Calcium-based metal-organic framework material, method for making the same, and use in carbon dioxide capture

A calcium-based metal-organic framework material, wherein:

• the calcium-based metal-organic framework material is a porous material with a three-dimensional framework structure formed by self-assembly coordination of a metal ion Ca2+ and an organic ligand 2,5-pyrazinedicarboxylic acid;
• a structural formula of the 2,5-pyrazinedicarboxylic acid is:
• the three-dimensional framework structure is formed by a coordination bond between a one-dimensional calcium chain and a nitrogen atom and an oxygen atom in the organic ligand;
• and
• the one-dimensional calcium chain is provided with a broken line shape, and comprises a plurality of mononuclear calcium nodes;
• and each of the plurality of mononuclear calcium nodes is provided with an eight-coordinated mode;
• wherein from a perspective of skeleton connection construction, when a porous channel of the calcium-based metal-organic framework material is provided with an acetonitrile guest molecule, a crystal structure of the calcium-based metal-organic framework material belongs to a monoclinic system, a space group is C2/c, and unit cell parameters comprises:
• a=9.0894(3) Å, b=16.5853(5) Å, c=5.8655(2) Å, α=γ=90°, β=92.184(3)°.