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Structure, morphology and photocatalytic performance of europium and fluorine co-doped bismuth vanadate.
- Source :
- New Journal of Chemistry; 11/14/2022, Vol. 46 Issue 42, p20269-20278, 10p
- Publication Year :
- 2022
-
Abstract
- In this paper, Eu/F co-doped bismuth vanadate photocatalysts with different doping ratios were prepared by a hydrothermal method, and their microscopic morphology, crystal structure, light absorption and photocatalytic performance were investigated. Part of the F in the Eu/F co-doped samples might be doped to replace O in the BiVO<subscript>4</subscript> lattice, while Eu<superscript>3+</superscript> ions replaced Bi<superscript>3+</superscript> ions, which led to a difference in the morphology and internal structure. XRD and Raman spectroscopy characterization showed that the crystal structures of the samples were all monoclinic scheelite type, and contained a certain tetragonal scheelite type, and the crystallinity was good. The Eu/F co-doped samples exhibited better photoactivity under UV-Vis light. The recombination rate of the photogenerated carriers in the Eu/F co-doped samples was obviously reduced, but it showed a serious concentration dependence on the doping species. Under visible light irradiation, Eu/F co-doped samples (R = 0.75) had the best degradation effect on methylene blue (MB). In addition, the degradation mechanism of the photocatalyst was also explored. ˙O<subscript>2</subscript><superscript>−</superscript> and h<superscript>+</superscript> were the main active species affecting the degradation of MB by Eu/F–BiVO<subscript>4</subscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 46
- Issue :
- 42
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 159957736
- Full Text :
- https://doi.org/10.1039/d2nj03655j