Dileep Tube, S
Savitribai Phule Pune University, India
Title: Novel supported TiO2 nanocomposites: An efficient photocatalyst for water cleaning technology
Biography
Biography: Dileep Tube, S
Abstract
Supported TiO2 nanoparticles were synthesized by sol-gel method using blue-green phosphor and characterized using X-ray diffraction (XRD), diffused reflectance UV-Visible spectroscopy, fourier-transform infrared, and electron microscopy techniques. The XRD study reveals that the TiO2 crystal structure does not transform from anatase to rutile phase till 600 ºC. Covalent interaction between the phosphor and TiO2 is evident from the diffuse reflectance spectra showing red shift in wavelength. The band-gap has been tuned to absorb light in the visible range. TEM micrographs of the as-prepared materials revealed presence of well dispersed polycrystalline TiO2 nanoparticles on the surface of the phosphor substrate. The difference in size of TiO2 particles that are bonded to the phosphor is attributed to the magnitude of Lewis acid-base interactions between TiO2 and phosphor support. Photocatalytic activity of as prepared nanocomposite was investigated by photodegradation of model organic pollutant methylene blue under UV and visible light. The nanocomposite catalyst showed highest photocatalytic activity