Mesh-shaped porous co2-capturing solution and separation method for co2 gas

A mesh-shaped porous CO2-capturing solution, comprising 1%-50% of a specific chemical agent, and 50%-99% of water, with respect to 100% of the total mass of the capturing solution;

• wherein the specific chemical agent is one or a combination of two or more of an imidazole-based substance, an imidazole-based ionic liquid, a piperazine-based substance, and an alcohol amine-based substance;
• wherein the imidazole-based ionic liquid includes one or a combination of two or more of 1-butyl-3-methyl imidazolium tetrafluoroborate, 1-hexyl-3-methyl imidazolium tetrafluoroborate, 1-hexyl-3-methyl imidazolium hexafluorophosphate, 1-ethyl-3-methyl imidazolium chloride, and 1-ethyl-3-methyl imidazolium bis(trifluoromethanesulfonyl)imide;
• wherein the alcohol amine-based substance includes one or a combination of two or more of 2-amino-2-methyl-1-propanol, hydroxyethyl ethylenediamine, and triethanolamine;
• and
• wherein the specific chemical agent forms a mesh-shaped porous structure in water.