Porous acid-base hybrid polymers for enhanced NH₃ uptake with assistance from cooperative hydrogen bonds.

ABSTRACT: Carboxylic acid-modified materials are a common means of achieving efficient NH₃ adsorption. In this study, we report that improved NH₃ adsorption capacity and easier desorption can be achieved through the introduction of substances containing Lewis basic groups into carboxylic acid-modified materials. Easily synthesized mesoporous acid-base hybrid polymers were constructed with polymers rich in carboxylic acid and Lewis base moieties through cooperative hydrogen bonding interactions (CHBs). The hybrid polymer PAA-P4VP presented higher NH₃ capacity (18.2 mmol g^-1 at 298 K and 1 bar NH₃ pressure) than PAA (6.0 mmol g^-1) through the acid-base reaction and the assistance from CHBs with NH₃, while the NH₃ d

SUBMITTER: Luo X 

PROVIDER: S-EPMC10543883 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature