Abstract
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 Ti02-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.
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