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- Title
Influence of Magnesium Doping on the Photocatalytic and Antibacterial Properties of Hematite Nanostructures.
- Authors
Joseph, Julie Ann; Nair, Sinitha B.; Mary, Surya A.; John, Sareen Sarah; Shaji, Sadasivan; Philip, Rachel Reena
- Abstract
Herein, the effect of magnesium doping on hematite nanostructures prepared by a simple and cost‐effective electrochemical method is reported. Photocatalytic and antibacterial studies on the undoped and doped samples suggest improved performance for the Mg‐doped samples. Structural studies using X‐ray diffraction, Raman spectroscopy, and X‐ray photoelectron spectroscopy (XPS) in combination with field‐emission scanning electron microscopy for surface morphology confirm the Mg presence in the nanostructured hematite phase of iron oxide. Analyses of the valence band (VB) XPS spectra along with optical reflectance spectra indicate a shift in VB edge, characteristic of a conductivity type conversion from n‐type in hematite to p‐type in Mg‐doped hematite. The room temperature electrical conductivity is increased by three orders, and the optical bandgap is reduced by around 0.08 eV for moderately doped hematite nanostructures.
- Subjects
HEMATITE; X-ray photoelectron spectroscopy; MAGNESIUM; NANOSTRUCTURES; FERRIC oxide; OPTICAL spectra
- Publication
Physica Status Solidi (B), 2022, Vol 259, Issue 3, p1
- ISSN
0370-1972
- Publication type
Article
- DOI
10.1002/pssb.202100437