TY - JOUR ID - TI - Preparation and Characterization of Anatase Titanium Dioxide Nanostructures as Smart and Self-Cleaned Surfaces تحضير ومعايرة تراكيب ثنائي أوكسيد التيتانيوم النانوية بطور أناتاس كسطوح ذكية وذاتية التنظيف AU - Ruqia A.H. Hassan, Fuad T. Ibrahim PY - 2020 VL - 16 IS - 4 SP - 13 EP - 18 JO - Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية SN - 18132065 23091673 AB - Highly-pure titanium dioxide (TiO2) thin films were prepared by dc reactive magnetron sputtering technique onto glass substrates after different deposition times. The XRD pattern of TiO2 powders extracted from the thin film samples showed intense and sharp reflections from the crystal planes belonging to the tetragonal anatase phase of TiO2. As well, scanning electron microscopy has confirmed the formation of smooth and well-dispersed nano-surfaces. The optical measurements in the wavelength range 300-800 nm have confirmed that the energy band gap of the prepared films was ranging in 3.2-3.4 eV. The contact angle measurements were carried out using the sessile drop method as the contact angle of water droplet on the surface was measured before and after irradiation of these surfaces with UV radiation. The results showed that the contact angle of water droplet on the TiO2 surface decreases after 30 minutes of UV irradiated for all samples, which confirms the high hydropholic characteristics of these samples.

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