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Polymeric Gels for Carbon Dioxide Capture.

Zhaoxin Ji¹, Chen Wang¹, Youhong Guo¹

¹Department of Applied Physical Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, United States.

|June 19, 2026

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Polymeric gels offer a promising solution for large-scale carbon capture, showing high CO2 capacity and energy efficiency. These adaptable materials are key to developing practical carbon mitigation technologies.

Area of Science:

Materials Science
Chemical Engineering
Environmental Science

Background:

Scaling carbon capture technologies to gigaton levels requires advanced sorbent materials.
Existing sorbents (porous solids, liquid amines) have limitations in capacity, selectivity, stability, regeneration energy, or processability.
Polymeric gels represent an emerging class of materials with unique properties for CO2 capture.

Purpose of the Study:

To review recent progress in the molecular design and application of polymeric gels for CO2 capture.
To highlight the advantages of polymeric gels over conventional sorbents.
To discuss challenges and future opportunities for practical carbon mitigation.

Main Methods:

Rational synthesis of polymeric gels with controlled backbones, functional groups, morphologies, and additives.

Keywords:

CO2 capture direct air capture moisture tolerance molecular engineering polymeric gels porous structure renewable energy surface coating

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Molecular design of polymeric networks.

Morphological control from nano- to microscale.

Macroscale device integration (sorption columns, separation membranes).

Integration with renewable energy-driven regeneration systems.

Main Results:

Polymeric gels exhibit high CO2 capacity, selectivity, and stability.
These gels offer low regeneration energy requirements.
Tunable polymer-CO2-H2O interactions and structural versatility are key features.
Demonstrated potential for durable and energy-efficient CO2 capture.

Conclusions:

Polymeric gels are highly tunable and versatile materials for effective CO2 capture.
Integration into devices and renewable energy systems enhances their practical applicability.
Further research is needed to translate these findings into scalable carbon mitigation technologies.