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Construction of oxygen-vacancies-rich S-scheme BaTiO3/red phosphorous heterojunction for enhanced photocatalytic activity.
- Source :
- Journal of Materials Science & Technology; Sep2023, Vol. 156, p217-229, 13p
- Publication Year :
- 2023
-
Abstract
- • The S-scheme BTO/HRP was synthesized to improve the charge separation efficiency and redox ability. • BTO/HRP exhibited excellent photocatalytic performance for RhB degradation and E. coli. inactivation under visible light. • The unique charge transfer mechanism promoted the effective separation and transportation of e <superscript>−</superscript> and h <superscript>+</superscript>. • The oxygen vacancy shifted the fermi energy level upward with consequent effects on the energy band width and light absorbance. The S-scheme heterojunctions can effectively separate photogenerated electrons and holes, retain their high redox capacity, and provide great prospects for enhancing the photocatalytic activity of the composites in different fields. Herein, S-scheme heterojunction photocatalytic materials were rationally designed and prepared by a simple hydrothermal method between narrow-bandgap red phosphorus (HRP) and wide-bandgap BaTiO 3 (BTO) photocatalysts. Owing to the effective charge separation and redox ability from the S-scheme mechanism and oxygen vacancies, BTO/HRP exhibited good photoelectrochemical and photocatalytic degradation ability. Systematic photoreaction tests demonstrated that BTO/HRP had high practicality in the removal of pollutants from wastewater; its photodegradation rate of Rhodamine B reached 3.029 × 10<superscript>−1</superscript> min<superscript>−1</superscript> in 12 min; and it could inactivate 1.8 × 10<superscript>9</superscript> CFU/mL of Escherichia. coli in 1 h, with an antibacterial rate of 99.8%. This paper provided a promising photocatalyst for pollutant removal and a new strategy for the fabrication of efficient RP-based photocatalytic materials. [Display omitted] [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10050302
- Volume :
- 156
- Database :
- Supplemental Index
- Journal :
- Journal of Materials Science & Technology
- Publication Type :
- Periodical
- Accession number :
- 164300736
- Full Text :
- https://doi.org/10.1016/j.jmst.2023.03.007