Facile Synthesis of 2D/2D Ti<sub>2</sub>C<sub>3</sub>/ZnIn<sub>2</sub>S<sub>4</sub> Heterostructure for Enhanced Photocatalytic Hydrogen Generation
ZnIn<sub>2</sub>S<sub>4</sub>, a novel two-dimensional visible light-responsive photocatalyst, has attracted much attention in the photocatalytic evolution of H<sub>2</sub> under visible light irradiation due to its attractive intrinsic photoelectric properties an...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-02-01
|
| Series: | International Journal of Molecular Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1422-0067/24/4/3936 |
| Summary: | ZnIn<sub>2</sub>S<sub>4</sub>, a novel two-dimensional visible light-responsive photocatalyst, has attracted much attention in the photocatalytic evolution of H<sub>2</sub> under visible light irradiation due to its attractive intrinsic photoelectric properties and geometric configuration. However, ZnIn<sub>2</sub>S<sub>4</sub> still has severe charge recombination, which results in moderate photocatalytic performance. Herein, we report the successful synthesis of 2D/2D ZnIn<sub>2</sub>S<sub>4</sub>/Ti<sub>3</sub>C<sub>2</sub> nanocomposites by a facile one-step hydrothermal method. The efficiency of the nanocomposites in photocatalytic hydrogen evolution under visible light irradiation was also evaluated for different ratios of Ti<sub>3</sub>C<sub>2</sub>, and the optimal photocatalytic activity was achieved at 5% Ti<sub>3</sub>C<sub>2</sub>. Importantly, the activity was significantly higher than that of pure ZnIn<sub>2</sub>S<sub>4</sub>, ZnIn<sub>2</sub>S<sub>4</sub>/Pt, and ZnIn<sub>2</sub>S<sub>4</sub>/graphene. The enhanced photocatalytic activity is mainly due to the close interfacial contact between Ti<sub>3</sub>C<sub>2</sub> and ZnIn<sub>2</sub>S<sub>4</sub> nanosheets, which amplifies the transport of photogenerated electrons and enhances the separation of photogenerated carriers. This research describes a novel approach for the synthesis of 2D MXenes for photocatalytic hydrogen production and expands the utility of MXene composite materials in the fields of energy storage and conversion. |
|---|---|
| ISSN: | 1661-6596 1422-0067 |