TiO 2 photocatalytic process has been developed and used in various applications. One of the use of TiO 2 is related to the hydrophilic properties, which is shown with a small contact angle between the surface of object and liquid (<10°). In this study, TiO 2 was coated on a glass surface with the dip coating method. TiO 2 catalyst was prepared by titanium tetraisopropoxide (TTIP) as precursor and polyethylene glycol (PEG) as template calcined at a temperature of 450°C. The addition of PEG was varied to obtain optimal conditions. Measurement of Diffuse Reflectance Spectroscopy UV-Vis (DRS UV-Vis) showed a decrease in the value of the band gap for TiO 2 , TiO 2 -PEG 200, TiO 2 -PEG 400 and TiO 2 -PEG 1000 were 3.153 eV; 3.056 eV; 3.012 eV and 2.975 eV, respectively. Results of contact angle measurements have been achieved hydrophilic properties. While, the photocurrent response of the three TiO 2 working electrodes added the PEG 200, PEG 400, PEG 1000 were 2.3×10 -3 A, 2.2×10 -3 A and 4.2×10 -3 A, respectively. Therefore, PEG could improve the performance of TiO 2 catalysts.
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