Influence of the heating temperature on the properties of nickel doped TiO2 films prepared by sol–gel method

Heat treatment and substrate dependant properties of titania thin films with high copper loading

“…Contrary to Ni‐ and Co‐doped titania , where nickel‐ and cobalt‐containing compounds segregated to the surface of the films during annealing, further annealing of copper‐doped titania films to 900 °C leads to disappearance of the dopant from the surface region (Fig. ).…”

“…The procedure was repeated until the last sample was removed from the furnace after a 1‐h annealing at 900 °C. A similar sol–gel method and annealing procedure has been utilized previously by us to prepare undoped and cobalt‐doped titania films on SiO 2 /Si(100) and nickel‐doped titania on HF‐etched Si(100) and SiO 2 /Si(100) substrate .…”

“…It is proposed that initial Cu 2+ is reduced by photogenerated electrons or OH radicals in the precursor . Another interesting question is whether copper segregates during annealing out of the titania matrix as observed previously in case of nickel and cobalt . Photocatalytic reactions occur on the surface and therefore the behaviour of copper atoms on the surface is especially important.…”

Photocatalytic antibacterial activity of nano-TiO2 (anatase)-based thin films: Effects on Escherichia coli cells and fatty acids

“…Antibacterial applications of TiO 2 often use thin film coatings that can be deposited by various methods including sputtering [17], chemical solution deposition [18], pulsed laser deposition [19] or sol-gel method [20][21][22][23].…”

Sol–gel derived nickel-doped TiO2films as wear protection coatings

“…Nickel-doped TiO 2 has shown several interesting properties like photo-catalytic activity and UV light-induced hydrophilicity [14][15][16][17][18]. However, information regarding the mechanical and tribological performance of Ni-doped TiO 2 is not available, though this is a crucial problem faced during the engineering application of films.…”