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An efficient hydrogen evolution photocatalyst of Rh@Cr2O3-loaded PbMoO4 twenty-six facet polyhedrons.
- Source :
- New Journal of Chemistry; 9/7/2022, Vol. 46 Issue 33, p16035-16039, 5p
- Publication Year :
- 2022
-
Abstract
- Shape anisotropic semiconductors are advanced catalysts for resolving energy crises. However, modification studies are still needed to overcome their intrinsic disadvantages, such as the lack of active sites. With this aim, an excellent hydrogen evolution photocatalyst Rh@Cr<subscript>2</subscript>O<subscript>3</subscript>-loaded PbMoO<subscript>4</subscript> twenty-six facet polyhedron (PM/Rh@Cr<subscript>2</subscript>O<subscript>3</subscript>) has been synthesized by a liquid method. Based on XPS, electrochemical investigation and hydrogen evolution reaction (HER) test, it is demonstrated that Rh acts as an electron collector and active site; moreover, Cr<subscript>2</subscript>O<subscript>3</subscript> can assist Rh in the dissociation of water. In addition, Cr<subscript>2</subscript>O<subscript>3</subscript> can also inhibit the reverse reaction of water splitting as well as the mass transfer of water. In conclusion, the H<subscript>2</subscript> yield rate increased from 0 μmol g<superscript>−1</superscript> h<superscript>−1</superscript> of PbMoO<subscript>4</subscript> (PM) to 704 μmol g<superscript>−1</superscript> h<superscript>−1</superscript> of PM/Rh@Cr<subscript>2</subscript>O<subscript>3</subscript>, and PM/Rh@Cr<subscript>2</subscript>O<subscript>3</subscript> exhibited excellent photo-stability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 46
- Issue :
- 33
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 158668023
- Full Text :
- https://doi.org/10.1039/d2nj02696a