Composite material for gas adsorption separation and preparation method thereof

The invention provides a composite material for gas adsorption separation and a preparation method thereof, and relates to the technical field of gas adsorption separation. The invention discloses a composite material for gas adsorption separation. The composite material comprises a porous polymer carrier and MOFs (Metal-Organic Frameworks) crystals loaded in the porous polymer carrier, the MOFs crystal is obtained by placing the porous polymer carrier with a built-in load raw material in a solvent and carrying out in-situ growth; the load feedstock includes a metal source. The preparation method comprises the following steps: mixing a porous polymer carrier oil phase and a built-in load raw material water phase in a water-based system, and carrying out a first reaction; and putting a product obtained by the first reaction into the solvent, and carrying out a second reaction, thereby obtaining the product. According to the preparation method, a metal source for synthesizing MOFs is built in before polymerizat