Jul 20, 2021 · The nanosheets were assembled into ultrathin two-dimensional membranes with staggered stacking patterns, respectively. Taking advantage of narrowed pore size and CO 2-philic adsorption, these single-phase COF nanosheet membranes were characterized by superior CO 2 /H 2 separation performances.

Dec 10, 2024 · Here, we report a high-performance 2D COF membrane with narrowed channels (0.7 × 0.4 nm 2) and excellent mechanical performance constructed by the staggered stacking of cationic and anionic 2D COF nanosheets for selectively sieving of …

Mar 26, 2024 · Covalent organic frameworks (COFs) have been utilized as the ideal candidates to preciously construct electrocatalysts. However, the highly ordered degree of COFs renders the catalytic centers closely stacked, which limits the utilization efficiency of catalytic sites.

Nov 7, 2023 · A phosphine-amine-linked two-dimensional COF crystallizes via a nucleophilic substitution reaction of phosphazene with amines, featuring an opposite staggered stacking of the interlocked dual layer in a unit cell.

Oct 22, 2020 · For the latter, staggered (a vertex of one pore is above the elevated pore opening), alternating or unidirectional stacking types are distinguished. In addition to these ordered modes, random...

Jan 1, 2022 · This section mainly discusses the current progress on the strategies of pore regulation for COF membranes, such as staggered stacking, hybridization and so forth, and also elucidates their basic thinking and key features.

Jun 21, 2021 · Herein, three COF isomers with different stacking models (eclipsed AA, staggered AB, and ABC stacking) were obtained by modulating the reaction temperature and solvent medium.

Aug 23, 2021 · Herein, three kinds of high-quality β-ketoenamine-type COF nanosheets with different pore sizes were developed and aggregated to ultrathin nanosheet membranes with distinctive staggered stacking patterns.

Sep 1, 2024 · Here, we present a mixed-dimensional strategy of growing three-dimensional (3D) COFs on 2D COFs to build bilayered membranes for efficient organic solvent nanofiltration (OSN). The pores of 3D COFs interlace with those of 2D counterparts, resulting in a …

Nov 2, 2020 · Mono- or few-layer sheets of covalent organic frameworks (COFs) represent an attractive platform of two-dimensional materials that hold promise for tailor-made functionality and...