Developing Eco-Friendly and Cost-Effective Porous Adsorbent for Carbon Dioxide Capture

Area of Science:

• Materials Science
• Environmental Chemistry
• Chemical Engineering

Background:

• Global warming necessitates effective carbon dioxide (CO2) capture technologies.
• Metal-doped polymers are explored for CO2 capture, but synthesis scalability remains a challenge.

Purpose of the Study:

• To synthesize scalable, mesoporous metal-doped polymers (MRFs) for efficient CO2 capture.
• To investigate the impact of polymer composition and metal doping on CO2 adsorption.

Main Methods:

• One-step solvothermal copolymerization of resorcinol and formaldehyde with Polyethyleneimine (PEI).
• Tuning PEI and metal doping concentrations to control porosity and functionality.
• Characterization of physical properties and CO2 adsorption performance.

Main Results:

• Successfully synthesized mesoporous metal-doped polymers with tunable properties.
• PEI incorporation enhanced mesoporosity, surface area, and CO2 capture capacity.
• Cobalt-doped MRFs exhibited excellent thermal stability and adsorbed 2.3 mmol CO2/g at 0 °C and 1 bar.

Conclusions:

• The developed mesoporous polymers offer a scalable and efficient route for CO2 capture.
• The materials show potential for subsequent electrochemical conversion of captured CO2.
• This research provides a promising candidate for mitigating climate change through CO2 capture.