Porous materials in analytical sample preparation: Current status and future perspectives

TrAC Trends in Analytical Chemistry, Год журнала: 2025, Номер unknown, С. 118193 - 118193

Опубликована: Фев. 1, 2025

Язык: Английский

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Machine Learning Relationships Between Nanoporous Structures and Electrochemical Performance in MOF Supercapacitors

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

The development of supercapacitors is impeded by the unclear relationships between nanoporous electrode structures and electrochemical performance, primarily due to challenges in decoupling complex interdependencies various structural descriptors. While machine learning (ML) techniques offer a promising solution, their application hindered lack large, unified databases. Herein, constant-potential molecular simulation used construct supercapacitor database with hundreds metal-organic framework (MOF) electrodes. Leveraging this database, well-trained decision-tree-based ML models achieve fast, accurate, interpretable predictions capacitance charging rate, experimentally validated representative case. SHAP analyses reveal that specific surface area (SSA) governs gravimetric while pore size effects are minimal, attributed strong dependence electrode-ion coordination on SSA rather than size. porosity, respectively, dominate volumetric 1D-pore 3D-pore MOFs, pinnacling indispensable dimensionality. Meanwhile, porosity found be most decisive factor rate for both MOFs. Especially an exponential increase observed ionic conductance in-pore ion diffusion coefficient, ascribed loosened packing. These findings provide profound insights design high-performance

Язык: Английский

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Scalable 2D/2D Assembly of Ultrathin MOF/MXene Sheets for Stretchable and Bendable Energy Storage Devices

Advanced Functional Materials, Год журнала: 2023, Номер 34(11)

Опубликована: Дек. 6, 2023

Abstract Scalable assembly of two dimensional (2D) lamellar nanomaterials for deformable films has potential in wearable energy storage devices, but overcoming the trade‐off mechanical and properties is a challenge. Here, blade‐coating strategy reported to develop highly stretchable bendable metal‐organic frameworks/large‐sized Ti 3 C 2 T x MXene (MOF/LMX) composite on pre‐stretched elastomer substrates. The LMX sheets serve as conductive scaffolds loading small‐sized ultrathin MOF (SUMOFs), resulting an improved tensile strength (≈97 MPa) films, which guarantees their structural integrity when forming wavy structure relaxed substrate. In addition, SUMOFs incorporated in‐between layers not only expose active redox sites by mitigating intrinsic self‐restacking also accelerate electron transfer reaction process revealed through density functional theory calculations. As result, deliver high electrical conductivity (3244 S cm −1 ) capability (1238 F g ). When assembled into asymmetric supercapacitor device, it exhibits stable performances under different bending stretching states. Thus, development conducting MOF‐based with mechanical, electrical, enables commercial applications electronics.

Язык: Английский

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Recent advances of ammonia synthesis under ambient conditions over metal-organic framework based electrocatalysts

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 340, С. 123161 - 123161

Опубликована: Авг. 10, 2023

Язык: Английский

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Interfacial Engineering of Heterogeneous Reactions for MOF‐on‐MOF Heterostructures

Small, Год журнала: 2023, Номер 20(20)

Опубликована: Дек. 10, 2023

Abstract Metal–organic frameworks (MOFs), as a subclass of porous crystalline materials with unique structures and multifunctional properties, play pivotal role in various research domains. In recent years, significant attention has been directed toward composite based on MOFs, particularly MOF‐on‐MOF heterostructures. Compared to individual MOF materials, harness the distinctive attributes two or more different enabling synergistic effects allowing for tailored design diverse multilayered architectures expand their application scope. However, rational facile synthesis are principle challenging due structural diversity intricate interfaces. Hence, this review primarily focuses elucidating factors that influence interfacial growth, specific emphasis engineering heterogeneous reactions, which hybrids can be conveniently obtained by using pre‐fabricated precursors. These categorized internal external elements, encompassing inorganic metals, organic ligands, lattice matching, nucleation kinetics, thermodynamics, etc. Meanwhile, these intriguing offer wide range advantages fields, such adsorption, separation, catalysis, energy‐related applications. Finally, highlights current complexities challenges while providing forward‐looking perspective future directions.

Язык: Английский

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N-doped EG@MOFs derived porous carbon composite phase change materials for thermal optimization of Li-ion batteries at low temperature

Energy, Год журнала: 2023, Номер 286, С. 129637 - 129637

Опубликована: Ноя. 10, 2023

Язык: Английский

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Electrochemical deposition for metal organic Frameworks: Advanced Energy, Catalysis, sensing and separation applications

Journal of Electroanalytical Chemistry, Год журнала: 2023, Номер 937, С. 117417 - 117417

Опубликована: Апрель 5, 2023

Язык: Английский

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Enhanced Active Sites and Stability in Nano‐MOFs for Electrochemical Energy Storage through Dual Regulation by Tannic Acid

Angewandte Chemie, Год журнала: 2023, Номер 135(41)

Опубликована: Авг. 21, 2023

Abstract The limited active sites and poor acid‐alkaline solution stability of metal–organic frameworks (MOFs), significantly limit their wider application. In this study, the acid property tannic (TA) was used as an etchant to etch surface‐active sites. Subsequently, further chelation protonated TA with exposed metal site can effectively protect ions. Meanwhile, provided a large amount phenolic hydroxyl groups, which greatly improve imidazolate‐coordinated MOFs. electrochemical test results indicated that MOFs composite materials synthesized using scheme had high specific capacitance stability. And mechanism its reaction process explored through in situ X‐ray diffraction (XRD) theoretical calculations. addition, same treatment carried out series carboxyl‐coordinated MOFs, confirmed principle obtain higher This paper explains functionalization nano‐MOFs by polyphenolic compounds, providing new ideas for research nano‐MOFs.

Язык: Английский

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Recent Progress on Nickel- and Iron-Based Metallic Organic Frameworks for Oxygen Evolution Reaction: A Review

Langmuir, Год журнала: 2024, Номер 40(5), С. 2465 - 2486

Опубликована: Янв. 24, 2024

Developing sustainable energy solutions to safeguard the environment is a critical ongoing demand. Electrochemical water splitting (EWS) green approach create effective and long-lasting electrocatalysts for oxidation process. Metal organic frameworks (MOFs) have become commonly utilized materials in recent years because of their distinguishing pore architectures, metal nodes easy accessibility, large specific surface areas, shape, adaptable function. This review outlines most significant developments current work on developing improved MOFs enhancing EWS. The benefits drawbacks are first discussed this review. Then, some cutting-edge methods successfully modifying also highlighted. Recent progress nickel (Ni) iron (Fe) based been critically discussed. Finally, comprehensive analysis existing challenges prospects Ni- Fe-based summarized.

Язык: Английский

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Cucumber‐Derived Extracellular Vesicle‐Functionalized Metal‐Organic Frameworks for Enhanced Photodynamic Therapy of Hypertrophic Scars

Advanced Functional Materials, Год журнала: 2024, Номер 34(29)

Опубликована: Март 13, 2024

Abstract Photodynamic therapy (PDT) with noninvasiveness and high safety has emerged as a promising therapeutic approach for the management of hypertrophic scars (HS). However, low transdermal delivery overexpressed levels intracellular glutathione (GSH) severely hinder its effectiveness. Herein, multifunctional biomimetic nanoplatform (NDs@EV‐RGD) composed arginine‐glycine‐aspartic acid (RGD)‐modified cucumber‐derived extracellular vesicles (EVs) copper‐based metal‐organic framework nanodots (Cu‐MOF NDs) is designed PDT‐mediated HS treatment. The EVs Young's modulus exhibit excellent deformability which endow NDs@EV‐RGD capacity to overcome compact stratum corneum barrier, thereby significantly improving their efficiency. Notably, RGD targeting peptide displays specific binding α1β1 integrin on fibroblast membranes within HS, leading accumulation efficiency at site. Under near‐infrared laser irradiation, efficiently generates abundant reactive oxygen species, inducing apoptosis excessively proliferated fibroblasts. Moreover, Cu‐MOF NDs interact local GSH, GSH depletion significant enhancement in PDT efficacy. Furthermore, demonstrates remarkable effect appearance rabbit ear model, promoting remodeling collagen fibers. Therefore, this work provides platform

Язык: Английский

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