Development of Bi2O3/MoSe2 mixed nanostructures for photocatalytic degradation of methylene blue dye

• Published in: Journal of Taibah University for Science Vol. 17; no. 1
• Main Authors: Alahmadi, M., Alsaedi, Wael. H., Mohamed, W. S., Hassan, Hassan M. A., Ezzeldien, Mohammed, Abu-Dief, Ahmed M.
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 31-12-2023; Taylor & Francis Group
• Subjects: degradation effeciency; hydrothermal synthesis; methylene blue dye; Mixed oxide nanocomposites; photocatalyst
• ISSN: 1658-3655
• DOI: 10.1080/16583655.2022.2161333

Herein, we demonstrate the sample and low coast hydrothermal synthesis of a nanocomposite of Bi
2
O
3
/MoSe
2
for hybrid photocatalyst. The structure of as-synthesized samples was characterized by using several techniques, including XRD spectroscopy, Raman spectroscopy, XPS, SEM, BET, and UV-visible absorption spectroscopy. The nitrogen adsorption-desorption measurements show that the samples have a mesoporous texture with slits like pores. The Bi
2
O
3
/MoSe
2
nanocomposite had BET surface areas of 36.439 m
2
/g, which were more than those of Bi
2
O
3
(18.342 m
2
/g) and MoSe
2
(12.923 m
2
/g). Under visible illumination, the photocatalytic activities of pure samples ( Bi
2
O
3
and MoSe
2
) and the hybrid Bi
2
O
3
/MoSe
2
sample for the disintegration of methylene blue were assessed. The results show that the Bi
2
O
3
/MoSe
2
sample showed the highest photocatalytic degradation efficiency (i.e. 96.5% after an exposure time of 80 min). The increased photocatalytic activity is due to the mixed sample's high crystallinity and surface area, as well as the small particle size.