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Entry of nanoparticles into cells and tissues: status and challenges. 纳米颗粒进入细胞和组织:现状与挑战。
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-12 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.83
Kirsten Sandvig, Tore Geir Iversen, Tore Skotland

In this article we discuss how nanoparticles (NPs) of different compositions may interact with and be internalized by cells, and the consequences of that for cellular functions. A large number of NPs are made with the intention to improve cancer treatment, the goal being to increase the fraction of injected drug delivered to the tumor and thereby improve the therapeutic effect and decrease side effects. Thus, we discuss how NPs are delivered to tumors and some challenges related to investigations of biodistribution, pharmacokinetics, and excretion. Finally, we discuss requirements for bringing NPs into clinical use and aspects when it comes to usage of complex and slowly degraded or nondegradable NPs.

本文将讨论不同成分的纳米粒子(NPs)如何与细胞相互作用并被细胞内化,以及由此对细胞功能产生的影响。制造大量 NPs 的目的是为了改善癌症治疗,其目标是增加注射到肿瘤的药物比例,从而提高治疗效果并减少副作用。因此,我们将讨论如何将 NPs 运送到肿瘤,以及与生物分布、药代动力学和排泄研究相关的一些挑战。最后,我们讨论了将 NPs 应用于临床的要求,以及使用复杂、降解缓慢或不可降解的 NPs 所涉及的各个方面。
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引用次数: 0
Can neutral clusters: a two-step G0W0 and DFT benchmark 中性簇:两步 G0W0 和 DFT 基准
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-08 DOI: 10.3762/bjnano.15.82
S. Bakhsh, Sameen Aslam, Muhammad Khalid, M. Sohail, Sundas Zafar, Sumayya Abdul Wadood, K. Morsy, Muhammad Aamir Iqbal
Electronic and structural properties of calcium clusters with a varying size range of 2–20 atoms are studied using a two-step scheme within the GW and density functional theory (DFT) with generalized gradient approximation (GGA). The GGA overestimates the binding energies, optimized geometries, electron affinities, and ionization potentials reported in the benchmark. The ground-state structure geometry and binding energy were obtained from the DFT for the ground-state structure of each cluster. The binding energy of the neutral clusters of the calcium series follows an increasing trend, except for a few stable even and odd clusters. The electronic properties of the calcium cluster were studied with an all-electron FHI-aims code. In the G0W0 calculation, the magic cluster Ca10 has relatively high ionization potential and low electron affinity. The obtained ionization potentials from the G0W0@PBE calculation showed that the larger cluster has less variation, whereas the electron affinities of the series have an increasing trend. The ionization potentials from the G0W0 benchmark for the calcium cluster series have not yet been described in the literature.
采用 GW 和广义梯度近似密度泛函理论(DFT)的两步方案,研究了大小范围为 2-20 个原子的钙簇的电子和结构特性。GGA 高估了基准中报告的结合能、优化几何结构、电子亲和力和电离势。基态结构几何图形和结合能是根据每个簇的基态结构从 DFT 中获得的。除少数稳定的偶数和奇数簇外,钙系列中性簇的结合能呈上升趋势。用全电子 FHI-aims 代码研究了钙簇的电子特性。在 G0W0 计算中,魔簇 Ca10 具有相对较高的电离势和较低的电子亲和力。从 G0W0@PBE 计算得到的电离电位可以看出,大簇的电离电位变化较小,而该系列的电子亲和力呈上升趋势。根据 G0W0 基准计算得出的钙簇系列电离电位在文献中还没有出现过。
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引用次数: 0
Atomistic insights into the morphological dynamics of gold and platinum nanoparticles: MD simulations in vacuum and aqueous media. 对金和铂纳米粒子形态动力学的原子洞察:真空和水介质中的 MD 模拟。
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-07 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.81
Evangelos Voyiatzis, Eugenia Valsami-Jones, Antreas Afantitis

The thermal response of gold and platinum spherical nanoparticles (NPs) upon cooling is studied through atomistic molecular dynamics simulations. The goal is to identify the morphological transformations occurring in the nanomaterials as well as to quantify their dependence on temperature, chemistry, and NP size. For diameters smaller than 3 nm, the transition temperature from a melted/amorphous to a highly crystalline state varies considerably with NP size. For larger NPs, the transition temperature is almost diameter-independent, yet it differs considerably from the transition temperature of the respective bulk materials. The platinum NPs possess a higher level of crystallinity than the gold counterparts under the same conditions because of the stronger cohesive forces that drive the crystallization process. This observation is also supported by the simulated X-ray powder diffraction patterns of the nanomaterials. The larger NPs have a multifaceted crystal surface, and their shape remains almost constant regardless of temperature variations. The smaller NPs have a smoother and more spherical surface, and their shape varies greatly with temperature. By studying the variation of nano-descriptors commonly employed in QSAR models, a qualitative picture of the NPs' toxicity and reactivity emerges: Small/hot NPs are likely more toxic than their large/cold counterparts. Because of the small size of the NPs considered, the observed structural modifications are challenging to be studied by experimental techniques. The present approach can be readily employed to study other metallic and metal oxide nanomaterials.

通过原子分子动力学模拟研究了金和铂球形纳米粒子(NPs)冷却时的热反应。目的是确定纳米材料中发生的形态转变,并量化它们与温度、化学性质和 NP 尺寸的关系。对于直径小于 3 纳米的纳米粒子,从熔融/非晶态到高结晶态的转变温度随纳米粒子尺寸的变化而变化很大。对于较大的纳米粒子,过渡温度几乎与直径无关,但与相应块体材料的过渡温度有很大差异。在相同条件下,铂 NPs 比金 NPs 具有更高的结晶度,这是因为铂 NPs 在结晶过程中具有更强的内聚力。纳米材料的模拟 X 射线粉末衍射图样也支持这一观察结果。较大的 NP 具有多面的晶体表面,无论温度如何变化,其形状几乎保持不变。较小的 NP 表面更光滑、更球形,其形状随温度变化很大。通过研究 QSAR 模型中常用的纳米描述符的变化,可以定性地了解 NPs 的毒性和反应性:小/热的 NPs 可能比大/冷的 NPs 毒性更强。由于所考虑的 NPs 尺寸较小,观察到的结构变化难以通过实验技术进行研究。本方法可用于研究其他金属和金属氧化物纳米材料。
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引用次数: 0
Recent progress on field-effect transistor-based biosensors: device perspective. 基于场效应晶体管的生物传感器的最新进展:器件视角。
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-06 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.80
Billel Smaani, Fares Nafa, Mohamed Salah Benlatrech, Ismahan Mahdi, Hamza Akroum, Mohamed Walid Azizi, Khaled Harrar, Sayan Kanungo

Over the last few decades, field-effect transistor (FET)-based biosensors have demonstrated great potential across various industries, including medical, food, agriculture, environmental, and military sectors. These biosensors leverage the electrical properties of transistors to detect a wide range of biomolecules, such as proteins, DNA, and antibodies. This article presents a comprehensive review of advancements in the architectures of FET-based biosensors aiming to enhance device performance in terms of sensitivity, detection time, and selectivity. The review encompasses an overview of emerging FET-based biosensors and useful guidelines to reach the best device dimensions, favorable design, and realization of FET-based biosensors. Consequently, it furnishes researchers with a detailed perspective on design considerations and applications for future generations of FET-based biosensors. Finally, this article proposes intriguing avenues for further research on the topology of FET-based biosensors.

过去几十年来,基于场效应晶体管 (FET) 的生物传感器在医疗、食品、农业、环境和军事等各行各业都展现出巨大的潜力。这些生物传感器利用晶体管的电特性来检测蛋白质、DNA 和抗体等多种生物分子。本文全面综述了基于场效应晶体管的生物传感器架构的进展,旨在提高器件在灵敏度、检测时间和选择性方面的性能。综述概述了新出现的基于场效应晶体管的生物传感器,并为达到最佳器件尺寸、有利的设计和实现基于场效应晶体管的生物传感器提供了有用的指导。因此,它为研究人员提供了设计考虑因素的详细视角,以及未来基于场效应晶体管的生物传感器的应用。最后,本文为进一步研究基于场效应晶体管的生物传感器拓扑结构提出了令人感兴趣的途径。
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引用次数: 0
Beyond biomimicry - next generation applications of bioinspired adhesives from microfluidics to composites. 超越仿生学--从微流控技术到复合材料,生物启发粘合剂的下一代应用。
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-08-05 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.79
Dan Sameoto

In this perspective article, Professor Dan Sameoto outlines his opinion on future opportunities in the field of biomimetic adhesives. Despite over twenty years of excellent academic work by groups all around the world in this subfield, the economic value and impact of these materials is somewhat underwhelming. The question for the field is whether it should have a scientific and engineering focus to create every greater performance and understanding of the materials and hope that "if we build it, they will come". Perhaps we should expand our concept on what could be the desirable end applications for such materials and focus efforts on finding better end applications in which these materials can truly shine; a few of those applications like microfluidics and composites are highlighted in this article. It is time for a next generation of research to look beyond biomimicry and look towards re-engineering applications to make use of these materials' unique properties in economically viable ways.

在这篇观点文章中,Dan Sameoto 教授概述了他对仿生物粘合剂领域未来机遇的看法。尽管二十多年来世界各地的研究小组在这一子领域开展了大量出色的学术工作,但这些材料的经济价值和影响却有些不尽如人意。该领域面临的问题是,它是否应该以科学和工程学为重点,创造更高的性能,加深对材料的理解,并寄希望于 "如果我们建造它,他们就会来"。也许我们应该扩大我们的概念,了解这些材料的理想最终应用是什么,并集中精力寻找更好的最终应用,让这些材料真正大放异彩;本文将重点介绍其中的几个应用,如微流体和复合材料。现在是进行下一代研究的时候了,不仅要研究生物仿生学,还要研究如何重新设计应用,以经济可行的方式利用这些材料的独特性能。
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引用次数: 0
Therapeutic effect of F127-folate@PLGA/CHL/IR780 nanoparticles on folate receptor-expressing cancer cells. F127-folate@PLGA/CHL/IR780 纳米粒子对表达叶酸受体的癌细胞的治疗效果。
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-07-31 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.78
Thi Ngoc Han Pham, Phuong-Thao Dang-Luong, Hong-Phuc Nguyen, Loc Le-Tuan, Xuan Thang Cao, Thanh-Danh Nguyen, Vy Tran Anh, Hieu Vu Quang

Theragnostic platforms, which integrate therapeutic and diagnostic capabilities, have gained significant interest in drug research because of to their potential advantages. This study reports the development of a novel multifunctional nanoparticle carrier system based on poly(ᴅ,ʟ-lactic-co-glycolic acid) (PLGA) for the targeted delivery of the chemotherapeutic agent chlorambucil (CHL) and the imaging agent IR780. The approach in this study incorporates Pluronic F127-folate onto the PLGA nanoparticles, which enables targeted delivery to folate receptor-expressing cancer cells. The F127-folate@PLGA/CHL/IR780 nanoparticles were formulated using a nanoprecipitation technique, resulting in small size, high homogeneity, and negative surface charge. Importantly, the folate-targeted nanoparticles demonstrated enhanced uptake and cytotoxicity in folate receptor-positive cancer cell lines (MCF-7 and HepG-2) compared to folate receptor-negative cells (HEK 293). Additionally, the F127-folate@PLGA/CHL/IR780 nanoparticles exhibited a lower IC50 value against cancer cells than non-targeted F127@PLGA/CHL/IR780 nanoparticles. These findings suggest that the developed F127-folate@PLGA/CHL/IR780 nanoparticles hold promise as a theragnostic system for targeted cancer therapy and diagnosis, leveraging the advantages of PLGA, folate targeting, and the integration of therapeutic and imaging agents.

集治疗和诊断功能于一体的热诊断平台因其潜在的优势而在药物研究领域备受关注。本研究报告了一种基于聚(ᴅ,ʟ-乳酸-共羟基乙酸)(PLGA)的新型多功能纳米颗粒载体系统的开发情况,该系统用于靶向递送化疗药物氯霉素(CHL)和成像药物 IR780。本研究的方法是在 PLGA 纳米粒子上加入 Pluronic F127-叶酸,从而实现向表达叶酸受体的癌细胞靶向递送。F127-叶酸@PLGA/CHL/IR780纳米粒子采用纳米沉淀技术配制而成,具有体积小、均匀度高、表面带负电荷等特点。重要的是,与叶酸受体阴性细胞(HEK 293)相比,叶酸靶向纳米颗粒在叶酸受体阳性癌细胞系(MCF-7 和 HepG-2)中表现出更强的吸收和细胞毒性。此外,与非靶向 F127@PLGA/CHL/IR780 纳米粒子相比,F127-叶酸@PLGA/CHL/IR780 纳米粒子对癌细胞的 IC50 值更低。这些研究结果表明,所开发的 F127-叶酸@PLGA/CHL/IR780 纳米粒子有望成为一种用于癌症靶向治疗和诊断的治疗诊断系统,充分利用了 PLGA、叶酸靶向以及治疗剂和成像剂整合的优势。
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引用次数: 0
Electrospun nanofibers: building blocks for the repair of bone tissue. 电纺纳米纤维:修复骨组织的构件。
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-07-25 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.77
Tuğrul Mert Serim, Gülin Amasya, Tuğba Eren-Böncü, Ceyda Tuba Şengel-Türk, Ayşe Nurten Özdemir

Bone, one of the hardest structures of the body, is the basic constituent of the skeletal system, which gives the shape to the body, provides mechanical support for muscles and soft tissues, and provides movement. Even if there is no damage, bone remodeling is a permanent process to preserve and renew the structural, biochemical, and biomechanical integrity of bone tissue. Apart from the remodeling, bone healing is the highly complicated process of repairing deficiencies of bone tissue by the harmonious operation of osteoblasts, osteocytes, osteoclasts, and bone lining cells. Various materials can be used to both trigger the bone healing process and to provide mechanical support to damaged bone. Nanofiber scaffolds are at the forefront of these types of systems because of their extremely large surface area-to-volume ratio, small pore size, and high porosity. Nanofibers are known to be highly functional systems with the ability to mimic the structure and function of the natural bone matrix, facilitating osteogenesis for cell proliferation and bone regeneration. Electrospinning is an easy and fast method to produce non-woven structures consisting of continuous ultrafine fibers with diameters ranging from micrometers down to nanometers. The simplicity and cost-effectiveness of the electrospinning technique, its ability to use a wide variety of synthetic, natural, and mixed polymers, and the formation of highly porous and continuous fibers are the remarkable features of this method. The importance of nanofiber-based scaffolds in bone tissue regeneration is increasing because of suitable pore size, high porosity, osteoinduction, induction of bone growth with osteoconduction, adaptability to the target area, biodegradation, and appropriate mechanical properties, which are among the main parameters that are important in the design of polymeric bone grafts. The aim of this review is to cast light on the increasing use of nanofiber-based scaffolds in bone tissue regeneration and give an insight about bone regeneration, production techniques of the electrospun nanofibers, and varying formulation parameters in order to reach different drug delivery goals. This review also provides an extensive market research of electrospun nanofibers and an overview on scientific research and patents in the field.

骨骼是人体最坚硬的结构之一,是骨骼系统的基本组成部分,它赋予人体形状,为肌肉和软组织提供机械支撑,并提供运动功能。即使没有损伤,骨重塑也是一个永久性的过程,以保持和更新骨组织的结构、生化和生物力学完整性。除了重塑,骨愈合也是一个非常复杂的过程,通过成骨细胞、骨细胞、破骨细胞和骨衬里细胞的和谐运作,修复骨组织的缺陷。各种材料既能触发骨愈合过程,又能为受损骨骼提供机械支撑。纳米纤维支架因其超大的表面积与体积比、小孔径和高孔隙率而在这类系统中处于领先地位。纳米纤维是众所周知的高功能系统,能够模拟天然骨基质的结构和功能,促进成骨细胞增殖和骨再生。电纺丝是一种简便快捷的方法,可生产由直径从微米到纳米的连续超细纤维组成的无纺结构。电纺丝技术简单、成本效益高,可使用多种合成、天然和混合聚合物,并能形成高多孔性的连续纤维,这些都是这种方法的显著特点。纳米纤维基支架在骨组织再生中的重要性与日俱增,因为它具有合适的孔径、高孔隙率、骨诱导、骨诱导骨生长、对目标区域的适应性、生物降解和适当的机械性能,这些都是聚合物骨移植物设计中重要的主要参数。本综述旨在阐明纳米纤维基支架在骨组织再生中越来越多的应用,并深入探讨骨再生、电纺纳米纤维的生产技术以及不同的配方参数,以实现不同的药物输送目标。本综述还对电纺纳米纤维进行了广泛的市场调研,并概述了该领域的科研和专利情况。
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引用次数: 0
Effects of cutting tool geometry on material removal of a gradient nanograined CoCrNi medium entropy alloy. 切削工具几何形状对梯度纳米晶粒钴铬镍中熵合金材料切削的影响
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-07-23 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.76
Yu-Sheng Lu, Yu-Xuan Hung, Thi-Xuyen Bui, Te-Hua Fang

CoCrNi medium-entropy alloys (MEAs) have attracted extensive attention and research because of their superior mechanical properties, such as higher ductility, strength, and toughness. This study uses molecular dynamics (MD) simulations to investigate the cutting behavior of a gradient nanograined (GNG) CoCrNi MEA. Moreover, it explores the influence of relative tool sharpness and rake angle on the cutting process. The results show that an increase in the average grain size of the GNG samples leads to a decrease in the average resultant cutting force, as predicted by the Hall-Petch relationship. The deformation behavior shows that grain boundaries are crucial in inhibiting the propagation of strain and stress. As the average grain size of the GNG sample increases, the range of shear strain distribution and average von Mises stress decreases. Moreover, the cutting chips become thinner and longer. The subsurface damage is limited to a shallow layer at the surface. Since thermal energy is generated in the high grain boundary density, the temperature of the contact zone between the substrate and the cutting tool increases as the GNG size decreases. The cutting chips removed from the GNG CoCrNi MEA substrates will transform into a mixed structure of face-centered cubic and hexagonally close-packed phases. The sliding and twisting of grain boundaries and the merging of grains are essential mechanisms for polycrystalline deformation. Regarding the cutting parameters, the average resultant force, the material accumulation, and the chip volume increase significantly with the increase in cutting depth. In contrast to sharp tools, which mainly use shear deformation, blunt tools remove material by plowing, and the cutting force increases with the increase in cutting-edge radius and negative rake angle.

钴铬镍中熵合金(MEA)具有更高的延展性、强度和韧性等优异的机械性能,因此受到了广泛的关注和研究。本研究采用分子动力学 (MD) 模拟来研究梯度纳米晶粒 (GNG) CoCrNi MEA 的切削行为。此外,研究还探讨了相对刀具锋利度和前角对切削过程的影响。结果表明,正如霍尔-佩奇关系所预测的那样,GNG 样品的平均晶粒尺寸增大会导致平均切削力减小。变形行为表明,晶界对抑制应变和应力的传播至关重要。随着 GNG 样品平均晶粒尺寸的增大,剪切应变分布范围和平均 von Mises 应力也随之减小。此外,切屑变得更薄、更长。次表层损伤仅限于表面的浅层。由于热能是在高晶界密度中产生的,因此随着 GNG 尺寸的减小,基体和切削工具接触区的温度也会升高。从 GNG CoCrNi MEA 基体上取出的切屑将转变为面心立方相和六方紧密堆积相的混合结构。晶界的滑动和扭曲以及晶粒的合并是多晶变形的基本机制。在切削参数方面,随着切削深度的增加,平均结果力、材料累积量和切屑量都会显著增加。与主要利用剪切变形的锋利刀具相比,钝刀通过犁耕去除材料,切削力随刀刃半径和负前角的增加而增加。
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引用次数: 0
Identification of structural features of surface modifiers in engineered nanostructured metal oxides regarding cell uptake through ML-based classification. 通过基于 ML 的分类,识别工程纳米结构金属氧化物中有关细胞吸收的表面改性剂的结构特征。
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-07-22 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.75
Indrasis Dasgupta, Totan Das, Biplab Das, Shovanlal Gayen

Nanoparticles (NPs) are considered as versatile tools in various fields including medicine, electronics, and environmental science. Understanding the structural aspects of surface modifiers in nanoparticles that govern their cellular uptake is crucial for optimizing their efficacy and minimizing potential cytotoxicity. The cellular uptake is influenced by multiple factors, namely, size, shape, and surface charge of NPs, as well as their surface functionalization. In the current study, classification-based ML models (i.e., Bayesian classification, random forest, support vector classifier, and linear discriminant analysis) have been developed to identify the features/fingerprints that significantly contribute to the cellular uptake of ENMOs in multiple cell types, including pancreatic cancer cells (PaCa2), human endothelial cells (HUVEC), and human macrophage cells (U937). The best models have been identified for each cell type and analyzed to detect the structural fingerprints/features governing the cellular uptake of ENMOs. The study will direct scientists in the design of ENMOs of higher cellular uptake efficiency for better therapeutic response.

纳米粒子(NPs)被认为是医学、电子学和环境科学等多个领域的多功能工具。了解纳米粒子表面改性剂的结构方面对其细胞吸收的影响,对于优化其功效和减少潜在的细胞毒性至关重要。细胞吸收受多种因素影响,即 NPs 的尺寸、形状、表面电荷及其表面功能化。本研究开发了基于分类的 ML 模型(即贝叶斯分类、随机森林、支持向量分类器和线性判别分析),以确定对多种细胞类型(包括胰腺癌细胞 (PaCa2)、人内皮细胞 (HUVEC) 和人巨噬细胞 (U937))中 ENMOs 的细胞摄取有显著影响的特征/指纹。已为每种细胞类型确定了最佳模型,并对其进行了分析,以检测支配细胞摄取 ENMOs 的结构指纹/特征。这项研究将指导科学家设计出细胞摄取效率更高的 ENMOs,以获得更好的治疗效果。
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引用次数: 0
Facile synthesis of Fe-based metal-organic frameworks from Fe2O3 nanoparticles and their application for CO2/N2 separation. 从 Fe2O3 纳米颗粒轻松合成铁基金属有机框架及其在 CO2/N2 分离中的应用。
IF 2.6 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-07-19 eCollection Date: 2024-01-01 DOI: 10.3762/bjnano.15.74
Van Nhieu Le, Hoai Duc Tran, Minh Tien Nguyen, Hai Bang Truong, Toan Minh Pham, Jinsoo Kim

A facile approach was employed to fabricate MIL-100(Fe) materials from Fe2O3 nanoparticles through a conventional hydrothermal reaction without the presence of HF and HNO3. Effects of trimesic acid content in the reaction system on the quality and CO2/N2 separation performance of the as-prepared MIL-100(Fe) samples were investigated. Using 1.80 g of trimesic acid in the reaction system yielded the sample M-100Fe@Fe2O3#1.80, which proved to be the optimal sample. This choice struck a balance between the amount of required trimesic acid and the quality of the resulting material, resulting in a high yield of 81% and an impressive BET surface area of 1365.4 m2·g-1. At 25 °C and 1 bar, M-100Fe@Fe2O3#1.80 showed a CO2 adsorption capacity of 1.10 mmol·g-1 and an IAST-predicted CO2/N2 selectivity of 18, outperforming conventional adsorbents in CO2/N2 separation. Importantly, this route opens a new approach to utilizing Fe2O3-based waste materials from the iron and steel industry in manufacturing Fe-based MIL-100 materials.

研究人员采用了一种简便的方法,在不存在 HF 和 HNO3 的情况下,通过传统的水热反应从 Fe2O3 纳米颗粒制备出 MIL-100(Fe)材料。研究了反应体系中三酸含量对制备的 MIL-100(Fe)样品的质量和 CO2/N2 分离性能的影响。在反应体系中使用 1.80 克三聚氰酸可得到 M-100Fe@Fe2O3#1.80 样品,这被证明是最佳样品。这一选择在所需的三羟甲基氨基甲酸量和所得材料的质量之间取得了平衡,从而获得了 81% 的高产率和 1365.4 m2-g-1 的惊人 BET 表面积。在 25 °C 和 1 bar 条件下,M-100Fe@Fe2O3#1.80 的二氧化碳吸附容量为 1.10 mmol-g-1,IAST 预测的 CO2/N2 选择性为 18,在 CO2/N2 分离方面优于传统吸附剂。重要的是,这条路线为利用钢铁工业产生的以 Fe2O3 为基础的废料制造以 Fe 为基础的 MIL-100 材料开辟了一条新途径。
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引用次数: 0
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Beilstein Journal of Nanotechnology
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