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Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

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Emerging S-Scheme Photocatalyst.

Liuyang Zhang¹, Jianjun Zhang¹, Huogen Yu¹

¹Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)

|December 28, 2021

Summary

Emerging S-scheme heterojunctions significantly advance photocatalysis by overcoming single photocatalyst limitations. This review details their design, mechanisms, characterization, and applications for enhanced solar energy utilization.

Keywords:

S-scheme heterojunction curved Fermi level design principle electron transfer photocatalytic fundamental

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Area of Science:

Materials Science
Chemical Engineering
Environmental Science

Background:

Single photocatalysts suffer energy dissipation and limited efficiency.
Heterojunctions offer solutions, but Type-II and Z-scheme have drawbacks.

Purpose of the Study:

To review the state-of-the-art progress in S-scheme heterojunctions for photocatalysis.
To provide insights into designing S-scheme heterojunctions and their underlying mechanisms.
To clarify the understanding of the curved Fermi level at the S-scheme interface.

Main Methods:

Literature review of S-scheme heterojunctions in photocatalysis.
Analysis of design principles and characterization techniques.
Discussion of photocatalytic applications and future prospects.

Main Results:

S-scheme heterojunctions exhibit superior photocatalytic performance over single catalysts and other heterojunction types.
General design criteria and four types of S-scheme heterojunctions are proposed.
Direct characterization techniques for charge transfer are presented.

Conclusions:

S-scheme heterojunctions represent a promising strategy for efficient photocatalysis.
Further research on curved Fermi level and fundamental theories is crucial.
S-scheme heterojunctions hold significant potential for various photocatalytic applications.