(401z) Novel Mixed Matrix Membrane Using Metal Organic Framework and Graphene Oxide for CO2 separation

The
reduction in CO₂ emissions is very important to mitigate the problem
of global warming and climate change. Membrane technology for CO₂
separation has shown positive results. Solution diffusion and facilitated
transport mechanism are the most important in membrane gas separation. Among
the different types of membranes, mixed matrix membranes (MMM’s) have shown
great potential because they are expected to combine the selectivity of ceramic
membranes with the low cost and ease of manufacture of polymer membranes.
Moreover, the performance of the membranes is governed by two characteristics,
permeability; that is the flux of a specific gas through the membrane, and
selectivity; the membrane’s preference to pass one gas species over the other.

The
overreaching goal of this study is to develop and explore approaches to enhance
the performance of Mixed Matrix Membrane (MMM) by properly modifying the Metal
Organic Frame work (MOF). In this work a octahedral metal-organic framework
UIO-66 with surface area 1680 m²g^–1 is synthesized and
polyetherimide (PEI) has chosen as a matrix .The asymmetric flat sheet of mixed
matrix membrane (MMM) has been fabricated via a dry/wet phase inversion
technique and characterized by thermogravimetric analysis (TGA), differential
scanning calorimetry (DSC), field emission scanning electron microscopic
(FESEM) and pure gas permeation testing. In addition, graphene oxide has
synthesized from graphite powder and have been used as a filler of mixed matrix
membrane to improve the mechanical properties and enhance the sustainable CO₂
capture properties.