Sir/Madam,
As per Overall Water Splitting (OWS) discussion:
Mostly, Z-scheme concept is utilized in the photocatalyst sheet applications. Is there any other photocatalyst concept (such like Type-II heterojunction or S-scheme) is valid for the over all water splitting process?
Please share the good reference for related concept.
Look this paper:
S-scheme photocatalyst for degradation of organic pollutants and H2 production
https://www.sciencedirect.com/science/article/pii/S2238785422011176?via%3Dihub
Yes, there are other photocatalyst concepts besides the Z-scheme that have been proposed for overall water splitting.
One such concept is the Type-II heterojunction, in which a semiconductor material with a wider bandgap is paired with a semiconductor material with a narrower bandgap. The two materials form a heterojunction, which allows for a more efficient separation of the electron-hole pairs generated by the absorption of photons. This concept has been proposed for use in overall water splitting by using semiconductors such as TiO2 and CdS as well as other combinations.
Another concept is the S-scheme, which involves the use of a single semiconductor material with a bandgap that is intermediate between the bandgaps of the materials used in the Z-scheme. This concept aims to improve the overall water splitting efficiency by reducing the recombination of the electron-hole pairs generated by the absorption of photons.
A good reference for these concepts is "Recent advances in photocatalytic water splitting" by D. Wang and Y. Wang, published in Journal of Materials Chemistry A (2013). This review article provides a detailed overview of the recent developments in photocatalytic water splitting and discusses the different photocatalyst concepts, including the Z-scheme, Type-II heterojunction, and S-scheme.
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