Breakthrough in Carbon Capture Technology: Nanocrystals Show Promising Results

Researchers at the National Research Council of Canada have made a significant discovery in the field of carbon capture technology, utilizing nanocrystals to improve the performance of membranes used in carbon dioxide capture. The team's innovative approach focuses on creating a novel defect-engineered ultrasmall cellulose nanocrystal (CNC)-templated UiO-66 MOF (CNC-UiO-66 hybrid), which demonstrated a remarkable CO2 permeability of 1442 Barrer and a selectivity of 40, surpassing the Robeson upper bound for CO2/N2 separation. This breakthrough has the potential to reduce carbon capture costs to 62 USD per tonne, making it a more cost-effective solution.

Key Takeaways:

• The research team, led by Xinyu Wang, utilized a novel defect-engineered ultrasmall CNC-templated UiO-66 MOF hybrid to improve the performance of Pebax membranes for carbon dioxide capture.
• The innovative approach created extended facilitated transport channels for CO2 and enhanced coordination interactions with both CO2 and the polymer matrix, resulting in increased crystallinity and thermal stability.
• The incorporation of as little as 1 wt% of the CNC-UiO-66 hybrid into Pebax membranes achieved a remarkable CO2 permeability of 1442 Barrer and a selectivity of 40.
• The research concluded that these results highlight the potential of CNC-UiO-66 hybrid membranes for efficient and cost-effective CCUS applications, particularly in flue gas treatment.
• The team's findings demonstrated that the CNC-UiO-66 hybrid membranes could reduce carbon capture costs to 62 USD per tonne, 10 USD less than conventional membranes.

Statistics:

• CO2 permeability: 1442 Barrer
• Selectivity: 40
• Carbon capture costs: 62 USD per tonne
• Reduction in carbon capture costs: 10 USD per tonne compared to conventional membranes
• Robeson upper bound for CO2/N2 separation: Surpassed by the CNC-UiO-66 hybrid membranes

Sources:

• NewsRx. Research Findings from National Research Council of Canada Update Understanding of Nanocrystals (Ultra-small defect-engineered UiO-66 on cellulose nanocrystal template for advanced carbon dioxide capture membrane). Life Science Weekly. July 8, 2025; p 4552
• Wang, X., Seyedpour, S. F., Hrapovic, S., Hemraz, U. D., Mozafari, M., Soroush, M., Islam, M. A., Mollahosseini, A., Sadrzadeh, M., & Cho, J. Y. (2025). Ultra-small defect-engineered UiO-66 on cellulose nanocrystal template for advanced carbon dioxide capture membrane. Cleaner Engineering and Technology, 27(), 100999.