• PERARASU THANGAVELU

      Articles written in Bulletin of Materials Science

    • CdS-deposited titania nanotubes array heterostructures and its investigation for photocatalytic application under visible light

      R DELMA JONES RUFINA PERARASU THANGAVELU

      More Details Abstract Fulltext PDF

      Titania is a fantastic photocatalyst, although visible excitation is the gold standard due to its broader bandgap. As a solution, doping is used to boost visible light excitation. Cadmium sulphide (CdS) is another well-known photomaterial that forms the best photocatalyst when combined with titania. Because of its organized architecture and large surface area compared to nanoparticles, the nanotubes array draws our attention among the many dimensions of nanomaterials. The conventional procedure for synthesizing titania nanotubes array by sonoelectrochemical synthesis was used in this study, and CdS doping was accomplished using a wet chemical process. Scanning electron microscope, X-ray diffraction and Fourier transform infrared were used to conduct morphological and compositional analyses. The optical studies were carried out at the same time using UV–visible, photoluminescence and UV–diffused reflectance spectroscopy characterization. CdS adhesion to titania is confirmed by bandgap shifting. To assist photocatalytic investigations, electrochemical impedance studies were conducted. Using a lab-prepared reactor, photocatalytic investigations werecarried out, and a plausible mechanism was presented. CdS on TiNTs has a unique flower-like morphology, which has been reported elsewhere, and it demonstrates excellent adhesion, forming the best photocatalytic pair.

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