Covalent organic framework photocatalysts: structures and applications

Area of Science:

• Materials Science
• Chemistry
• Environmental Science

Background:

• Growing energy demand and environmental pollution necessitate clean, renewable energy sources.
• Photocatalysis offers a promising route for fuel production and pollutant degradation using solar energy.
• Covalent organic frameworks (COFs) are emerging as highly effective photocatalysts due to their unique properties.

Purpose of the Study:

• To critically review recent advancements in COF photocatalysts.
• To summarize and compare different COF building block linkers (e.g., boron- and nitrogen-containing).
• To discuss COF morphologies and strategies for enhancing photocatalytic activity.

Main Methods:

• Comprehensive literature review of COF photocatalyst research.
• Analysis of diverse linker chemistries and their impact on COF structure and function.
• Evaluation of morphological control and activity enhancement strategies for COFs.

Main Results:

• COFs exhibit excellent structural regularity, robustness, porosity, and photocatalytic activity.
• Boron- and nitrogen-containing linkers are key components influencing COF properties.
• Various strategies effectively enhance the photocatalytic performance of COFs.

Conclusions:

• COF-based photocatalysts are highly versatile for applications in hydrogen evolution, CO2 conversion, and environmental contaminant degradation.
• Further research into COF design and application holds significant potential for sustainable energy and environmental solutions.
• Challenges and opportunities in the future development of COF photocatalysts are identified.