BEGIN:VCALENDAR PRODID:-//eluceo/ical//2.0/EN VERSION:2.0 CALSCALE:GREGORIAN BEGIN:VEVENT UID:c8f390f5-0597-48c2-b435-3e989b438c16 DTSTAMP:20261106T111630Z SUMMARY:Green synthesis and engineering of covalent organic frameworks DESCRIPTION:

IN-PERSON EVENT - REGISTER HERE \;to attend

By Assoc. Prof. Chao Xu\,& nbsp\;Department of Materials Science and Engineering\, Uppsala U niversity\, Uppsala\, Sweden

Abstract: \;

Covalent organic frameworks (COFs) are a class of crystalline porous poly mers with broad potential in separation\, catalysis\, energy conversion an d storage\, and sensing. However\, their practical applications remain lim ited by conventional solvothermal synthesis and poor processability. To ad dress these challenges\, we have developed facile\, scalable\, and environ mentally friendly strategies for the synthesis and processing of COFs in a queous media under ambient conditions. Using these approaches\, more than 40 COFs with diverse structures have been synthesized\, exhibiting high cr ystallinity and large specific surface areas. By controlling reaction cond itions and molecular building blocks\, we have further achieved the synthe sis of nanoscale COFs with tunable particle sizes and morphologies\, as we ll as the direct fabrication of mechanically robust\, free-standing COF ge ls and monoliths. These materials have been investigated for applications in molecular separation\, photocatalysis\, and gas sensing. Furthermore\, we have developed a rapid and versatile strategy for fabricating large-are a\, free-standing COF membranes by casting suspensions of molecular precur sors\, followed by thermal treatment under controlled humidity conditions. The resulting membranes exhibit high mechanical strength and large specif ic surface areas. They also demonstrate effective removal of organic conta minants from wastewater through nanofiltration\, as well as efficient H2/CO2 separation. Collectively\, these advances establi sh scalable and sustainable pathways for the synthesis and engineering of COFs\, facilitating their transition from laboratory-scale materials to pr actical applications.

References:

  1. X. Kong\, Z. Wu\, M. Strømme\, C. Xu\, J. Am. Chem. Soc.\, 2024\, 146\, 1\, 742.
  2. X. Kong\, S. Afewerki\, Y. Pa n\, P. Huang\, C. Xu\, Angew. Chem. Int. Ed.\,2026\, 65\,&nbs p\;e23595.
  3. Y. Pan\, X. Kong\, S. Afewerki\, C. Xu\, Angew. \;Chem. Int. E d.\, 2026\, 65\, \;e2684732.
  4. M. Åhlén\, X. Kong\, W. Zhao\, F. Zam ora\, C. Xu\, Angew. Chem. Int. Ed.\, 2025\, 64\, e202425426.
  5. K. Eliasson\, F . Jiang\, M. Åhlén\, M. Strømme\, C. Xu\, \;J. Am. Chem. Soc.\, 2025\, 147\, 32\, 29271.

Hosted by \;ICREA Prof. Daniel Maspoch

DTSTART:20261119T110000 DTEND:20261119T130000 LOCATION:ICN2 Seminar Room CATEGORIES:ICN2 Seminars END:VEVENT END:VCALENDAR