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The Cerium/Boron Insertion Impact in Anatase Nano-Structures on the Photo-Electrochemical and Photocatalytic Response
- Source :
- Surfaces, Vol 4, Iss 1, Pp 54-65 (2021)
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Boron- and cerium-doped titania (Anatase) were prepared via sol-gel method. Phase composition and morphology were assessed by X-ray diffraction (XRD), scanning electronic microscopy (SEM), BET, diffuse reflectance spectra (DRS), and XPS. Photo-electrochemistry of these materials, deposited onto fluorine-doped SnO2 (FTO), was investigated in acid and acid-containing methanol. The boron-doped sample showed the best opto-electronic properties among the investigated samples. On the other hand, the cerium-doped titania samples annihilate to a certain extent the titania surface states, however, photogenerated charge separation was limited, and certainly associated to surface Ce3+/Ce4+ species. The substitutional effect of boron ions for O sites and interstitial sites was confirmed by XRD and XPS analyses.
- Subjects :
- doping effect
photo-electrochemistry
photocatalysis
recombination
Physics
QC1-999
Subjects
Details
- Language :
- English
- ISSN :
- 25719637
- Volume :
- 4
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Surfaces
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.19971bed528d4a11982ddeea79066792
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/surfaces4010008