Issue 6, 2024

Cd0.9La0.1S/graphdiyne type-II heterojunction structure for efficient photocatalytic hydrogen production

Abstract

Most single-component photocatalysts are affected by their own characteristics, such as poor light absorption performance or fast photogenerated carrier recombination rate, resulting in low photocatalytic activity. Due to the unique structural interactions and electron transfer behaviour between different components, two-component catalysts exhibit catalytic activity with greater application potential. In this work, a Cd0.9La0.1S/graphdiyne (GDY) dual-component photocatalyst has been prepared. The introduction of GDY into Cd0.9La0.1S effectively enhances the light absorption range of Cd0.9La0.1S and reduces the photogenerated carrier recombination rate, increasing the hydrogen production of Cd0.9La0.1S. The presence of GDY large lamellae has effectively reduced the aggregation degree of Cd0.9La0.1S nanoparticles. The increased dispersion has also exposed more active sites, resulting in a larger reactive area for hydrogen production. Hydrogen production of Cd0.9La0.1S/GDY is approximately 23 times higher than that of pure Cd0.9La0.1S. In addition, it is proposed that the formation of a type-II heterojunction between Cd0.9La0.1S and GDY could be the cause of the increase in hydrogen production.

Graphical abstract: Cd0.9La0.1S/graphdiyne type-II heterojunction structure for efficient photocatalytic hydrogen production

Article information

Article type
Paper
Submitted
03 Jan 2024
Accepted
04 Feb 2024
First published
09 Feb 2024

Catal. Sci. Technol., 2024,14, 1595-1604

Cd0.9La0.1S/graphdiyne type-II heterojunction structure for efficient photocatalytic hydrogen production

Y. Ke, S. Wang, F. Jin, Z. Liu and Z. Jin, Catal. Sci. Technol., 2024, 14, 1595 DOI: 10.1039/D4CY00007B

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