Mesh-like structure integrated core-shell-shell nanocomposites for enhanced stability and performance in carbon capture.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41298365.
- Also identified by DOI 10.1038/s41467-025-65531-3 and PMC identifier 12658231.
- Licence recorded as CC BY-NC-ND.
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Abstract
Carbon capture is essential for mitigating climate change, yet most sorbents struggle to combine high capacity with chemical stability. Here we report core-shell-shell (CSS) nanocomposites that integrate adsorption efficiency with exceptional robustness. The design couples a metal-organic framework (MOF) core, which enriches local CO<sub>2</sub> concentration, with a polyamine shell that is reorganized into a porous, ordered network through entanglement with an outer covalent organic framework (COF) shell. This hierarchical architecture enables dual amine functionalization via sequential "click" and Schiff-base reactions, achieving a CO<sub>2</sub> uptake of 3.4 mmol g<sup>-1</sup> at 1 bar. The COF outer layer also acts as a protective barrier, suppressing humidity interference and doubling cycling stability under simulated flue gas. Remarkably, the nanocomposites maintain structural integrity after one week in strongly acidic (3 M HNO<sub>3</sub>) or basic (NaOH, pH=14) environments, underscoring their chemical resilience. By uniting high capacity, cycling durability, and environmental tolerance, this CSS strategy offers a versatile platform for next-generation carbon capture materials.