Journal ArticleDOI
Selective gas adsorption and separation in metal–organic frameworks
TLDR
This critical review starts with a brief introduction to gas separation and purification based on selective adsorption, followed by a review of gas selective adsorbents in rigid and flexible MOFs, and primary relationships between adsorptive properties and framework features are analyzed.Abstract:
Adsorptive separation is very important in industry. Generally, the process uses porous solid materials such as zeolites, activated carbons, or silica gels as adsorbents. With an ever increasing need for a more efficient, energy-saving, and environmentally benign procedure for gas separation, adsorbents with tailored structures and tunable surface properties must be found. Metal–organic frameworks (MOFs), constructed by metal-containing nodes connected by organic bridges, are such a new type of porous materials. They are promising candidates as adsorbents for gas separations due to their large surface areas, adjustable pore sizes and controllable properties, as well as acceptable thermal stability. This critical review starts with a brief introduction to gas separation and purification based on selective adsorption, followed by a review of gas selective adsorption in rigid and flexible MOFs. Based on possible mechanisms, selective adsorptions observed in MOFs are classified, and primary relationships between adsorption properties and framework features are analyzed. As a specific example of tailor-made MOFs, mesh-adjustable molecular sieves are emphasized and the underlying working mechanism elucidated. In addition to the experimental aspect, theoretical investigations from adsorption equilibrium to diffusion dynamics via molecular simulations are also briefly reviewed. Furthermore, gas separations in MOFs, including the molecular sieving effect, kinetic separation, the quantum sieving effect for H2/D2 separation, and MOF-based membranes are also summarized (227 references).read more
Citations
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Journal ArticleDOI
Extending the Use of Highly Porous and Functionalized MOFs to Th(IV) Capture.
TL;DR: This study contributes to the assessment of the feasibility of MOFs applied in actinides separation and better understanding of actinide sorption behavior in this kind of hybrid porous solid materials.
Journal ArticleDOI
Integration of Enzymes and Photosensitizers in a Hierarchical Mesoporous Metal-Organic Framework for Light-Driven CO2 Reduction.
Yijing Chen,Peng Li,Jiawang Zhou,Cassandra T. Buru,Luka Đorđević,Penghao Li,Xuan Zhang,M. Mustafa Cetin,J. Fraser Stoddart,J. Fraser Stoddart,J. Fraser Stoddart,Samuel I. Stupp,Michael R. Wasielewski,Omar K. Farha +13 more
TL;DR: A semi- artificial system - containing an immobilized enzyme, formate dehydrogenase, in a light harvesting scaffold - is reported for the conversion of CO2 to formic acid using white light, demonstrating of a feasible pathway for solar-driven carbon fixation.
Journal ArticleDOI
Ordered Mesoporous Metal–Organic Frameworks Incorporated with Amorphous TiO2 As Photocatalyst for Selective Aerobic Oxidation in Sunlight Irradiation
Sedigheh Abedi,Ali Morsali +1 more
TL;DR: In this article, a simple procedure for preparation of ordered mesoporous domains has been developed using nonionic block copolymer in DMF as the solvent, which has been thoroughly characterized by FTIR, FESEM, HRTEM, XRPD, EDS, and TG analysis.
Journal ArticleDOI
Molecular Insight into the Adsorption and Diffusion of Water in the Versatile Hydrophilic/Hydrophobic Flexible MIL-53(Cr) MOF
Fabrice Salles,Sandrine Bourrelly,Hervé Jobic,Thomas Devic,Vincent Guillerm,Philip L. Llewellyn,Christian Serre,Gérard Férey,Guillaume Maurin +8 more
TL;DR: In this article, a combination of molecular simulations (Grand Canonical Monte Carlo and molecular dynamics) and experimental techniques (quasi-elastic neutron scattering and gravimetry/volumetry) allows a complete elucidation of the adsorption and diffusion mechanisms in play in this structure.
Journal ArticleDOI
Selective Separation of Water, Methanol, and Ethanol by a Porous Coordination Polymer Built with a Flexible Tetrahedral Ligand
TL;DR: A novel porous coordination polymer, Cu(II)(mtpm)Cl(2) [mtpm = tetrakis(m-pyridyloxy methylene)methane], has been synthesized, and its crystal structure has been determined.
References
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Journal ArticleDOI
Functional porous coordination polymers.
TL;DR: The aim is to present the state of the art chemistry and physics of and in the micropores of porous coordination polymers, and the next generation of porous functions based on dynamic crystal transformations caused by guest molecules or physical stimuli.
Journal ArticleDOI
Reticular synthesis and the design of new materials
Omar M. Yaghi,Michael O'Keeffe,Nathan W. Ockwig,Hee K. Chae,Hee K. Chae,Mohamed Eddaoudi,Jaheon Kim +6 more
TL;DR: This work has shown that highly porous frameworks held together by strong metal–oxygen–carbon bonds and with exceptionally large surface area and capacity for gas storage have been prepared and their pore metrics systematically varied and functionalized.
Journal ArticleDOI
Design and synthesis of an exceptionally stable and highly porous metal-organic framework
TL;DR: In this article, an organic dicarboxylate linker is used in a reaction that gives supertetrahedron clusters when capped with monocarboxyates.
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From molecules to crystal engineering: supramolecular isomerism and polymorphism in network solids.
Journal ArticleDOI
Hybrid porous solids: past, present, future
TL;DR: The state-of-the-art on hybrid porous solids, their advantages, their new routes of synthesis, the structural concepts useful for their 'design', aiming at reaching very large pores are presented.