Surface Modification of TiO2: Correlation between Structure, Charge Separation and Reduction Properties.

Silver metallisation of titania particles: effects on photoactivity for the oxidation of organics

“…Hence, salicylic acid and its intermediate oxidation products mediate the efficient separation of holes and electrons for redox reactions during the reaction. The ability of chelating organics to improve charge separation and the rates of electron transfer to electron acceptors such as metal ions in titania suspensions has been demonstrated in several studies [30,[59][60][61]. Under these conditions, holes are efficiently trapped by organic species and other oxidisable species such as adsorbed hydroxyl groups and water molecules while electrons are efficiently trapped by oxygen molecules.…”

Anatase and rutile surfaces with adsorbates representative of acidic and basic conditions

“…From experiment, it is known that the structure of surfaces are determined by acid-base equilibria involving TiOH surface hydroxyl groups [17,[25][26][27][28][29]. Under neutral pH conditions, the surfaces are found to be terminated with water adsorbates (either as molecular H 2 O or as dissociated OH À + H + ) capping the under-coordinated surface sites [17,25].…”

Designing of nanostructured hollow TiO2 spheres obtained by ultrasonic spray pyrolysis

“…The electronic [2], optical [3,4], structural [5,6], and photoredox [7][8][9] properties of NPs can be controlled by changing the particle size without changing the chemical composition. Advanced research in controlling particle size distribution and surface properties of NPs, made possible their application in microelectronics and photocatalysis [10].…”