Engineering HOF-Based Mixed-Matrix Membranes for Efficient CO2 Separation

Abstract

Highlights For the first time, the hydrogen-bonded organic frameworks (HOFs)-based mixed-matrix membranes were designed for CO2 separation A size-controllable method for synthesis of HOF-21 nanoparticles was proposed via diethylamine-modulated framework assembly process The HOF-21 mixed-matrix membranes exhibited outstanding separation performance with PCO2 of ~ 800 Barrer, and SCO2/CH4 of ~ 40, SCO2/N2 of ~ 60, surpassing the 2008 Robosen upper bound.

Keywords

• Hydrogen-bonded organic framework
• Tunable size
• Mixed-matrix membrane
• Mixed-bond
• Carbon capture