environment 巯基部分在预测环境中有毒金属的命运方面被低估的重要作用
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-01 DOI: 10.1016/j.cocis.2024.101888
Charlotte Catrouillet , Marc F. Benedetti , Alexandre Gelabert , Eric van Hullebusch , Rémi Marsac
Studying the interactions between metals and thiol moieties in natural systems is challenging, although they are of major importance for some (ultra)trace elements (e.g. Hg, Cu, Pt). A major current bottleneck is the development of accurate preservation and detection methods. Based on our current knowledge, thiol moieties are abundant in reduced organic waters, where thiolation of natural organic matter (NOM) occurs, as well as in metal-enriched environments, where organisms secrete thiol moieties. Depending on their affinity and their redox potential, metals complexed to thiolated NOM can be reduced and even transformed into sulfur nanoparticles over time. Such mechanisms are not properly considered in currently used biogeochemical models, explaining why the fate of metals in the environment is not well predicted.
研究自然系统中金属与硫醇部分之间的相互作用是具有挑战性的,尽管它们对某些(超)微量元素(如汞,铜,铂)具有重要意义。目前的一个主要瓶颈是开发准确的保存和检测方法。根据我们目前的知识,硫醇部分在还原有机水中是丰富的,其中天然有机物(NOM)发生硫代化,以及在富含金属的环境中,生物分泌硫醇部分。随着时间的推移,取决于它们的亲和力和氧化还原电位,金属与硫化的NOM络合可以被还原,甚至转化为硫纳米颗粒。这种机制在目前使用的生物地球化学模型中没有得到适当的考虑,这解释了为什么金属在环境中的命运不能很好地预测。
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引用次数: 0
Recent progress in I-III-VI colloidal quantum dots-integrated solar cells I-III-VI胶体量子点集成太阳能电池研究进展
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-01 DOI: 10.1016/j.cocis.2024.101890
Zhonglin Du , Dongling Ma
Colloidal quantum dots (CQDs) have emerged as an important class of nanocrystal materials for solar cell applications due to their outstanding properties, including tunable band gap, high charge carrier mobility, remarkable light absorption range, solution-processability, scalability, etc. The Lead (Pb)/Cadmium (Cd)-free I-III-VI QDs, designed by the reasonable chemical substitution of Pb and Cd with non-toxic elements, are booming as an attractive alternative for practical applications. This review summarizes the recent progress in designing typical I-III-VI QDs and their application in various emerging solar cell applications. The performance improvement of various solar cells due to the integration of QDs having different roles and modified device structures is summarized. In addition, the fundamentals of the I-III-VI QDs, including their crystalline structure, optical properties, and synthesis mechanisms, are described. Finally, we provide perspectives on the current status, challenges, and future directions of I-III-VI QDs-integrated solar cells.
胶体量子点(CQDs)由于其优异的性能,包括可调带隙、高载流子迁移率、显著的光吸收范围、溶液可加工性、可扩展性等,已成为太阳能电池应用中重要的一类纳米晶体材料。利用无毒元素对铅和镉进行合理的化学替代,设计出无铅(Pb)/镉(Cd)的I-III-VI量子点,是一种极具应用前景的替代材料。本文综述了近年来典型的I-III-VI量子点的设计及其在各种新兴太阳能电池中的应用。综述了不同作用量子点的集成和器件结构的改进对各种太阳能电池性能的改善。此外,还描述了I-III-VI量子点的基本原理,包括它们的晶体结构、光学性质和合成机制。最后,对I-III-VI量子点集成太阳能电池的现状、挑战和未来发展方向进行了展望。
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引用次数: 0
Direct ink writing of particle-based multiphase materials: From rheology to functionality 颗粒基多相材料的直墨书写:从流变性到功能性
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-02-01 DOI: 10.1016/j.cocis.2024.101889
Stijn De Smedt , Benedetta Attaianese , Ruth Cardinaels
Direct ink writing (DIW) allows producing complicated geometries by extruding material from a nozzle. The ink has to meet certain material requirements during and after printing for the object to be successfully produced. Meanwhile, the functionality requirements of the end-use application should be met. This paper attempts to provide the rheological basis and critical view to understand the material requirements for DIW inks and to help in making the bridge between the rheology and printability of particle-based multiphase DIW inks while meeting the functional demands of the end product. Colloidal suspensions and Pickering emulsions are often used as material classes for DIW. Some of the most important and noteworthy applications are described for both material classes. Thereafter, a more novel, particle-based multiphase system for DIW, namely capillary suspensions, is briefly discussed.
直接墨水书写(DIW)允许通过从喷嘴挤出材料来生产复杂的几何形状。油墨必须在印刷过程中和印刷后满足一定的材料要求,才能成功地生产出来。同时,应满足最终用途应用程序的功能需求。本文试图为了解DIW油墨的材料要求提供流变学基础和批判性观点,并有助于在满足最终产品功能需求的同时,在颗粒基多相DIW油墨的流变学和印刷性之间搭建桥梁。胶体悬浮液和皮克林乳剂通常用作DIW的材料类别。介绍了这两种材料的一些最重要和最值得注意的应用。然后,简要讨论了一种更新颖的基于颗粒的DIW多相系统,即毛细管悬浮液。
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引用次数: 0
Modeling drop deformations and rheology of dilute to dense emulsions 模拟稀至浓乳剂的液滴变形和流变性
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-01-31 DOI: 10.1016/j.cocis.2025.101904
Rodrigo B. Reboucas, Nadia N. Nikolova, Vivek Sharma
We highlight the current state-of-the-art in modeling emulsion rheology, ranging from dilute to jammed dense systems. We focus on analytical and numerical methods developed for calculating, computing, and tracking drop deformation in response to viscometric flows and deriving constitutive models for flowing emulsions. We identify material properties and dimensionless parameters, collate and catalog the small deformation theories and resulting expressions for viscometric quantities, and take stock of challenges for capturing connections between drop deformation, morphology, and rheology of emulsions. We highlight the substantial progress in providing quantitative descriptions of the rheological response using analytical theories, scaling, and computational fluid dynamics. We illustrate how macroscopic rheological properties emerge from microscopic features including the deformation and dynamics of noninteracting or interacting drops, and molecular aspects that control the interfacial properties.
我们强调了目前最先进的乳液流变学模型,范围从稀释到堵塞密集系统。我们专注于分析和数值方法的发展,计算,计算和跟踪液滴变形响应粘度流动和推导本构模型的流动乳剂。我们确定了材料特性和无量纲参数,整理和编目了小变形理论和由此产生的粘度量表达式,并对捕获液滴变形、形态和乳液流变之间的联系所面临的挑战进行了评估。我们强调了在利用分析理论、标度和计算流体动力学提供流变响应定量描述方面取得的实质性进展。我们说明宏观流变特性是如何从微观特征中产生的,包括非相互作用或相互作用滴的变形和动力学,以及控制界面特性的分子方面。
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引用次数: 0
Self-assembly of magnetic colloids under unsteady fields 非定常磁场下磁性胶体的自组装
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-01-30 DOI: 10.1016/j.cocis.2025.101903
G. Camacho, J.R. Morillas, J. de Vicente
The use of magnetic fields offers an external, versatile way of controlling self-assembly of colloids. This review provides an exhaustive overview of unsteady fields that can vary in one, two, or three dimensions of space, as a powerful tool to direct the self-assembly of magnetic colloids into structures with tunable properties. Unlike steady fields, unsteady (nonstationary) fields can overcome the limitations of classical dipolar interactions, leading to a much wider range of structures, ranging from dense crystalline aggregates to 3D spanning networks, or dynamic clusters. The ability to precisely control the amplitude, frequency, and field direction allows for fine-tuning the interplay of interparticle forces, resulting in controllable assembly pathways. This review analyzes how different types of unsteady fields influence the morphology and dynamics of the self-assembled structures. Key parameters, such as the Mason number, are discussed to characterize the governing driving forces, and potential applications are highlighted.
磁场的使用提供了一种外部的、通用的方法来控制胶体的自组装。这篇综述提供了一个详尽的非定常场的概述,可以在一个,两个,或三维空间变化,作为一个强大的工具来指导磁性胶体的自组装成具有可调性质的结构。与稳定场不同,非定常(非定常)场可以克服经典偶极相互作用的局限性,从而产生更广泛的结构,从密集的晶体聚集体到3D跨越网络或动态簇。精确控制振幅、频率和场方向的能力允许微调粒子间力的相互作用,从而实现可控的组装路径。本文分析了不同类型的非定常场对自组装结构形态和动力学的影响。讨论了关键参数,如梅森数,以表征控制驱动力,并强调了潜在的应用。
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引用次数: 0
Linear viscoelasticity of physically aging soft glassy (Thixotropic) materials 物理老化软玻璃(触变)材料的线性粘弹性
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-01-21 DOI: 10.1016/j.cocis.2025.101896
Yogesh M. Joshi
Soft glassy materials are distinguished by their arrested microstructures and out-of-equilibrium thermodynamic states. These materials exhibit time dependent evolution of viscoelastic properties, driven by structural buildup under quiescent conditions, known as physical aging. As a result, they do not obey the standard linear viscoelastic framework, which is well-established for equilibrium materials. This article explores the application of linear viscoelastic principles to soft glassy materials by employing the effective time theory that readjusts the material clock to address the time dependence associated with the same. We explore how the effective time domain approach validates key linear viscoelastic principles, including the Boltzmann superposition principle, convolution relation, time–temperature superposition, time–stress superposition, and the Fourier transform relationship between relaxation modulus and complex modulus. We also discuss the relationship between soft glassy materials and thixotropy. These insights highlight the critical role of effective time in comprehending the intricate rheological characteristics of soft glassy materials.
软玻璃材料的特点是其微观结构停滞和热力学状态不平衡。这些材料表现出粘弹性性能随时间的演变,由静态条件下的结构积累驱动,称为物理老化。因此,它们不服从标准的线性粘弹性框架,这是公认的平衡材料。本文探讨了线性粘弹性原理在软玻璃材料中的应用,采用有效时间理论,重新调整材料时钟,以解决与之相关的时间依赖性。我们探讨了有效时域方法如何验证关键的线性粘弹性原理,包括玻尔兹曼叠加原理、卷积关系、时间-温度叠加、时间-应力叠加以及松弛模量和复模量之间的傅里叶变换关系。我们还讨论了软玻璃材料与触变性的关系。这些见解强调了有效时间在理解软玻璃材料复杂的流变特性中的关键作用。
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引用次数: 0
Current scenario and future trends on stability issues of perovskite solar cells: A mini review 钙钛矿太阳能电池稳定性问题的现状和未来趋势:一个小综述
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2025-01-15 DOI: 10.1016/j.cocis.2025.101895
Mohammad Nur-E-Alam , Md Saiful Islam , Tarek Abedin , Mohammad Aminul Islam , Boon Kar Yap , Tiong Sieh Kiong , Narottam Das , Md Rezaur Rahman , Mayeen Uddin Khandaker
Perovskite solar cells (PSCs) are considered a new paradigm in photovoltaic energy technology due to their extraordinary power conversion capabilities. However, their commercialization is hindered by stability issues. The current understanding of PSC degradation mechanisms focuses on factors such as moisture, oxygen, light, temperature, and electrical bias are comprehensively analyzed in this review article. The essential encapsulation strategies require further refinement for long-standing stability. Material engineering, including compositional tuning and defect passivation, has shown promise in enhancing intrinsic perovskite stability. Interface tuning between the perovskite layer and charge transport materials (hole and electron transport layers) is crucial for suppressing ion migration and charge recombination. Additionally, the advanced characterization techniques offer to dive into the degradation pathways, enabling targeted stability improvements. Despite substantial progress in obtaining higher efficiency in PSCs, it is still challenging to achieve the expected stability in PSCs. The development of novel perovskite materials with enhanced structural stability, improved encapsulation strategies, and an understanding of degradation mechanisms at the molecular level should be the imminent research focus with the development of accelerated testing methodologies and field trials essential for evaluating long-standing performance. PSCs will be a major contributor to renewable energy generation once the stability issues with their structure are erased.
钙钛矿太阳能电池(PSCs)由于其非凡的功率转换能力而被认为是光伏能源技术的新范例。然而,它们的商业化受到稳定性问题的阻碍。本文对目前对PSC降解机制的认识主要集中在水分、氧气、光、温度和电偏压等因素上进行了综合分析。基本的封装策略需要进一步改进以实现长期的稳定性。材料工程,包括成分调谐和缺陷钝化,已经显示出增强钙钛矿固有稳定性的希望。钙钛矿层和电荷输运材料(空穴和电子输运层)之间的界面调整对于抑制离子迁移和电荷复合至关重要。此外,先进的表征技术可以深入研究降解途径,从而有针对性地提高稳定性。尽管PSCs在获得更高效率方面取得了实质性进展,但要实现预期的PSCs稳定性仍然具有挑战性。开发具有增强结构稳定性、改进封装策略和在分子水平上理解降解机制的新型钙钛矿材料应该是迫在眉睫的研究重点,同时开发加速测试方法和现场试验对于评估长期性能至关重要。一旦PSCs结构的稳定性问题被消除,它将成为可再生能源发电的主要贡献者。
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引用次数: 0
Polymer – surfactant interactions and compatibility for ionic surfactants combined with hydrophilic polymers: Stability and miscibility vs. segregative or associative phase separation and deposition 聚合物-表面活性剂的相互作用和离子表面活性剂与亲水性聚合物的相容性:稳定性和混溶性与分离或结合相分离和沉积
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-12-30 DOI: 10.1016/j.cocis.2024.101894
Tobias Halthur , Jonas Carlstedt
The phase behavior of aqueous mixtures of polymers and surfactants has been widely studied over the past thirty years. Not only for the academic interest in the richness in the structures formed, but also for the potential this combination holds in a number of different applications, ranging from cleaning products and cosmetics to pharmaceuticals and oil recovery. However, when developing these products, it is essential to know when the species are miscible, when the aim might be to build viscosity, or how to trigger associative phase separation, as for deposition of coacervates in care shampoos. The phase behavior is not only determined by the choice of the polymer and surfactant, but also to a large extent affected by additions of co-surfactants and salt, which will be discussed in this review. Additional aspects to be considered for less-studied, more natural and sustainable polymers and surfactants will also be presented.
在过去的三十年里,人们对聚合物和表面活性剂的水相混合物的相行为进行了广泛的研究。不仅因为其丰富的结构在学术上的兴趣,也因为这种组合在许多不同的应用中所具有的潜力,从清洁产品和化妆品到制药和石油回收。然而,在开发这些产品时,必须知道什么时候物种是可混溶的,什么时候目的可能是建立粘度,或者如何触发结合相分离,如在护理洗发水中沉积凝聚体。相行为不仅取决于聚合物和表面活性剂的选择,而且在很大程度上受助表面活性剂和盐的加入的影响,本文将对此进行讨论。对于研究较少、更天然、更可持续的聚合物和表面活性剂,还将提出其他需要考虑的方面。
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引用次数: 0
Organic solar cells: Principles, materials, and working mechanism 有机太阳能电池:原理、材料和工作机理
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-12-27 DOI: 10.1016/j.cocis.2024.101893
Elisa Antolin , Javier Urieta-Mora , Agustín Molina-Ontoria , Nazario Martín
The most significant advances in the development of organic solar cells (OSCs) along the last three decades are presented. The key aspects of OSCs such as the photovoltaic principles regarding the mechanism for the generation of the exciton and the transport of the carriers to the respective electrodes are explained. Furthermore, the most common organic materials used as the photoactive layer are discussed, highlighting those that have been more successful and extensively studied in the literature such as donor polymers (PM6), fullerene acceptor ([60]PCBM), or small-molecule acceptors (ITIC and Y6 families). The evolution of the efficiency of OSCs with the introduction of these innovative materials has also been included. Other critical issue for a better understanding of OSCs, namely the control of the morphology in the device fabrication is also considered by gathering the most important advances on this critical photovoltaic parameter. In addition, the review presents some technology metrics regarding the cost of the energy, the durability of the devices, or the environmental impact that are critical for the coming commercialization of this advanced technology.
本文介绍了近三十年来有机太阳能电池(OSCs)发展中最重要的进展。解释了osc的关键方面,如关于激子产生机制的光伏原理和载流子到各自电极的输运。此外,还讨论了最常见的用作光活性层的有机材料,重点介绍了那些在文献中更成功和广泛研究的材料,如供体聚合物(PM6),富勒烯受体([60]PCBM)或小分子受体(ITIC和Y6家族)。随着这些创新材料的引入,OSCs效率的演变也被包括在内。更好地理解osc的其他关键问题,即器件制造中的形态控制,也通过收集这一关键光伏参数的最重要进展来考虑。此外,该综述还提出了一些关于能源成本、设备耐用性或环境影响的技术指标,这些指标对这项先进技术的商业化至关重要。
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引用次数: 0
Data-driven techniques in rheology: Developments, challenges and perspective 流变学中的数据驱动技术:发展、挑战与展望
IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-11-02 DOI: 10.1016/j.cocis.2024.101873
Deepak Mangal, Anushka Jha, Donya Dabiri, Safa Jamali
With the rapid development and adoption of different data-driven techniques in rheology, this review aims to reflect on the advent and growth of these frameworks, survey the state-of-the-art methods relevant to rheological applications, and explore potential future directions. We classify different machine learning (ML) methodologies into data-centric and physics-informed frameworks. Data-centric methods leverage conventional ML techniques to uncover relationships within specific datasets, demonstrating success in rheological properties prediction, material characterization, properties optimization, and accelerated numerical simulations. Physics-informed machine learning combines physical laws and domain knowledge with data to produce generalizable and physically consistent predictions, proving effective in solving rheological differential equations, utilizing multi-fidelity datasets to enhance predictions, and constitutive modeling. The paper also discusses the limitations of these approaches and the ongoing efforts to address them. Looking ahead, this article emphasizes the need for explainable ML techniques to enhance transparency and trust, improved tools for uncertainty quantification. These advancements could significantly transform rheology and non-Newtonian fluid mechanics by enabling more robust, insightful, and efficient data-driven methodologies.
随着各种数据驱动技术在流变学领域的快速发展和采用,本综述旨在反思这些框架的出现和发展,调查与流变学应用相关的最新方法,并探索潜在的未来方向。我们将不同的机器学习(ML)方法分为以数据为中心的框架和物理信息框架。以数据为中心的方法利用传统的 ML 技术来揭示特定数据集中的关系,在流变特性预测、材料表征、特性优化和加速数值模拟方面取得了成功。物理信息机器学习将物理定律和领域知识与数据相结合,以产生可推广的、物理上一致的预测结果,在求解流变微分方程、利用多保真度数据集增强预测结果以及构造建模方面证明是有效的。本文还讨论了这些方法的局限性以及为解决这些问题正在进行的努力。展望未来,本文强调需要可解释的 ML 技术来提高透明度和信任度,并改进不确定性量化工具。这些进步可以使数据驱动的方法更稳健、更有洞察力、更高效,从而极大地改变流变学和非牛顿流体力学。
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引用次数: 0
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Current Opinion in Colloid & Interface Science
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