Covalent Organic Frameworks for Extracting Water from Air.
Chao Sun1, Dafei Sheng1, Bo Wang1
1Frontiers Science Center for High Energy Material, Advanced Technology Research Institute (Jinan), Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
Covalent organic frameworks (COFs) show promise for atmospheric water harvesting. This review covers COF types, structures, and their application in sorption-based water systems to combat scarcity.
Area of Science:
- Materials Science
- Environmental Science
- Chemical Engineering
Background:
- Global water scarcity is exacerbated by population growth and industrialization.
- Sorption-based atmospheric water harvesting (SAWH) offers a viable solution.
- Covalent organic frameworks (COFs) are emerging as highly effective sorbent materials.
Purpose of the Study:
- To provide an overview of COF types, structures, and synthesis.
- To summarize recent advancements in COF-based SAWH.
- To discuss the challenges and future prospects of COF-based SAWH systems.
Main Methods:
- Review of different COF architectures and linkage chemistries.
- Analysis of strategies for tuning COF sorption properties.
- Evaluation of thermodynamic and dynamic performance optimization for SAWH.
Main Results:
- COFs exhibit high surface area, tunable porosity, and customizable chemistry, making them ideal for water adsorption.
- Recent studies demonstrate effective strategies for enhancing COF performance in SAWH applications.
- Controlling sorption properties is key to optimizing water harvesting efficiency.
Conclusions:
- COFs represent a promising class of materials for efficient atmospheric water harvesting.
- Further research is needed to overcome challenges and improve the scalability of COF-based SAWH systems.
- Optimizing COF design and system integration is crucial for addressing global water stress.
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