Evolution of photo-catalytic properties of reactive plasma processed nano-crystalline titanium dioxide powder

Preparation of Ti3+ self-doped TiO2 nanoparticles and their visible light photocatalytic activity

“…The binding energy at 530.1 eV corresponds to the Ti-O band, while the peak at 531.3 eV corresponds to the characteristic peak of surface oxygen defects (Ov) [28]. The weak peak at 532.3 eV corresponds to the characteristic peak of the -OH band [29,30], indicating that -OH existed on the surface of the particles.…”

Fabrication of Ti3+ self-doped TiO2(A) nanoparticle/TiO2(R) nanorod heterojunctions with enhanced visible-light-driven photocatalytic properties

“…The content of hydroxyl groups on the surface inuenced the recombination rates of electron-hole pairs. The hydroxyl groups at the particle surface reacted with the holes in the valence band of TiO 2 (R) and converted to highly reactive cOH radicals, 44 which were responsible for the photocatalytic activity. Hydrothermal treatments incorporated the hydroxyl groups at the particle surface and promoted the photocatalytic activity.…”

Spectroscopic observations of nanosized TiO2 by the hydrothermal method

“…The electron in the conduction band is then expelled by responding with O2 in the external system. The hole in the valence band can respond with OH-or H2O variety, which are immersed on the surface of the TiO2 to give the hydroxyl profound 4 . This hydroxyl radical starts the photocatalytic decomposition, a contamination regulate innovation or diversification technology which obliterates the natural synthetic impurity in air, water, and soil.…”