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

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Abstract

In this study, we synthesized the visible-light-driven photocatalytic activity of CdO nanowires and g-C3N4/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-C3N4/CdO hybrid nanostructure. Also, we investigated how CdO nanowires and g-C3N4/CdO hybrid nanostructure function as photocatalysts in the photocatalytic oxidation of RhB under visible light illumination, which revealed that g-C3N4/CdO hybrid nanostructure exhibits better photocatalytic oxidation on RhB than CdO nanowires with the first-order degradation kinetics. The prepared g-C3N4/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-C3N4/CdO can be a potential approach to develop effective photocatalysts for treating effluents discharged from textile and dyeing industries.

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Authors and Affiliations

  1. Research and Development Centre, Bharathiar University, Coimbatore, Tamil Nadu, 641046, India

    T. P. Vijayakumar

  2. Department of Physics, Mar Athanasius College (Autonomous), Kothamangalam, Kerela, 686666, India

    M. D. Benoy

  3. Department of Physics, Laxminarayana Arts and Science College for Women, Dharmapuri, Tamil Nadu, 636705, India

    J. Duraimurugan

  4. Department of Physics, K.S. Rangasamy College of Arts and Science (Autonomous), Tiruchengode, Tamil Nadu, 637215, India

    G. Suresh Kumar

  5. Department of Physics, Periyar University, Salem, Tamil Nadu, 636011, India

    S. Shanavas & R. Ramesh

  6. Department of Energy Science, Periyar University, Salem, Tamil Nadu, 636011, India

    P. Maadeswaran

  7. Department of Applied Science, PSG College of Technology, Coimbatore, Tamil Nadu, 641004, India

    A. Senthil Kumar

  8. Facultad de Ingeniería y Tecnología, Universidad San Sebastián, Bellavista 7, 8420524, Santiago, Chile

    Roberto Acevedo

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  1. T. P. Vijayakumar
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Vijayakumar, T.P., Benoy, M.D., Duraimurugan, J. et al. A comparative study on visible-light-driven photocatalytic activity of CdO nanowires and g-C3N4/CdO hybrid nanostructure. J Mater Sci: Mater Electron 33, 8635–8643 (2022). https://doi.org/10.1007/s10854-021-06695-8

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