A novel cross-linked nano-coating for carbon dioxide capture

Abstract

Ultra-thin (∼100 nm) films with uniform thicknesses can facilitate high CO₂ permeation and are of potential technological significance for CO₂ capture. Among many approaches for obtaining such materials, the recently developed continuous assembly of polymers (CAP) technology provides a robust process, allowing for the production of defect-free, cross-linked and surface-confined thin films with nanometer scale precision. Through utilization of this nanotechnology, we have constructed composite membranes containing cross-linked ultra-thin surface films. The membrane materials formed exhibited significantly high permeances as well as excellent gas separation selectivity.