<p>Global carbon dioxide emissions continue to rise, exacerbating the greenhouse effect. The imperative for carbon capture and storage of CO₂ is pressing. Membrane separation technology, an efficacious approach for capture and separation CO₂ from gas mixture, presently finds application in diverse domains such as water purification, food processing, pharmaceuticals and beyond. Using membrane separation technology can effectively separate CO₂ and reduce environmental pollution. Recently, graphene has developed into a common material for the manufacture of CO₂ separation membranes, which exhibit excellent properties and interesting gas transport phenomena. This paper showcases the recent advancements and outcomes achieved in the domain of CO₂ separation through the utilization of graphene-based membranes. It accomplishes this by summarizing the diverse synthesis methods employed in making mixed matrix membranes enriched with graphene as a filler. Furthermore, it highlights the notable advantages offered by graphene as a filler in the context of mixed matrix membranes, thoroughly analyzes the characterization data pertaining to these mixed matrix membranes and evaluates the gas separation performance exhibited by mixed matrix membranes featuring various polymer compositions. Ultimately, this paper serves as a valuable reference for researchers aiming to delve into the study and application of this particular variant of mixed matrix membrane.</p>