Structural and optical investigations on sprayed Co doped La2O3 thin films along with photocatalytic and anti-bacterial applications

Co doped La2O3 thin films are prepared successfully by the spray pyrolysis method. These thin layers are characterized by different techniques. First, the structural and the morphological properties are studied by XRD, Raman and SEM techniques. Second, the photoluminescences (PL) measurements are ca...

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Bibliographic Details
Published in:Optik (Stuttgart) 2021-09, Vol.242, p.166837, Article 166837
Main Authors: Jbeli, R., Lahmar, M., Bilel, C., Saadallah, F., Ouzari, H.I., Bouaïcha, M., Amlouk, M.
Format: Article
Language:English
Subjects:
Antibacterial application
La2O3:Co
Photocatalysis
Raman
SEM
Thin films
XRD
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Summary:Co doped La2O3 thin films are prepared successfully by the spray pyrolysis method. These thin layers are characterized by different techniques. First, the structural and the morphological properties are studied by XRD, Raman and SEM techniques. Second, the photoluminescences (PL) measurements are carried out on these films and tested for the photocatalysis of methyl orange dye. La2O3 thin film at Co content of 5% exhibits the best photocatalytic activity. Finally, Co doped layers are used as antibacterial agents against two strains Pseudomonas Aeroginosa and Staphylococcus aureus. We notice that pure La2O3, La2O3: Co (1%) and La2O3:Co (5%) have stopped the bacterial growth which revealed a residual viability 100% against Pseudomonas Aeroginosa. Besides, the best antibacterial activity against Staphylococcus aureus is rather obtained with La2O3: Co (5%).
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2021.166837