Abstract
Titania (TiO2) is a well-known photocatalyst in material science. However, it only works in the UV(Ultra violet) range of the spectrum(Eg = 3.2eV). The doping approach allows TiO2 photocatalysis to function in the visible region.Cadmium sulphide(CdS) was utilized as a dopant to maximize the quantity of visible light passing through, as its bandgap was just 2.4eV. Material manipulation at the nanoscale can have many distinct outcomes. Titania nanotubesarray(TiNT)was created by anodization, and CdS quantum dots were made by microemulsion technique and integrated into TiNT. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were employed to study morphology. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used to determine the composition. UV-diffuse reflectance (UV-DRS) spectroscopy was used for photocatalytic studies. Photocatalytic methyl orange (MO) breakdown and photocatalytic hydrogen evolution were also proven under visible light. According to the study, the CdS/TiNT nanotubes array has more photocatalytic power than pure TiNT. Based on the findings, CdS quantum dots could get into the nanotubes, making them perfect heterostructures for all visible photocatalysis.
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