Designing Triazine-Based Aminal-Linked Porous Organic Polymers for Efficient CO₂ Capture and Conversion

Area of Science:

• Materials Science
• Environmental Chemistry
• Catalysis

Background:

• Rising atmospheric carbon dioxide (CO2) levels drive global warming and climate change.
• Developing efficient porous nanomaterials for simultaneous CO2 capture and conversion is crucial.

Purpose of the Study:

• Synthesize and characterize nitrogen-rich porous organic polymers (POPs).
• Evaluate their performance in CO2 adsorption and catalytic conversion.

Main Methods:

• Schiff-base condensation under solvothermal conditions to synthesize POPs (TBAL-POP-3, -4, -5).
• Gas adsorption analysis (CO2 uptake, N2 selectivity) at various temperatures.
• Catalytic testing for amine formylation using CO2 as a C1 source.

Main Results:

• TBAL-POP-5 exhibited high surface area (1053 m2 g-1) and mesoporosity (84%).
• TBAL-POP-5 demonstrated high CO2 uptake (1.92 mmol g-1) and CO2/N2 selectivity.
• The POPs showed catalytic activity in converting CO2 into value-added chemicals.

Conclusions:

• Nitrogen-rich POPs, particularly TBAL-POP-5, are effective for CO2 capture and catalytic valorization.
• Mesopore-enriched structures enhance gas adsorption and mass transfer.
• These materials offer a dual-function platform for integrated CO2 capture and utilization.