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Enhanced visible light photocatalytic performance of WSe2/CNT hybrid photocatalysts that were synthesized by a facile hydrothermal route

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Abstract

In this investigation, a facile and cost-effective method was developed for fabricating the tungsten selenide/carbon nanotube (WSe2/CNT) hybrid photocatalysts by an aqueous hydrothermal method. The structural, optical, and photocatalytic activities of the prepared photocatalysts were investigated through various characterization techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectra analysis, UV-Vis spectra analysis, and photoluminescence spectra analysis. The photocatalytic activity of the catalysts was tested toward methyl orange (MO) under visible light irradiation. The WSe2/CNT hybrid photocatalysts show outstanding efficiency (95%), high rate constant (0.341 min−1), and high stability. Moreover, the WSe2/CNT composite exhibits enhanced photoconversion efficiency (8.23%) under solar light. The possible photovoltaic mechanism was also proposed and discussed.

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Authors and Affiliations

  1. Department of Electrical and Electronics Engineering, University College of Engineering, Thirukkuvalai, Thirukkuvalai, Tamilnadu, 610204, India

    M. Durairasan & B. Rajeshkanna

  2. Department of Chemistry, University College of Engineering, Panruti, Panruti, Tamilnadu, 607106, India

    P. Siva Karthik

  3. Department of Physics, University College of Engineering, Panruti, Panruti, Tamilnadu, 607106, India

    J. Balaji

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  1. M. Durairasan
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  2. P. Siva Karthik
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  4. B. Rajeshkanna
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Correspondence to P. Siva Karthik.

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Durairasan, M., Karthik, P.S., Balaji, J. et al. Enhanced visible light photocatalytic performance of WSe2/CNT hybrid photocatalysts that were synthesized by a facile hydrothermal route. Ionics 27, 2151–2158 (2021). https://doi.org/10.1007/s11581-021-03976-4

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  • DOI: https://doi.org/10.1007/s11581-021-03976-4

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