Synthesis and characterization of CdS doped TiO2 nanocrystalline powder: A spectroscopic study

• Published in: Materials research bulletin Vol. 47; no. 7; pp. 1719 - 1724
• Main Authors: Thakur, Priya, Chadha, Ridhima, Biswas, Nandita, Sarkar, Sisir K., Mukherjee, Tulsi, Joshi, Satyawati S., Kapoor, Sudhir
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-07-2012
• Subjects: C. Electron microscopy; C. Raman spectroscopy; C. X-ray diffraction; C. Electron microscopy; C. Raman spectroscopy; C. X-ray diffraction
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2012.03.032

Raman spectra of TiO2 sample doped with 50% CdS and annealed at 600°C. [Display omitted]
► Transformation from anatase to rutile is prohibited in doped TiO2. ► FTIR study indicates that TiO2 lattice has been modified in the presence of CdS. ► Raman spectroscopy is found to be more sensitive as compared to XRD.
This report aimed to study the effect of CdS doping in TiO2 on the phase transformation of TiO2 from anatase to rutile using X-ray diffraction (XRD) and Raman spectroscopy. CdS-doped TiO2 nanocomposites have been prepared and characterized using Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). We have observed that contrary to bare TiO2, phase transformation of TiO2 from anatase to rutile is hindered when doped with CdS at high temperature. Raman spectroscopy is found to be more sensitive for detection of the surface of TiO2 as compared to XRD.