S-scheme heterojunction in photocatalytic hydrogen production

As an ideal secondary energy source, hydrogen has the title of clean energy and the product of its com-plete combustion is only water, which is not polluting to the environment. Photocatalytic hydrogen pro-duction technology is an environmentally friendly, safe, and low-cost strategy that requires only an inex-haustible amount of solar energy and water as feedstock. This paper provides a detailed and detailed re-view of S-scheme heterojunction photocatalysts for photocatalytic hydrogen production, mainly including TiO2-based, Perovskite-based, CdS-based, Graphitic phase carbon nitride-based, COF-based graphdiyne-based, ZnO-based, and ZnIn2S4-based S-scheme heterojunction photocatalysts. The classification of S-scheme heterojunctions is summarized. What's more, various characterizations for direct verification of the charge migration mechanism of S-scheme heterojunctions are outlined. Based on the present study, the future potential challenges and future research trends for S-scheme heterojunctions in photocat-alytic hydrogen evolution technology are pointed out, which provides feasible strategies for the devel-opment and design of S-scheme heterojunction photocatalysts in the field of photocatalytic hydrogen evolution.& COPY; 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.