Carbon (C) doped TiO 2 /CdS core-shell nanocomposite (C/TiO 2 /CdS) was synthesized using microemulsion method. Synthesized powder was characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive Xray spectroscopy (EDX), transmission electron microscopy (TEM), and UV-visible spectrophotometery. TEM images reveal that C/TiO 2 /CdS core-shell heterostructure is successfully prepared with CdS as a core and C doped TiO 2 as a shell. UV-visible absorption spectra show that CdS nanoparticles act as a sensitizer and effectively enhance the photoabsorption capacity of C/TiO 2 /CdS nanocomposite in visible region. Visible light photocatalytic activity of synthesized nanocomposite was evaluated for the degradation of methylene blue. C/TiO 2 /CdS core-shell nanocomposite exhibits better photocatalytic activity as compared to bare TiO 2 , CdS, CdS/TiO 2 , and C doped TiO 2 .
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