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Hollow MoS2-supported MAPbI3 composites for effective photocatalytic hydrogen evolution.
- Source :
- New Journal of Chemistry; 10/21/2022, Vol. 46 Issue 39, p18882-18889, 8p
- Publication Year :
- 2022
-
Abstract
- Metal halide perovskites represented by methylamine lead iodine (MAPbI<subscript>3</subscript>) have attracted extensive attention for their excellent performance in the field of photoelectric catalysis. However, the catalytic performance of MAPbI<subscript>3</subscript> is limited due to the severe recombination of electrons and holes. Here, we synthesized hollow MoS<subscript>2</subscript> (H-MoS<subscript>2</subscript>) microspheres by the template method and then supported it on the surface of MAPbI<subscript>3</subscript> by electrostatic coupling to obtain H-MoS<subscript>2</subscript>/MAPbI<subscript>3</subscript> composites, which showed excellent performance in photocatalytic hydrogen production. Among them, the 15% H-MoS<subscript>2</subscript>/MAPbI<subscript>3</subscript> composite showed the highest photocatalytic hydrogen evolution performance, which was 399 μmol h<superscript>−1</superscript>, about 260 times that of MAPbI<subscript>3</subscript> (1.53 μmol h<superscript>−1</superscript>). The long-term cycling experiments showed that the H-MoS<subscript>2</subscript>/MAPbI<subscript>3</subscript> composite retains its activity for at least 16 h. The excellent performance of H-MoS<subscript>2</subscript>/MAPbI<subscript>3</subscript> composites was attributed to the efficient shunting of photogenerated electrons and holes by H-MoS<subscript>2</subscript> as a cocatalyst. The results of our study provided a reference for the construction of MAPbI<subscript>3</subscript>-based composite heterostructures for efficient photocatalytic hydrogen production. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 46
- Issue :
- 39
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 159579066
- Full Text :
- https://doi.org/10.1039/d2nj03688f