Structural, Optical and Photocatalytic Properties of Co-Tio2 Prepared by Sol-Gel Technique

Abstract

In the present work, the Co/TiO 2 nanocomposite was prepared by sol-gel method. The structural and optical properties of nanocomposite were studied using, X-ray diffraction (XRD) and diffuse reflectance UV-VIS spectrometry. The XRD spectra revealed its tetrahedral anatase structure. The grain size and optical properties of composite are also reported. Syntesied Co/TiO 2 photocatalyst showed excellent activity for the photodegradation of Methyl orange whether under visible and ultraviolet light irradiation.

Relevance of Dispersion and the Electronic Spin in the DFT + U Approach for the Description of Pristine and Defective TiO2 Anatase

“…Transition-metal doped TiO 2 -based materials have been widely studied for the development of semiconductors with enhanced catalytic activity. − The incorporation of transition metals into the lattice of TiO 2 induces the formation of new energy levels near the conduction band. For instance, cobalt-modified TiO 2 anatase presented ferromagnetism with n-type semiconducting properties. , Cobalt might possibly occupy an interstitial position in the TiO 2 lattice because of its relatively larger size compared to that of titanium .…”