Nanotechnology

Dopant

Photocatalysis

Photoelectric effect

Heterojunction

Engineering

Catalysis

Inorganic chemistry

Niobium pentoxide

Chemistry

Metallurgy

Materials science

Niobium oxide

Oxide

Niobium

Metal

Chemical engineering

Optoelectronics

Biochemistry

Doping

Advanced Science

Photocatalysis is one potential solution to the energy and environmental crisis and greatly relies on the development of the catalysts. Niobium pentoxide (Nb 2 O 5 ), a typically nontoxic metal oxide, is eco‐friendly and exhibits strong oxidation ability, and has attracted considerable attention from researchers. Furthermore, unique Lewis acid sites (LASs) and Brønsted acid sites (BASs) are observed on Nb 2 O 5 prepared by different methods. Herein, the recent advances in the synthesis and application of Nb 2 O 5 ‐based photocatalysts, including the pure Nb 2 O 5 , doped Nb 2 O 5 , metal species supported on Nb 2 O 5 , and other composited Nb 2 O 5 catalysts, are summarized. An overview is provided for the role of size and crystalline phase, unsaturated Nb sites and oxygen vacancies, LASs and BASs, dopants and surface metal species, and heterojunction structure on the Nb 2 O 5 ‐based catalysts in photocatalysis. Finally, the challenges are also presented, which are possibly overcome by integrating the synthetic methodology, developing novel photoelectric characterization techniques, and a profound understanding of the local structure of Nb 2 O 5 .

Nb<sub>2</sub>O<sub>5</sub>‐Based Photocatalysts

Nb2O5‐Based Photocatalysts

Nb₂O₅‐Based Photocatalysts