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Bi2Fe4O9@ZnIn2S4 S-scheme laminated heterojunction photocatalyst towards optimized photocatalytic performance.
- Source :
- Dalton Transactions: An International Journal of Inorganic Chemistry; 6/14/2023, Vol. 52 Issue 22, p7724-7730, 7p
- Publication Year :
- 2023
-
Abstract
- Reasonable design of heterojunction photocatalysts can effectively promote charge separation, thus improving their photocatalytic performance. Herein, a Bi<subscript>2</subscript>Fe<subscript>4</subscript>O<subscript>9</subscript>@ZnIn<subscript>2</subscript>S<subscript>4</subscript> S-scheme laminated heterojunction photocatalyst with 2D/2D interface interaction is prepared via a hydrothermal–annealing–hydrothermal method. The photocatalytic hydrogen production rate of Bi<subscript>2</subscript>Fe<subscript>4</subscript>O<subscript>9</subscript>@ZnIn<subscript>2</subscript>S<subscript>4</subscript> is up to 3964.26 μmol h<superscript>−1</superscript> g<superscript>−1</superscript>, which is 12.1 times higher than that of pristine ZnIn<subscript>2</subscript>S<subscript>4</subscript>. In addition, its photocatalytic tetracycline degradation efficiency (99.9%) is also optimized. The enhanced photocatalytic performance can be attributed to the formation of S-scheme laminated heterojunctions that facilitate charge separation as well as strong 2D/2D laminated interface interactions favoring charge transfer. By combining in situ irradiation X-ray photoelectron spectroscopy with other characterization methods, the photoexcited charge transfer mechanism of S-scheme heterojunctions has been proved. Photoelectric chemical tests demonstrate the effectiveness of the S-scheme laminated heterojunction in improving the charge separation. This strategy provides a novel perspective for designing other high-efficient S-scheme laminated heterojunction photocatalysts. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 52
- Issue :
- 22
- Database :
- Complementary Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 164129924
- Full Text :
- https://doi.org/10.1039/d3dt01170d