In this Review we survey the molecular sieving behaviour of metal–organic framework
(MOF) and covalent organic framework (COF) membranes, which is different from that of …

Membrane-based separations have garnered considerable attention owing to their high
energy efficiency, low capital cost, small carbon footprint, and continuous operation mode …

Zeolites and metal–organic frameworks (MOFs) represent an attractive class of crystalline
porous materials that possesses regular pore structures. The inherent porosity of these …

Metal–organic framework (MOF) membranes are energy-efficient candidates for molecular
separations, but it remains a considerable challenge to eliminate defects at the atomic scale …

Covalent organic framework (COF) chemistry is experiencing unprecedented development
in recent decades. The current studies on COF chemistry are mainly focused on the …

Membranes with ultrahigh permeance and practical selectivity could greatly decrease the
cost of difficult industrial gas separations, such as CH4/N2 separation. Advanced …

Mixed-matrix membranes (MMMs) that combine processable polymer with more permeable
and selective filler have potential for molecular separation, but it remains difficult to control …

Mass transport at the sub-nanometre scale, including selective transport of gases, liquids
and ions, plays a key role in systems such as catalysis, energy generation and storage …

Metal–organic frameworks (MOFs), constructed from organic linkers and inorganic building
blocks, are well-known for their high crystallinity, high surface areas, and high component …

Covalent organic frameworks (COFs) are promising materials for advanced molecular-
separation membranes, but their wide nanometer-sized pores prevent selective gas …