Metal‐Organic Frameworks for Greenhouse Gas Applications

Abstract

Using petrol to supply energy for a car or burning coal to heat a building generates plenty of greenhouse gas (GHG) emissions, including carbon dioxide (CO2), water vapor (H2O), methane (CH4), nitrous oxide (N2O), ozone (O3), fluorinated gases. These up‐and‐coming metal‐organic frameworks (MOFs) are structurally endowed with rigid inorganic nodes and versatile organic linkers, which have been extensively used in the GHG‐related applications to improve the lives and protect the environment. Porous MOF materials and their derivatives have been demonstrated to be competitive and promising candidates for GHG separation, storage and conversions as they shows facile preparation, large porosity, adjustable nanostructure, abundant topology, and tunable physicochemical property. Enormous progress has been made in GHG storage and separation intrinsically stemmed from the different interaction between guest molecule and host framework from MOF itself in the recent five years. Meanwhile, the use of porous MOF materials to transform GHG and the influence of external conditions on the adsorption performance of MOFs for GHG are also enclosed. In this review, it is also highlighted that the existing challenges and future directions are discussed and envisioned in the rational design, facile synthesis and comprehensive utilization of MOFs and their derivatives for practical applications.

Probing Structural Transformations and Degradation Mechanisms by Direct Observation in SIFSIX-3-Ni for Direct Air Capture

“…Organic-inorganic hybrid materials have shown great potential in the capture of CO 2 . Metal–organic frameworks (MOFs) in particular have shown great promise for DAC applications, even on a pilot plant scale with sorbent-adsorbent cycles. − This is due to several factors, namely, attributed to their scaffold of metal nodes, ions, or cluster, interlinked by organic molecules which allows for interstitial voids within a crystalline framework, enabling a great variety of chemistry in the pores and channels . The exceptional porosity and surface area allow for a high-capacity capture of many gases (and greenhouse gases). − The structural diversity of these framework materials also enables fine-tuning of pore size and apertures which, in turn, allows for design of selective gas capture materials .…”

Rapid Fabrication of High‐Permeability Mixed Matrix Membranes at Mild Condition for CO2 Capture

“…Mixed matrix membranes (MMMs) integrate the distinct features of inorganic fillers (molecular separation, stability, and superior gas transport) and polymers (processability and flexibility), which are thus recognized as a smart solution for the construction of high‐performance and stable gas‐separation membranes. [ 5 ] Metal‐organic framework (MOF) nanoparticles, endowed with narrow pore windows, designable structural features, and tunable chemical components, [ 6 ] are broadly employed as ideal fillers to boost the separation performance of MMMs via straightforward mixing of the synthesized MOF into polymer matrix. [ 7 ] Although promising for large‐scale manufacture, fabrication of defect‐free membranes, the key quality factor for precise separation, is still challenging due to the poor interfacial compatibility and nanoparticle aggregation problems.…”

Efficient capture and separation of CO2‐Boosted carbon neutralization enabled by tailorable metal‐organic frameworks: A review

“…From the perspective of gas separation, carbon capture technologies can be classified into the following three types. [10][11][12] (1) Chemical or quasi-chemical absorption methods. [13][14][15][16] The alkanolamine process is used to selectively absorb CO 2 by forming an N-C bond between the amine and CO 2 to achieve chemical adsorption.…”

“…From the perspective of gas separation, carbon capture technologies can be classified into the following three types 10–12 . (1) Chemical or quasi‐chemical absorption methods 13–16 .…”