Climate change due to anthropogenic CO2 emissions represents one of the most profound environmental disasters of this century. Equipping power plants with carbon capture and storage technology has the potential to reduce current worldwide CO2 emissions. Within this field, thin film composite (TFC) membranes, capable of handling large volume gas flux and continuous operation, represent an alternative for CO2 capture with lower energy demands than conventional amine-scrubbing methods.1-2 Herein, we provide an overview of our recent development of high-performance TFC membrane materials either using polymer&MOF as a selective layer or as a gutter layer. More specifically, incorporating PEG modified MOF nanoparticle into the selective layer yields major improvements in CO2 permeance without loss of selectivity.3 Then, the development of enhanced gutter layers employing two- and three-dimensional metal−organic framework materials leads to considerable improvements in both CO2 permeance and selectivity compared with traditional poly(dimethylsiloxane) materials.4-5 Alternative strategies are also emerging, whereby the selective layer and gutter layer may be combined for enhanced membrane efficiency.6 Finally, we will also show the latest breakthroughs in the fabrication of TFC membranes using polymer of intrinsic porosity (PIM) and MOF materials as a selective layer.7-8

Postcombustion carbon capture using polymer-MOF thin-film composite membranes

ACS Spring Meeting 2021

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