Issue 15, 2024

Progress on enhancing the charge separation efficiency of carbon nitride for robust photocatalytic H2 production

Abstract

Solar-driven H2 production from water splitting with efficient photocatalysts is a sustainable strategy to meet the clean energy demand and alleviate the approaching environmental issues caused by fossil fuel consumption. Among various semiconductor-based photocatalysts, graphitic carbon nitride (g-C3N4) has attracted much attention due to its advantages of long term-stability, visible light response, low cost, and easy preparation. However, the intrinsic Coulombic attraction between charge carriers and the interlayer electrostatic barrier of bulk g-C3N4 result in severe charge recombination and low charge separation efficiency. This perspective summarizes the recent progress in the development of g-C3N4 photocatalytic systems, and focuses on three main modification strategies for promoting charge transfer and minimizing charge recombination, including structural modulation, heterojunction construction, and cocatalyst loading. Based on this progress, we provide conclusions regarding the current challenges of further improving photocatalytic efficiency to fulfill commercial requirements, and propose some recommendations for the design of novel and satisfactory g-C3N4 photocatalysts, which is expected to progress the solar-to-hydrogen conversion.

Graphical abstract: Progress on enhancing the charge separation efficiency of carbon nitride for robust photocatalytic H2 production

Article information

Article type
Perspective
Submitted
30 Ara 2023
Accepted
17 Mar 2024
First published
19 Mar 2024

Phys. Chem. Chem. Phys., 2024,26, 11243-11262

Progress on enhancing the charge separation efficiency of carbon nitride for robust photocatalytic H2 production

M. Shao, Y. Shao and H. Pan, Phys. Chem. Chem. Phys., 2024, 26, 11243 DOI: 10.1039/D3CP06333J

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