Synthesis of ZnO–Co3O4 Nanocomposites for Efficient Methylene Blue Degradation under Solar Light Irradiation

The release of pollutants into water reservoirs is harmful to aquatic life and poses serious health risks to humans, which is a significant issue everywhere in the world. Photocatalytic degradation of organic dyes has attracted the attention of researchers in order to purify industrial wastewater. I...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2024-07, Vol.98 (7), p.1592-1606
Main Authors: Ali, Z., Mehboob, S., Farooq, M. H., Khan, M. D., Fareed, I., Fatima, Z., Yunas, M. F.
Format: Article
Language:English
Subjects:
Catalytic activity
Chemistry
Chemistry and Materials Science
Cobalt oxides
Energy gap
Industrial effluents
Industrial wastes
Light irradiation
Methylene blue
Nanocomposites
Nanomaterials
Optical properties
Photocatalysis
Photodegradation
Physical Chemistry
Physical Chemistry of Nanoclusters
Spectrum analysis
Stability tests
Supramolecular Structures
Water purification
Zinc oxide
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Summary:The release of pollutants into water reservoirs is harmful to aquatic life and poses serious health risks to humans, which is a significant issue everywhere in the world. Photocatalytic degradation of organic dyes has attracted the attention of researchers in order to purify industrial wastewater. In this work, ZnO is incorporated with Co 3 O 4 using the template-free hydrothermal method and co-precipitation method. After studying the structural and morphological characteristics with XRD and FESEM, optical properties and bandgap were investigated using UV-visible spectroscopy and PL spectroscopy, which gives information about the alterations in the band gap of nanocomposite while revealing defects in the materials. The photocatalytic activity was investigated for methylene blue (MB) over the tenure of 60 min. The composite exhibited 3.6- and 9.3-times better degradation as compared to pristine Co 3 O 4 and ZnO, respectively. The cyclic stability test and the scavenger experiments were also performed. The results suggest that the material can be used for industrial effluent purification purposes.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024424700614