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
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Recent advances in colloidal photonic crystal sensors: Materials, structures and analysis methods
Jue Hou,Mingzhu Li,Yanlin Song +2 more
TL;DR: In this article, the authors summarize the recent advances of colloidal photonic crystal (PC) sensors from aspects of materials, structures, and analysis methods, to exhibit the diverse developing strategies.
Journal ArticleDOI
Novel metal–organic framework linkers for light harvesting applications
TL;DR: In this paper, conjugated organic linkers are proposed to form the same one-dimensional infinite metal-oxide secondary building units (SBUs) as the well-known IRMOF-74.
Journal ArticleDOI
Versatile, High Quality and Scalable Continuous Flow Production of Metal-Organic Frameworks
Marta Rubio-Martinez,Michael P. Batten,Anastasios Polyzos,Keri-Constanti Carey,James I. Mardel,Kok-Seng Lim,Matthew R. Hill +6 more
TL;DR: Continuous flow chemistry can be adapted as a versatile route to a range of MOFs, by emulating conditions of lab-scale batch synthesis, which delivers ready synthesis of three different MOFs with surface areas that closely match theoretical maxima.
Journal ArticleDOI
A solid solution approach to 2D coordination polymers for CH4/CO2 and CH4/C2H6 gas separation: equilibrium and kinetic studies
TL;DR: In this article, the gas separation properties of flexible 2D porous coordination polymers under equilibrium gas conditions and mixed gas flow conditions were investigated, and the flexibility of ligand base solid solution compounds was tuned by precise tuning of the flexibility.
Journal ArticleDOI
Post-synthetic reversible incorporation of organic linkers into porous metal-organic frameworks through single-crystal-to-single-crystal transformations and modification of gas-sorption properties.
TL;DR: The post-synthetic modification of SNU-30 by the insertion of 3,6-di(4-pyridyl)-1,2,4,5-tetrazine (bpta) affords single-crystallineSNU-31 SC, demonstrating that the gas adsorption properties of MOF can be modified by post-Synthetic insertion/removal of a bridging ligand.
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.
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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.