Abstract
AbstractS‐scheme heterojunction has emerging as a new star in the field of photocatalysis, attributing to its superior separation of photogenerated charge carriers and strong redox abilities. The general designing criteria and several types of S‐scheme heterojunction were provided. Advanced characterization techniques, including Kelvin probe force microscopy, electron paramagnetic resonance spectroscopy, and in‐situ irradiated X‐ray photoelectron spectroscopy, were presented for disclosing the transfer mechanism in S‐scheme heterojunctions. The recent innovations in the application of photocatalytic oxygen reduction reaction in S‐scheme heterojunction based polymeric carbon nitride photocatalyst were discussed. To conclude, this concept highlights the role of S‐scheme heterojunction in photocatalysis and gives future perspectives on their further applications.
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