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Na/Mo co-doped PbTiO3 for photocatalytic water oxidation and Z-scheme overall water splitting under visible light.
- Source :
-
Chemical Communications . 6/18/2024, Vol. 60 Issue 48, p6198-6201. 4p. - Publication Year :
- 2024
-
Abstract
- Herein, we demonstrate a sodium/molybdenum (Na/Mo) co-doped ferroelectric PbTiO3 for efficient photocatalysis under visible light. Doped with a high concentration of Mo6+, quasi-continuous new energy levels are successfully introduced below the conduction band minimum of PbTiO3, giving rise to a band-to-band redshift of the absorption edge. The valence state difference of Mo6+ and Ti4+ in the doped PbTiO3 is compensated by the Na dopant, thus effectively suppressing the formation of the recombination centres caused by Mo4+. Combined with the intrinsic built-in electric field in PbTiO3, this Na/Mo co-doping strategy enables PbTiO3 to exhibit superior water oxidation activity under visible light with threshold wavelength up to 550 nm, which also promotes overall water splitting under visible light in a Z-scheme photocatalytic system. This strategy provides a generally applicable solution to extend the visible light absorption spectrum and engineer electronic structures of ferroelectric materials for photocatalysis and other energy conversion applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13597345
- Volume :
- 60
- Issue :
- 48
- Database :
- Academic Search Index
- Journal :
- Chemical Communications
- Publication Type :
- Academic Journal
- Accession number :
- 177802178
- Full Text :
- https://doi.org/10.1039/d4cc01761g