Photocatalysis is one potential solution to the energy and environmental crisis and greatly relies on the development of the catalysts. Niobium pentoxide (Nb₂O₅), 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 Nb₂O₅ prepared by different methods. Herein, the recent advances in the synthesis and application of Nb₂O₅‐based photocatalysts, including the pure Nb₂O₅, doped Nb₂O₅, metal species supported on Nb₂O₅, and other composited Nb₂O₅ 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 Nb₂O₅‐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 Nb₂O₅.

中文翻译：

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Nb2O5基光催化剂

光催化是解决能源和环境危机的一种潜在解决方案，并且极大地依赖于催化剂的开发。五氧化_二铌（Nb ₂ O ₅）是一种典型的无毒金属氧化物，具有生态友好性和强氧化能力，已引起研究人员的极大关注。此外，在通过不同方法制备的Nb ₂ O ₅上观察到独特的路易斯酸位点（LASs）和布朗斯台德酸位点（BASs）。本文介绍了基于Nb ₂ O ₅的光催化剂的合成和应用的最新进展，包括纯Nb ₂ O ₅，掺杂Nb ₂ O _5。总结了负载在Nb ₂ O ₅上的金属种类以及其他复合Nb ₂ O ₅催化剂。本文概述了Nb ₂ O ₅基催化剂在光催化中尺寸和晶相，不饱和Nb位和氧空位，LAS和BAS，掺杂剂和表面金属种类以及异质结结构的作用。最后，还提出了挑战，可以通过整合合成方法，开发新颖的光电表征技术以及对Nb ₂ O ₅的局部结构的深刻理解来克服。