Sub-Angstrom Level Pore-Size Tuning in Porous Carbon Materials through Single-Step Carbonization of Precursors Rationally Designed through π-Conjugation Extension
Abstract
Precise tuning of pore sizes in porous carbon materials at the sub-angstrom level remains a challenging task, mainly because of the uncontrollable structural rearrangement during high-temperature carbonization. Here, we report the design and synthesis of porous carbon materials derived from planar triazine-based precursors. These precursors inherently exhibit two-dimensional architectures, which translate into the formation of sheet-like porous carbon materials. Notably, thermal cross-linking of the precursors prior to carbonization enables precise sub-angstrom pore size tuning (4.01 Å → 4.28 Å → 4.56 Å) through systematic extension of the p -phenylene linkages. Among the obtained porous carbon materials, the porous carbon material with precisely tuned 4.56 Å pores showed high CO 2 /CH 4 selectivity.
Fields of Study & Subjects
Covalent Organic Framework Applications
Supercapacitor Materials and Fabrication
Carbon dioxide utilization in catalysis
Publication details
- Journal / source
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Volume
- 42
- Issue
- 2
- Pages
- 2056–2064
- Publication date
- 5 January 2026
- Language
- EN