Segmentation by type classifies photocatalytic powders into four material families, each influencing overall market size through distinct cost structures and performance attributes. TiO₂‑based powders remain the cornerstone, comprising roughly 55 % of volume, owing to their established synthesis routes, scalability, and proven UV‑active photocatalytic efficiency, which drives bulk procurement across water and air applications. ZnO‑based powders hold about 20 % share; their broader band‑gap and higher electron mobility make them attractive for visible‑light activation, especially in self‑cleaning surface formulations that demand rapid reaction kinetics. g‑C₃N₄‑based powders occupy an emerging 15 % segment, valued for metal‑free composition and tunable electronic properties, appealing to energy‑conversion projects seeking sustainable catalyst platforms. Doped or composite powders (e.g., metal‑doped TiO₂, TiO₂‑graphene hybrids) represent the remaining 10 %, where additive engineering enhances visible‑light response and durability, commanding premium pricing that lifts average market value despite lower shipment volumes.