Selectivity Enhancement in Heterogeneous Photocatalytic Transformations.

Area of Science:

• Materials Science
• Chemical Engineering
• Environmental Science

Background:

• Photocatalysis is traditionally viewed as an unselective process, particularly in aqueous solutions.
• Research into selective photocatalysis has been historically limited but is now experiencing rapid growth.
• Emerging applications highlight the increasing importance of controlled photocatalytic reactions.

Purpose of the Study:

• To review strategies for improving the selectivity of photocatalysis.
• To cover diverse photocatalysts and their modifications.
• To discuss industrially relevant processes including organic/inorganic transformations and CO2 utilization.

Main Methods:

• Comprehensive literature review of selective photocatalysis strategies.
• Analysis of photocatalyst modifications and their impact on selectivity.
• Evaluation of non-semiconductor photocatalysts like Ti-Si molecular sieves and carbon quantum dots (CQDs).

Main Results:

• Identification of key strategies to enhance photocatalyst selectivity across various reactions.
• Demonstration of selective photocatalysis in oxidation, reduction, and CO2 transformation processes.
• Highlighting the role of novel materials like CQDs in specific selective reactions, such as epoxidation.

Conclusions:

• Selective photocatalysis offers significant potential for industrial applications.
• Further research is needed to overcome challenges and explore future directions in the field.
• Novel photocatalyst designs and process optimizations are crucial for advancing selective photocatalysis.