The effect of adding carbon nanotubes to 3D graphene on the adsorption of DMMP from airflow

Environmental pollution and release of toxic substances, especially chemical warfare agents, is one of the most dangerous threats to human life. One of the measures taken to face this threat is the use of adsorbent filters. Therefore, research to prepare suitable adsorbent material is very important. Currently, carbon adsorbents, especially activated carbon, are the most widely used in commercial filters. However, research continues to improve adsorbent performance and develop new materials. 3D graphene and carbon nanotubes are the materials whose efficiency has been investigated in the adsorption of organic substances. In this research, the combination of 3D graphene with carbon nanotubes was made to adsorb dimethyl methylphosphonate from airflow. To compare the performance of 3D graphene/ carbon nanotube with commercial activated carbon, the breakthrough curves were experimentally obtained and fitted with the Ion-Nelson model. The results showed that the addition of carbon nanotubes to 3D graphene improved the breakthrough time and dynamic adsorption capacity. These parameters have increased by 33.5 and 39 % respectively compared to commercial activated carbon.