A Minireview: The Mechanism of H₂O₂ Photoproduction by Graphitic Carbon Nitride

Abstract

Hydrogen peroxide (H 2 O 2 ) is extensively used in production and life, functioning as an ecofriendly oxidant. However, the dominant method currently employed, the anthraquinone method, is not conducive to sustainable development. Recently, photocatalytic H 2 O 2 synthesis has garnered significant attention as an environment‐friendly approach. Graphitic carbon nitride (g‐C 3 N 4 ), a new type of photocatalyst, shows great potential for generating H 2 O 2 due to its excellent stability, high photocatalytic activity, selectivity, easy adjustability, and low cost. However, the research on the mechanism of H 2 O 2 photoproduction has not been fully understood, which limits its development and practical application. Herein, the recent progress on modified g‐C 3 N 4 is summarized and the effect of modification methods on the photocatalytic activity and H 2 O 2 generation process is discussed. The challenges and perspectives of g‐C 3 N 4 toward H 2 O 2 photoproduction are proposed.