Hematite (α-Fe₂O₃) with Oxygen Defects: The Effect of Heating Rate for Photocatalytic Performance.

ABSTRACT: Hematite (α-Fe₂O₃) 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. The effects of Vo can be broadly categorized into two opposing aspects: (1) acting as electron donors, enhancing carrier conductivity, and improving photocatalytic performance and (2) acting as surface carrier traps, accelerating excited carrier recombination, and deteriorating performance. Critically, the generation rate, distribution, role, and behavior of Vo s

SUBMITTER: Sakamoto M 

PROVIDER: S-EPMC10820844 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature