A comparative study on visible-light-driven photocatalytic activity of CdO nanowires and g-C3N4/CdO hybrid nanostructure

In this study, we synthesized the visible-light-driven photocatalytic activity of CdO nanowires and g-C 3 N 4 /CdO hybrid nanostructure by the hydrothermal method. X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectrometry, and UV–Vis diffuse reflectance spectroscopy studi...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2022-04, Vol.33 (11), p.8635-8643
Main Authors: Vijayakumar, T. P., Benoy, M. D., Duraimurugan, J., Suresh Kumar, G., Shanavas, S., Maadeswaran, P., Ramesh, R., Senthil Kumar, A., Acevedo, Roberto
Format: Article
Language:English
Subjects:
Carbon nitride
Catalytic activity
Characterization and Evaluation of Materials
Charge transport
Chemistry and Materials Science
Comparative studies
Conduction bands
Current carriers
Holes (electron deficiencies)
Light
Materials Science
Nanostructure
Nanowires
Optical and Electronic Materials
Optical properties
Oxidation
Photocatalysis
Photocatalysts
Photoelectrons
Valence band
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Summary:In this study, we synthesized the visible-light-driven photocatalytic activity of CdO nanowires and g-C 3 N 4 /CdO hybrid nanostructure by the hydrothermal method. X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectrometry, and UV–Vis diffuse reflectance spectroscopy studies were carried out to compare the structural, morphological, and optical properties of CdO nanowires and g-C 3 N 4 /CdO hybrid nanostructure. Also, we investigated how CdO nanowires and g-C 3 N 4 /CdO hybrid nanostructure function as photocatalysts in the photocatalytic oxidation of RhB under visible light illumination, which revealed that g-C 3 N 4 /CdO hybrid nanostructure exhibits better photocatalytic oxidation on RhB than CdO nanowires with the first-order degradation kinetics. The prepared g-C 3 N 4 /CdO hybrid nanostructure can provide hybridized conduction band or valence band, which facilitates better charge transport and reduces recombination electron-hole charge carriers leading to higher photocatalytic performance. Hence, making hybrid nanostructures such as g-C 3 N 4 /CdO can be a potential approach to develop effective photocatalysts for treating effluents discharged from textile and dyeing industries.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-021-06695-8