Transformation of Al-CDC from 3D crystals to 2D nanosheets in macroporous polyacrylates with enhanced CH4/N2 separation efficiency and stability

Non-CO2 greenhouse gas separation using advanced porous materials

“…10). 135 Al-CDC in the form of 2D sheets has lower mass transfer distance which promotes the CH 4 diffusion. Compared with crystals of Al-CDC, the CH 4 adsorption capacity and CH 4 /N 2 selectivity of Al-CDC@PA have been enhanced.…”

Recent Progress in 2D Metal‐Organic Framework‐Related Materials

“…Feng et al [201] proposed the in situ growth of Al MOF nanosheets on the microporous inner surface of polyacrylate (PA), using trans 1,4-cyclohexane dicarboxylic acid as the ligand. Because the local enrichment of metal ions and organic ligands can induce their high local supersaturation at the liquid-solid interface, the energy barrier is significantly reduced, which promotes the transformation of heterogeneous nucleation of Al-MOF from 3D crystals to 2D nanosheets, forming ultrathin films with higher adsorption efficiency and lower diffusion barrier.…”

Properties of Aliphatic Ligand-Based Metal–Organic Frameworks

“…The absence of strong adsorption centers, as well as the low polarizability of such a core, implies that the adsorption properties of aliphatic MOFs for typical polar or easily polarizable adsorbates can be mainly related to other framework components, for example, open metal cites. However, the inert saturated backbone possesses strong hydrophobicity which could reveal the adsorption properties and selectivity to be drastically different from the conventional adsorption sites [87][88][89]. A strong impact of hydrophobicity on the adsorption properties has been noted even for methyl substituents in typical π-conjugated ligands, which was expressed in a poor or stepped uptake of highly polar substrates, such as water [90][91][92][93] (Figure 13).…”