Carbon Dioxide Capture Technologies and Applications

Carbon dioxide capture encompasses a suite of approaches designed to separate CO₂ from point sources or the atmosphere, thereby mitigating greenhouse-gas emissions and enabling carbon reuse or permanent storage. Capture methods are broadly classified as pre-combustion, post-combustion and oxy-fuel combustion in industrial and power-generation settings, alongside emerging routes such as chemical looping, adsorption-based systems and direct air capture. Advances in solvent development, solid sorbents and membrane materials have driven gains in selectivity, capacity and energy efficiency. Electrochemical techniques further offer decentralised flexibility and potential integration with renewable electricity for pH-swing capture. Once separated, CO₂ may be transported by pipeline, ship or truck for geological sequestration in saline aquifers, depleted hydrocarbon reservoirs or mineral formations, or it may be converted into fuels, chemicals and building materials. Applications span decarbonisation of power and heavy industry, negative-emission solutions via bioenergy with carbon capture, and circular-economy pathways through utilisation. The global deployment of capture technologies is critical to achieving climate targets, with current research focusing on lowering energy penalties, reducing costs, improving material stability and designing integrated capture–utilisation systems for scalable, cost-effective carbon management.

Research from Nature Portfolio

Recent studies have demonstrated that nanostructured titanium hydroxide catalysts can accelerate CO₂ desorption from spent amine solvents by over 4,000%, enabling regeneration at significantly lower temperatures. This catalytic advance reduces the thermal energy demand and solvent degradation associated with conventional amine scrubbing, while maintaining cyclic stability over dozens of capture–release cycles. The discovery opens pathways for more energy-efficient post-combustion systems and suggests a general strategy for catalytic enhancement of solvent-based capture processes.

Research from all publishers

Electrochemical pH-swing systems have emerged as a versatile route to capture CO₂ from dilute streams, exploiting reversible redox or membrane electrodialysis processes to shift the pH of aqueous solutions and bind or release CO₂ on demand. These methods promise modular deployment and direct conversion of captured CO₂ into value-added chemicals when coupled with suitable electrodes. A techno-economic review of carbon capture, utilisation and storage pathways has mapped the readiness levels, energy requirements and cost drivers for industrial separation, post- and pre-combustion capture, oxy-fuel and direct air capture, as well as transport and storage options, underlining the need for hybrid systems to balance performance and economics. Concurrent surveys of modern capture methods—including chemical looping, calcium looping, adsorption, membranes and cryogenic techniques—highlight the trade-offs between capture efficiency, energy penalty and scalability, and point to process intensification and material innovation as key to bridging the gap between pilot-scale demonstrations and commercial deployment.

Carbon Dioxide Capture Technologies and Applications publication trend

The graph below shows the total number of articles in carbon dioxide capture technologies and applications across all publications each year (not limited to Nature Index journals).

Technical terms

Pre-combustion capture: Removal of CO₂ after fuel conversion to a hydrogen-rich syngas, typically via gasification and shift reactions.

Post-combustion capture: Separation of CO₂ from flue gas after combustion, often using chemical solvents or sorbents.

Oxy-fuel combustion: Burning fuel in pure oxygen or oxygen-enriched air to produce a CO₂-rich flue stream that simplifies capture.

Direct air capture: Technologies that extract CO₂ directly from ambient air, enabling negative-emission potential.

Adsorption: Capture of CO₂ on the surface of solid materials such as zeolites, metal–organic frameworks or activated carbon.

Absorption: Uptake of CO₂ into a liquid solvent, commonly aqueous amines, involving chemical or physical interactions.

pH-swing: Electrochemically or chemically driven cycles that change solution pH to alternate CO₂ uptake and release.

Carbon utilisation: Conversion of captured CO₂ into fuels, chemicals, minerals or other products, closing the carbon loop.

References

1. An overview of current status of carbon dioxide capture and storage technologies. Renewable and Sustainable Energy Reviews (2014).
2. Recent advances in carbon capture storage and utilisation technologies: a review. Environmental Chemistry Letters (2020).
3. Carbon Capture From Flue Gas and the Atmosphere: A Perspective. Frontiers in Energy Research (2020).
4. Catalyst-TiO(OH)2 could drastically reduce the energy consumption of CO2 capture. Nature Communications (2018).
5. Electrochemical carbon dioxide capture to close the carbon cycle. Energy & Environmental Science (2021).
6. A techno-economic review on carbon capture, utilisation and storage systems for achieving a net-zero CO2 emissions future. Carbon Capture Science & Technology (2022).
7. Methods and Techniques for CO2 Capture: Review of Potential Solutions and Applications in Modern Energy Technologies. Energies (2022).