Preparation and Characterization of TiO2 Thin Film on Glass Substrate for Photocatalytic Hydrogen Production

Wednesday, October 19, 2011
Exhibit Hall B (Minneapolis Convention Center)
Njideka H. Okoye1, Pedro E. Arce1 and Dennis George2, (1)Chemical Engineering, Tennessee Technological University, Cookeville, TN, (2)Civil Engineering/Center for the Management, Utilization and Protection of Water Resources, Tennessee Tech University, Cookeville, TN

Transparent titanium dioxide (TiO2), anatase form, thin films were prepared and deposited on microscopic glass substrate via the sol-gel method and calcined at 500OC.  The number of coating cycles varied from 6, 8 and 10 to assess the effect on hydrogen gas production. TiO2 deposit layer produced was characterized with X-ray diffraction technique (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV-Visible optical fiber spectrophotometer. Hydrogen was produced using the 8th coating substrate that gave consistent low absorption at wavelengths of 320nm to 350nm.This absorption wavelength range is needed for effective TiO2 excitation. The effect of hydrogen production rate was analyzed using different ethanol ratio and surface area.

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See more of this Session: Mesd Poster Session
See more of this Group/Topical: Materials Engineering and Sciences Division