Enhanced capture structures for direct air capture

An enhanced capture structure, comprising:

• a sorbent structure comprising a first CO2 sorbent material having a second density and a support material having a first density greater than the second density;
• wherein the sorbent structure further comprises a first surface and a second surface opposite the first surface;
• wherein the support material is a tessellation of polygons forming polygonal conduits passing from the first surface to the second surface, each conduit comprising the first CO2 sorbent material;
• and
• wherein the support material is a second CO2 sorbent material.

An enhanced capture structure, comprising:

• a sorbent structure comprising a first CO2 sorbent material having a second density and a support material having a first density greater than the second density;
• wherein the sorbent structure further comprises a first surface and a second surface opposite the first surface;
• wherein the support material is a tessellation of polygons forming polygonal conduits passing from the first surface to the second surface, each conduit comprising the first CO2 sorbent material;
• and
• a plurality of barriers extending outward from the sorbent structure, each barrier of the plurality of barriers sized and positioned such that as an airflow passes along the sorbent structure and over the barrier a high pressure region forms proximate the sorbent structure on a first side of the barrier facing into the airflow and a low pressure region forms proximate the sorbent structure on a second side of the barrier facing away from the airflow, opposite the first side;
• wherein the plurality of barriers comprises a first set of barriers extending outward from the first surface of the sorbent structure and a second set of barriers extending outward from the second surface of the sorbent structure, the first set of barriers and the second set of barriers staggered such that the airflow creates a plurality of high pressure regions and a plurality of low pressure regions proximate the sorbent structure, where each high pressure region formed proximate one of the first surface and the second surface of the sorbent structure is opposite a low pressure region formed on the other of the first surface and the second surface of the sorbent structure, creating a pressure differential that promotes CO2 mass transfer into the first sorbent material via convection through the sorbent structure.