Metal-Organic Frameworks - Science topic

Metal-organic frameworks (MOFs), formed by the self-assembly of metal centers or clusters and organic linkers, possess many key structural and chemical features. MOFs are generally synthesized by employing a modular synthesis, where crystals are slowly grown from a hot solution by nucleation and growth mechanism to form porous structures. The advan...

Lithium–carbon dioxide (Li–CO2) battery represents a high‐energy density energy storage with excellent real‐time CO2 enrichment and conversion, but its practical utilization is hampered by the development of an excellent catalytic cathode. Here, the synergistic catalytic strategy of designing CoRu bimetallic active sites achieves the electrocatalyt...

Precise control of the size and morphology of metal–organic framework (MOF) crystals is challenging yet critical for the expansion of the application potential of MOF materials. This work presents a detailed investigation of the impact of various synthetic conditions such as reactant ratio, acidity, capping agent, reaction solution (H2O, ethanol an...

Two novel Ce(III) metal organic frameworks (MOFs) with formulas [Ce(5Meip)(H-5Meip)]n GR-MOF-17 and [CeCl(5Meip)(DMF)]n GR-MOF-18 (5Meip = 5-methylisophthalate, DMF = N,N-dimethylformamide) have been synthetized forming 3-dimensional frameworks. Magnetic measurements show that...

With the aim to resolve the problem of water pollution, we herein propose a new photocatalyst based on metal–organic frameworks (MOFs), called La-doped MIL-88B(Fe)–NH2 (MIL-88B((1 − x)Fe/xLa)-NH2), which was designed and employed for the photocatalytic reduction of Cr(vi) in aqueous solutions. MIL-88B((1−x)Fe/xLa)-NH2 materials with different x val...

This review highlights the significant potential of MOFs as modifiers for electrodes, showcasing improved electrode capabilities in the determination of inorganic and organic analytes through voltammetric techniques. The enhanced performance of MOF-modified electrodes is primarily attributed to the inherent properties of MOFs, such as substantial s...

Bamboo is composed of thick-walled fibrous tissue and thin-walled parenchymal tissue. To compare the energy consumption of preparing lignocellulose nanofibrils (LCNF) from these bamboo tissues, the crystallinity, sol. viscosity, morphology and mechanical properties of LCNF at different preparation stages were characterized in detail. It required at...

A promising solution for efficient methane (CH4) storage and transport is a metal–organic framework (MOF)-based sorbent. Hence, searching for potential MOFs like M2(BDC)2(DABCO) to enhance the CH4 storage capacity in both gravimetric and volumetric uptakes is essential. Herein, we systematically elucidate the adsorption of CH4 in M2(BDC)2(DABCO) or...

The Stöber method is a widely-used sol-gel route for synthesizing amorphous SiO2 colloids and conformal coatings. However, the material systems compatible with this method are still limited. Herein, we have extended the approach to metal-organic frameworks (MOFs) and coordination polymers (CPs) by mimicking the Stöber method. We introduce a general...

Metal–organic frameworks (MOFs), renowned for their porous and tunable functionalities, hold significant potential for enhancing perovskite photovoltaic. However, the influence of MOF, particularly those with balanced cations in the pores, on the conversion of bottom‐layer PbI2 and the distribution of MOFs within perovskite remains underexplored. H...

In practical operating conditions, the lithium deposition behavior is often influenced by multiple coupled factors and there is also a lack of comprehensive and long‐term validation for dendrite suppression strategies. Our group previously proposed an intermittent lithiophilic model for high‐performance three‐dimensional (3D) composite lithium meta...

Benefiting from the natural attributes of exceptional chemical stability, versatility, porous structure, and tunable pore sizes, pristine metal‐organic frameworks, MOFs, have gained widespread recognition as advanced anodes and cathodes for potassium‐ion batteries, PIBs, showcasing several promising features in electrochemical energy storage device...

Immunogenic cell death (ICD) of tumor cells serves as a crucial initial signal in the activation of anti-tumor immune responses, holding marked promise in the field of tumor immunotherapy. However, low immunogenicity tumors pose challenges in achieving complete induction of ICD, thereby limiting the response rates of immunotherapy in clinical patie...

In oncological nanomedicine, overcoming the dual‐phase high interstitial pressure in the tumor microenvironment is pivotal for enhancing the penetration and efficacy of nanotherapeutics. The elevated tumor interstitial solid pressure (TISP) is largely attributed to the overaccumulation of collagen in the extracellular matrix, while the increased tu...

The utilization of InP-based quantum dots (QDs) as alternative luminescent nanoparticles to cadmium-based QDs is actively pursued. However, leveraging their luminescence for solid-state applications presents challenges due to the sensitivity of InP QDs to oxidation and aggregation-caused quenching. Hence, an appealing strategy is to protect and dis...

Efficient removal of phosphorus from water is an effective means to control lake eutrophication. Two kinds of efficient metal–organic frameworks (MOFs), MIL‐53(Fe) and MIL‐100(Fe), were prepared. These MIL MOFs were used to remove phosphorus from eutrophication lake water. The factors affecting phosphorus adsorption were systematically studied, inc...

The monitoring and precise determination of pesticides and pharmaceutical drugs and their residues have become increasingly important in the field of food safety and water contamination issues. Herein, a fluorescent aluminium MOF‐based sensor (1) was developed for the selective recognition of neonicotinoid insecticide dinotefuran and anti‐Parkinson...

Soft robots adapt to complex environments for autonomous locomotion, manipulation, and perception are attractive for robot‐environment interactions. Strategies to reconcile environment‐triggered actuation and self‐powered sensing responses to different stimuli remain challenging. By tuning the in situ vapor phase solvent exchange effect in continuo...

Perfluorooctanoic acid (PFOA) is a highly recalcitrant organic pollutant, and its bioaccumulation severely endangers human health. While various methods are developed for PFOA removal, the targeted design of adsorbents with high efficiency and reusability remains largely unexplored. Here the rational design and synthesis of two novel zirconium‐base...

Multifunctional proteins were supramolecular conjugated to metal–organic framework for overcoming extracellular matrix of tumor microenvironment and targeting cancer cell.

High-temperature proton exchange membrane fuel cells (HT-PEMFCs) have a major advantage over low-temperature fuel cells due to their better tolerance to higher carbon monoxide content in the hydrogen feed, simpler fuel processing, and better heat management. However, a key challenge in the development of HT-PEMFCs is the potential for acid leaching...

Micro‐/nanomotors (MNMs) in water remediation have garnered significant attention over the past two decades. More recently, metal‐organic framework‐based micro‐/nanomotors (MOF‐MNMs) have been applied for environmental remediation; however, a comprehensive summary of research in this research area is yet to be reported. Herein, a review is presente...

Metal‐organic frameworks (MOFs) have exhibited encouraging catalytic activity for the oxygen evolution reaction (OER), a crucial process for water electrolysis to produce green hydrogen. Nonetheless, distinguishing the source of catalytic activity and establishing the structure‐composition‐property relationships of MOFs during OER processes remain...

Metal-organic frameworks (MOFs) are considered as promising catalytic materials for electrochemical carbon dioxide reduction (ECR) reactions due to their excellent properties. However, the development of efficient and stable electrocatalysts within a wide potential window remains a great challenge. Herein, the rod-like Sn-MOF is synthesized by a fa...

Nanofibers, due to the characteristics of high porosity, large specific surface area, and high strength and mechanical flexibility, exhibit a great potential for gas sensing as a sensing layer or versatile support. The abundant compositions, specific morphology, and tunable pore size of nanofibers are suitable for the detection of diverse environme...

DNA-based theragnostic platforms have attracted more and more attention, while their applications are still impeded by nonspecific interference and insufficient therapeutic efficacy. Herein, we fabricate an integrated “dual-key-and-lock” DNA nanodevice (DKL-DND) which is composed of the inner Dox/Hairpin/Aptazyme-Au@Ag@Au probes and the outer metal...

Micro-nanobubbles (MNBs) can form reactive oxygen species (ROS) with high oxidizing potential. In this study, nickel-doped metal–organic framework materials (MOFs) capable of activating molecular oxygen were synthesized using trivalent arsenic (As(III)) as a target pollutant and combined with peroxymonosulfate (PMS) to construct a MOF/MNB/PMS syste...

The presence of dyes in wastewater poses a significant environmental challenge due to their permanence toxicity and potential to harm ecosystems. Because of their high porosity and adjustable characteristics, metal‐organic frameworks (MOFs) have become attractive materials for effective dye removal. Among various MOFs, zeolitic imidazolate framewor...

Zinc-ion capacitors (ZICs), combining the merits of both high-energy zinc-ion batteries and high-power supercapacitors, are known as high-potential electrochemical energy storage (EES) devices. However, the research on ZICs still faces many challenges because of the lack of appropriate cathode materials with robust crystal structures and rich chann...

Metal–organic frameworks (MOFs) are hybrid porous materials presenting several tuneable properties, allowing them to be utilised for a wide range of applications. To date, focus has been on the preparation of novel crystalline MOFs for specific applications. Recently, interest in amorphous MOFs (aMOFs), defined by their lack of correlated long-rang...

With the rapid growth of the economy, people are increasingly reliant on energy sources. However, in recent years, the energy crisis has gradually intensified. As a clean energy source, methane has garnered widespread attention for its development and utilization. This study employed both large-scale computational screening and machine learning to...

For alkaline anion-exchange membrane electrolysers and fuel cells to become a technological reality, hydroxide-ion (OH⁻) conducting membranes that are flexible, robust, affording high OH⁻ conductivity, and synthesised in a low-cost and scalable way must be developed. In this paper, we engineer a stable, self-supporting, and flexible fibre mat using...

Molecular transport in metal-organic frameworks (MOFs) is an important aspect affecting many of their applications, such as adsorption/separation, drug delivery and catalysis. Yet probing the fundamental diffusion mechanisms in MOFs...

World production of dyes is estimated at more than 800,000 t·yr⁻¹. The purpose of this research falls within the scope of the choice of an effective, local, and inexpensive adsorbent to remove dyes from wastewater. Adsorptive elimination of dyes by commonly accessible adsorbents is inefficient. The metal–organic frameworks (MOFs) are an important c...

Increased energy consumption, driven by climate change and the rise of new industries, has spurred a demand for alternative cooling technologies to replace energy‐intensive systems and mitigate environmental pollution. Radiative cooling, leveraging the optical properties of materials to cool without emitting pollutants or consuming energy, is consi...

Metal–organic frameworks (MOFs) are a class of promising nanomaterials for atmospheric water harvesting (AWH), especially in arid remote areas. However, several challenges are still faced for practical applications because of the dissatisfied water adsorption/desorption properties in terms of the capability, kinetics, and stability. Herein, we repo...

Transconductance (gm) is one important figure of merit for benchmarking organic electrochemical transistor (OECT) biosensors, which nevertheless experiences undesired fluctuation instead of keep constant during the target detection of varied concentrations. Light‐matter interplay is recently shown as a potential way to regulate the OECT characteris...

Increasing amounts of carbon dioxide (CO2) emissions in the atmosphere are a leading cause of climate change. Ultrathin film composite (UTFC) membranes have the potential to effectively reduce CO2 emissions from energy production and industrial processes. UTFC membranes typically require a gutter layer, to provide flat surfaces above the porous sub...

Multi-oxide photocatalytic materials derived from metal organic frameworks (MOFs) are attracting widespread attention in recent years. The heterostructure originating from oxide–oxide junctions and nonmetal doping due to the combustion of organics from MOFs provide desirable properties to the photocatalytic material. In this study, the effects of a...

The field of nanotechnology has ushered in a new era of innovation with the advent of sophisticated materials such as goldene, MXene family, Borophene, multifunctional nanogels, quantum dots, piezoelectric and triboelectric materials, DNA origami, covalent organic frameworks, metal-organic frameworks, nanozymes, porous nnaomaterials, etc. These eme...

Volatile organic compounds (VOCs) are a class of hazardous gases that are widely present in the atmosphere and cause great harm to human health. In this paper, a ratiometric fluorescent probe (Dye@Eu-MOFs) based on a dye-functionalized metal–organic framework was designed to detect VOCs, which showed high sensitivity and specificity for acetaldehyd...

Nanoscopic systems exhibit diverse molecular substructures by which they facilitate specific functions. Theoretical models of them, which aim at describing, understanding, and predicting these capabilities, are difficult to build. Viable quantum-classical hybrid models come with specific challenges regarding atomistic structure construction and qua...

Reactive oxygen species (ROS) play important roles in regulating various physiological functions in the human body, however, excessive ROS can cause serious damage to the human body, considering the various limitations of natural enzymes as scavengers of ROS in the body, the development of better materials for the scavenging of ROS is of great sign...

Nanoscale metal-organic frameworks (MOFs) offer high biocompatibility, nanomaterial permeability, substantial specific surface area, and well-defined pores. These properties make MOFs valuable in biomedical applications, including biological targeting and drug delivery. They also play a critical role in tumor diagnosis and treatment, including tumo...

Catalysts are essential for accelerating chemical reactions without altering the reaction itself. They can be homogeneous or heterogeneous, with heterogeneous catalysts being more recognized due to their lower energy consumption and cost-effectiveness. Biocatalysts, such as enzymes, are highly selective and efficient. The performance of catalysts i...

Methane tri-reforming (MTR) is an innovative approach for the utilization of flue gases. In this study, a new nickel-alumina-based catalyst derived from metal-organic frameworks (MOFs) precursors is developed and tested for MTR. The activity was tested in a packed bed reactor at 600-800 • C and atmospheric pressure. The surface area of MOFs was ver...

The single‐layer MXene fully demonstrates the advantages of 2D materials, especially catalytic, conductive, and mechanical properties. However, the high energy consumption and low efficiency faced by MXene in the divestiture process are still challenges that need to be solved urgently. In this article, dimension mismatch and collaborative stripping...

The rising levels of carbon dioxide (CO2) in the atmosphere pose a significant environmental concern due to their contribution to global warming and climate change. Post-combustion carbon capture (PCCC) and storage is one method to minimize CO2 emissions. Cyclodextrin-based metal-organic frameworks (CD-MOFs) are potential adsorbents for PCCC becaus...

Cyclodextrin metal-organic frameworks (CD-MOFs) exhibit permanent porosity, which makes them an ideal adsorbent material. However, the instability of CD-MOFs in water limits their applications. To overcome this limitation, we encapsulated CD-MOFs in polyacrylonitrile (PAN) and polyvinylpyrrolidone (PVP) polymeric support to produce PAN/PVP/CD-MOF c...

Cellulose fiber-based textiles are ubiquitous in daily life for their processability, biodegradability, and outstanding flexibility. Integrating cellulose textiles with functional coating materials can unlock their potential functionalities to engage diverse applications. Metal-organic frameworks (MOFs) are ideal candidate materials for such integr...

The Chapter provides a comprehensive overview of Metal-Organic Frameworks (MOFs), covering their fundamental aspects, properties, and wide-ranging applications. MOFs, a class of porous crystalline materials, have garnered immense attention due to their tunable structures, exceptional porosity, and unique chemical properties. This chapter delves int...

The design and preparation of efficient catalysts for ammonia production under mild conditions is a desirable but highly challenging target. Here, we report a series of single-atom catalysts [M-SACs, M = Mn(II), Fe(III), Co(II), Ni(II), Cu(II), Zn(II), Mo(II)] derived from UiO-66 containing structural defects and their application to electrochemica...

Increasing concern over the safety of consumable products, particularly aquatic products, due to freshness issues, has become a pressing issue. Therefore, ensuring the quality and safety of aquatic products is paramount. To address this, a dual-mode colorimetric–fluorescence sensor utilizing Ce-MOF as a mimic peroxidase to detect H2S was developed....

Magnetic microrobots have the potential for anti‐cancer drug delivery; however, using dual‐drug to counter drug resistance, a critical issue in cancer research, has only been briefly investigated. This study introduces the double‐layered metal‐organic‐frameworks (MOFs)‐based microswimmers for sustained dual‐drug delivery. These microswimmers are ma...

Finding renewable energy sources to replace fossil energy has been an essential demand in recent years. Hydrogen gas has been becoming a research hotspot for its clean and free-carbon energy. However, hydrogen storage technology is challenging for mobile and automotive applications. Metal–organic frameworks (MOFs) have emerged as one of the most ad...

This chapter focuses on the synthesis, characterization, and applications of Green Metal-Organic Frameworks (GMOFs) that are synthesized in water. The increasing demand for environmentally friendly and sustainable materials has spurred the development of GMOFs, which minimize the use of organic solvents and reduce the environmental impact associate...

Defect‐engineered metal–organic frameworks (MOFs) with outstanding structural and chemical features have become excellent candidates for specific separation applications. The introduction of structural defects in MOFs as an efficient approach to manipulate their functionality provides excellent opportunities for the preparation of MOF‐based mixed m...

We present here the encapsulation of a spin crossover complex C¹ [FeII(L)] (L: 4‐amino‐, 2‐(2‐pyridinylmethylene)hydrazide) inside MOF‐808(Zr), a chemically robust Metal‐Organic Framework. The compound C¹⊂MOF‐808 retains its crystallinity as well as a partial porosity compared to pristine MOF and shows solvatochromism under Volatile Organic compoun...

The oxidative esterification of aldehydes under mild conditions remains a significant challenge. This study introduces a unique defective UiO-66 to achieve gold nanoclusters (AuNCs) for efficient aldehyde oxidation under mild conditions. The construction and characterization of these materials are thoroughly investigated by techniques of XRD, SEM a...

Tröger’s base analogs (TBAs) and their derivatives are versatile, Λ-shaped, tetracyclic chiral building blocks utilized in numerous fields of research. Although various methods for the enantiopurification of TBAs have been demonstrated in the literature, none has achieved it with the use of metal–organic frameworks (MOFs). This investigation introd...

Interfacial engineering of synergistic catalysts is one of the keys to achieving multiple proton‐coupled electron transfer processes in nitrate‐to‐ammonia conversion. Herein, by joining ultrathin nickel‐based metal–organic framework (denoted Ni‐MOF) nanosheets with few‐layered hydrogen‐substituted graphdiyne‐supported copper single atoms and cluste...

The strategy of designing heterogeneous porous catalysts by a post-modification method is a smart strategy to increase the catalytic power of desired catalysts. Accordingly, in this report, metal-organic frameworks based on titanium with acetic acid pending were designed and synthesized via post-modification method. The structure of the target cata...

A metal–organic framework (MOF) quasi‐solid‐state Mg²⁺‐ion conductor is prepared with a conductivity of 0.6 × 10⁻⁴ S cm⁻¹ already at room temperature. Mg‐MOF‐74 acts as host for MgX2 (X = Cl⁻, Br⁻, BF4⁻) dissolved in propylene carbonate, leading to dry free‐flowing powders with liquid electrolyte exhibiting low activation energy of 0.2 eV with Arrh...

The low ionic conductivity of quasi-solid-state electrolytes (QSSEs) at ambient temperature is a barrier to the development of solid-state batteries (SSBs). Conversely, metal-organic frameworks (MOFs) with porous structure and metal sites show great potential for the fabrication of QSSEs. Numerous studies have proven that the structure and function...

Recent machine learning models to accurately obtain gas adsorption isotherms focus on polymers or metal-organic frameworks (MOFs) separately. The difficulty in creating a unified model that can predict the adsorption trends in both types of adsorbents is challenging, owing to the diversity in their chemical structures. Moreover, models trained only...

Morphological anisotropic engineering is powerful to synthesize metal–organic frameworks (MOFs) with versatile physicochemical properties for diverse applications ranging from gas storage/separation to electrocatalysis and batteries, etc. Herein, we developed a carbon substrate guided strategy to manipulate the facet‐dependent coordination for morp...

Presently, two‐dimensional (2D) metal–organic framework (MOF) are drawing increasing attention in energy‐storage areas. However, more and complexed factors would affect the nucleation and growth of 2D MOFs, and subsequently affect the final performance. Particularly, it is important to control the coordination rate between ions and ligands. In this...

Metal–organic frameworks have demonstrated great capacity in catalytic CO2 reduction due to their versatile pore structures, diverse active sites, and functionalization capabilities. In this study, a novel electrocatalytic framework for CO2 reduction was designed and implemented using 2D coordination network-type transition metal–hexahydroxytricycl...

PET/PA6, hollow, segmented-pie, microfiber nonwovens (PET/PA6 HSMNs) play an important role in a microfiber, synthetic leather base. Most of the current PET/PA6 HSMNs generally lack in hygiene performance. Moreover, there is an urgent need for the asymmetric wettability of PET/PA6 HSMNs to ensure the comfort of clothing. In this work, a novel, asym...

This review thoroughly investigates the wide-ranging applications of cellulose-based materials, with a particular focus on their utility in gas separation processes. By focusing on cellulose acetate (CA), the review underscores its cost-effectiveness, robust mechanical attributes, and noteworthy CO2 solubility, positioning it as a frontrunner among...

Human breath contains over 3000 volatile organic compounds, abnormal concentrations of which can indicate the presence of certain diseases. Recently, metal-organic framework (MOF)-metal oxide composite materials have been explored for chemiresistive sensor applications, however their ability to detect breath compounds associated with specific disea...