Hematite (-FeO) with Oxygen Defects: The Effect of Heating Rate for Photocatalytic Performance.

Hematite (-FeO) emerges as an enticing material for visible-light-driven photocatalysis owing to its remarkable stability, low toxicity, and abundance. However, its inherent shortcomings, such as a short hole diffusion length and high recombination rate, hinder its practical application. Recently, oxygen vacancies (Vo) within hematite have been demonstrated to modulate its photocatalytic attributes.