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CdIn2S4 microspheres embedded with mesoporous Zn-doped g-C3N4 ultrathin nanosheets for efficient photocatalytic hydrogen evolution.
- Source :
- New Journal of Chemistry; 2/28/2024, Vol. 48 Issue 8, p3695-3706, 12p
- Publication Year :
- 2024
-
Abstract
- Herein, mesoporous Zn-doped g-C<subscript>3</subscript>N<subscript>4</subscript> wrapped CdIn<subscript>2</subscript>S<subscript>4</subscript> microsphere nanostructures were fabricated using a simple hydrothermal route. It is found that the CdIn<subscript>2</subscript>S<subscript>4</subscript>/Zn–g-C<subscript>3</subscript>N<subscript>4</subscript> nanocomposite exhibits the most efficient photocatalytic activity for hydrogen evolution. The photocatalytic activity of the CdIn<subscript>2</subscript>S<subscript>4</subscript>/Zn–g-C<subscript>3</subscript>N<subscript>4</subscript> composite presents the optimum performance for hydrogen evolution of 101.74 μmol h<superscript>−1</superscript>, which is ∼10.8 and 7.3 times that of pure g-C<subscript>3</subscript>N<subscript>4</subscript> and bare CdIn<subscript>2</subscript>S<subscript>4</subscript>, respectively. The results of varied characterization such as TEM and XPS demonstrate that a tight heterojunction has been successfully built in CdIn<subscript>2</subscript>S<subscript>4</subscript>/Zn–g-C<subscript>3</subscript>N<subscript>4</subscript> nanocomposites, which is highly favorable to limit the recombination of photogenerated electron–hole pairs. Furthermore, Zn could partially replace the C element in the g-C<subscript>3</subscript>N<subscript>4</subscript> framework and enhance the separation of photo-induced electrons and holes. Moreover, the incorporation of Zn-doped g-C<subscript>3</subscript>N<subscript>4</subscript> nanosheets with mesoporous features considerably improves the photo-stability of CdIn<subscript>2</subscript>S<subscript>4</subscript> microspheres. We hope that these CdIn<subscript>2</subscript>S<subscript>4</subscript>/Zn–g-C<subscript>3</subscript>N<subscript>4</subscript> nanocomposites with the tight heterojunction structure may provide new insight into designing novel photocatalysts with high efficiency and excellent stability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 48
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 175525043
- Full Text :
- https://doi.org/10.1039/d3nj05590f