NO x Removal Using Defective Photocatalytic Materials

This chapter comprehensively reviews the research progress of defective photocatalytic materials in the field of photocatalytic conversion of nitric oxide (NO). It first outlines two main pathways for photocatalytic NO conversion, namely, oxidation to nitrate and reduction to N 2 and O 2 . Subsequently, the mechanisms by which different types of defects influence the performance of photocatalytic materials, primarily including titanium-based (Ti-based), zinc-based (ZN-based), and g-C 3 N 4 materials, are discussed in detail. By introducing defects, the light absorption range of photocatalytic materials is broadened, and the separation efficiency of photogenerated carriers is significantly improved, thereby facilitating efficient adsorption and activation of NO. Finally, the chapter anticipates the potential applications of defective photocatalytic materials in environmental protection and identifies future research directions and challenges. This review aims to provide comprehensive reference and guidance for researchers in related fields.