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Mesh-like structure integrated core-shell-shell nanocomposites for enhanced stability and performance in carbon
Sizhuo Yang1, Haiyan Mao2, Chaochao Dun1
1The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
Nature Communications
|November 26, 2025
Summary
New core-shell-shell nanocomposites offer robust carbon capture. This advanced material combines high CO2 uptake with exceptional stability, crucial for climate change mitigation efforts.
Area of Science:
- Materials Science
- Chemical Engineering
- Environmental Science
Background:
- Effective carbon capture is vital for climate change mitigation.
- Current sorbents often lack the required capacity and chemical stability for practical application.
- Developing robust and efficient CO2 sorbents remains a significant challenge.
Purpose of the Study:
- To design and synthesize novel core-shell-shell (CSS) nanocomposites for enhanced carbon capture.
- To investigate the CO2 adsorption capacity and chemical stability of the developed CSS materials.
- To assess the performance of CSS nanocomposites under simulated flue gas conditions.
Main Methods:
- Fabrication of CSS nanocomposites integrating a metal-organic framework (MOF) core with polyamine and covalent organic framework (COF) shells.
- Dual amine functionalization using sequential "click" and Schiff-base reactions.
- Characterization of CO2 uptake, cycling stability, and chemical resilience in acidic and basic environments.
Main Results:
- Achieved a CO2 uptake of 3.4 mmol g-1 at 1 bar.
- Demonstrated doubled cycling stability under simulated flue gas due to the protective COF outer layer.
- Maintained structural integrity for one week in 3 M HNO3 and NaOH (pH=14), highlighting exceptional chemical resilience.
Conclusions:
- The CSS nanocomposite architecture effectively integrates high CO2 adsorption capacity with superior chemical stability and durability.
- The hierarchical design provides a protective barrier against humidity and harsh chemical conditions.
- This strategy presents a versatile platform for developing next-generation carbon capture materials with improved performance and longevity.
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