Synthesis and Self-Cleaning Property of TiO₂ Thin Film Doping with Fe³⁺, Al³⁺, Ce³⁺ Ions

Abstract

Enhancing the response to visible light and inhibiting recombination of photogenerated electrons and holes is a key point for strongly improved self-cleaning performances of TiO2 self-cleaning films. In this work, TiO2 thin film doping with three different ions (Fe3+, Al3+, Ce3+) on glass substrate respectively by sol–gel method to explore the effect of ions on self-cleaning performance of TiO2 thin films. All the prepared samples are characterized by XRD, SEM, UV-Vis and water contact angle tester. Moreover, the self-cleaning mechanism of doping TiO2 thin film is discussed. The water contact angle of TiO2 thin film doping with 9% Fe (molar ratio), 5% Ce and 5% Al are reach at 0°, respectively. In comparison with the water contact angle of pure TiO2 thin film (2.5°), TiO2 thin film doping with metal ions exhibit better self-cleaning property.

Effect of TiO 2 coating on the surface condition and corona characteristics of positive DC conductors with particle matters

“…TiO 2 has good photohydrophilicity, insulation, high dielectric constant and good photocatalytic performance [19]. TiO 2 has good anti-fouling and self-cleaning function under the action of photocatalysis, which has attracted much attention from many industries [20][21][22][23]. When an external electric field is applied to TiO 2 nanoparticles, the separation of electrons and holes is promoted, the recombination of electrons and holes is suppressed, and the photocatalytic process is improved [24,25].…”

Modified Nano-TiO2 Based Composites for Environmental Photocatalytic Applications

“…Fossil fuel is a non-renewable resource with limited reserves [1][2][3]. Over the past 140 years, we have consumed one trillion barrels of oil, and today, the world's demand for energy has exceeded 1000 barrels of oil, 100,000 cubic meters of natural gas, and 221 tons of coal per second [4]. It is clear that the consumption of fossil fuels is not sustainable in the long-term and has caused serious harm to the environment and human health [5].…”