CO₂ Adsorption on Pore-Engineered Carbons Derived from Jute Sticks

Area of Science:

• Materials Science
• Environmental Science
• Chemical Engineering

Background:

• Carbon capture is crucial for mitigating global warming.
• Adsorption-based methods offer a clean and energy-efficient approach to CO2 capture.
• Adsorbent performance is highly dependent on material design and properties.

Purpose of the Study:

• To investigate jute-derived carbon as a high-performance adsorbent for CO2 capture.
• To optimize the synthesis of jute-derived carbon for enhanced CO2 adsorption.
• To evaluate the potential of these materials for practical CO2 separation processes.

Main Methods:

• Jute sticks were pyrolyzed with sodium bicarbonate (NaHCO3) at 500-700°C to produce carbon adsorbents.
• Adsorbent properties were tuned by controlling pore size distribution and surface functionalization.
• Materials were characterized using XRD, FTIR, Raman, FESEM, and N2 sorption at 77 K.
• CO2 adsorption isotherms were measured to determine capacity and selectivity.

Main Results:

• Jute-derived carbons exhibited high CO2 adsorption capacities, up to 2.5 mmol·g⁻¹.
• Excellent CO2/N2 selectivities, reaching up to 54, were achieved.
• Optimized pore structure and surface chemistry were key to performance.
• Working capacities and regenerability were assessed for vacuum swing adsorption.

Conclusions:

• Jute-derived carbon is a promising, sustainable material for efficient CO2 capture.
• Tailoring pore size and surface functionalization significantly enhances adsorbent performance.
• This approach offers a viable pathway for designing advanced adsorbents for gas separation applications.