MOF water harvester produces water from Death Valley desert air in ambient sunlight

Nature Water, Год журнала: 2023, Номер 1(7), С. 626 - 634

Опубликована: Июль 6, 2023

Язык: Английский

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Sorption‐Based Atmospheric Water Harvesting: Materials, Components, Systems, and Applications

Advanced Materials, Год журнала: 2023, Номер 35(40)

Опубликована: Март 4, 2023

Freshwater scarcity is a global challenge posing threats to the lives and daily activities of humankind such that two-thirds population currently experience water shortages. Atmospheric water, irrespective geographical location, considered as an alternative source. Sorption-based atmospheric harvesting (SAWH) has recently emerged efficient strategy for decentralized production. SAWH thus opens up self-sustaining source freshwater can potentially support various applications. In this review, state-of-the-art SAWH, considering its operation principle, thermodynamic analysis, energy assessment, materials, components, different designs, productivity improvement, scale-up, application drinking first extensively explored. Thereafter, practical integration potential beyond wide range utilities in agriculture, fuel/electricity production, thermal management building services, electronic devices, textile are comprehensively discussed. The strategies reduce human reliance on natural resources by integrating into existing technologies, particularly underdeveloped countries, order satisfy interconnected needs food, energy, also examined. This study further highlights urgent need future research directions intensify design development hybrid-SAWH systems sustainability diverse

Язык: Английский

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MOF Linker Extension Strategy for Enhanced Atmospheric Water Harvesting

ACS Central Science, Год журнала: 2023, Номер 9(3), С. 551 - 557

Опубликована: Март 6, 2023

A linker extension strategy for generating metal-organic frameworks (MOFs) with superior moisture-capturing properties is presented. Applying this design approach involving experiment and computation results in MOF-LA2-1 {[Al(OH)(PZVDC)], where PZVDC2- (E)-5-(2-carboxylatovinyl)-1H-pyrazole-3-carboxylate}, which exhibits an approximately 50% water capacity increase compared to the state-of-the-art water-harvesting material MOF-303. The power of pore volume while retaining ability MOF harvest arid environments under long-term uptake release cycling, as well affording a reduction regeneration heat temperature. Density functional theory calculations Monte Carlo simulations give detailed insight pertaining framework structure, interactions within its pores, resulting sorption isotherm.

Язык: Английский

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Water Adsorption in MOFs: Structures and Applications

Advanced Functional Materials, Год журнала: 2023, Номер 34(43)

Опубликована: Июль 21, 2023

Abstract Metal–organic frameworks (MOFs) are superior sorbents for water adsorption‐based applications. The unique step‐like isotherm at a MOF‐specific relative pressure allows easy loading and regeneration over small range of temperature conditions. With good hydrothermal stability cyclic durability, it stands out classical used in applications humidity control, harvesting, heating cooling. These easily regenerated moderate temperatures using “waste” heat or solar heating. thermodynamics adsorption mechanisms described, the presence MOFs water–air system is explained. Based on six selection criteria ≈40 reported one COF identified potential application. Trends approaches further synthesis optimization production scale‐up highlighted. No‐MOF‐fits‐all, each MOF has its own specific step location matching only with certain application type. Most technically feasible demonstrated bench‐scale pilot. Their maturity benchmarked by their technology readiness level. Retrofitting existing replacing desiccants may lead to rapid demonstration. Studies techno‐economic analysis life cycle required rational evaluation feasibility promising

Язык: Английский

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ChatGPT Research Group for Optimizing the Crystallinity of MOFs and COFs

ACS Central Science, Год журнала: 2023, Номер 9(11), С. 2161 - 2170

Опубликована: Ноя. 10, 2023

We leveraged the power of ChatGPT and Bayesian optimization in development a multi-AI-driven system, backed by seven large language model-based assistants equipped with machine learning algorithms, that seamlessly orchestrates multitude research aspects chemistry laboratory (termed Research Group). Our approach accelerated discovery optimal microwave synthesis conditions, enhancing crystallinity MOF-321, MOF-322, COF-323 achieving desired porosity water capacity. In this human researchers gained assistance from these diverse AI collaborators, each unique role within environment, spanning strategy planning, literature search, coding, robotic operation, labware design, safety inspection, data analysis. Such comprehensive enables single researcher working concert to achieve productivity levels analogous those an entire traditional scientific team. Furthermore, reducing biases screening experimental conditions deftly balancing exploration exploitation parameters, our search precisely zeroed on pool 6 million significantly shortened time scale. This work serves as compelling proof concept for AI-driven revolution laboratory, painting future where becomes efficient collaborator, liberating us routine tasks focus pushing boundaries innovation.

Язык: Английский

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Shaping the Water-Harvesting Behavior of Metal–Organic Frameworks Aided by Fine-Tuned GPT Models

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(51), С. 28284 - 28295

Опубликована: Дек. 13, 2023

We construct a data set of metal-organic framework (MOF) linkers and employ fine-tuned GPT assistant to propose MOF linker designs by mutating modifying the existing structures. This strategy allows model learn intricate language chemistry in molecular representations, thereby achieving an enhanced accuracy generating structures compared with its base models. Aiming highlight significance design strategies advancing discovery water-harvesting MOFs, we conducted systematic variant expansion upon state-of-the-art MOF-303 utilizing multidimensional approach that integrates extension multivariate tuning strategies. synthesized series isoreticular aluminum termed Long-Arm MOFs (LAMOF-1 LAMOF-10), featuring bear various combinations heteroatoms their five-membered ring moiety, replacing pyrazole either thiophene, furan, or thiazole rings combination two. Beyond consistent robust architecture, as demonstrated permanent porosity thermal stability, LAMOF offers generalizable synthesis strategy. Importantly, these 10 LAMOFs establish new benchmarks for water uptake (up 0.64 g g-1) operational humidity ranges (between 13 53%), expanding diversity MOFs.

Язык: Английский

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Construction of Negative Electrostatic Pore Environments in a Scalable, Stable and Low‐Cost Metal‐organic Framework for One‐Step Ethylene Purification from Ternary Mixtures

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(44)

Опубликована: Сен. 12, 2023

One-step separation of C2 H4 from ternary mixtures by physisorbents remains a challenge to combine excellent performance with high stability, low cost, and easy scalability for industrial applications. Herein, we report strategy constructing negative electrostatic pore environments in stable, low-cost, easily scaled-up aluminum MOF (MOF-303) efficient one-step H2 /C2 H6 separation. This material exhibits not only record uptakes, but also top-tier selectivities at ambient conditions. Theoretical calculations combined situ infrared spectroscopy indicate that multiple N/O sites on channels can build electro-environment provide stronger interactions over . Breakthrough experiments confirm its exceptional mixtures, affording one the highest productivity 1.35 mmol g-1 is highly stable be synthesized kilogram-scale cheap raw materials using water-based green synthesis. The benchmark combination properties stability cost scalable MOF-303 has unlocked great potential this challenging

Язык: Английский

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Metal–Organic Frameworks for Water Desalination

Advanced Functional Materials, Год журнала: 2023, Номер 34(43)

Опубликована: Авг. 8, 2023

Abstract Rapid industrialization and ever‐increasing global population culminate in continuous upsurge freshwater crisis worldwide. The most reliable promising solution to this is utilizing sea‐water as the source, desalination technologies pave way for efficient production of from sea‐water. In regard, membrane‐based method comes forth owing its' separation, operational ease, low‐energy consumption. Metal–organic frameworks (MOFs), explored crystalline porous materials, show tremendous promise membrane‐materials their structural diversity, tunability, voids which provide secondary water channels. Given significant advances are made MOF‐materials past few years, it crucial systematically summarize recent progress development field. review, a brief overview various saline systems prerequisites first presented. Then, advanced fabrication strategies MOF‐membranes followed by processes such reverse osmosis forward summarized. Finally, authors’ perspectives on unsolved scientific technical challenges opportunities MOF‐integrated membranes toward real‐world implementation proposed. With further systematic development, an ideal platform next‐generation technology.

Язык: Английский

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Metal-organic frameworks for water vapor adsorption

Chem, Год журнала: 2023, Номер 10(2), С. 484 - 503

Опубликована: Окт. 6, 2023

Язык: Английский

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Selective Etching of Metal–Organic Frameworks for Open Porous Structures: Mass-Efficient Catalysts with Enhanced Oxygen Reduction Reaction for Fuel Cells

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(50), С. 27262 - 27272

Опубликована: Дек. 10, 2023

Fe-Nx-C-based single-atom (SA-Fe-N-C) catalysts have shown favorable oxygen reduction reaction (ORR) activity. However, their application in proton exchange membrane fuel cells is hindered by reduced performance owing to the thick catalyst layer, restricting mass transfer and O2 supply. Metal-organic frameworks (MOFs) are a promising class of crystal materials, but narrow pores exacerbate sluggish mass-transport properties within layer. This study developed an approach for constructing open-pore structure MOFs via chelation-assisted selective etching, resulting atomically dispersed Fe atoms anchored on N, S co-doped carbon framework. The reduces transport resistance electrode assembly (MEA) with unprecedented ORR activity stability, as evidenced finite element simulations. In acidic electrolyte, OP-Fe-NC shows half-wave potential 0.89 V vs RHE, surpassing Pt/C 20 mV, current density 29 mA cm-2 at 0.9 ViR-free MEA. provides effective structural strategy fabricating electrocatalysts high efficiency atomic precision energy storage conversion devices.

Язык: Английский

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