Nanomaterials improving CO 2 removal efficiency in membranes: A systematic review

Separation processes with membranes stand out in applications for removing CO 2 from gaseous mixtures due to industrial, environmental and energy demands. The membrane must then be designed to allow high gas flow, high selectivity and chemical and mechanical stability under operating conditions of feed composition, pressure and temperature. Hybrid materials based on carbon materials - carbon nanotubes and graphene oxide - and polymers - cellulose acetate, polyamide, polyimide and polyether block amide - are presented as new types of studied membranes that present promising results in gas separation. An attempt to study a systematic analysis was carried out and despite not achieving adequate results in the literature, it is possible to infer a potential application of carbon nanotubes and graphene oxide in polymeric matrix as nanofillers that improve CO 2 removal