Graphitic Carbon Nitride Based Materials towards Photoproduction of H2O2

Hydrogen peroxide (H2O2) can be considered as one of the world's indispensable chemicals. However, the synthetic process can prompt several severe environmental and human health issues. However, solar H2O2 production may provide opportunities to mitigate such issues. Graphitic carbon nitride (g-C3N4) has emerged as one promising material for photocatalytic applications due to its unique properties. Although tremendous efforts in engineering g-C3N4 have been proposed to improve catalytic results, the materials obtained still have some issues. Additionally, the mechanisms behind the production of H2O2 by using such materials are not yet fully understood. Herein, we conducted a literature survey reviewing the production of H2O2 using g-C3N4-based materials. The essential aspects of and current challenges in photocatalytic H2O2 generation are discussed, which may provide insight for researchers to overcome barriers and develop sustainable methods for H2O2 production.