Photocatalytic Performance Enhancement Using External Magnetic Fields ‐ A Review

The coupling of external magnetic fields and photocatalysis has gained attention. However, the research in this field remains in nascent stages with unclear basic theory, mechanism and experimental method. The review aims to elucidate related basic theories, including the Lorentz force, spin polarization and radical pairs mechanism along with practical applications. One important factor restricting the application of external magnetic field in photocatalysis is the lack of robust characterization methods for spin detection, photo‐generated electrons and holes detection and free radicals characterization. The challenges and prospects associated with the external magnetic field effect on photocatalysis are also discussed. This comprehensive review on the external magnetic field effect on photocatalysis, offering a detailed reference for understanding the coupling of external magnetic fields and photocatalysis and providing insight for the in‐depth study.