Preparation of F-doped titania nanoparticles with a highly thermally stable anatase phase by alcoholysis of TiCl4

Preparation, characterization of P-doped TiO2 nanoparticles and their excellent photocatalystic properties under the solar light irradiation

“…Since the radii of P ion (0.38 Å) is smaller than that of Ti ion (0.67 Å) [29], along with the separation of P ion, the (1 0 1) plane of anatase was shifted to lower diffraction angle. If the radii of dopant atom are close to that of O atom or Ti atom, the diffraction peak of (1 0 1) plane of the F-doped anatase samples does not shift under the high-temperature anneal [31]. Fig.…”

Improved high temperature stability of anatase TiO2 photocatalysts by N, F, P co-doping

“…S.4) however only phosphorus is evident when temperatures are increased to 900 °C. The photoelectron peak for fluorine seen at approximately 685.1 eV (500 °C) is attributed to the F1s species which is typical for the linkage of fluorine onto the structure in the form of Ti-O-F [35,40,45]. The concentration for this is determined to be 6.71 at%.…”

“…Additional areas which have been identified as benefitting from a high temperature stable form of anatase are sanitary wares and self-cleaning glass. All these require the use of very high temperatures during their processing stages and therefore a stable anatase phase at the sintering temperature is a necessity [40]. The current investigation seeks to determine the influence of the doping (the term "doping" is used loosely for describing the addition of N, P and F into the lattice, surface or interstitial sites) on the production of high temperature stable titanium dioxide.…”

Preparation of thermally stable anatase TiO2 photocatalyst from TiOF2 precursor and its photocatalytic activity

“…Among various oxide semiconductor photocatalysts, titania has attracted increasing attention due to its biological and chemical inertness, strong photo oxidization power, cost effectiveness, and long-term stability against photo and chemical corrosion [1,[8][9][10][11][12][13][14]. Now many proposed innovative and commercial applications for photocatalytically active stable titania-coated materials such as bathroom tiles, sanitary wares, and self-cleaning glass for the control of organic contaminants require high processing temperatures and hence high-temperature stability [13,14]. However, pure anatase is metastable and inclines to transform into rutile when heating temperature is higher than 600 • C owing to its higher surface energy than rutile, thus limiting its suitability for high-temperature applications [13,14].…”