Non‐noble Plasmonic Enhancement ( NNPE ) for PC Energy Conversion

Owing to the surface plasmon resonance (SPR) effect, plasmonic photocatalysts have shown great potential for the application of photocatalytic energy conversion, leading to the near-infrared broad-spectrum response, promoted separation rate of charge carriers, and more active reaction sites. However, relevant studies mainly focus on noble metals, which are greatly limited because of their high costs. Furthermore, the desired plasmonic noble metals are hard to obtain because their plasmonic frequencies are strongly shape and size dependent. Recently, researchers have reported promising non-noble-metal plasmonic photocatalysts, including Al, Cu, Bi, and tungsten-, molybdenum-, and bismuth-based metal oxides, which receive much attention due to their excellent photocatalytic energy conversion efficiency. Herein, we comprehensively summarized the properties, performances, and mechanisms of these photocatalysts and presented the critical reviews on recent advances, challenges, and opportunities in this emerging area.